ProgramGL.cpp

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Author : Olli Etuaho
Date : 2018-08-02 15:54:55
Hash : 81f891d0
Message : Make sure ProgramGL stays usable after failed glProgramBinary glProgramBinary may fail if the driver is incompatible with the binary that is being loaded. After this ANGLE falls back to recompiling the GLSL program from source, but this requires that the ProgramGL object used is still valid after a failed glProgramBinary call. Don't delete the GL program after a failed glProgramBinary call so that the fallback works as intended. BUG=angleproject:2751 Change-Id: I55c19d71414163b1cd9f898f304e4aa7052f6b16 Reviewed-on: https://chromium-review.googlesource.com/1160540 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
src/libANGLE/renderer/gl/ProgramGL.cpp
//
// Copyright 2015 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.
//

// ProgramGL.cpp: Implements the class methods for ProgramGL.

#include "libANGLE/renderer/gl/ProgramGL.h"

#include "common/angleutils.h"
#include "common/bitset_utils.h"
#include "common/debug.h"
#include "common/string_utils.h"
#include "common/utilities.h"
#include "libANGLE/Context.h"
#include "libANGLE/ProgramLinkedResources.h"
#include "libANGLE/Uniform.h"
#include "libANGLE/queryconversions.h"
#include "libANGLE/renderer/gl/ContextGL.h"
#include "libANGLE/renderer/gl/FunctionsGL.h"
#include "libANGLE/renderer/gl/ShaderGL.h"
#include "libANGLE/renderer/gl/StateManagerGL.h"
#include "libANGLE/renderer/gl/WorkaroundsGL.h"
#include "platform/Platform.h"

namespace rx
{

ProgramGL::ProgramGL(const gl::ProgramState &data,
                     const FunctionsGL *functions,
                     const WorkaroundsGL &workarounds,
                     StateManagerGL *stateManager,
                     bool enablePathRendering)
    : ProgramImpl(data),
      mFunctions(functions),
      mWorkarounds(workarounds),
      mStateManager(stateManager),
      mEnablePathRendering(enablePathRendering),
      mMultiviewBaseViewLayerIndexUniformLocation(-1),
      mProgramID(0)
{
    ASSERT(mFunctions);
    ASSERT(mStateManager);

    mProgramID = mFunctions->createProgram();
}

ProgramGL::~ProgramGL()
{
    mFunctions->deleteProgram(mProgramID);
    mProgramID = 0;
}

gl::LinkResult ProgramGL::load(const gl::Context *context,
                               gl::InfoLog &infoLog,
                               gl::BinaryInputStream *stream)
{
    preLink();

    // Read the binary format, size and blob
    GLenum binaryFormat   = stream->readInt<GLenum>();
    GLint binaryLength    = stream->readInt<GLint>();
    const uint8_t *binary = stream->data() + stream->offset();
    stream->skip(binaryLength);

    // Load the binary
    mFunctions->programBinary(mProgramID, binaryFormat, binary, binaryLength);

    // Verify that the program linked
    if (!checkLinkStatus(infoLog))
    {
        return false;
    }

    postLink();
    reapplyUBOBindingsIfNeeded(context);

    return true;
}

void ProgramGL::save(const gl::Context *context, gl::BinaryOutputStream *stream)
{
    GLint binaryLength = 0;
    mFunctions->getProgramiv(mProgramID, GL_PROGRAM_BINARY_LENGTH, &binaryLength);

    std::vector<uint8_t> binary(std::max(binaryLength, 1));
    GLenum binaryFormat = GL_NONE;
    mFunctions->getProgramBinary(mProgramID, binaryLength, &binaryLength, &binaryFormat,
                                 binary.data());

    stream->writeInt(binaryFormat);
    stream->writeInt(binaryLength);
    stream->writeBytes(binary.data(), binaryLength);

