entry_points_gles_3_0.cpp

Branch :
Show log
Commit
Author : Jamie Madill
Date : 2016-06-09 07:07:18
Hash : dfde6abf
Message : Context: Remove mutable gl::State getter. This will preserve layering - the API layer doesn't mutate the state directly, it passes the API call through to the Context. Is also removes the possiblity of any shenanigans of the Validation layer changing the GL state. Also, this CL refactors a few validation entry points to take ValidationContext instead of Context. ValidationContext will be the correct way to interact with the gl::Context in the Validation code. Finally, additional refactorings make ContextState a proper class with private data. This allows the ContextState itself to keep a mutable pointer to the gl::State, so ValidationContext can modify it if necessary (and it will be necessary for Framebuffer completeness caching). BUG=angleproject:1388 Change-Id: I86ab3561573caa9535c8d1b8aad4ab3d0e7cd470 Reviewed-on: https://chromium-review.googlesource.com/348954 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>
src/libGLESv2/entry_points_gles_3_0.cpp
//
// Copyright(c) 2014 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//

// entry_points_gles_3_0.cpp : Implements the GLES 3.0 entry points.

#include "libGLESv2/entry_points_gles_3_0.h"
#include "libGLESv2/entry_points_gles_2_0_ext.h"
#include "libGLESv2/global_state.h"

#include "libANGLE/formatutils.h"
#include "libANGLE/Buffer.h"
#include "libANGLE/Context.h"
#include "libANGLE/Error.h"
#include "libANGLE/Fence.h"
#include "libANGLE/Framebuffer.h"
#include "libANGLE/Query.h"
#include "libANGLE/VertexArray.h"

#include "libANGLE/validationES.h"
#include "libANGLE/validationES3.h"
#include "libANGLE/queryconversions.h"

#include "common/debug.h"

namespace gl
{

void GL_APIENTRY ReadBuffer(GLenum mode)
{
    EVENT("(GLenum mode = 0x%X)", mode);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateReadBuffer(context, mode))
        {
            return;
        }

        context->readBuffer(mode);
    }
}

void GL_APIENTRY DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid* indices)
{
    EVENT("(GLenum mode = 0x%X, GLuint start = %u, GLuint end = %u, GLsizei count = %d, GLenum type = 0x%X, "
          "const GLvoid* indices = 0x%0.8p)", mode, start, end, count, type, indices);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        IndexRange indexRange;
        if (!context->skipValidation() &&
            !ValidateDrawRangeElements(context, mode, start, end, count, type, indices,
                                       &indexRange))
        {
            return;
        }

        // As long as index validation is done, it doesn't matter whether the context receives a drawElements or
        // a drawRangeElements call - the GL back-end is free to choose to call drawRangeElements based on the
        // validated index range. If index validation is removed, adding drawRangeElements to the context interface
        // should be reconsidered.
        Error error =
            context->drawRangeElements(mode, start, end, count, type, indices, indexRange);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

void GL_APIENTRY TexImage3D(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid* pixels)
{
    EVENT("(GLenum target = 0x%X, GLint level = %d, GLint internalformat = %d, GLsizei width = %d, "
          "GLsizei height = %d, GLsizei depth = %d, GLint border = %d, GLenum format = 0x%X, "
          "GLenum type = 0x%X, const GLvoid* pixels = 0x%0.8p)",
          target, level, internalformat, width, height, depth, border, format, type, pixels);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateTexImage3D(context, target, level, internalformat, width, height, depth,
                                border, format, type, pixels))
        {
            return;
        }

        context->texImage3D(target, level, internalformat, width, height, depth, border, format,
                            type, pixels);
    }
}

void GL_APIENTRY TexSubImage3D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid* pixels)
{
    EVENT("(GLenum target = 0x%X, GLint level = %d, GLint xoffset = %d, GLint yoffset = %d, "
          "GLint zoffset = %d, GLsizei width = %d, GLsizei height = %d, GLsizei depth = %d, "
          "GLenum format = 0x%X, GLenum type = 0x%X, const GLvoid* pixels = 0x%0.8p)",
          target, level, xoffset, yoffset, zoffset, width, height, depth, format, type, pixels);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateTexSubImage3D(context, target, level, xoffset, yoffset, zoffset, width, height,
                                   depth, format, type, pixels))
        {
            return;
        }

        context->texSubImage3D(target, level, xoffset, yoffset, zoffset, width, height, depth,
                               format, type, pixels);
    }
}

void GL_APIENTRY CopyTexSubImage3D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height)
{
    EVENT("(GLenum target = 0x%X, GLint level = %d, GLint xoffset = %d, GLint yoffset = %d, "
          "GLint zoffset = %d, GLint x = %d, GLint y = %d, GLsizei width = %d, GLsizei height = %d)",
          target, level, xoffset, yoffset, zoffset, x, y, width, height);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateCopyTexSubImage3D(context, target, level, xoffset, yoffset, zoffset, x, y,
                                       width, height))
        {
            return;
        }

        context->copyTexSubImage3D(target, level, xoffset, yoffset, zoffset, x, y, width, height);
    }
}

void GL_APIENTRY CompressedTexImage3D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const GLvoid* data)
{
    EVENT("(GLenum target = 0x%X, GLint level = %d, GLenum internalformat = 0x%X, GLsizei width = %d, "
          "GLsizei height = %d, GLsizei depth = %d, GLint border = %d, GLsizei imageSize = %d, "
          "const GLvoid* data = 0x%0.8p)",
          target, level, internalformat, width, height, depth, border, imageSize, data);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateCompressedTexImage3D(context, target, level, internalformat, width, height,
                                          depth, border, imageSize, data))
        {
            return;
        }

        context->compressedTexImage3D(target, level, internalformat, width, height, depth, border,
                                      imageSize, data);
    }
}

void GL_APIENTRY CompressedTexSubImage3D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid* data)
{
    EVENT("(GLenum target = 0x%X, GLint level = %d, GLint xoffset = %d, GLint yoffset = %d, "
        "GLint zoffset = %d, GLsizei width = %d, GLsizei height = %d, GLsizei depth = %d, "
        "GLenum format = 0x%X, GLsizei imageSize = %d, const GLvoid* data = 0x%0.8p)",
        target, level, xoffset, yoffset, zoffset, width, height, depth, format, imageSize, data);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateCompressedTexSubImage3D(context, target, level, xoffset, yoffset, zoffset,
                                             width, height, depth, format, imageSize, data))
        {
            return;
        }

        context->compressedTexSubImage3D(target, level, xoffset, yoffset, zoffset, width, height,
                                         depth, format, imageSize, data);
    }
}

void GL_APIENTRY GenQueries(GLsizei n, GLuint* ids)
{
    EVENT("(GLsizei n = %d, GLuint* ids = 0x%0.8p)", n, ids);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateGenQueries(context, n, ids))
        {
            return;
        }

        for (GLsizei i = 0; i < n; i++)
        {
            ids[i] = context->createQuery();
        }
    }
}

void GL_APIENTRY DeleteQueries(GLsizei n, const GLuint* ids)
{
    EVENT("(GLsizei n = %d, GLuint* ids = 0x%0.8p)", n, ids);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateDeleteQueries(context, n, ids))
        {
            return;
        }

        for (int i = 0; i < n; i++)
        {
            context->deleteQuery(ids[i]);
        }
    }
}

