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Implement Scissor Test

This commit is contained in:
FernandoS27 2018-10-08 21:21:22 -04:00
parent 30ff42b8cc
commit be97fc884d
1 changed files with 9 additions and 4 deletions
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13
src/video_core/renderer_opengl/gl_rasterizer.cpp
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@ -976,11 +976,16 @@ void RasterizerOpenGL::SyncAlphaTest() {
void RasterizerOpenGL::SyncScissorTest() {
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
// TODO(Rodrigo): Alpha testing is a legacy OpenGL feature, but it can be
// implemented with a test+discard in fragment shaders.
state.scissor.enabled = (regs.scissor_test.enable != 0);
// TODO(Blinkhawk): Figure if the hardware supports scissor testing per viewport and how it's
// implemented.
if (regs.scissor_test.enable != 0) {
LOG_CRITICAL(Render_OpenGL, "Scissor testing is not implemented");
UNREACHABLE();
const u32 width = regs.scissor_test.max_x - regs.scissor_test.min_x;
const u32 height = regs.scissor_test.max_y - regs.scissor_test.min_y;
state.scissor.x = regs.scissor_test.min_x;
state.scissor.y = regs.scissor_test.min_y;
state.scissor.width = width;
state.scissor.height = height;
}
}