    reapplyUBOBindingsIfNeeded(context);
}

void ProgramGL::reapplyUBOBindingsIfNeeded(const gl::Context *context)
{
    // Re-apply UBO bindings to work around driver bugs.
    const WorkaroundsGL &workaroundsGL = GetImplAs<ContextGL>(context)->getWorkaroundsGL();
    if (workaroundsGL.reapplyUBOBindingsAfterUsingBinaryProgram)
    {
        const auto &blocks = mState.getUniformBlocks();
        for (size_t blockIndex : mState.getActiveUniformBlockBindingsMask())
        {
            setUniformBlockBinding(static_cast<GLuint>(blockIndex), blocks[blockIndex].binding);
        }
    }
}

void ProgramGL::setBinaryRetrievableHint(bool retrievable)
{
    // glProgramParameteri isn't always available on ES backends.
    if (mFunctions->programParameteri)
    {
        mFunctions->programParameteri(mProgramID, GL_PROGRAM_BINARY_RETRIEVABLE_HINT,
                                      retrievable ? GL_TRUE : GL_FALSE);
    }
}

void ProgramGL::setSeparable(bool separable)
{
    mFunctions->programParameteri(mProgramID, GL_PROGRAM_SEPARABLE, separable ? GL_TRUE : GL_FALSE);
}

gl::LinkResult ProgramGL::link(const gl::Context *context,
                               const gl::ProgramLinkedResources &resources,
                               gl::InfoLog &infoLog)
{
    preLink();

    if (mState.getAttachedShader(gl::ShaderType::Compute))
    {
        const ShaderGL *computeShaderGL =
            GetImplAs<ShaderGL>(mState.getAttachedShader(gl::ShaderType::Compute));

        mFunctions->attachShader(mProgramID, computeShaderGL->getShaderID());

        // Link and verify
        mFunctions->linkProgram(mProgramID);

        // Detach the shaders
        mFunctions->detachShader(mProgramID, computeShaderGL->getShaderID());
    }
    else
    {
        // Set the transform feedback state
        std::vector<std::string> transformFeedbackVaryingMappedNames;
        for (const auto &tfVarying : mState.getTransformFeedbackVaryingNames())
        {
            std::string tfVaryingMappedName =
                mState.getAttachedShader(gl::ShaderType::Vertex)
                    ->getTransformFeedbackVaryingMappedName(tfVarying, context);
            transformFeedbackVaryingMappedNames.push_back(tfVaryingMappedName);
        }

        if (transformFeedbackVaryingMappedNames.empty())
        {
            if (mFunctions->transformFeedbackVaryings)
            {
                mFunctions->transformFeedbackVaryings(mProgramID, 0, nullptr,
                                                      mState.getTransformFeedbackBufferMode());
            }
        }
        else
        {
            ASSERT(mFunctions->transformFeedbackVaryings);
            std::vector<const GLchar *> transformFeedbackVaryings;
            for (const auto &varying : transformFeedbackVaryingMappedNames)
            {
                transformFeedbackVaryings.push_back(varying.c_str());
            }
            mFunctions->transformFeedbackVaryings(
                mProgramID, static_cast<GLsizei>(transformFeedbackVaryingMappedNames.size()),
                &transformFeedbackVaryings[0], mState.getTransformFeedbackBufferMode());
        }

        const ShaderGL *vertexShaderGL =
            GetImplAs<ShaderGL>(mState.getAttachedShader(gl::ShaderType::Vertex));
        const ShaderGL *fragmentShaderGL =
            GetImplAs<ShaderGL>(mState.getAttachedShader(gl::ShaderType::Fragment));
        const ShaderGL *geometryShaderGL = rx::SafeGetImplAs<ShaderGL, gl::Shader>(
            mState.getAttachedShader(gl::ShaderType::Geometry));

        // Attach the shaders
        mFunctions->attachShader(mProgramID, vertexShaderGL->getShaderID());
        mFunctions->attachShader(mProgramID, fragmentShaderGL->getShaderID());
        if (geometryShaderGL)
        {
            mFunctions->attachShader(mProgramID, geometryShaderGL->getShaderID());
        }

