MultiviewTest.cpp

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Author : Jamie Madill
Date : 2020-07-02 16:21:59
Hash : ad782a84
Message : Tests: Use "__" to delineate test config names. This will allow the ANGLE test runner to identify test configs for tests that use parameterization to break up different test permutations with the same config. Note that GoogleTest doesn't allow for anything other than alphanumeric characters or "_" in test names. Bug: angleproject:3162 Change-Id: Iee215fbd8c397eef04dce0269da9b58ec568fce7 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2280402 Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>
src/tests/test_utils/MultiviewTest.cpp
//
// Copyright 2018 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.
//
// MultiviewTest:
//   Implementation of helpers for multiview testing.
//

#include "test_utils/MultiviewTest.h"
#include "platform/FeaturesD3D.h"
#include "test_utils/gl_raii.h"

namespace angle
{

GLuint CreateSimplePassthroughProgram(int numViews, ExtensionName multiviewExtension)
{
    std::string ext;
    switch (multiviewExtension)
    {
        case multiview:
            ext = "GL_OVR_multiview";
            break;
        case multiview2:
            ext = "GL_OVR_multiview2";
            break;
        default:
            // Unknown extension.
            break;
    }

    const std::string vsSource =
        "#version 300 es\n"
        "#extension " +
        ext +
        " : require\n"
        "layout(num_views = " +
        ToString(numViews) +
        ") in;\n"
        "layout(location=0) in vec2 vPosition;\n"
        "void main()\n"
        "{\n"
        "   gl_PointSize = 1.;\n"
        "   gl_Position = vec4(vPosition.xy, 0.0, 1.0);\n"
        "}\n";

    const std::string fsSource =
        "#version 300 es\n"
        "#extension " +
        ext +
        " : require\n"
        "precision mediump float;\n"
        "out vec4 col;\n"
        "void main()\n"
        "{\n"
        "   col = vec4(0,1,0,1);\n"
        "}\n";
    return CompileProgram(vsSource.c_str(), fsSource.c_str());
}

void CreateMultiviewBackingTextures(int samples,
                                    int viewWidth,
                                    int height,
                                    int numLayers,
                                    std::vector<GLuint> colorTextures,
                                    GLuint depthTexture,
                                    GLuint depthStencilTexture)
{
    // The same zero data is used to initialize both color and depth/stencil textures.
    std::vector<GLubyte> textureData;
    textureData.resize(viewWidth * height * numLayers * 4, 0u);

    // We can't upload data to multisample textures, so we clear them using a temporary framebuffer
    // instead. The current framebuffer binding is stored so we can restore it once we're done with
    // using the temporary framebuffers.
    GLint restoreDrawFramebuffer;
    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &restoreDrawFramebuffer);

    // Create color and depth textures.
    GLenum texTarget = (samples > 0) ? GL_TEXTURE_2D_MULTISAMPLE_ARRAY_OES : GL_TEXTURE_2D_ARRAY;
    for (auto colorTexture : colorTextures)
    {
        glBindTexture(texTarget, colorTexture);
        if (samples > 0)
        {
            glTexStorage3DMultisampleOES(texTarget, samples, GL_RGBA8, viewWidth, height, numLayers,
                                         false);

            GLFramebuffer tempFbo;
            glBindFramebuffer(GL_DRAW_FRAMEBUFFER, tempFbo);
            glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
            for (int layerIndex = 0; layerIndex < numLayers; ++layerIndex)
            {
                glFramebufferTextureLayer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, colorTexture,
                                          0, layerIndex);
                glClear(GL_COLOR_BUFFER_BIT);
            }
        }
        else
        {
            glTexImage3D(texTarget, 0, GL_RGBA8, viewWidth, height, numLayers, 0, GL_RGBA,
                         GL_UNSIGNED_BYTE, textureData.data());
            glTexParameteri(texTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
            glTexParameteri(texTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
        }
    }

    if (depthTexture != 0)
    {
        glBindTexture(texTarget, depthTexture);
        if (samples > 0)
        {
            glTexStorage3DMultisampleOES(texTarget, samples, GL_DEPTH_COMPONENT32F, viewWidth,
                                         height, numLayers, false);

            GLFramebuffer tempFbo;
            glBindFramebuffer(GL_DRAW_FRAMEBUFFER, tempFbo);
            glClearDepthf(0.0f);
            for (int layerIndex = 0; layerIndex < numLayers; ++layerIndex)
            {
                glFramebufferTextureLayer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, depthTexture, 0,
                                          layerIndex);
                glClear(GL_DEPTH_BUFFER_BIT);
            }
        }
        else
        {
            glTexImage3D(texTarget, 0, GL_DEPTH_COMPONENT32F, viewWidth, height, numLayers, 0,
                         GL_DEPTH_COMPONENT, GL_FLOAT, textureData.data());
        }
    }
    if (depthStencilTexture != 0)
    {
        glBindTexture(texTarget, depthStencilTexture);
        if (samples > 0)
        {
            glTexStorage3DMultisampleOES(texTarget, samples, GL_DEPTH24_STENCIL8, viewWidth, height,
                                         numLayers, false);

