Method ReflectBufferVariables

GTE/Graphics/GL46/GLSLReflection.cpp:853–972

}

void GLSLReflection::ReflectBufferVariables()
{
    GLint numResources = 0;
    glGetProgramInterfaceiv(mHandle, GL_BUFFER_VARIABLE, GL_ACTIVE_RESOURCES, &numResources);

    if (numResources > 0)
    {
        mBufferVariables.resize(numResources);

        enum
        {
            IDX_NAME_LENGTH,
            IDX_TYPE,
            IDX_ARRAY_SIZE,
            IDX_OFFSET,
            IDX_BLOCK_INDEX,
            IDX_ARRAY_STRIDE,
            IDX_MATRIX_STRIDE,
            IDX_IS_ROW_MAJOR,
            IDX_TOP_LEVEL_ARRAY_SIZE,
            IDX_TOP_LEVEL_ARRAY_STRIDE,
            IDX_REFERENCED_BY_VERTEX_SHADER,
            IDX_REFERENCED_BY_GEOMETRY_SHADER,
            IDX_REFERENCED_BY_FRAGMENT_SHADER,
            IDX_REFERENCED_BY_COMPUTE_SHADER,
            IDX_REFERENCED_BY_TESS_CONTROL_SHADER,
            IDX_REFERENCED_BY_TESS_EVALUATION_SHADER
        };

        std::vector<GLenum> const properties =
        {
            GL_NAME_LENGTH,
            GL_TYPE,
            GL_ARRAY_SIZE,
            GL_OFFSET,
            GL_BLOCK_INDEX,
            GL_ARRAY_STRIDE,
            GL_MATRIX_STRIDE,
            GL_IS_ROW_MAJOR,
            GL_TOP_LEVEL_ARRAY_SIZE,
            GL_TOP_LEVEL_ARRAY_STRIDE,
            GL_REFERENCED_BY_VERTEX_SHADER,
            GL_REFERENCED_BY_GEOMETRY_SHADER,
            GL_REFERENCED_BY_FRAGMENT_SHADER,
            GL_REFERENCED_BY_COMPUTE_SHADER,
            GL_REFERENCED_BY_TESS_CONTROL_SHADER,
            GL_REFERENCED_BY_TESS_EVALUATION_SHADER
        };

        GLsizei const numProperties = static_cast<GLsizei>(properties.size());

        std::vector<GLint> results(properties.size(), 0);
        for (int32_t i = 0; i < numResources; ++i)
        {
            glGetProgramResourceiv(mHandle, GL_BUFFER_VARIABLE, i, numProperties,
                properties.data(), numProperties, nullptr, results.data());

            GLsizei const numBytes = static_cast<GLsizei>(results[IDX_NAME_LENGTH] + 1);