        // Bind attribute locations to match the GL layer.
        for (const sh::Attribute &attribute : mState.getAttributes())
        {
            if (!attribute.active || attribute.isBuiltIn())
            {
                continue;
            }

            mFunctions->bindAttribLocation(mProgramID, attribute.location,
                                           attribute.mappedName.c_str());
        }

        // Link and verify
        mFunctions->linkProgram(mProgramID);

        // Detach the shaders
        mFunctions->detachShader(mProgramID, vertexShaderGL->getShaderID());
        mFunctions->detachShader(mProgramID, fragmentShaderGL->getShaderID());
        if (geometryShaderGL)
        {
            mFunctions->detachShader(mProgramID, geometryShaderGL->getShaderID());
        }
    }

    // Verify the link
    if (!checkLinkStatus(infoLog))
    {
        return false;
    }

    if (mWorkarounds.alwaysCallUseProgramAfterLink)
    {
        mStateManager->forceUseProgram(mProgramID);
    }

    linkResources(resources);
    postLink();

    return true;
}

GLboolean ProgramGL::validate(const gl::Caps & /*caps*/, gl::InfoLog * /*infoLog*/)
{
    // TODO(jmadill): implement validate
    return true;
}

void ProgramGL::setUniform1fv(GLint location, GLsizei count, const GLfloat *v)
{
    if (mFunctions->programUniform1fv != nullptr)
    {
        mFunctions->programUniform1fv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform1fv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform2fv(GLint location, GLsizei count, const GLfloat *v)
{
    if (mFunctions->programUniform2fv != nullptr)
    {
        mFunctions->programUniform2fv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform2fv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform3fv(GLint location, GLsizei count, const GLfloat *v)
{
    if (mFunctions->programUniform3fv != nullptr)
    {
        mFunctions->programUniform3fv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform3fv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform4fv(GLint location, GLsizei count, const GLfloat *v)
{
    if (mFunctions->programUniform4fv != nullptr)
    {
        mFunctions->programUniform4fv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform4fv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform1iv(GLint location, GLsizei count, const GLint *v)
{
    if (mFunctions->programUniform1iv != nullptr)
    {
        mFunctions->programUniform1iv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform1iv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform2iv(GLint location, GLsizei count, const GLint *v)
{
    if (mFunctions->programUniform2iv != nullptr)
    {
        mFunctions->programUniform2iv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform2iv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform3iv(GLint location, GLsizei count, const GLint *v)
{
    if (mFunctions->programUniform3iv != nullptr)
    {
        mFunctions->programUniform3iv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform3iv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform4iv(GLint location, GLsizei count, const GLint *v)
{
    if (mFunctions->programUniform4iv != nullptr)
    {
        mFunctions->programUniform4iv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform4iv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform1uiv(GLint location, GLsizei count, const GLuint *v)
{
    if (mFunctions->programUniform1uiv != nullptr)
    {
        mFunctions->programUniform1uiv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform1uiv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform2uiv(GLint location, GLsizei count, const GLuint *v)
{
    if (mFunctions->programUniform2uiv != nullptr)
    {
        mFunctions->programUniform2uiv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform2uiv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform3uiv(GLint location, GLsizei count, const GLuint *v)
{
    if (mFunctions->programUniform3uiv != nullptr)
    {
        mFunctions->programUniform3uiv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform3uiv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniform4uiv(GLint location, GLsizei count, const GLuint *v)
{
    if (mFunctions->programUniform4uiv != nullptr)
    {
        mFunctions->programUniform4uiv(mProgramID, uniLoc(location), count, v);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniform4uiv(uniLoc(location), count, v);
    }
}

void ProgramGL::setUniformMatrix2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
{
    if (mFunctions->programUniformMatrix2fv != nullptr)
    {
        mFunctions->programUniformMatrix2fv(mProgramID, uniLoc(location), count, transpose, value);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniformMatrix2fv(uniLoc(location), count, transpose, value);
    }
}