GLboolean GL_APIENTRY IsQuery(GLuint id)
{
    EVENT("(GLuint id = %u)", id);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return GL_FALSE;
        }

        return (context->getQuery(id, false, GL_NONE) != NULL) ? GL_TRUE : GL_FALSE;
    }

    return GL_FALSE;
}

void GL_APIENTRY BeginQuery(GLenum target, GLuint id)
{
    EVENT("(GLenum target = 0x%X, GLuint id = %u)", target, id);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateBeginQuery(context, target, id))
        {
            return;
        }

        Error error = context->beginQuery(target, id);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

void GL_APIENTRY EndQuery(GLenum target)
{
    EVENT("(GLenum target = 0x%X)", target);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateEndQuery(context, target))
        {
            return;
        }

        Error error = context->endQuery(target);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

void GL_APIENTRY GetQueryiv(GLenum target, GLenum pname, GLint* params)
{
    EVENT("(GLenum target = 0x%X, GLenum pname = 0x%X, GLint* params = 0x%0.8p)", target, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateGetQueryiv(context, target, pname, params))
        {
            return;
        }

        context->getQueryiv(target, pname, params);
    }
}

void GL_APIENTRY GetQueryObjectuiv(GLuint id, GLenum pname, GLuint* params)
{
    EVENT("(GLuint id = %u, GLenum pname = 0x%X, GLint* params = 0x%0.8p)", id, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateGetQueryObjectuiv(context, id, pname, params))
        {
            return;
        }

        Error error = context->getQueryObjectuiv(id, pname, params);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

GLboolean GL_APIENTRY UnmapBuffer(GLenum target)
{
    EVENT("(GLenum target = 0x%X)", target);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateUnmapBuffer(context, target))
        {
            return GL_FALSE;
        }

        return context->unmapBuffer(target);
    }

    return GL_FALSE;
}

void GL_APIENTRY GetBufferPointerv(GLenum target, GLenum pname, GLvoid** params)
{
    EVENT("(GLenum target = 0x%X, GLenum pname = 0x%X, GLvoid** params = 0x%0.8p)", target, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateGetBufferPointerv(context, target, pname, params))
        {
            return;
        }

        context->getBufferPointerv(target, pname, params);
    }
}

void GL_APIENTRY DrawBuffers(GLsizei n, const GLenum* bufs)
{
    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateDrawBuffers(context, n, bufs))
        {
            return;
        }

        context->drawBuffers(n, bufs);
    }
}

void GL_APIENTRY UniformMatrix2x3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, GLboolean transpose = %u, const GLfloat* value = 0x%0.8p)",
          location, count, transpose, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniformMatrix(context, GL_FLOAT_MAT2x3, location, count, transpose))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniformMatrix2x3fv(location, count, transpose, value);
    }
}

void GL_APIENTRY UniformMatrix3x2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, GLboolean transpose = %u, const GLfloat* value = 0x%0.8p)",
          location, count, transpose, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniformMatrix(context, GL_FLOAT_MAT3x2, location, count, transpose))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniformMatrix3x2fv(location, count, transpose, value);
    }
}

void GL_APIENTRY UniformMatrix2x4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, GLboolean transpose = %u, const GLfloat* value = 0x%0.8p)",
          location, count, transpose, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniformMatrix(context, GL_FLOAT_MAT2x4, location, count, transpose))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniformMatrix2x4fv(location, count, transpose, value);
    }
}

void GL_APIENTRY UniformMatrix4x2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, GLboolean transpose = %u, const GLfloat* value = 0x%0.8p)",
          location, count, transpose, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniformMatrix(context, GL_FLOAT_MAT4x2, location, count, transpose))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniformMatrix4x2fv(location, count, transpose, value);
    }
}

void GL_APIENTRY UniformMatrix3x4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, GLboolean transpose = %u, const GLfloat* value = 0x%0.8p)",
          location, count, transpose, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniformMatrix(context, GL_FLOAT_MAT3x4, location, count, transpose))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniformMatrix3x4fv(location, count, transpose, value);
    }
}

void GL_APIENTRY UniformMatrix4x3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, GLboolean transpose = %u, const GLfloat* value = 0x%0.8p)",
          location, count, transpose, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniformMatrix(context, GL_FLOAT_MAT4x3, location, count, transpose))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniformMatrix4x3fv(location, count, transpose, value);
    }
}

void GL_APIENTRY BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter)
{
    EVENT("(GLint srcX0 = %d, GLint srcY0 = %d, GLint srcX1 = %d, GLint srcY1 = %d, GLint dstX0 = %d, "
          "GLint dstY0 = %d, GLint dstX1 = %d, GLint dstY1 = %d, GLbitfield mask = 0x%X, GLenum filter = 0x%X)",
          srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateBlitFramebuffer(context, srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1,
                                     dstY1, mask, filter))
        {
            return;
        }

        context->blitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask,
                                 filter);
    }
}

void GL_APIENTRY RenderbufferStorageMultisample(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height)
{
    EVENT("(GLenum target = 0x%X, GLsizei samples = %d, GLenum internalformat = 0x%X, GLsizei width = %d, GLsizei height = %d)",
        target, samples, internalformat, width, height);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (!ValidateES3RenderbufferStorageParameters(context, target, samples, internalformat, width, height))
        {
            return;
        }

        Renderbuffer *renderbuffer = context->getGLState().getCurrentRenderbuffer();
        renderbuffer->setStorageMultisample(samples, internalformat, width, height);
    }
}

void GL_APIENTRY FramebufferTextureLayer(GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer)
{
    EVENT("(GLenum target = 0x%X, GLenum attachment = 0x%X, GLuint texture = %u, GLint level = %d, GLint layer = %d)",
        target, attachment, texture, level, layer);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateFramebufferTextureLayer(context, target, attachment, texture, level, layer))
        {
            return;
        }

        context->framebufferTextureLayer(target, attachment, texture, level, layer);
    }
}

GLvoid *GL_APIENTRY MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access)
{
    EVENT("(GLenum target = 0x%X, GLintptr offset = %d, GLsizeiptr length = %d, GLbitfield access = 0x%X)",
          target, offset, length, access);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateMapBufferRange(context, target, offset, length, access))
        {
            return nullptr;
        }

        return context->mapBufferRange(target, offset, length, access);
    }

    return nullptr;
}

void GL_APIENTRY FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length)
{
    EVENT("(GLenum target = 0x%X, GLintptr offset = %d, GLsizeiptr length = %d)", target, offset, length);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateFlushMappedBufferRange(context, target, offset, length))
        {
            return;
        }

        context->flushMappedBufferRange(target, offset, length);
    }
}

void GL_APIENTRY BindVertexArray(GLuint array)
{
    EVENT("(GLuint array = %u)", array);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateBindVertexArray(context, array))
        {
            return;
        }

        context->bindVertexArray(array);
    }
}

void GL_APIENTRY DeleteVertexArrays(GLsizei n, const GLuint* arrays)
{
    EVENT("(GLsizei n = %d, const GLuint* arrays = 0x%0.8p)", n, arrays);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateDeleteVertexArrays(context, n, arrays))
        {
            return;
        }

        for (int arrayIndex = 0; arrayIndex < n; arrayIndex++)
        {
            if (arrays[arrayIndex] != 0)
            {
                context->deleteVertexArray(arrays[arrayIndex]);
            }
        }
    }
}

void GL_APIENTRY GenVertexArrays(GLsizei n, GLuint* arrays)
{
    EVENT("(GLsizei n = %d, GLuint* arrays = 0x%0.8p)", n, arrays);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateGenVertexArrays(context, n, arrays))
        {
            return;
        }

        for (int arrayIndex = 0; arrayIndex < n; arrayIndex++)
        {
            arrays[arrayIndex] = context->createVertexArray();
        }
    }
}

