Merge pull request #3996 from ReinUsesLisp/front-faces

fixed_pipeline_state,gl_rasterizer: Swap negative viewport checks for front faces
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bunnei 2020-06-01 14:04:35 -04:00 committed by GitHub
commit 6c0b1a9ee2
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2 changed files with 21 additions and 7 deletions

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@ -1020,6 +1020,26 @@ void RasterizerOpenGL::SyncViewport() {
const auto& regs = gpu.regs; const auto& regs = gpu.regs;
const bool dirty_viewport = flags[Dirty::Viewports]; const bool dirty_viewport = flags[Dirty::Viewports];
const bool dirty_clip_control = flags[Dirty::ClipControl];
if (dirty_clip_control || flags[Dirty::FrontFace]) {
flags[Dirty::FrontFace] = false;
GLenum mode = MaxwellToGL::FrontFace(regs.front_face);
if (regs.screen_y_control.triangle_rast_flip != 0 &&
regs.viewport_transform[0].scale_y < 0.0f) {
switch (mode) {
case GL_CW:
mode = GL_CCW;
break;
case GL_CCW:
mode = GL_CW;
break;
}
}
glFrontFace(mode);
}
if (dirty_viewport || flags[Dirty::ClipControl]) { if (dirty_viewport || flags[Dirty::ClipControl]) {
flags[Dirty::ClipControl] = false; flags[Dirty::ClipControl] = false;
@ -1117,11 +1137,6 @@ void RasterizerOpenGL::SyncCullMode() {
glDisable(GL_CULL_FACE); glDisable(GL_CULL_FACE);
} }
} }
if (flags[Dirty::FrontFace]) {
flags[Dirty::FrontFace] = false;
glFrontFace(MaxwellToGL::FrontFace(regs.front_face));
}
} }
void RasterizerOpenGL::SyncPrimitiveRestart() { void RasterizerOpenGL::SyncPrimitiveRestart() {

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@ -71,8 +71,7 @@ void FixedPipelineState::Rasterizer::Fill(const Maxwell& regs) noexcept {
const u32 topology_index = static_cast<u32>(regs.draw.topology.Value()); const u32 topology_index = static_cast<u32>(regs.draw.topology.Value());
u32 packed_front_face = PackFrontFace(regs.front_face); u32 packed_front_face = PackFrontFace(regs.front_face);
if (regs.screen_y_control.triangle_rast_flip != 0 && if (regs.screen_y_control.triangle_rast_flip != 0) {
regs.viewport_transform[0].scale_y > 0.0f) {
// Flip front face // Flip front face
packed_front_face = 1 - packed_front_face; packed_front_face = 1 - packed_front_face;
} }