void ProgramGL::setUniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
{
    if (mFunctions->programUniformMatrix3fv != nullptr)
    {
        mFunctions->programUniformMatrix3fv(mProgramID, uniLoc(location), count, transpose, value);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniformMatrix3fv(uniLoc(location), count, transpose, value);
    }
}

void ProgramGL::setUniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
{
    if (mFunctions->programUniformMatrix4fv != nullptr)
    {
        mFunctions->programUniformMatrix4fv(mProgramID, uniLoc(location), count, transpose, value);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniformMatrix4fv(uniLoc(location), count, transpose, value);
    }
}

void ProgramGL::setUniformMatrix2x3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
{
    if (mFunctions->programUniformMatrix2x3fv != nullptr)
    {
        mFunctions->programUniformMatrix2x3fv(mProgramID, uniLoc(location), count, transpose,
                                              value);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniformMatrix2x3fv(uniLoc(location), count, transpose, value);
    }
}

void ProgramGL::setUniformMatrix3x2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
{
    if (mFunctions->programUniformMatrix3x2fv != nullptr)
    {
        mFunctions->programUniformMatrix3x2fv(mProgramID, uniLoc(location), count, transpose,
                                              value);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniformMatrix3x2fv(uniLoc(location), count, transpose, value);
    }
}

void ProgramGL::setUniformMatrix2x4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
{
    if (mFunctions->programUniformMatrix2x4fv != nullptr)
    {
        mFunctions->programUniformMatrix2x4fv(mProgramID, uniLoc(location), count, transpose,
                                              value);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniformMatrix2x4fv(uniLoc(location), count, transpose, value);
    }
}

void ProgramGL::setUniformMatrix4x2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
{
    if (mFunctions->programUniformMatrix4x2fv != nullptr)
    {
        mFunctions->programUniformMatrix4x2fv(mProgramID, uniLoc(location), count, transpose,
                                              value);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniformMatrix4x2fv(uniLoc(location), count, transpose, value);
    }
}

void ProgramGL::setUniformMatrix3x4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
{
    if (mFunctions->programUniformMatrix3x4fv != nullptr)
    {
        mFunctions->programUniformMatrix3x4fv(mProgramID, uniLoc(location), count, transpose,
                                              value);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniformMatrix3x4fv(uniLoc(location), count, transpose, value);
    }
}

void ProgramGL::setUniformMatrix4x3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)
{
    if (mFunctions->programUniformMatrix4x3fv != nullptr)
    {
        mFunctions->programUniformMatrix4x3fv(mProgramID, uniLoc(location), count, transpose,
                                              value);
    }
    else
    {
        mStateManager->useProgram(mProgramID);
        mFunctions->uniformMatrix4x3fv(uniLoc(location), count, transpose, value);
    }
}

void ProgramGL::setUniformBlockBinding(GLuint uniformBlockIndex, GLuint uniformBlockBinding)
{
    // Lazy init
    if (mUniformBlockRealLocationMap.empty())
    {
        mUniformBlockRealLocationMap.reserve(mState.getUniformBlocks().size());
        for (const gl::InterfaceBlock &uniformBlock : mState.getUniformBlocks())
        {
            const std::string &mappedNameWithIndex = uniformBlock.mappedNameWithArrayIndex();
            GLuint blockIndex =
                mFunctions->getUniformBlockIndex(mProgramID, mappedNameWithIndex.c_str());
            mUniformBlockRealLocationMap.push_back(blockIndex);
        }
    }

    GLuint realBlockIndex = mUniformBlockRealLocationMap[uniformBlockIndex];
    if (realBlockIndex != GL_INVALID_INDEX)
    {
        mFunctions->uniformBlockBinding(mProgramID, realBlockIndex, uniformBlockBinding);
    }
}

GLuint ProgramGL::getProgramID() const
{
    return mProgramID;
}

bool ProgramGL::getUniformBlockSize(const std::string & /* blockName */,
                                    const std::string &blockMappedName,
                                    size_t *sizeOut) const
{
    ASSERT(mProgramID != 0u);