GLboolean GL_APIENTRY IsVertexArray(GLuint array)
{
    EVENT("(GLuint array = %u)", array);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateIsVertexArray(context))
        {
            return GL_FALSE;
        }

        if (array == 0)
        {
            return GL_FALSE;
        }

        VertexArray *vao = context->getVertexArray(array);

        return (vao != NULL ? GL_TRUE : GL_FALSE);
    }

    return GL_FALSE;
}

void GL_APIENTRY GetIntegeri_v(GLenum target, GLuint index, GLint* data)
{
    EVENT("(GLenum target = 0x%X, GLuint index = %u, GLint* data = 0x%0.8p)",
          target, index, data);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        const Caps &caps = context->getCaps();
        switch (target)
        {
          case GL_TRANSFORM_FEEDBACK_BUFFER_START:
          case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
          case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
            if (index >= caps.maxTransformFeedbackSeparateAttributes)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
            break;

          case GL_UNIFORM_BUFFER_START:
          case GL_UNIFORM_BUFFER_SIZE:
          case GL_UNIFORM_BUFFER_BINDING:
            if (index >= caps.maxCombinedUniformBlocks)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
            break;

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        if (!(context->getIndexedIntegerv(target, index, data)))
        {
            GLenum nativeType;
            unsigned int numParams = 0;
            if (!context->getIndexedQueryParameterInfo(target, &nativeType, &numParams))
            {
                context->handleError(Error(GL_INVALID_ENUM));
                return;
            }

            if (numParams == 0)
            {
                return; // it is known that pname is valid, but there are no parameters to return
            }

            if (nativeType == GL_INT_64_ANGLEX)
            {
                GLint64 minIntValue = static_cast<GLint64>(std::numeric_limits<int>::min());
                GLint64 maxIntValue = static_cast<GLint64>(std::numeric_limits<int>::max());
                GLint64 *int64Params = new GLint64[numParams];

                context->getIndexedInteger64v(target, index, int64Params);

                for (unsigned int i = 0; i < numParams; ++i)
                {
                    GLint64 clampedValue = std::max(std::min(int64Params[i], maxIntValue), minIntValue);
                    data[i] = static_cast<GLint>(clampedValue);
                }

                delete [] int64Params;
            }
            else
            {
                UNREACHABLE();
            }
        }
    }
}

void GL_APIENTRY BeginTransformFeedback(GLenum primitiveMode)
{
    EVENT("(GLenum primitiveMode = 0x%X)", primitiveMode);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateBeginTransformFeedback(context, primitiveMode))
        {
            return;
        }

        context->beginTransformFeedback(primitiveMode);
    }
}

void GL_APIENTRY EndTransformFeedback(void)
{
    EVENT("(void)");

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        TransformFeedback *transformFeedback = context->getGLState().getCurrentTransformFeedback();
        ASSERT(transformFeedback != NULL);

        if (!transformFeedback->isActive())
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        transformFeedback->end();
    }
}

void GL_APIENTRY BindBufferRange(GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size)
{
    EVENT("(GLenum target = 0x%X, GLuint index = %u, GLuint buffer = %u, GLintptr offset = %d, GLsizeiptr size = %d)",
          target, index, buffer, offset, size);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        const Caps &caps = context->getCaps();
        switch (target)
        {
          case GL_TRANSFORM_FEEDBACK_BUFFER:
            if (index >= caps.maxTransformFeedbackSeparateAttributes)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
            break;

          case GL_UNIFORM_BUFFER:
            if (index >= caps.maxUniformBufferBindings)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
            break;

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        if (buffer != 0 && size <= 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        switch (target)
        {
          case GL_TRANSFORM_FEEDBACK_BUFFER:
            {
                // size and offset must be a multiple of 4
                if (buffer != 0 && ((offset % 4) != 0 || (size % 4) != 0))
                {
                    context->handleError(Error(GL_INVALID_VALUE));
                    return;
                }

                // Cannot bind a transform feedback buffer if the current transform feedback is active (3.0.4 pg 91 section 2.15.2)
                TransformFeedback *curTransformFeedback =
                    context->getGLState().getCurrentTransformFeedback();
                if (curTransformFeedback && curTransformFeedback->isActive())
                {
                    context->handleError(Error(GL_INVALID_OPERATION));
                    return;
                }

                context->bindIndexedTransformFeedbackBuffer(buffer, index, offset, size);
                context->bindGenericTransformFeedbackBuffer(buffer);
                break;
            }

          case GL_UNIFORM_BUFFER:

            // it is an error to bind an offset not a multiple of the alignment
            if (buffer != 0 && (offset % caps.uniformBufferOffsetAlignment) != 0)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }

            context->bindIndexedUniformBuffer(buffer, index, offset, size);
            context->bindGenericUniformBuffer(buffer);
            break;

          default:
            UNREACHABLE();
        }
    }
}

void GL_APIENTRY BindBufferBase(GLenum target, GLuint index, GLuint buffer)
{
    EVENT("(GLenum target = 0x%X, GLuint index = %u, GLuint buffer = %u)",
          target, index, buffer);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        const Caps &caps = context->getCaps();
        switch (target)
        {
          case GL_TRANSFORM_FEEDBACK_BUFFER:
            if (index >= caps.maxTransformFeedbackSeparateAttributes)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
            break;

          case GL_UNIFORM_BUFFER:
            if (index >= caps.maxUniformBufferBindings)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
            break;

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        switch (target)
        {
          case GL_TRANSFORM_FEEDBACK_BUFFER:
            {
                // Cannot bind a transform feedback buffer if the current transform feedback is active (3.0.4 pg 91 section 2.15.2)
                TransformFeedback *curTransformFeedback =
                    context->getGLState().getCurrentTransformFeedback();
                if (curTransformFeedback && curTransformFeedback->isActive())
                {
                    context->handleError(Error(GL_INVALID_OPERATION));
                    return;
                }

                context->bindIndexedTransformFeedbackBuffer(buffer, index, 0, 0);
                context->bindGenericTransformFeedbackBuffer(buffer);
                break;
            }
          case GL_UNIFORM_BUFFER:
            context->bindIndexedUniformBuffer(buffer, index, 0, 0);
            context->bindGenericUniformBuffer(buffer);
            break;

          default:
            UNREACHABLE();
        }
    }
}

void GL_APIENTRY TransformFeedbackVaryings(GLuint program, GLsizei count, const GLchar* const* varyings, GLenum bufferMode)
{
    EVENT("(GLuint program = %u, GLsizei count = %d, const GLchar* const* varyings = 0x%0.8p, GLenum bufferMode = 0x%X)",
          program, count, varyings, bufferMode);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (count < 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        const Caps &caps = context->getCaps();
        switch (bufferMode)
        {
          case GL_INTERLEAVED_ATTRIBS:
            break;
          case GL_SEPARATE_ATTRIBS:
            if (static_cast<GLuint>(count) > caps.maxTransformFeedbackSeparateAttributes)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
            break;
          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        Program *programObject = GetValidProgram(context, program);
        if (!programObject)
        {
            return;
        }

        programObject->setTransformFeedbackVaryings(count, varyings, bufferMode);
    }
}

void GL_APIENTRY GetTransformFeedbackVarying(GLuint program, GLuint index, GLsizei bufSize, GLsizei* length, GLsizei* size, GLenum* type, GLchar* name)
{
    EVENT("(GLuint program = %u, GLuint index = %u, GLsizei bufSize = %d, GLsizei* length = 0x%0.8p, "
          "GLsizei* size = 0x%0.8p, GLenum* type = 0x%0.8p, GLchar* name = 0x%0.8p)",
          program, index, bufSize, length, size, type, name);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (bufSize < 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        Program *programObject = GetValidProgram(context, program);
        if (!programObject)
        {
            return;
        }

