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[D3D12] DXT5 decompression shader (not used yet)

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Triang3l
2018-09-22 15:52:07 +03:00
parent 4d1b3caf8c
commit bb24521c2b
15 changed files with 2967 additions and 881 deletions
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23
src/xenia/gpu/d3d12/shaders/texture_load_dxt1_rgba8.cs.hlsl
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@@ -1,12 +1,11 @@
#include "pixel_formats.hlsli"
#include "texture_copy.hlsli"
void XeDXT1FourTransBlocksRowToRGBA8(uint4 rgb_10b_low, uint4 rgb_10b_high,
uint4 weights, uint4 weights_shift,
out uint4 row_0, out uint4 row_1,
out uint4 row_2, out uint4 row_3) {
uint4 weights_shifts_low = weights_shift + uint4(0u, 2u, 4u, 6u);
uint4 weights_shifts_high = weights_shifts_low + 1u;
void XeDXT1FourTransBlocksRowToRGBA8(
uint4 rgb_10b_low, uint4 rgb_10b_high, uint4 weights, out uint4 row_0,
out uint4 row_1, out uint4 row_2, out uint4 row_3) {
const uint4 weights_shifts_low = uint4(0u, 2u, 4u, 6u);
const uint4 weights_shifts_high = uint4(1u, 3u, 5u, 7u);
// Whether the texel is (RGB0+RGB1)/2 - divide the weighted sum by 2 (shift
// right by 1) if it is.
uint4 weights_sums_log2 = weights & ((weights & 0xAAAAAAAAu) >> 1u);
@@ -92,17 +91,17 @@ void main(uint3 xe_thread_id : SV_DispatchThreadID) {
xe_texture_copy_host_pitch, 4u) + xe_texture_copy_host_base;
for (uint i = 0u; i < 4u; ++i) {
uint4 row_opaque_0, row_opaque_1, row_opaque_2, row_opaque_3;
XeDXTFourBlocksRowToRGB8(rgb_10b_low, rgb_10b_high, weights_opaque_high,
i * 8u, row_opaque_0, row_opaque_1, row_opaque_2,
row_opaque_3);
XeDXTFourBlocksRowToRGB8(rgb_10b_low, rgb_10b_high,
weights_opaque_high >> (i * 8u), row_opaque_0,
row_opaque_1, row_opaque_2, row_opaque_3);
row_opaque_0 |= 0xFF000000u;
row_opaque_1 |= 0xFF000000u;
row_opaque_2 |= 0xFF000000u;
row_opaque_3 |= 0xFF000000u;
uint4 row_trans_0, row_trans_1, row_trans_2, row_trans_3;
XeDXT1FourTransBlocksRowToRGBA8(rgb_10b_low, rgb_10b_high, weights_trans,
i * 8u, row_trans_0, row_trans_1,
row_trans_2, row_trans_3);
XeDXT1FourTransBlocksRowToRGBA8(rgb_10b_low, rgb_10b_high,
weights_trans >> (i * 8u), row_trans_0,
row_trans_1, row_trans_2, row_trans_3);
xe_texture_copy_dest.Store4(texel_offset_host,
is_trans.x ? row_trans_0 : row_opaque_0);
xe_texture_copy_dest.Store4(texel_offset_host + 16u,