    GLuint blockIndex = mFunctions->getUniformBlockIndex(mProgramID, blockMappedName.c_str());
    if (blockIndex == GL_INVALID_INDEX)
    {
        *sizeOut = 0;
        return false;
    }

    GLint dataSize = 0;
    mFunctions->getActiveUniformBlockiv(mProgramID, blockIndex, GL_UNIFORM_BLOCK_DATA_SIZE,
                                        &dataSize);
    *sizeOut = static_cast<size_t>(dataSize);
    return true;
}

bool ProgramGL::getUniformBlockMemberInfo(const std::string & /* memberUniformName */,
                                          const std::string &memberUniformMappedName,
                                          sh::BlockMemberInfo *memberInfoOut) const
{
    GLuint uniformIndex;
    const GLchar *memberNameGLStr = memberUniformMappedName.c_str();
    mFunctions->getUniformIndices(mProgramID, 1, &memberNameGLStr, &uniformIndex);

    if (uniformIndex == GL_INVALID_INDEX)
    {
        *memberInfoOut = sh::BlockMemberInfo::getDefaultBlockInfo();
        return false;
    }

    mFunctions->getActiveUniformsiv(mProgramID, 1, &uniformIndex, GL_UNIFORM_OFFSET,
                                    &memberInfoOut->offset);
    mFunctions->getActiveUniformsiv(mProgramID, 1, &uniformIndex, GL_UNIFORM_ARRAY_STRIDE,
                                    &memberInfoOut->arrayStride);
    mFunctions->getActiveUniformsiv(mProgramID, 1, &uniformIndex, GL_UNIFORM_MATRIX_STRIDE,
                                    &memberInfoOut->matrixStride);

    // TODO(jmadill): possibly determine this at the gl::Program level.
    GLint isRowMajorMatrix = 0;
    mFunctions->getActiveUniformsiv(mProgramID, 1, &uniformIndex, GL_UNIFORM_IS_ROW_MAJOR,
                                    &isRowMajorMatrix);
    memberInfoOut->isRowMajorMatrix = gl::ConvertToBool(isRowMajorMatrix);
    return true;
}

bool ProgramGL::getShaderStorageBlockMemberInfo(const std::string & /* memberName */,
                                                const std::string &memberUniformMappedName,
                                                sh::BlockMemberInfo *memberInfoOut) const
{
    const GLchar *memberNameGLStr = memberUniformMappedName.c_str();
    GLuint index =
        mFunctions->getProgramResourceIndex(mProgramID, GL_BUFFER_VARIABLE, memberNameGLStr);

    if (index == GL_INVALID_INDEX)
    {
        *memberInfoOut = sh::BlockMemberInfo::getDefaultBlockInfo();
        return false;
    }

    constexpr int kPropCount             = 5;
    std::array<GLenum, kPropCount> props = {
        {GL_ARRAY_STRIDE, GL_IS_ROW_MAJOR, GL_MATRIX_STRIDE, GL_OFFSET, GL_TOP_LEVEL_ARRAY_STRIDE}};
    std::array<GLint, kPropCount> params;
    GLsizei length;
    mFunctions->getProgramResourceiv(mProgramID, GL_BUFFER_VARIABLE, index, kPropCount,
                                     props.data(), kPropCount, &length, params.data());
    ASSERT(kPropCount == length);
    memberInfoOut->arrayStride         = params[0];
    memberInfoOut->isRowMajorMatrix    = params[1] != 0;
    memberInfoOut->matrixStride        = params[2];
    memberInfoOut->offset              = params[3];
    memberInfoOut->topLevelArrayStride = params[4];

    return true;
}

bool ProgramGL::getShaderStorageBlockSize(const std::string &name,
                                          const std::string &mappedName,
                                          size_t *sizeOut) const
{
    const GLchar *nameGLStr = mappedName.c_str();
    GLuint index =
        mFunctions->getProgramResourceIndex(mProgramID, GL_SHADER_STORAGE_BLOCK, nameGLStr);

    if (index == GL_INVALID_INDEX)
    {
        *sizeOut = 0;
        return false;
    }