        if (index >= static_cast<GLuint>(programObject->getTransformFeedbackVaryingCount()))
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        programObject->getTransformFeedbackVarying(index, bufSize, length, size, type, name);
    }
}

void GL_APIENTRY VertexAttribIPointer(GLuint index, GLint size, GLenum type, GLsizei stride, const GLvoid* pointer)
{
    EVENT("(GLuint index = %u, GLint size = %d, GLenum type = 0x%X, GLsizei stride = %d, const GLvoid* pointer = 0x%0.8p)",
          index, size, type, stride, pointer);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (index >= MAX_VERTEX_ATTRIBS)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        if (size < 1 || size > 4)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        switch (type)
        {
          case GL_BYTE:
          case GL_UNSIGNED_BYTE:
          case GL_SHORT:
          case GL_UNSIGNED_SHORT:
          case GL_INT:
          case GL_UNSIGNED_INT:
          case GL_INT_2_10_10_10_REV:
          case GL_UNSIGNED_INT_2_10_10_10_REV:
            break;

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        if (stride < 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        if ((type == GL_INT_2_10_10_10_REV || type == GL_UNSIGNED_INT_2_10_10_10_REV) && size != 4)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        // [OpenGL ES 3.0.2] Section 2.8 page 24:
        // An INVALID_OPERATION error is generated when a non-zero vertex array object
        // is bound, zero is bound to the ARRAY_BUFFER buffer object binding point,
        // and the pointer argument is not NULL.
        if (context->getGLState().getVertexArray()->id() != 0 &&
            context->getGLState().getArrayBufferId() == 0 && pointer != NULL)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        context->vertexAttribIPointer(index, size, type, stride, pointer);
    }
}

void GL_APIENTRY GetVertexAttribIiv(GLuint index, GLenum pname, GLint* params)
{
    EVENT("(GLuint index = %u, GLenum pname = 0x%X, GLint* params = 0x%0.8p)",
          index, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (index >= MAX_VERTEX_ATTRIBS)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        if (!ValidateGetVertexAttribParameters(context, pname))
        {
            return;
        }

        if (pname == GL_CURRENT_VERTEX_ATTRIB)
        {
            const VertexAttribCurrentValueData &currentValueData =
                context->getGLState().getVertexAttribCurrentValue(index);
            for (int i = 0; i < 4; ++i)
            {
                params[i] = currentValueData.IntValues[i];
            }
        }
        else
        {
            const VertexAttribute &attribState =
                context->getGLState().getVertexArray()->getVertexAttribute(index);
            *params = QuerySingleVertexAttributeParameter<GLint>(attribState, pname);
        }
    }
}

void GL_APIENTRY GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint* params)
{
    EVENT("(GLuint index = %u, GLenum pname = 0x%X, GLuint* params = 0x%0.8p)",
          index, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (index >= MAX_VERTEX_ATTRIBS)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        if (!ValidateGetVertexAttribParameters(context, pname))
        {
            return;
        }

        if (pname == GL_CURRENT_VERTEX_ATTRIB)
        {
            const VertexAttribCurrentValueData &currentValueData =
                context->getGLState().getVertexAttribCurrentValue(index);
            for (int i = 0; i < 4; ++i)
            {
                params[i] = currentValueData.UnsignedIntValues[i];
            }
        }
        else
        {
            const VertexAttribute &attribState =
                context->getGLState().getVertexArray()->getVertexAttribute(index);
            *params = QuerySingleVertexAttributeParameter<GLuint>(attribState, pname);
        }
    }
}

void GL_APIENTRY VertexAttribI4i(GLuint index, GLint x, GLint y, GLint z, GLint w)
{
    EVENT("(GLuint index = %u, GLint x = %d, GLint y = %d, GLint z = %d, GLint w = %d)",
          index, x, y, z, w);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (index >= MAX_VERTEX_ATTRIBS)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        context->vertexAttribI4i(index, x, y, z, w);
    }
}

void GL_APIENTRY VertexAttribI4ui(GLuint index, GLuint x, GLuint y, GLuint z, GLuint w)
{
    EVENT("(GLuint index = %u, GLuint x = %u, GLuint y = %u, GLuint z = %u, GLuint w = %u)",
          index, x, y, z, w);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (index >= MAX_VERTEX_ATTRIBS)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        context->vertexAttribI4ui(index, x, y, z, w);
    }
}

void GL_APIENTRY VertexAttribI4iv(GLuint index, const GLint* v)
{
    EVENT("(GLuint index = %u, const GLint* v = 0x%0.8p)", index, v);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (index >= MAX_VERTEX_ATTRIBS)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        context->vertexAttribI4iv(index, v);
    }
}

void GL_APIENTRY VertexAttribI4uiv(GLuint index, const GLuint* v)
{
    EVENT("(GLuint index = %u, const GLuint* v = 0x%0.8p)", index, v);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (index >= MAX_VERTEX_ATTRIBS)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        context->vertexAttribI4uiv(index, v);
    }
}

void GL_APIENTRY GetUniformuiv(GLuint program, GLint location, GLuint* params)
{
    EVENT("(GLuint program = %u, GLint location = %d, GLuint* params = 0x%0.8p)",
          program, location, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateGetUniformuiv(context, program, location, params))
        {
            return;
        }

        Program *programObject = context->getProgram(program);
        ASSERT(programObject);

        programObject->getUniformuiv(location, params);
    }
}

GLint GL_APIENTRY GetFragDataLocation(GLuint program, const GLchar *name)
{
    EVENT("(GLuint program = %u, const GLchar *name = 0x%0.8p)",
          program, name);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return -1;
        }

        if (program == 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return -1;
        }

        Program *programObject = context->getProgram(program);

        if (!programObject || !programObject->isLinked())
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return -1;
        }

        return programObject->getFragDataLocation(name);
    }

    return 0;
}

void GL_APIENTRY Uniform1ui(GLint location, GLuint v0)
{
    Uniform1uiv(location, 1, &v0);
}

void GL_APIENTRY Uniform2ui(GLint location, GLuint v0, GLuint v1)
{
    const GLuint xy[] = { v0, v1 };
    Uniform2uiv(location, 1, xy);
}

void GL_APIENTRY Uniform3ui(GLint location, GLuint v0, GLuint v1, GLuint v2)
{
    const GLuint xyz[] = { v0, v1, v2 };
    Uniform3uiv(location, 1, xyz);
}

void GL_APIENTRY Uniform4ui(GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3)
{
    const GLuint xyzw[] = { v0, v1, v2, v3 };
    Uniform4uiv(location, 1, xyzw);
}

void GL_APIENTRY Uniform1uiv(GLint location, GLsizei count, const GLuint* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, const GLuint* value = 0x%0.8p)",
          location, count, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniform(context, GL_UNSIGNED_INT, location, count))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniform1uiv(location, count, value);
    }
}

void GL_APIENTRY Uniform2uiv(GLint location, GLsizei count, const GLuint* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, const GLuint* value = 0x%0.8p)",
          location, count, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniform(context, GL_UNSIGNED_INT_VEC2, location, count))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniform2uiv(location, count, value);
    }
}

void GL_APIENTRY Uniform3uiv(GLint location, GLsizei count, const GLuint* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, const GLuint* value)",
          location, count, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniform(context, GL_UNSIGNED_INT_VEC3, location, count))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniform3uiv(location, count, value);
    }
}

void GL_APIENTRY Uniform4uiv(GLint location, GLsizei count, const GLuint* value)
{
    EVENT("(GLint location = %d, GLsizei count = %d, const GLuint* value = 0x%0.8p)",
          location, count, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateUniform(context, GL_UNSIGNED_INT_VEC4, location, count))
        {
            return;
        }

