gl_graphics_pipeline: GLASM: Fix transform feedback with multiple buffers
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@ -559,15 +559,13 @@ void GraphicsPipeline::ConfigureImpl(bool is_indexed) {
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}
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void GraphicsPipeline::ConfigureTransformFeedbackImpl() const {
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glTransformFeedbackStreamAttribsNV(num_xfb_attribs, xfb_attribs.data(), num_xfb_strides,
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xfb_streams.data(), GL_INTERLEAVED_ATTRIBS);
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glTransformFeedbackAttribsNV(num_xfb_attribs, xfb_attribs.data(), GL_SEPARATE_ATTRIBS);
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}
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void GraphicsPipeline::GenerateTransformFeedbackState() {
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// TODO(Rodrigo): Inject SKIP_COMPONENTS*_NV when required. An unimplemented message will signal
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// when this is required.
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GLint* cursor{xfb_attribs.data()};
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GLint* current_stream{xfb_streams.data()};
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for (size_t feedback = 0; feedback < Maxwell::NumTransformFeedbackBuffers; ++feedback) {
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const auto& layout = key.xfb_state.layouts[feedback];
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@ -575,15 +573,6 @@ void GraphicsPipeline::GenerateTransformFeedbackState() {
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if (layout.varying_count == 0) {
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continue;
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}
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*current_stream = static_cast<GLint>(feedback);
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if (current_stream != xfb_streams.data()) {
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// When stepping one stream, push the expected token
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cursor[0] = GL_NEXT_BUFFER_NV;
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cursor[1] = 0;
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cursor[2] = 0;
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cursor += XFB_ENTRY_STRIDE;
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}
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++current_stream;
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const auto& locations = key.xfb_state.varyings[feedback];
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std::optional<u32> current_index;
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@ -619,7 +608,6 @@ void GraphicsPipeline::GenerateTransformFeedbackState() {
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}
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}
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num_xfb_attribs = static_cast<GLsizei>((cursor - xfb_attribs.data()) / XFB_ENTRY_STRIDE);
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num_xfb_strides = static_cast<GLsizei>(current_stream - xfb_streams.data());
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}
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void GraphicsPipeline::WaitForBuild() {
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@ -154,9 +154,7 @@ private:
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static constexpr std::size_t XFB_ENTRY_STRIDE = 3;
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GLsizei num_xfb_attribs{};
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GLsizei num_xfb_strides{};
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std::array<GLint, 128 * XFB_ENTRY_STRIDE * Maxwell::NumTransformFeedbackBuffers> xfb_attribs{};
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std::array<GLint, Maxwell::NumTransformFeedbackBuffers> xfb_streams{};
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std::mutex built_mutex;
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std::condition_variable built_condvar;
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