    GLenum prop    = GL_BUFFER_DATA_SIZE;
    GLsizei length = 0;
    GLint dataSize = 0;
    mFunctions->getProgramResourceiv(mProgramID, GL_SHADER_STORAGE_BLOCK, index, 1, &prop, 1,
                                     &length, &dataSize);
    *sizeOut = static_cast<size_t>(dataSize);
    return true;
}

void ProgramGL::getAtomicCounterBufferSizeMap(std::map<int, unsigned int> *sizeMapOut) const
{
    if (mFunctions->getProgramInterfaceiv == nullptr)
    {
        return;
    }

    int resourceCount = 0;
    mFunctions->getProgramInterfaceiv(mProgramID, GL_ATOMIC_COUNTER_BUFFER, GL_ACTIVE_RESOURCES,
                                      &resourceCount);

    for (int index = 0; index < resourceCount; index++)
    {
        constexpr int kPropCount             = 2;
        std::array<GLenum, kPropCount> props = {{GL_BUFFER_BINDING, GL_BUFFER_DATA_SIZE}};
        std::array<GLint, kPropCount> params;
        GLsizei length;
        mFunctions->getProgramResourceiv(mProgramID, GL_ATOMIC_COUNTER_BUFFER, index, kPropCount,
                                         props.data(), kPropCount, &length, params.data());
        ASSERT(kPropCount == length);
        int bufferBinding           = params[0];
        unsigned int bufferDataSize = params[1];
        sizeMapOut->insert(std::pair<int, unsigned int>(bufferBinding, bufferDataSize));
    }
}

void ProgramGL::setPathFragmentInputGen(const std::string &inputName,
                                        GLenum genMode,
                                        GLint components,
                                        const GLfloat *coeffs)
{
    ASSERT(mEnablePathRendering);

    for (const auto &input : mPathRenderingFragmentInputs)
    {
        if (input.mappedName == inputName)
        {
            mFunctions->programPathFragmentInputGenNV(mProgramID, input.location, genMode,
                                                      components, coeffs);
            ASSERT(mFunctions->getError() == GL_NO_ERROR);
            return;
        }
    }

}

void ProgramGL::preLink()
{
    // Reset the program state
    mUniformRealLocationMap.clear();
    mUniformBlockRealLocationMap.clear();
    mPathRenderingFragmentInputs.clear();

    mMultiviewBaseViewLayerIndexUniformLocation = -1;
}

bool ProgramGL::checkLinkStatus(gl::InfoLog &infoLog)
{
    GLint linkStatus = GL_FALSE;
    mFunctions->getProgramiv(mProgramID, GL_LINK_STATUS, &linkStatus);
    if (linkStatus == GL_FALSE)
    {
        // Linking or program binary loading failed, put the error into the info log.
        GLint infoLogLength = 0;
        mFunctions->getProgramiv(mProgramID, GL_INFO_LOG_LENGTH, &infoLogLength);

        // Info log length includes the null terminator, so 1 means that the info log is an empty
        // string.
        if (infoLogLength > 1)
        {
            std::vector<char> buf(infoLogLength);
            mFunctions->getProgramInfoLog(mProgramID, infoLogLength, nullptr, &buf[0]);

            infoLog << buf.data();

            WARN() << "Program link or binary loading failed: " << buf.data();
        }
        else
        {
            WARN() << "Program link or binary loading failed with no info log.";
        }

        // This may happen under normal circumstances if we're loading program binaries and the
        // driver or hardware has changed.
        ASSERT(mProgramID != 0);
        return false;
    }

    return true;
}

void ProgramGL::postLink()
{
    // Query the uniform information
    ASSERT(mUniformRealLocationMap.empty());
    const auto &uniformLocations = mState.getUniformLocations();
    const auto &uniforms = mState.getUniforms();
    mUniformRealLocationMap.resize(uniformLocations.size(), GL_INVALID_INDEX);
    for (size_t uniformLocation = 0; uniformLocation < uniformLocations.size(); uniformLocation++)
    {
        const auto &entry = uniformLocations[uniformLocation];
        if (!entry.used())
        {
            continue;
        }

