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store emittance flood texture as r16g16

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This commit is contained in:
jacob 2025-07-17 19:57:08 -05:00
parent fd0501c700
commit 210242b6d6
3 changed files with 11 additions and 13 deletions
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13
res/sh/flood.hlsl
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@ -19,7 +19,7 @@
ConstantBuffer<struct sh_flood_constants> g_constants : register(b0);
Texture2D<float4> g_emittance_textures[] : register(t0, space0);
RWTexture2D<uint> g_flood_textures[]: register(u0, space1);
RWTexture2D<uint2> g_flood_textures[]: register(u0, space1);
SamplerState g_sampler : register(s0);
@ -44,9 +44,9 @@ SH_ENTRY(ROOTSIG) void cs(struct cs_input input)
if (step_len == -1) {
/* Seed */
float4 emittance = g_emittance_textures[g_constants.emittance_tex_urid][id];
uint seed = 0xFFFFFFFF;
uint2 seed = uint2(0xFFFF, 0xFFFF);
if (emittance.a > 0) {
seed = (id.x << 16) | id.y;
seed = id;
}
g_flood_textures[g_constants.write_flood_tex_urid][id] = seed;
} else {
@ -62,14 +62,13 @@ SH_ENTRY(ROOTSIG) void cs(struct cs_input input)
(int2)id + int2(0 , +step_len), /* bottom center */
(int2)id + int2(+step_len, +step_len) /* bottom right */
};
uint closest_seed = 0xFFFFFFFF;
uint2 closest_seed = uint2(0xFFFF, 0xFFFF);
uint closest_seed_len_sq = 0xFFFFFFFF;
for (int i = 0; i < 9; ++i) {
int2 coord = read_coords[i];
if (coord.x >= 0 && coord.x < (int)tex_size.x && coord.y >= 0 && coord.y < (int)tex_size.y) {
uint seed = g_flood_textures[g_constants.read_flood_tex_urid][coord];
int2 seed_coord = int2((seed >> 16) & 0xFFFF, seed & 0xFFFF);
int2 dist_vec = (int2)id - seed_coord;
uint2 seed = g_flood_textures[g_constants.read_flood_tex_urid][coord];
int2 dist_vec = (int2)id - (int2)seed;
uint dist_len_sq = dot(dist_vec, dist_vec);
if (dist_len_sq < closest_seed_len_sq) {
closest_seed = seed;

7
res/sh/shade.hlsl
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@ -20,7 +20,7 @@
ConstantBuffer<struct sh_shade_constants> g_constants : register(b0);
Texture2D<float4> g_gbuff_textures[] : register(t0, space0);
Texture2D<uint> g_emittance_flood_textures[] : register(t0, space1);
Texture2D<uint2> g_emittance_flood_textures[] : register(t0, space1);
RWTexture2D<float4> g_write_textures[]: register(u0, space2);
SamplerState g_sampler : register(s0);
@ -44,9 +44,8 @@ SH_ENTRY(ROOTSIG) void cs(struct cs_input input)
float4 albedo = g_gbuff_textures[g_constants.albedo_tex_urid][id];
float4 emittance = g_gbuff_textures[g_constants.emittance_tex_urid][id];
uint emittance_flood_packed = g_emittance_flood_textures[g_constants.emittance_flood_tex_urid][id];
uint2 emittance_flood = uint2(emittance_flood_packed >> 16, emittance_flood_packed & 0xFFFF);
emittance_flood *= emittance_flood_packed < 0xFFFFFFFF;
uint2 emittance_flood = g_emittance_flood_textures[g_constants.emittance_flood_tex_urid][id];
emittance_flood *= (emittance_flood.x < 0xFFFF && emittance_flood.y < 0xFFFF);
float4 final_color = old_color + albedo + float4(float(emittance_flood.x) / float(g_constants.tex_width), float(emittance_flood.y) / float(g_constants.tex_height), 0, 1);

4
src/gp_dx12.c
View File

@ -2672,8 +2672,8 @@ void gp_run(struct gp_run_params params)
/* Alloc buffers */
sig->albedo = gbuff_alloc(DXGI_FORMAT_R8G8B8A8_UNORM, final_target_size, D3D12_RESOURCE_STATE_RENDER_TARGET);
sig->emittance = gbuff_alloc(DXGI_FORMAT_R8G8B8A8_UNORM, final_target_size, D3D12_RESOURCE_STATE_RENDER_TARGET);
sig->emittance_flood_a = gbuff_alloc(DXGI_FORMAT_R32_UINT, final_target_size, D3D12_RESOURCE_STATE_UNORDERED_ACCESS);
sig->emittance_flood_b = gbuff_alloc(DXGI_FORMAT_R32_UINT, final_target_size, D3D12_RESOURCE_STATE_UNORDERED_ACCESS);
sig->emittance_flood_a = gbuff_alloc(DXGI_FORMAT_R16G16_UINT, final_target_size, D3D12_RESOURCE_STATE_UNORDERED_ACCESS);
sig->emittance_flood_b = gbuff_alloc(DXGI_FORMAT_R16G16_UINT, final_target_size, D3D12_RESOURCE_STATE_UNORDERED_ACCESS);
}
struct sprite_scope *sprite_scope = sprite_scope_begin();