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>
diff --git a/tests/ResourceCacheTest.cpp b/tests/ResourceCacheTest.cpp
index 34ed4f7..da2e278 100644
--- a/tests/ResourceCacheTest.cpp
+++ b/tests/ResourceCacheTest.cpp
@@ -129,21 +129,20 @@
GrResourceProvider* resourceProvider = context->contextPriv().resourceProvider();
- sk_sp<GrRenderTarget> smallRT0 = create_RT_with_SB(resourceProvider, 4, 0, SkBudgeted::kYes);
+ sk_sp<GrRenderTarget> smallRT0 = create_RT_with_SB(resourceProvider, 4, 1, SkBudgeted::kYes);
REPORTER_ASSERT(reporter, smallRT0);
{
// Two budgeted RTs with the same desc should share a stencil buffer.
- sk_sp<GrRenderTarget> smallRT1 = create_RT_with_SB(resourceProvider, 4, 0,
- SkBudgeted::kYes);
- REPORTER_ASSERT(reporter, smallRT1);
+ sk_sp<GrRenderTarget> smallRT1 = create_RT_with_SB(resourceProvider, 4, 1, SkBudgeted::kYes);
+ REPORTER_ASSERT(reporter, smallRT1);
- REPORTER_ASSERT(reporter, get_SB(smallRT0.get()) == get_SB(smallRT1.get()));
+ REPORTER_ASSERT(reporter, get_SB(smallRT0.get()) == get_SB(smallRT1.get()));
}
{
// An unbudgeted RT with the same desc should also share.
- sk_sp<GrRenderTarget> smallRT2 = create_RT_with_SB(resourceProvider, 4, 0, SkBudgeted::kNo);
+ sk_sp<GrRenderTarget> smallRT2 = create_RT_with_SB(resourceProvider, 4, 1, SkBudgeted::kNo);
REPORTER_ASSERT(reporter, smallRT2);
REPORTER_ASSERT(reporter, get_SB(smallRT0.get()) == get_SB(smallRT2.get()));
@@ -151,14 +150,14 @@
{
// An RT with a much larger size should not share.
- sk_sp<GrRenderTarget> bigRT = create_RT_with_SB(resourceProvider, 400, 0, SkBudgeted::kNo);
+ sk_sp<GrRenderTarget> bigRT = create_RT_with_SB(resourceProvider, 400, 1, SkBudgeted::kNo);
REPORTER_ASSERT(reporter, bigRT);
REPORTER_ASSERT(reporter, get_SB(smallRT0.get()) != get_SB(bigRT.get()));
}
- int smallSampleCount = context->caps()->getSampleCount(4, kRGBA_8888_GrPixelConfig);
- if (smallSampleCount > 0) {
+ int smallSampleCount = context->caps()->getSampleCount(2, kRGBA_8888_GrPixelConfig);
+ if (smallSampleCount > 1) {
// An RT with a different sample count should not share.
sk_sp<GrRenderTarget> smallMSAART0 = create_RT_with_SB(resourceProvider, 4,
smallSampleCount, SkBudgeted::kNo);
@@ -183,10 +182,10 @@
REPORTER_ASSERT(reporter, get_SB(smallMSAART0.get()) == get_SB(smallMSAART1.get()));
}
- // But not one with a larger sample count should not. (Also check that the request for 4
- // samples didn't get rounded up to >= 8 or else they could share.).
- int bigSampleCount = context->caps()->getSampleCount(8, kRGBA_8888_GrPixelConfig);
- if (bigSampleCount != smallSampleCount) {
+ // But one with a larger sample count should not. (Also check that the two requests didn't
+ // rounded up to the same actual sample count or else they could share.).
+ int bigSampleCount = context->caps()->getSampleCount(5, kRGBA_8888_GrPixelConfig);
+ if (bigSampleCount > 0 && bigSampleCount != smallSampleCount) {
sk_sp<GrRenderTarget> smallMSAART2 = create_RT_with_SB(resourceProvider, 4,
bigSampleCount,
SkBudgeted::kNo);
@@ -1707,7 +1706,7 @@
{
sk_sp<GrTexture> tex;
- tex = make_normal_texture(resourceProvider, kRenderTarget_GrSurfaceFlag, kSize, kSize, 0);
+ tex = make_normal_texture(resourceProvider, kRenderTarget_GrSurfaceFlag, kSize, kSize, 1);
size_t size = tex->gpuMemorySize();
REPORTER_ASSERT(reporter, kSize*kSize*4 == size);
@@ -1722,7 +1721,7 @@
kSize*kSize*4*(sampleCount+1) == size); // explicit resolve buffer
}
- tex = make_normal_texture(resourceProvider, kNone_GrSurfaceFlags, kSize, kSize, 0);
+ tex = make_normal_texture(resourceProvider, kNone_GrSurfaceFlags, kSize, kSize, 1);
size = tex->gpuMemorySize();
REPORTER_ASSERT(reporter, kSize*kSize*4 == size);
}
@@ -1732,7 +1731,7 @@
if (context->caps()->mipMapSupport()) {
sk_sp<GrTextureProxy> proxy;
- proxy = make_mipmap_proxy(proxyProvider, kRenderTarget_GrSurfaceFlag, kSize, kSize, 0);
+ proxy = make_mipmap_proxy(proxyProvider, kRenderTarget_GrSurfaceFlag, kSize, kSize, 1);
size_t size = proxy->gpuMemorySize();
REPORTER_ASSERT(reporter, kSize*kSize*4+(kSize*kSize*4)/3 == size);
@@ -1747,7 +1746,7 @@
kSize*kSize*4*(sampleCount+1)+(kSize*kSize*4)/3 == size); // explicit resolve buffer
}
- proxy = make_mipmap_proxy(proxyProvider, kNone_GrSurfaceFlags, kSize, kSize, 0);
+ proxy = make_mipmap_proxy(proxyProvider, kNone_GrSurfaceFlags, kSize, kSize, 1);
size = proxy->gpuMemorySize();
REPORTER_ASSERT(reporter, kSize*kSize*4+(kSize*kSize*4)/3 == size);
}