        // From the GLES 3.0.5 spec:
        // "Locations for sequential array indices are not required to be sequential."
        const gl::LinkedUniform &uniform = uniforms[entry.index];
        std::stringstream fullNameStr;
        if (uniform.isArray())
        {
            ASSERT(angle::EndsWith(uniform.mappedName, "[0]"));
            fullNameStr << uniform.mappedName.substr(0, uniform.mappedName.length() - 3);
            fullNameStr << "[" << entry.arrayIndex << "]";
        }
        else
        {
            fullNameStr << uniform.mappedName;
        }
        const std::string &fullName = fullNameStr.str();

        GLint realLocation = mFunctions->getUniformLocation(mProgramID, fullName.c_str());
        mUniformRealLocationMap[uniformLocation] = realLocation;
    }

    if (mState.usesMultiview())
    {
        mMultiviewBaseViewLayerIndexUniformLocation =
            mFunctions->getUniformLocation(mProgramID, "multiviewBaseViewLayerIndex");
        ASSERT(mMultiviewBaseViewLayerIndexUniformLocation != -1);
    }

    // Discover CHROMIUM_path_rendering fragment inputs if enabled.
    if (!mEnablePathRendering)
        return;

    GLint numFragmentInputs = 0;
    mFunctions->getProgramInterfaceiv(mProgramID, GL_FRAGMENT_INPUT_NV, GL_ACTIVE_RESOURCES,
                                      &numFragmentInputs);
    if (numFragmentInputs <= 0)
        return;

    GLint maxNameLength = 0;
    mFunctions->getProgramInterfaceiv(mProgramID, GL_FRAGMENT_INPUT_NV, GL_MAX_NAME_LENGTH,
                                      &maxNameLength);
    ASSERT(maxNameLength);

    for (GLint i = 0; i < numFragmentInputs; ++i)
    {
        std::string mappedName;
        mappedName.resize(maxNameLength);

        GLsizei nameLen = 0;
        mFunctions->getProgramResourceName(mProgramID, GL_FRAGMENT_INPUT_NV, i, maxNameLength,
                                           &nameLen, &mappedName[0]);
        mappedName.resize(nameLen);

        // Ignore built-ins
        if (angle::BeginsWith(mappedName, "gl_"))
            continue;

        const GLenum kQueryProperties[] = {GL_LOCATION, GL_ARRAY_SIZE};
        GLint queryResults[ArraySize(kQueryProperties)];
        GLsizei queryLength = 0;

        mFunctions->getProgramResourceiv(
            mProgramID, GL_FRAGMENT_INPUT_NV, i, static_cast<GLsizei>(ArraySize(kQueryProperties)),
            kQueryProperties, static_cast<GLsizei>(ArraySize(queryResults)), &queryLength,
            queryResults);

        ASSERT(queryLength == static_cast<GLsizei>(ArraySize(kQueryProperties)));

        PathRenderingFragmentInput baseElementInput;
        baseElementInput.mappedName = mappedName;
        baseElementInput.location = queryResults[0];
        mPathRenderingFragmentInputs.push_back(std::move(baseElementInput));

        // If the input is an array it's denoted by [0] suffix on the variable
        // name. We'll then create an entry per each array index where index > 0
        if (angle::EndsWith(mappedName, "[0]"))
        {
            // drop the suffix
            mappedName.resize(mappedName.size() - 3);

            const auto arraySize    = queryResults[1];
            const auto baseLocation = queryResults[0];

            for (GLint arrayIndex = 1; arrayIndex < arraySize; ++arrayIndex)
            {
                PathRenderingFragmentInput arrayElementInput;
                arrayElementInput.mappedName = mappedName + "[" + ToString(arrayIndex) + "]";
                arrayElementInput.location = baseLocation + arrayIndex;
                mPathRenderingFragmentInputs.push_back(std::move(arrayElementInput));
            }
        }
    }
}

void ProgramGL::enableSideBySideRenderingPath() const
{
    ASSERT(mState.usesMultiview());
    ASSERT(mMultiviewBaseViewLayerIndexUniformLocation != -1);

