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[GPU] Move common-face polygon offset to draw_util

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Triang3l
2022-02-13 21:18:02 +03:00
parent 8d07c79897
commit 10ec47e1fe
3 changed files with 48 additions and 21 deletions
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30
src/xenia/gpu/draw_util.cc
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@@ -68,6 +68,36 @@ const int8_t kD3D10StandardSamplePositions2x[2][2] = {{4, 4}, {-4, -4}};
const int8_t kD3D10StandardSamplePositions4x[4][2] = {
{-2, -6}, {6, -2}, {-6, 2}, {2, 6}};
void GetPreferredFacePolygonOffset(const RegisterFile& regs,
bool primitive_polygonal, float& scale_out,
float& offset_out) {
float scale = 0.0f, offset = 0.0f;
auto pa_su_sc_mode_cntl = regs.Get<reg::PA_SU_SC_MODE_CNTL>();
if (primitive_polygonal) {
// Prefer the front polygon offset because in general, front faces are the
// ones that are rendered (except for shadow volumes).
if (pa_su_sc_mode_cntl.poly_offset_front_enable &&
!pa_su_sc_mode_cntl.cull_front) {
scale = regs[XE_GPU_REG_PA_SU_POLY_OFFSET_FRONT_SCALE].f32;
offset = regs[XE_GPU_REG_PA_SU_POLY_OFFSET_FRONT_OFFSET].f32;
}
if (pa_su_sc_mode_cntl.poly_offset_back_enable &&
!pa_su_sc_mode_cntl.cull_back && !scale && !offset) {
scale = regs[XE_GPU_REG_PA_SU_POLY_OFFSET_BACK_SCALE].f32;
offset = regs[XE_GPU_REG_PA_SU_POLY_OFFSET_BACK_OFFSET].f32;
}
} else {
// Non-triangle primitives use the front offset, but it's toggled via
// poly_offset_para_enable.
if (pa_su_sc_mode_cntl.poly_offset_para_enable) {
scale = regs[XE_GPU_REG_PA_SU_POLY_OFFSET_FRONT_SCALE].f32;
offset = regs[XE_GPU_REG_PA_SU_POLY_OFFSET_FRONT_OFFSET].f32;
}
}
scale_out = scale;
offset_out = offset;
}
bool IsPixelShaderNeededWithRasterization(const Shader& shader,
const RegisterFile& regs) {
assert_true(shader.type() == xenos::ShaderType::kPixel);