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[Fix] (MG_Backend/DirectVulkan): clear alpha as 1.0f when using RGB format on GL side. Transition to VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL for clearing

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This commit is contained in:
swung0x48
2026-05-24 19:23:36 +08:00
parent c7d385c03d
commit 59733a2a26
1 changed files with 12 additions and 3 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
+12 -3
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@@ -80,6 +80,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
}
}
static Float ResolveColorClearAlpha(const MG_State::GLState::ITextureObject* texture, Float requestedAlpha) {
if (texture != nullptr && MG_Util::GetBaseInternalFormatComponentCount(texture->GetFormat()) == 3) {
return 1.0f;
}
return requestedAlpha;
}
enum class NumericDomain {
Unknown,
FloatLike,
@@ -2701,6 +2708,7 @@ void main() {
VkAccessFlags srcAccessMask = 0;
GetImageTransitionSourceState(resource->layout, srcStageMask, srcAccessMask);
VkImageLayout clearLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
Bool ok = VkTextureManager::TransitionImageLayout(
commandBuffer, resource->image, resource->layout, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
srcStageMask, VK_PIPELINE_STAGE_TRANSFER_BIT, srcAccessMask, VK_ACCESS_TRANSFER_WRITE_BIT,
@@ -2722,7 +2730,7 @@ void main() {
clearValue.float32[0] = clearPayload.color.x();
clearValue.float32[1] = clearPayload.color.y();
clearValue.float32[2] = clearPayload.color.z();
clearValue.float32[3] = clearPayload.color.w();
clearValue.float32[3] = ResolveColorClearAlpha(&texture, clearPayload.color.w());
vkCmdClearColorImage(commandBuffer, resource->image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
&clearValue, 1, &subresourceRange);
} else {
@@ -2748,12 +2756,13 @@ void main() {
}
ok = VkTextureManager::TransitionImageLayout(
commandBuffer, resource->image, resource->layout, sampledLayout,
commandBuffer, resource->image, clearLayout, sampledLayout,
VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT,
VK_ACCESS_TRANSFER_WRITE_BIT, VK_ACCESS_SHADER_READ_BIT, resource->aspect, 0, resource->mipLevels);
MOBILEGL_ASSERT(ok,
"MaterializePendingClearForTexture: failed to transition textureId=%d to sampled layout",
texture.GetExternalIndex());
resource->layout = sampledLayout;
m_clearManager->PopPendingClear(&texture);
MGLOG_D("MaterializePendingClearForTexture: textureId=%d pending clear materialized",
@@ -4324,7 +4333,7 @@ void main() {
clearPayload.color.x(),
clearPayload.color.y(),
clearPayload.color.z(),
clearPayload.color.w()
ResolveColorClearAlpha(pending.texture, clearPayload.color.w())
};
} else {
if ((clearPayload.mask & GL_DEPTH_BUFFER_BIT) != 0) {