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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 e8fe32f9d5
commit 1162a49920
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);