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[D3D12] Add a flag to toggle half pixel offset

This commit is contained in:
Triang3l 2018-08-26 23:50:38 +03:00
parent 660a606f5e
commit 1818905366
1 changed files with 6 additions and 1 deletions
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7
src/xenia/gpu/d3d12/d3d12_command_processor.cc
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@ -23,6 +23,11 @@
#include "xenia/gpu/xenos.h"
#include "xenia/ui/d3d12/d3d12_util.h"
// Some games (such as Banjo-Kazooie) are not aware of the half-pixel offset and
// may be blurry or have texture sampling artifacts, in this case the user may
// disable half-pixel offset by setting this to false.
DEFINE_bool(d3d12_half_pixel_offset, true,
"Enable half-pixel vertex and VPOS offset");
// Disabled because the current positions look worse than sampling at centers.
DEFINE_bool(d3d12_programmable_sample_positions, false,
"Enable custom SSAA sample positions where available");
@ -1366,7 +1371,7 @@ void D3D12CommandProcessor::UpdateSystemConstantValues(
float ndc_offset_y = (pa_cl_vte_cntl & (1 << 3)) ? 0.0f : 1.0f;
float ndc_offset_z = gl_clip_space_def ? 0.5f : 0.0f;
float pixel_half_pixel_offset = 0.0f;
if (!(pa_su_vtx_cntl & (1 << 0))) {
if (FLAGS_d3d12_half_pixel_offset && !(pa_su_vtx_cntl & (1 << 0))) {
// Signs are hopefully correct here, tested in GTA IV on both clearing
// (without a viewport) and drawing things near the edges of the screen.
if (pa_cl_vte_cntl & (1 << 0)) {