commit 8b6394c24f755db39936e4e5111a3f251cc56857
author egdaniel <egdaniel@google.com> Fri Mar 04 07:35:10 2016 -0800
committer Commit bot <commit-bot@chromium.org> Fri Mar 04 07:35:10 2016 -0800
tree c9984ed5aae1a7a75fa2d3ec994e246ad2ecb944
parent d3312595c86289113ea5994234844388523499e8

Add a cache of GrVkSamplers in GrVkResourceProvider.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1765523002

Review URL: https://codereview.chromium.org/1765523002

src/gpu/vk/GrVkSampler.cpp

diff --git a/src/gpu/vk/GrVkSampler.cpp b/src/gpu/vk/GrVkSampler.cpp
index 4bba662..9938340 100644
--- a/src/gpu/vk/GrVkSampler.cpp
+++ b/src/gpu/vk/GrVkSampler.cpp
@@ -23,7 +23,7 @@
     return gWrapModes[tm];
 }
 
-GrVkSampler* GrVkSampler::Create(const GrVkGpu* gpu, const GrTextureAccess& textureAccess) {
+GrVkSampler* GrVkSampler::Create(const GrVkGpu* gpu, const GrTextureParams& params) {
 
     static VkFilter vkMinFilterModes[] = {
         VK_FILTER_NEAREST,
@@ -36,8 +36,6 @@
         VK_FILTER_LINEAR
     };
 
-    const GrTextureParams& params = textureAccess.getParams();
-
     VkSamplerCreateInfo createInfo;
     memset(&createInfo, 0, sizeof(VkSamplerCreateInfo));
     createInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
@@ -65,10 +63,24 @@
                                                           nullptr,
                                                           &sampler));
 
-    return new GrVkSampler(sampler);
+    return new GrVkSampler(sampler, GenerateKey(params));
 }
 
 void GrVkSampler::freeGPUData(const GrVkGpu* gpu) const {
     SkASSERT(fSampler);
     GR_VK_CALL(gpu->vkInterface(), DestroySampler(gpu->device(), fSampler, nullptr));
 }
+
+uint8_t GrVkSampler::GenerateKey(const GrTextureParams& params) {
+
+    uint8_t key = params.filterMode();
+    
+    SkASSERT(params.filterMode() <= 3);
+    key |= (params.getTileModeX() << 2);
+
+    GR_STATIC_ASSERT(SkShader::kTileModeCount <= 4);
+    key |= (params.getTileModeY() << 4);
+
+    return key;
+}
+