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fix(win/video): don't offload chroma subsampling math to texture sampler when downscaling (#3014)

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* Don't use sampler math for chroma if downscaling

* Correct portrait rotation offsets
This commit is contained in:
ns6089
2024-09-03 03:02:05 +03:00
committed by GitHub
parent 9d7e90ec2e
commit 7ce8547d6e
13 changed files with 177 additions and 93 deletions
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23
src_assets/windows/assets/shaders/directx/include/base_vs.hlsl
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@@ -1,12 +1,6 @@
#include "include/base_vs_types.hlsl"
#if defined(LEFT_SUBSAMPLING)
vertex_t generate_fullscreen_triangle_vertex(uint vertex_id, float subsample_offset, int rotate_texture_steps)
#elif defined(TOPLEFT_SUBSAMPLING)
vertex_t generate_fullscreen_triangle_vertex(uint vertex_id, float2 subsample_offset, int rotate_texture_steps)
#else
vertex_t generate_fullscreen_triangle_vertex(uint vertex_id, int rotate_texture_steps)
#endif
{
vertex_t output;
float2 tex_coord;
@@ -30,11 +24,24 @@ vertex_t generate_fullscreen_triangle_vertex(uint vertex_id, int rotate_texture_
sin(rotation_radians), cos(rotation_radians) };
float2 rotation_center = { 0.5, 0.5 };
tex_coord = round(rotation_center + mul(rotation_matrix, tex_coord - rotation_center));
if (rotate_texture_steps % 2) {
subsample_offset.xy = subsample_offset.yx;
}
}
#if defined(LEFT_SUBSAMPLING)
output.tex_right_left_center = float3(tex_coord.x, tex_coord.x - subsample_offset, tex_coord.y);
#elif defined (TOPLEFT_SUBSAMPLING)
output.tex_right_left_center = float3(tex_coord.x, tex_coord.x - subsample_offset.x, tex_coord.y);
#elif defined(LEFT_SUBSAMPLING_SCALE)
float2 halfsample_offset = subsample_offset / 2;
float3 right_center_left = float3(tex_coord.x + halfsample_offset.x,
tex_coord.x - halfsample_offset.x,
tex_coord.x - 3 * halfsample_offset.x);
float2 top_bottom = float2(tex_coord.y - halfsample_offset.y,
tex_coord.y + halfsample_offset.y);
output.tex_right_center_left_top = float4(right_center_left, top_bottom.x);
output.tex_right_center_left_bottom = float4(right_center_left, top_bottom.y);
#elif defined(TOPLEFT_SUBSAMPLING)
output.tex_right_left_top = float3(tex_coord.x, tex_coord.x - subsample_offset.x, tex_coord.y - subsample_offset.y);
output.tex_right_left_bottom = float3(tex_coord.x, tex_coord.x - subsample_offset.x, tex_coord.y);
#else