        Program *program = context->getGLState().getProgram();
        program->setUniform4uiv(location, count, value);
    }
}

void GL_APIENTRY ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint* value)
{
    EVENT("(GLenum buffer = 0x%X, GLint drawbuffer = %d, const GLint* value = 0x%0.8p)",
          buffer, drawbuffer, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateClearBufferiv(context, buffer, drawbuffer, value))
        {
            return;
        }

        context->clearBufferiv(buffer, drawbuffer, value);
    }
}

void GL_APIENTRY ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint* value)
{
    EVENT("(GLenum buffer = 0x%X, GLint drawbuffer = %d, const GLuint* value = 0x%0.8p)",
          buffer, drawbuffer, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateClearBufferuiv(context, buffer, drawbuffer, value))
        {
            return;
        }

        context->clearBufferuiv(buffer, drawbuffer, value);
    }
}

void GL_APIENTRY ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat* value)
{
    EVENT("(GLenum buffer = 0x%X, GLint drawbuffer = %d, const GLfloat* value = 0x%0.8p)",
          buffer, drawbuffer, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateClearBufferfv(context, buffer, drawbuffer, value))
        {
            return;
        }

        context->clearBufferfv(buffer, drawbuffer, value);
    }
}

void GL_APIENTRY ClearBufferfi(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil)
{
    EVENT("(GLenum buffer = 0x%X, GLint drawbuffer = %d, GLfloat depth, GLint stencil = %d)",
          buffer, drawbuffer, depth, stencil);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateClearBufferfi(context, buffer, drawbuffer, depth, stencil))
        {
            return;
        }

        context->clearBufferfi(buffer, drawbuffer, depth, stencil);
    }
}

const GLubyte *GL_APIENTRY GetStringi(GLenum name, GLuint index)
{
    EVENT("(GLenum name = 0x%X, GLuint index = %u)", name, index);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return NULL;
        }

        if (name != GL_EXTENSIONS)
        {
            context->handleError(Error(GL_INVALID_ENUM));
            return NULL;
        }

        if (index >= context->getExtensionStringCount())
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return NULL;
        }

        return reinterpret_cast<const GLubyte*>(context->getExtensionString(index).c_str());
    }

    return NULL;
}

void GL_APIENTRY CopyBufferSubData(GLenum readTarget, GLenum writeTarget, GLintptr readOffset, GLintptr writeOffset, GLsizeiptr size)
{
    EVENT("(GLenum readTarget = 0x%X, GLenum writeTarget = 0x%X, GLintptr readOffset = %d, GLintptr writeOffset = %d, GLsizeiptr size = %d)",
          readTarget, writeTarget, readOffset, writeOffset, size);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (!ValidBufferTarget(context, readTarget) || !ValidBufferTarget(context, writeTarget))
        {
            context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        Buffer *readBuffer  = context->getGLState().getTargetBuffer(readTarget);
        Buffer *writeBuffer = context->getGLState().getTargetBuffer(writeTarget);

        if (!readBuffer || !writeBuffer)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        // Verify that readBuffer and writeBuffer are not currently mapped
        if (readBuffer->isMapped() || writeBuffer->isMapped())
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (readOffset < 0 || writeOffset < 0 || size < 0 ||
            static_cast<unsigned int>(readOffset + size) > readBuffer->getSize() ||
            static_cast<unsigned int>(writeOffset + size) > writeBuffer->getSize())
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        if (readBuffer == writeBuffer && std::abs(readOffset - writeOffset) < size)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        // if size is zero, the copy is a successful no-op
        if (size > 0)
        {
            Error error = writeBuffer->copyBufferSubData(readBuffer, readOffset, writeOffset, size);
            if (error.isError())
            {
                context->handleError(error);
                return;
            }
        }
    }
}

void GL_APIENTRY GetUniformIndices(GLuint program, GLsizei uniformCount, const GLchar* const* uniformNames, GLuint* uniformIndices)
{
    EVENT("(GLuint program = %u, GLsizei uniformCount = %d, const GLchar* const* uniformNames = 0x%0.8p, GLuint* uniformIndices = 0x%0.8p)",
          program, uniformCount, uniformNames, uniformIndices);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (uniformCount < 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        Program *programObject = GetValidProgram(context, program);

        if (!programObject)
        {
            return;
        }

        if (!programObject->isLinked())
        {
            for (int uniformId = 0; uniformId < uniformCount; uniformId++)
            {
                uniformIndices[uniformId] = GL_INVALID_INDEX;
            }
        }
        else
        {
            for (int uniformId = 0; uniformId < uniformCount; uniformId++)
            {
                uniformIndices[uniformId] = programObject->getUniformIndex(uniformNames[uniformId]);
            }
        }
    }
}

void GL_APIENTRY GetActiveUniformsiv(GLuint program, GLsizei uniformCount, const GLuint* uniformIndices, GLenum pname, GLint* params)
{
    EVENT("(GLuint program = %u, GLsizei uniformCount = %d, const GLuint* uniformIndices = 0x%0.8p, GLenum pname = 0x%X, GLint* params = 0x%0.8p)",
          program, uniformCount, uniformIndices, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (uniformCount < 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        Program *programObject = GetValidProgram(context, program);

        if (!programObject)
        {
            return;
        }

        switch (pname)
        {
          case GL_UNIFORM_TYPE:
          case GL_UNIFORM_SIZE:
          case GL_UNIFORM_NAME_LENGTH:
          case GL_UNIFORM_BLOCK_INDEX:
          case GL_UNIFORM_OFFSET:
          case GL_UNIFORM_ARRAY_STRIDE:
          case GL_UNIFORM_MATRIX_STRIDE:
          case GL_UNIFORM_IS_ROW_MAJOR:
            break;

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        if (uniformCount > programObject->getActiveUniformCount())
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        for (int uniformId = 0; uniformId < uniformCount; uniformId++)
        {
            const GLuint index = uniformIndices[uniformId];

            if (index >= static_cast<GLuint>(programObject->getActiveUniformCount()))
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
        }

        for (int uniformId = 0; uniformId < uniformCount; uniformId++)
        {
            const GLuint index = uniformIndices[uniformId];
            params[uniformId] = programObject->getActiveUniformi(index, pname);
        }
    }
}

GLuint GL_APIENTRY GetUniformBlockIndex(GLuint program, const GLchar* uniformBlockName)
{
    EVENT("(GLuint program = %u, const GLchar* uniformBlockName = 0x%0.8p)", program, uniformBlockName);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return GL_INVALID_INDEX;
        }

        Program *programObject = GetValidProgram(context, program);
        if (!programObject)
        {
            return GL_INVALID_INDEX;
        }

        return programObject->getUniformBlockIndex(uniformBlockName);
    }

    return 0;
}

void GL_APIENTRY GetActiveUniformBlockiv(GLuint program, GLuint uniformBlockIndex, GLenum pname, GLint* params)
{
    EVENT("(GLuint program = %u, GLuint uniformBlockIndex = %u, GLenum pname = 0x%X, GLint* params = 0x%0.8p)",
          program, uniformBlockIndex, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }
        Program *programObject = GetValidProgram(context, program);

        if (!programObject)
        {
            return;
        }

        if (uniformBlockIndex >= programObject->getActiveUniformBlockCount())
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        switch (pname)
        {
          case GL_UNIFORM_BLOCK_BINDING:
            *params = static_cast<GLint>(programObject->getUniformBlockBinding(uniformBlockIndex));
            break;

          case GL_UNIFORM_BLOCK_DATA_SIZE:
          case GL_UNIFORM_BLOCK_NAME_LENGTH:
          case GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS:
          case GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES:
          case GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER:
          case GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER:
            programObject->getActiveUniformBlockiv(uniformBlockIndex, pname, params);
            break;

