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Fixing polygon mode.

This commit is contained in:
Ben Vanik 2015-02-13 11:28:06 -08:00
parent 6598556446
commit a5eacc2972
1 changed files with 19 additions and 9 deletions
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28
src/xenia/gpu/gl4/command_processor.cc
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@ -1828,21 +1828,31 @@ CommandProcessor::UpdateStatus CommandProcessor::UpdateRasterizerState() {
break;
}
if (regs.pa_su_sc_mode_cntl & (1 << 20)) {
glProvokingVertex(GL_LAST_VERTEX_CONVENTION);
} else {
glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
}
if (regs.pa_su_sc_mode_cntl & 0x4) {
glFrontFace(GL_CW);
} else {
glFrontFace(GL_CCW);
}
// TODO(benvanik): wireframe mode.
// glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
static const GLenum kFillModes[3] = {
GL_POINT, GL_LINE, GL_FILL,
};
bool poly_mode = ((regs.pa_su_sc_mode_cntl >> 3) & 0x3) != 0;
if (poly_mode) {
uint32_t front_poly_mode = (regs.pa_su_sc_mode_cntl >> 5) & 0x7;
uint32_t back_poly_mode = (regs.pa_su_sc_mode_cntl >> 8) & 0x7;
// GL only supports both matching.
assert_true(front_poly_mode == back_poly_mode);
glPolygonMode(GL_FRONT_AND_BACK, kFillModes[front_poly_mode]);
} else {
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
if (regs.pa_su_sc_mode_cntl & (1 << 20)) {
glProvokingVertex(GL_LAST_VERTEX_CONVENTION);
} else {
glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
}
return UpdateStatus::kMismatch;
}