            GLFramebuffer tempFbo;
            glBindFramebuffer(GL_DRAW_FRAMEBUFFER, tempFbo);
            glClearDepthf(0.0f);
            glClearStencil(0);
            for (int layerIndex = 0; layerIndex < numLayers; ++layerIndex)
            {
                glFramebufferTextureLayer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
                                          depthTexture, 0, layerIndex);
                glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
            }
        }
        else
        {
            glTexImage3D(texTarget, 0, GL_DEPTH24_STENCIL8, viewWidth, height, numLayers, 0,
                         GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, textureData.data());
        }
    }
    glBindTexture(texTarget, 0);
    ASSERT_GL_NO_ERROR();

    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, restoreDrawFramebuffer);
}

void CreateMultiviewBackingTextures(int samples,
                                    int viewWidth,
                                    int height,
                                    int numLayers,
                                    GLuint colorTexture,
                                    GLuint depthTexture,
                                    GLuint depthStencilTexture)
{
    ASSERT_TRUE(colorTexture != 0u);
    std::vector<GLuint> colorTextures(1, colorTexture);
    CreateMultiviewBackingTextures(samples, viewWidth, height, numLayers, colorTextures,
                                   depthTexture, depthStencilTexture);
}

void AttachMultiviewTextures(GLenum target,
                             int viewWidth,
                             int numViews,
                             int baseViewIndex,
                             std::vector<GLuint> colorTextures,
                             GLuint depthTexture,
                             GLuint depthStencilTexture)
{
    ASSERT_TRUE(depthTexture == 0u || depthStencilTexture == 0u);
    for (size_t i = 0; i < colorTextures.size(); ++i)
    {
        GLenum attachment = static_cast<GLenum>(GL_COLOR_ATTACHMENT0 + i);
        glFramebufferTextureMultiviewOVR(target, attachment, colorTextures[i], 0, baseViewIndex,
                                         numViews);
    }
    if (depthTexture)
    {
        glFramebufferTextureMultiviewOVR(target, GL_DEPTH_ATTACHMENT, depthTexture, 0,
                                         baseViewIndex, numViews);
    }
    if (depthStencilTexture)
    {
        glFramebufferTextureMultiviewOVR(target, GL_DEPTH_STENCIL_ATTACHMENT, depthStencilTexture,
                                         0, baseViewIndex, numViews);
    }
}

void AttachMultiviewTextures(GLenum target,
                             int viewWidth,
                             int numViews,
                             int baseViewIndex,
                             GLuint colorTexture,
                             GLuint depthTexture,
                             GLuint depthStencilTexture)
{
    ASSERT_TRUE(colorTexture != 0u);
    std::vector<GLuint> colorTextures(1, colorTexture);
    AttachMultiviewTextures(target, viewWidth, numViews, baseViewIndex, colorTextures, depthTexture,
                            depthStencilTexture);
}

std::ostream &operator<<(std::ostream &os, const MultiviewImplementationParams &params)
{
    const PlatformParameters &base = static_cast<const PlatformParameters &>(params);
    os << base << "_";
    if (params.mForceUseGeometryShaderOnD3D)
    {
        os << "_force_geom_shader";
    }
    else
    {
        os << "_vertex_shader";
    }
    if (params.mMultiviewExtension)
    {
        os << "_multiview";
    }
    else
    {
        os << "_multiview2";
    }
    return os;
}

MultiviewImplementationParams VertexShaderOpenGL(GLint majorVersion,
                                                 GLint minorVersion,
                                                 ExtensionName multiviewExtension)
{
    return MultiviewImplementationParams(majorVersion, minorVersion, false, egl_platform::OPENGL(),
                                         multiviewExtension);
}

MultiviewImplementationParams VertexShaderD3D11(GLint majorVersion,
                                                GLint minorVersion,
                                                ExtensionName multiviewExtension)
{
    return MultiviewImplementationParams(majorVersion, minorVersion, false, egl_platform::D3D11(),
                                         multiviewExtension);
}

MultiviewImplementationParams GeomShaderD3D11(GLint majorVersion,
                                              GLint minorVersion,
                                              ExtensionName multiviewExtension)
{
    return MultiviewImplementationParams(majorVersion, minorVersion, true, egl_platform::D3D11(),
                                         multiviewExtension);
}

void MultiviewTest::overrideWorkaroundsD3D(FeaturesD3D *features)
{
    features->overrideFeatures({"select_view_in_geometry_shader"},
                               GetParam().mForceUseGeometryShaderOnD3D);
}

}  // namespace angle
kc3-lang/angle/src/tests/test_utils/MultiviewTest.cpp

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kc3-lang/angle /src/tests/test_utils/MultiviewTest.cpp