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }
    }
}

void GL_APIENTRY GetActiveUniformBlockName(GLuint program, GLuint uniformBlockIndex, GLsizei bufSize, GLsizei* length, GLchar* uniformBlockName)
{
    EVENT("(GLuint program = %u, GLuint uniformBlockIndex = %u, GLsizei bufSize = %d, GLsizei* length = 0x%0.8p, GLchar* uniformBlockName = 0x%0.8p)",
          program, uniformBlockIndex, bufSize, length, uniformBlockName);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        Program *programObject = GetValidProgram(context, program);

        if (!programObject)
        {
            return;
        }

        if (uniformBlockIndex >= programObject->getActiveUniformBlockCount())
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        programObject->getActiveUniformBlockName(uniformBlockIndex, bufSize, length, uniformBlockName);
    }
}

void GL_APIENTRY UniformBlockBinding(GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding)
{
    EVENT("(GLuint program = %u, GLuint uniformBlockIndex = %u, GLuint uniformBlockBinding = %u)",
          program, uniformBlockIndex, uniformBlockBinding);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (uniformBlockBinding >= context->getCaps().maxUniformBufferBindings)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        Program *programObject = GetValidProgram(context, program);

        if (!programObject)
        {
            return;
        }

        // if never linked, there won't be any uniform blocks
        if (uniformBlockIndex >= programObject->getActiveUniformBlockCount())
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        programObject->bindUniformBlock(uniformBlockIndex, uniformBlockBinding);
    }
}

void GL_APIENTRY DrawArraysInstanced(GLenum mode, GLint first, GLsizei count, GLsizei instanceCount)
{
    EVENT("(GLenum mode = 0x%X, GLint first = %d, GLsizei count = %d, GLsizei instanceCount = %d)",
          mode, first, count, instanceCount);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (!ValidateDrawArraysInstanced(context, mode, first, count, instanceCount))
        {
            return;
        }

        Error error = context->drawArraysInstanced(mode, first, count, instanceCount);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

void GL_APIENTRY DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type, const GLvoid* indices, GLsizei instanceCount)
{
    EVENT("(GLenum mode = 0x%X, GLsizei count = %d, GLenum type = 0x%X, const GLvoid* indices = 0x%0.8p, GLsizei instanceCount = %d)",
          mode, count, type, indices, instanceCount);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        IndexRange indexRange;
        if (!ValidateDrawElementsInstanced(context, mode, count, type, indices, instanceCount, &indexRange))
        {
            return;
        }

        Error error =
            context->drawElementsInstanced(mode, count, type, indices, instanceCount, indexRange);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

GLsync GL_APIENTRY FenceSync_(GLenum condition, GLbitfield flags)
{
    EVENT("(GLenum condition = 0x%X, GLbitfield flags = 0x%X)", condition, flags);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return 0;
        }

        if (condition != GL_SYNC_GPU_COMMANDS_COMPLETE)
        {
            context->handleError(Error(GL_INVALID_ENUM));
            return 0;
        }

        if (flags != 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return 0;
        }

        GLsync fenceSync = context->createFenceSync();

        FenceSync *fenceSyncObject = context->getFenceSync(fenceSync);
        Error error = fenceSyncObject->set(condition, flags);
        if (error.isError())
        {
            context->deleteFenceSync(fenceSync);
            context->handleError(error);
            return NULL;
        }

        return fenceSync;
    }

    return NULL;
}

GLboolean GL_APIENTRY IsSync(GLsync sync)
{
    EVENT("(GLsync sync = 0x%0.8p)", sync);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return GL_FALSE;
        }

        return (context->getFenceSync(sync) != NULL);
    }

    return GL_FALSE;
}

void GL_APIENTRY DeleteSync(GLsync sync)
{
    EVENT("(GLsync sync = 0x%0.8p)", sync);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (sync != static_cast<GLsync>(0) && !context->getFenceSync(sync))
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        context->deleteFenceSync(sync);
    }
}

GLenum GL_APIENTRY ClientWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout)
{
    EVENT("(GLsync sync = 0x%0.8p, GLbitfield flags = 0x%X, GLuint64 timeout = %llu)",
          sync, flags, timeout);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return GL_WAIT_FAILED;
        }

        if ((flags & ~(GL_SYNC_FLUSH_COMMANDS_BIT)) != 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return GL_WAIT_FAILED;
        }

        FenceSync *fenceSync = context->getFenceSync(sync);

        if (!fenceSync)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return GL_WAIT_FAILED;
        }

        GLenum result = GL_WAIT_FAILED;
        Error error = fenceSync->clientWait(flags, timeout, &result);
        if (error.isError())
        {
            context->handleError(error);
            return GL_WAIT_FAILED;
        }

        return result;
    }

    return GL_FALSE;
}

void GL_APIENTRY WaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout)
{
    EVENT("(GLsync sync = 0x%0.8p, GLbitfield flags = 0x%X, GLuint64 timeout = %llu)",
          sync, flags, timeout);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (flags != 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        if (timeout != GL_TIMEOUT_IGNORED)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        FenceSync *fenceSync = context->getFenceSync(sync);

        if (!fenceSync)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        Error error = fenceSync->serverWait(flags, timeout);
        if (error.isError())
        {
            context->handleError(error);
        }
    }
}

void GL_APIENTRY GetInteger64v(GLenum pname, GLint64* params)
{
    EVENT("(GLenum pname = 0x%X, GLint64* params = 0x%0.8p)",
          pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        GLenum nativeType;
        unsigned int numParams = 0;
        if (!ValidateStateQuery(context, pname, &nativeType, &numParams))
        {
            return;
        }

        if (nativeType == GL_INT_64_ANGLEX)
        {
            context->getInteger64v(pname, params);
        }
        else
        {
            CastStateValues(context, nativeType, pname, numParams, params);
        }
    }
}

void GL_APIENTRY GetSynciv(GLsync sync, GLenum pname, GLsizei bufSize, GLsizei* length, GLint* values)
{
    EVENT("(GLsync sync = 0x%0.8p, GLenum pname = 0x%X, GLsizei bufSize = %d, GLsizei* length = 0x%0.8p, GLint* values = 0x%0.8p)",
          sync, pname, bufSize, length, values);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (bufSize < 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        FenceSync *fenceSync = context->getFenceSync(sync);

        if (!fenceSync)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        switch (pname)
        {
          case GL_OBJECT_TYPE:     values[0] = static_cast<GLint>(GL_SYNC_FENCE);              break;
          case GL_SYNC_CONDITION:  values[0] = static_cast<GLint>(fenceSync->getCondition());  break;
          case GL_SYNC_FLAGS:      values[0] = static_cast<GLint>(fenceSync->getFlags());      break;

          case GL_SYNC_STATUS:
            {
                Error error = fenceSync->getStatus(values);
                if (error.isError())
                {
                    context->handleError(error);
                    return;
                }
                break;
            }

