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render: declare copy-source usage on the readback source textures

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This commit is contained in:
mchughalex 2026-07-24 21:49:05 +01:00
parent d1a3e3d255
commit f6e0ae87fd
2 changed files with 11 additions and 1 deletions
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6
src/skate3_native_scene_gpu.cpp
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@ -3634,6 +3634,12 @@ bool EnsureShadowResources(const NativeGuestOutputRenderContext& context) {
nrhi::TextureView** views[3] = {&g_r.shadow_srv_raw, &g_r.shadow_srv_mid,
&g_r.shadow_srv_final};
for (int t = 0; t < 3; ++t) {
// The raw and final tiles are the shadow-dump readback sources, so
// those two also need copy-source usage; the intermediate is never
// copied and stays render-target only.
desc.usage = nrhi::kTextureUsageRenderTarget |
(t != 1 ? nrhi::kTextureUsageCopySource
: nrhi::kTextureUsageNone);
*targets[t] = device->CreateTexture(desc);
if (*targets[t] == nullptr) {
REXLOG_ERROR("native-scene: shadow atlas creation failed");

6
src/skate3_native_scene_post.cpp
View file

@ -488,7 +488,11 @@ bool ApplySsaoPass(const NativeGuestOutputRenderContext& context,
td.height = RendererState::kOcclGridH;
td.mip_levels = 1;
td.format = nrhi::Format::kR32_FLOAT;
td.usage = nrhi::kTextureUsageRenderTarget;
// The grid is read back to the CPU every frame, so it must declare
// copy-source usage: the Vulkan backend only requests TRANSFER_SRC for
// textures that ask for it, and both the transition to the copy-source
// state and the copy itself are invalid without it.
td.usage = nrhi::kTextureUsageRenderTarget | nrhi::kTextureUsageCopySource;
td.initial_state = nrhi::ResourceState::kRenderTarget;
g_r.occl_tex = device->CreateTexture(td);
nrhi::BufferDesc bd;