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Rasterizer: Implemented instanced rendering.

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We keep track of the current instance and update an uniform in the shaders to let them know which instance they are.

Instanced vertex arrays are not yet implemented.
This commit is contained in:
Subv
2018-08-11 19:21:31 -05:00
parent 3aad82b1a3
commit c5284efd4f
7 changed files with 28 additions and 5 deletions
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12
src/video_core/engines/maxwell_3d.cpp
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@ -222,6 +222,18 @@ void Maxwell3D::DrawArrays() {
debug_context->OnEvent(Tegra::DebugContext::Event::FinishedPrimitiveBatch, nullptr);
}
// Both instance configuration registers can not be set at the same time.
ASSERT_MSG(!regs.draw.instance_next || !regs.draw.instance_cont,
"Illegal combination of instancing parameters");
if (regs.draw.instance_next) {
// Increment the current instance *before* drawing.
state.current_instance += 1;
} else if (!regs.draw.instance_cont) {
// Reset the current instance to 0.
state.current_instance = 0;
}
const bool is_indexed{regs.index_array.count && !regs.vertex_buffer.count};
rasterizer.AccelerateDrawBatch(is_indexed);