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }
    }
}

void GL_APIENTRY GetInteger64i_v(GLenum target, GLuint index, GLint64* data)
{
    EVENT("(GLenum target = 0x%X, GLuint index = %u, GLint64* data = 0x%0.8p)",
          target, index, data);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        const Caps &caps = context->getCaps();
        switch (target)
        {
          case GL_TRANSFORM_FEEDBACK_BUFFER_START:
          case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
          case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
            if (index >= caps.maxTransformFeedbackSeparateAttributes)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
            break;

          case GL_UNIFORM_BUFFER_START:
          case GL_UNIFORM_BUFFER_SIZE:
          case GL_UNIFORM_BUFFER_BINDING:
            if (index >= caps.maxUniformBufferBindings)
            {
                context->handleError(Error(GL_INVALID_VALUE));
                return;
            }
            break;

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        if (!(context->getIndexedInteger64v(target, index, data)))
        {
            GLenum nativeType;
            unsigned int numParams = 0;
            if (!context->getIndexedQueryParameterInfo(target, &nativeType, &numParams))
            {
                context->handleError(Error(GL_INVALID_ENUM));
                return;
            }

            if (numParams == 0)
                return; // it is known that pname is valid, but there are no parameters to return

            if (nativeType == GL_INT)
            {
                GLint *intParams = new GLint[numParams];

                context->getIndexedIntegerv(target, index, intParams);

                for (unsigned int i = 0; i < numParams; ++i)
                {
                    data[i] = static_cast<GLint64>(intParams[i]);
                }

                delete [] intParams;
            }
            else
            {
                UNREACHABLE();
            }
        }
    }
}

void GL_APIENTRY GetBufferParameteri64v(GLenum target, GLenum pname, GLint64* params)
{
    EVENT("(GLenum target = 0x%X, GLenum pname = 0x%X, GLint64* params = 0x%0.8p)",
          target, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (!ValidBufferTarget(context, target))
        {
            context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        if (!ValidBufferParameter(context, pname))
        {
            context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        Buffer *buffer = context->getGLState().getTargetBuffer(target);

        if (!buffer)
        {
            // A null buffer means that "0" is bound to the requested buffer target
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        switch (pname)
        {
          case GL_BUFFER_USAGE:
            *params = static_cast<GLint64>(buffer->getUsage());
            break;
          case GL_BUFFER_SIZE:
            *params = buffer->getSize();
            break;
          case GL_BUFFER_ACCESS_FLAGS:
            *params = static_cast<GLint64>(buffer->getAccessFlags());
            break;
          case GL_BUFFER_MAPPED:
            *params = static_cast<GLint64>(buffer->isMapped());
            break;
          case GL_BUFFER_MAP_OFFSET:
            *params = buffer->getMapOffset();
            break;
          case GL_BUFFER_MAP_LENGTH:
            *params = buffer->getMapLength();
            break;
          default: UNREACHABLE(); break;
        }
    }
}

void GL_APIENTRY GenSamplers(GLsizei count, GLuint* samplers)
{
    EVENT("(GLsizei count = %d, GLuint* samplers = 0x%0.8p)", count, samplers);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateGenSamplers(context, count, samplers))
        {
            return;
        }

        for (int i = 0; i < count; i++)
        {
            samplers[i] = context->createSampler();
        }
    }
}

void GL_APIENTRY DeleteSamplers(GLsizei count, const GLuint* samplers)
{
    EVENT("(GLsizei count = %d, const GLuint* samplers = 0x%0.8p)", count, samplers);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateDeleteSamplers(context, count, samplers))
        {
            return;
        }

        for (int i = 0; i < count; i++)
        {
            context->deleteSampler(samplers[i]);
        }
    }
}

GLboolean GL_APIENTRY IsSampler(GLuint sampler)
{
    EVENT("(GLuint sampler = %u)", sampler);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return GL_FALSE;
        }

        return context->isSampler(sampler);
    }

    return GL_FALSE;
}

void GL_APIENTRY BindSampler(GLuint unit, GLuint sampler)
{
    EVENT("(GLuint unit = %u, GLuint sampler = %u)", unit, sampler);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (sampler != 0 && !context->isSampler(sampler))
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (unit >= context->getCaps().maxCombinedTextureImageUnits)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        context->bindSampler(unit, sampler);
    }
}

void GL_APIENTRY SamplerParameteri(GLuint sampler, GLenum pname, GLint param)
{
    EVENT("(GLuint sampler = %u, GLenum pname = 0x%X, GLint param = %d)", sampler, pname, param);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateSamplerParameteri(context, sampler, pname, param))
        {
            return;
        }

        context->samplerParameteri(sampler, pname, param);
    }
}

void GL_APIENTRY SamplerParameteriv(GLuint sampler, GLenum pname, const GLint* param)
{
    SamplerParameteri(sampler, pname, *param);
}

void GL_APIENTRY SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param)
{
    EVENT("(GLuint sampler = %u, GLenum pname = 0x%X, GLfloat param = %g)", sampler, pname, param);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateSamplerParameterf(context, sampler, pname, param))
        {
            return;
        }

        context->samplerParameterf(sampler, pname, param);
    }
}

void GL_APIENTRY SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat* param)
{
    SamplerParameterf(sampler, pname, *param);
}

void GL_APIENTRY GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint* params)
{
    EVENT("(GLuint sampler = %u, GLenum pname = 0x%X, GLint* params = 0x%0.8p)", sampler, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (!ValidateSamplerObjectParameter(context, pname))
        {
            return;
        }

        if (!context->isSampler(sampler))
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        *params = context->getSamplerParameteri(sampler, pname);
    }
}

void GL_APIENTRY GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat* params)
{
    EVENT("(GLuint sample = %ur, GLenum pname = 0x%X, GLfloat* params = 0x%0.8p)", sampler, pname, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (!ValidateSamplerObjectParameter(context, pname))
        {
            return;
        }

        if (!context->isSampler(sampler))
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        *params = context->getSamplerParameterf(sampler, pname);
    }
}

void GL_APIENTRY VertexAttribDivisor(GLuint index, GLuint divisor)
{
    EVENT("(GLuint index = %u, GLuint divisor = %u)", index, divisor);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (index >= MAX_VERTEX_ATTRIBS)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        context->setVertexAttribDivisor(index, divisor);
    }
}

void GL_APIENTRY BindTransformFeedback(GLenum target, GLuint id)
{
    EVENT("(GLenum target = 0x%X, GLuint id = %u)", target, id);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        switch (target)
        {
          case GL_TRANSFORM_FEEDBACK:
            {
                // Cannot bind a transform feedback object if the current one is started and not paused (3.0.2 pg 85 section 2.14.1)
                TransformFeedback *curTransformFeedback =
                    context->getGLState().getCurrentTransformFeedback();
                if (curTransformFeedback && curTransformFeedback->isActive() && !curTransformFeedback->isPaused())
                {
                    context->handleError(Error(GL_INVALID_OPERATION));
                    return;
                }

                // Cannot bind a transform feedback object that does not exist (3.0.2 pg 85 section 2.14.1)
                if (!context->isTransformFeedbackGenerated(id))
                {
                    context->handleError(
                        Error(GL_INVALID_OPERATION,
                              "Cannot bind a transform feedback object that does not exist."));
                    return;
                }

                context->bindTransformFeedback(id);
            }
            break;

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }
    }
}

void GL_APIENTRY DeleteTransformFeedbacks(GLsizei n, const GLuint* ids)
{
    EVENT("(GLsizei n = %d, const GLuint* ids = 0x%0.8p)", n, ids);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateDeleteTransformFeedbacks(context, n, ids))
        {
            return;
        }

        for (int i = 0; i < n; i++)
        {
            context->deleteTransformFeedback(ids[i]);
        }
    }
}

void GL_APIENTRY GenTransformFeedbacks(GLsizei n, GLuint* ids)
{
    EVENT("(GLsizei n = %d, GLuint* ids = 0x%0.8p)", n, ids);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() && !ValidateGenTransformFeedbacks(context, n, ids))
        {
            return;
        }

        for (int i = 0; i < n; i++)
        {
            ids[i] = context->createTransformFeedback();
        }
    }
}