    ASSERT(mFunctions->programUniform1i != nullptr);
    mFunctions->programUniform1i(mProgramID, mMultiviewBaseViewLayerIndexUniformLocation, -1);
}

void ProgramGL::enableLayeredRenderingPath(int baseViewIndex) const
{
    ASSERT(mState.usesMultiview());
    ASSERT(mMultiviewBaseViewLayerIndexUniformLocation != -1);

    ASSERT(mFunctions->programUniform1i != nullptr);
    mFunctions->programUniform1i(mProgramID, mMultiviewBaseViewLayerIndexUniformLocation,
                                 baseViewIndex);
}

void ProgramGL::getUniformfv(const gl::Context *context, GLint location, GLfloat *params) const
{
    mFunctions->getUniformfv(mProgramID, uniLoc(location), params);
}

void ProgramGL::getUniformiv(const gl::Context *context, GLint location, GLint *params) const
{
    mFunctions->getUniformiv(mProgramID, uniLoc(location), params);
}

void ProgramGL::getUniformuiv(const gl::Context *context, GLint location, GLuint *params) const
{
    mFunctions->getUniformuiv(mProgramID, uniLoc(location), params);
}

void ProgramGL::markUnusedUniformLocations(std::vector<gl::VariableLocation> *uniformLocations,
                                           std::vector<gl::SamplerBinding> *samplerBindings)
{
    GLint maxLocation = static_cast<GLint>(uniformLocations->size());
    for (GLint location = 0; location < maxLocation; ++location)
    {
        if (uniLoc(location) == -1)
        {
            auto &locationRef = (*uniformLocations)[location];
            if (mState.isSamplerUniformIndex(locationRef.index))
            {
                GLuint samplerIndex = mState.getSamplerIndexFromUniformIndex(locationRef.index);
                (*samplerBindings)[samplerIndex].unreferenced = true;
            }
            locationRef.markUnused();
        }
    }
}

void ProgramGL::linkResources(const gl::ProgramLinkedResources &resources)
{
    // Gather interface block info.
    auto getUniformBlockSize = [this](const std::string &name, const std::string &mappedName,
                                      size_t *sizeOut) {
        return this->getUniformBlockSize(name, mappedName, sizeOut);
    };

    auto getUniformBlockMemberInfo = [this](const std::string &name, const std::string &mappedName,
                                            sh::BlockMemberInfo *infoOut) {
        return this->getUniformBlockMemberInfo(name, mappedName, infoOut);
    };

    resources.uniformBlockLinker.linkBlocks(getUniformBlockSize, getUniformBlockMemberInfo);

    auto getShaderStorageBlockSize = [this](const std::string &name, const std::string &mappedName,
                                            size_t *sizeOut) {
        return this->getShaderStorageBlockSize(name, mappedName, sizeOut);
    };

    auto getShaderStorageBlockMemberInfo = [this](const std::string &name,
                                                  const std::string &mappedName,
                                                  sh::BlockMemberInfo *infoOut) {
        return this->getShaderStorageBlockMemberInfo(name, mappedName, infoOut);
    };
    resources.shaderStorageBlockLinker.linkBlocks(getShaderStorageBlockSize,
                                                  getShaderStorageBlockMemberInfo);

    // Gather atomic counter buffer info.
    std::map<int, unsigned int> sizeMap;
    getAtomicCounterBufferSizeMap(&sizeMap);
    resources.atomicCounterBufferLinker.link(sizeMap);
}

}  // namespace rx
kc3-lang/angle/src/libANGLE/renderer/gl/ProgramGL.cpp

Commit

kc3-lang/angle /src/libANGLE/renderer/gl/ProgramGL.cpp
