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fix(metal): clear only bound textures

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`clearQuad()` can be operating on framebuffers that don't have all the
color/depth/stencil buffers attached.

For example, if there is no stencil buffer in the framebuffer, the Metal
driver asserts with:

```
validateDepthStencilState: failed assertion `MTLDepthStencilDescriptor uses
frontFaceStencil but MTLRenderPassDescriptor has a nil stencilAttachment
texture'
```

Copy the logic from `setFrameBuffer()` to check which buffers we can clear.
Using this info set the pipeline state that is valid for currently bound
buffers.
This commit is contained in:
Blaž Tomažič 2024-05-22 12:30:01 +02:00 committed by Blaž Tomažič
parent 61c770b0f5
commit 628d98cbb7
1 changed files with 80 additions and 11 deletions
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69
src/renderer_mtl.mm
View File

@ -1712,11 +1712,79 @@ BX_STATIC_ASSERT(BX_COUNTOF(s_accessNames) == Access::Count, "Invalid s_accessNa
void clearQuad(ClearQuad& _clearQuad, const Rect& /*_rect*/, const Clear& _clear, const float _palette[][4])
{
bool clear_color;
bool clear_depth;
bool clear_stencil;
if (!isValid(m_fbh) || m_frameBuffers[m_fbh.idx].m_swapChain)
{
SwapChainMtl* swapChain =
!isValid(m_fbh) ?
m_mainFrameBuffer.m_swapChain :
m_frameBuffers[m_fbh.idx].m_swapChain;
if (NULL != swapChain->m_backBufferColorMsaa)
{
clear_color = swapChain->m_backBufferColorMsaa != NULL;
}
else
{
clear_color = (NULL != m_screenshotTarget ? m_screenshotTarget.m_obj : swapChain->currentDrawableTexture()) != NULL;
}
clear_depth = swapChain->m_backBufferDepth != NULL;
clear_stencil = swapChain->m_backBufferStencil != NULL;
}
else
{
FrameBufferMtl& frameBuffer = m_frameBuffers[m_fbh.idx];
clear_color = false;
for (uint32_t ii = 0; ii < frameBuffer.m_num; ++ii)
{
const TextureMtl& texture = m_textures[frameBuffer.m_colorHandle[ii].idx];
clear_color = (texture.m_ptrMsaa ? texture.m_ptrMsaa : texture.m_ptr) != NULL;
if (clear_color)
{
break;
}
}
if (isValid(frameBuffer.m_depthHandle))
{
const TextureMtl& texture = m_textures[frameBuffer.m_depthHandle.idx];
clear_depth = (texture.m_ptrMsaa ? texture.m_ptrMsaa : texture.m_ptr) != NULL;
clear_stencil = texture.m_ptrStencil != NULL;
if (texture.m_textureFormat == TextureFormat::D24S8)
{
if (texture.m_ptr.pixelFormat() == 255 /* Depth24Unorm_Stencil8 */
|| texture.m_ptr.pixelFormat() == 260 /* Depth32Float_Stencil8 */)
{
clear_stencil = clear_depth;
}
else
{
clear_stencil = (texture.m_ptrMsaa ? texture.m_ptrMsaa : texture.m_ptrStencil) != NULL;
}
}
}
else
{
clear_depth = false;
clear_stencil = false;
}
}
uint64_t state = 0;
if (clear_color) {
state |= _clear.m_flags & BGFX_CLEAR_COLOR ? BGFX_STATE_WRITE_RGB|BGFX_STATE_WRITE_A : 0;
}
if (clear_depth) {
state |= _clear.m_flags & BGFX_CLEAR_DEPTH ? BGFX_STATE_DEPTH_TEST_ALWAYS|BGFX_STATE_WRITE_Z : 0;
}
uint64_t stencil = 0;
if (clear_stencil) {
stencil |= _clear.m_flags & BGFX_CLEAR_STENCIL ? 0
| BGFX_STENCIL_TEST_ALWAYS
| BGFX_STENCIL_FUNC_REF(_clear.m_stencil)
@ -1726,6 +1794,7 @@ BX_STATIC_ASSERT(BX_COUNTOF(s_accessNames) == Access::Count, "Invalid s_accessNa
| BGFX_STENCIL_OP_PASS_Z_REPLACE
: 0
;
}
setDepthStencilState(state, stencil);