Revert "Redefine the meaning of sample counts in GPU backend."
This reverts commit 48825b11ad25c98b9a4884d5cc0edd4e290c4409.
Reason for revert: nanobench
Original change's description:
> Redefine the meaning of sample counts in GPU backend.
>
> Old: 0 -> nonMSAA
> 1+ -> MSAA
>
> New:
> 0 -> error/unsupported
> 1 -> nonMSAA
> 2+ -> MSAA
>
> We still allow 0 to mean nonMSAA in three sets of public APIs for backwards compatibility:
>
> 1) SkSurface factories
> 2) GrBackendRenderTarget constructors
> 3) GrCaps::getSampleCnt()'s requestedCount parameter
>
> However, we immediately clamp to 1 and treat 0 as invalid/non-renderable internally.
>
> This also changes the behavior when using a large sample count. We now fail in that case rather than using the largest sample available sample count. GrCaps::getSampleCount() will return 0 in this case.
>
>
> Bug: skia:
> Change-Id: Ida22c6b22c1365e563c9046b611e88bf5eb3ff33
> Reviewed-on: https://skia-review.googlesource.com/101560
> Reviewed-by: Greg Daniel <egdaniel@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>
TBR=egdaniel@google.com,bsalomon@google.com
Change-Id: Ic257619a8a5ee9ac15419ecf10259e42daed7f82
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/102662
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/GrTexture.cpp b/src/gpu/GrTexture.cpp
index dd06317..b4cefb0 100644
--- a/src/gpu/GrTexture.cpp
+++ b/src/gpu/GrTexture.cpp
@@ -78,7 +78,7 @@
void GrTexture::computeScratchKey(GrScratchKey* key) const {
const GrRenderTarget* rt = this->asRenderTarget();
- int sampleCount = 1;
+ int sampleCount = 0;
if (rt) {
sampleCount = rt->numStencilSamples();
}
@@ -92,10 +92,8 @@
GrMipMapped mipMapped, GrScratchKey* key) {
static const GrScratchKey::ResourceType kType = GrScratchKey::GenerateResourceType();
uint32_t flags = isRenderTarget;
- SkASSERT(width > 0);
- SkASSERT(height > 0);
- SkASSERT(sampleCnt > 0);
- SkASSERT(1 == sampleCnt || isRenderTarget);
+
+ SkASSERT(0 == sampleCnt || isRenderTarget);
// make sure desc.fConfig fits in 5 bits
SkASSERT(sk_float_log2(kLast_GrPixelConfig) <= 5);