Add integer texture support.

This allows us to create integer textures and sample them from a GrProcessor's code.

Filtering is limited to NEAREST.

Adds tests for reading/writing pixels, copying, and drawing. These operations are not allowed to convert to fixed/float configs.

Vulkan support is TBD.


GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4348

Change-Id: If38d89a03285d4bd98d1f14f9638b0320977e43d
Reviewed-on: https://skia-review.googlesource.com/4348
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Chris Dalton <csmartdalton@google.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/src/gpu/GrTextureProvider.cpp b/src/gpu/GrTextureProvider.cpp
index dba24b5926..b49c2c96d6 100644
--- a/src/gpu/GrTextureProvider.cpp
+++ b/src/gpu/GrTextureProvider.cpp
@@ -48,7 +48,9 @@ GrTexture* GrTextureProvider::createMipMappedTexture(const GrSurfaceDesc& desc,
             return nullptr;
         }
     }
-
+    if (mipLevelCount > 1 && GrPixelConfigIsSint(desc.fConfig)) {
+        return nullptr;
+    }
     if ((desc.fFlags & kRenderTarget_GrSurfaceFlag) &&
         !fGpu->caps()->isConfigRenderable(desc.fConfig, desc.fSampleCnt > 0)) {
         return nullptr;
@@ -84,10 +86,10 @@ GrTexture* GrTextureProvider::createTexture(const GrSurfaceDesc& desc, SkBudgete
     GrMipLevel* texels = nullptr;
     int levelCount = 0;
     if (srcData) {
-      tempTexels.fPixels = srcData;
-      tempTexels.fRowBytes = rowBytes;
-      texels = &tempTexels;
-      levelCount = 1;
+        tempTexels.fPixels = srcData;
+        tempTexels.fRowBytes = rowBytes;
+        texels = &tempTexels;
+        levelCount = 1;
     }
     return this->createMipMappedTexture(desc, budgeted, texels, levelCount);
 }