GLboolean GL_APIENTRY IsTransformFeedback(GLuint id)
{
    EVENT("(GLuint id = %u)", id);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return GL_FALSE;
        }

        if (id == 0)
        {
            // The 3.0.4 spec [section 6.1.11] states that if ID is zero, IsTransformFeedback
            // returns FALSE
            return GL_FALSE;
        }

        const TransformFeedback *transformFeedback = context->getTransformFeedback(id);
        return ((transformFeedback != nullptr) ? GL_TRUE : GL_FALSE);
    }

    return GL_FALSE;
}

void GL_APIENTRY PauseTransformFeedback(void)
{
    EVENT("(void)");

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        TransformFeedback *transformFeedback = context->getGLState().getCurrentTransformFeedback();
        ASSERT(transformFeedback != NULL);

        // Current transform feedback must be active and not paused in order to pause (3.0.2 pg 86)
        if (!transformFeedback->isActive() || transformFeedback->isPaused())
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        transformFeedback->pause();
    }
}

void GL_APIENTRY ResumeTransformFeedback(void)
{
    EVENT("(void)");

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        TransformFeedback *transformFeedback = context->getGLState().getCurrentTransformFeedback();
        ASSERT(transformFeedback != NULL);

        // Current transform feedback must be active and paused in order to resume (3.0.2 pg 86)
        if (!transformFeedback->isActive() || !transformFeedback->isPaused())
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        transformFeedback->resume();
    }
}

void GL_APIENTRY GetProgramBinary(GLuint program, GLsizei bufSize, GLsizei* length, GLenum* binaryFormat, GLvoid* binary)
{
    EVENT("(GLuint program = %u, GLsizei bufSize = %d, GLsizei* length = 0x%0.8p, GLenum* binaryFormat = 0x%0.8p, GLvoid* binary = 0x%0.8p)",
          program, bufSize, length, binaryFormat, binary);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateGetProgramBinary(context, program, bufSize, length, binaryFormat, binary))
        {
            return;
        }

        Program *programObject = context->getProgram(program);
        ASSERT(programObject != nullptr);

        Error error = programObject->saveBinary(binaryFormat, binary, bufSize, length);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

void GL_APIENTRY ProgramBinary(GLuint program, GLenum binaryFormat, const GLvoid* binary, GLsizei length)
{
    EVENT("(GLuint program = %u, GLenum binaryFormat = 0x%X, const GLvoid* binary = 0x%0.8p, GLsizei length = %d)",
          program, binaryFormat, binary, length);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!ValidateProgramBinary(context, program, binaryFormat, binary, length))
        {
            return;
        }

        Program *programObject = context->getProgram(program);
        ASSERT(programObject != nullptr);

        Error error = programObject->loadBinary(binaryFormat, binary, length);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

void GL_APIENTRY ProgramParameteri(GLuint program, GLenum pname, GLint value)
{
    EVENT("(GLuint program = %u, GLenum pname = 0x%X, GLint value = %d)",
          program, pname, value);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateProgramParameteri(context, program, pname, value))
        {
            return;
        }

        context->programParameteri(program, pname, value);
    }
}

void GL_APIENTRY InvalidateFramebuffer(GLenum target, GLsizei numAttachments, const GLenum* attachments)
{
    EVENT("(GLenum target = 0x%X, GLsizei numAttachments = %d, const GLenum* attachments = 0x%0.8p)",
          target, numAttachments, attachments);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateInvalidateFramebuffer(context, target, numAttachments, attachments))
        {
            return;
        }

        context->invalidateFramebuffer(target, numAttachments, attachments);
    }
}

void GL_APIENTRY InvalidateSubFramebuffer(GLenum target, GLsizei numAttachments, const GLenum* attachments, GLint x, GLint y, GLsizei width, GLsizei height)
{
    EVENT("(GLenum target = 0x%X, GLsizei numAttachments = %d, const GLenum* attachments = 0x%0.8p, GLint x = %d, "
          "GLint y = %d, GLsizei width = %d, GLsizei height = %d)",
          target, numAttachments, attachments, x, y, width, height);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (!context->skipValidation() &&
            !ValidateInvalidateFramebuffer(context, target, numAttachments, attachments))
        {
            return;
        }

        context->invalidateSubFramebuffer(target, numAttachments, attachments, x, y, width, height);
    }
}

void GL_APIENTRY TexStorage2D(GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height)
{
    EVENT("(GLenum target = 0x%X, GLsizei levels = %d, GLenum internalformat = 0x%X, GLsizei width = %d, GLsizei height = %d)",
          target, levels, internalformat, width, height);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (!ValidateES3TexStorage2DParameters(context, target, levels, internalformat, width,
                                               height, 1))
        {
            return;
        }

        Extents size(width, height, 1);
        Texture *texture = context->getTargetTexture(target);
        Error error = texture->setStorage(target, levels, internalformat, size);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

void GL_APIENTRY TexStorage3D(GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth)
{
    EVENT("(GLenum target = 0x%X, GLsizei levels = %d, GLenum internalformat = 0x%X, GLsizei width = %d, "
          "GLsizei height = %d, GLsizei depth = %d)",
          target, levels, internalformat, width, height, depth);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        if (!ValidateES3TexStorage3DParameters(context, target, levels, internalformat, width,
                                               height, depth))
        {
            return;
        }

        Extents size(width, height, depth);
        Texture *texture = context->getTargetTexture(target);
        Error error = texture->setStorage(target, levels, internalformat, size);
        if (error.isError())
        {
            context->handleError(error);
            return;
        }
    }
}

void GL_APIENTRY GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname, GLsizei bufSize, GLint* params)
{
    EVENT("(GLenum target = 0x%X, GLenum internalformat = 0x%X, GLenum pname = 0x%X, GLsizei bufSize = %d, "
          "GLint* params = 0x%0.8p)",
          target, internalformat, pname, bufSize, params);

    Context *context = GetValidGlobalContext();
    if (context)
    {
        if (context->getClientVersion() < 3)
        {
            context->handleError(Error(GL_INVALID_OPERATION));
            return;
        }

        const TextureCaps &formatCaps = context->getTextureCaps().get(internalformat);
        if (!formatCaps.renderable)
        {
            context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        if (target != GL_RENDERBUFFER)
        {
            context->handleError(Error(GL_INVALID_ENUM));
            return;
        }

        if (bufSize < 0)
        {
            context->handleError(Error(GL_INVALID_VALUE));
            return;
        }

        switch (pname)
        {
          case GL_NUM_SAMPLE_COUNTS:
            if (bufSize != 0)
            {
                *params = static_cast<GLint>(formatCaps.sampleCounts.size());
            }
            break;

          case GL_SAMPLES:
            {
                size_t returnCount = std::min<size_t>(bufSize, formatCaps.sampleCounts.size());
                auto sampleReverseIt = formatCaps.sampleCounts.rbegin();
                for (size_t sampleIndex = 0; sampleIndex < returnCount; ++sampleIndex)
                {
                    params[sampleIndex] = *sampleReverseIt++;;
                }
            }
            break;

          default:
              context->handleError(Error(GL_INVALID_ENUM));
            return;
        }
    }
}

}
kc3-lang/angle/src/libGLESv2/entry_points_gles_3_0.cpp

Commit

kc3-lang/angle /src/libGLESv2/entry_points_gles_3_0.cpp
