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[D3D12] Flip the viewport

This commit is contained in:
Triang3l 2018-08-01 13:12:06 +03:00
parent dea463f79b
commit 6d6e803c7d
1 changed files with 4 additions and 4 deletions
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8
src/xenia/gpu/d3d12/d3d12_command_processor.cc
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@ -738,8 +738,8 @@ void D3D12CommandProcessor::UpdateFixedFunctionState(
? regs[XE_GPU_REG_PA_CL_VPORT_XSCALE].f32
: 1280.0f;
float viewport_scale_y = (pa_cl_vte_cntl & (1 << 2))
? regs[XE_GPU_REG_PA_CL_VPORT_YSCALE].f32
: 1280.0f;
? -regs[XE_GPU_REG_PA_CL_VPORT_YSCALE].f32
: -1280.0f;
// TODO(Triang3l): Investigate how unnormalized coordinates should work when
// using a D24FS8 depth buffer. A 20e4 buffer can store values up to
// 511.99985, however, in the depth buffer, something like 1/z is stored, and
@ -910,10 +910,10 @@ void D3D12CommandProcessor::UpdateSystemConstantValues(Endian index_endian) {
if (pa_cl_vte_cntl & (1 << 2)) {
float viewport_scale_y = regs[XE_GPU_REG_PA_CL_VPORT_YSCALE].f32;
if (viewport_scale_y != 0.0f) {
ndc_offset_y -= 0.5f / viewport_scale_y;
ndc_offset_y += 0.5f / viewport_scale_y;
}
} else {
ndc_offset_y -= 1.0f / 2560.0f;
ndc_offset_y += 1.0f / 2560.0f;
}
pixel_half_pixel_offset = -0.5f;
}