2f6bb6b852
I have been hacking at this test trying to understand why the N5 is still sometimes crashy (it seems, less but not zero now). No luck so far. But, while I've been reading and hacking at it, I think I've made a few small improvements, mostly to readability. BUG=skia: Review URL: https://codereview.chromium.org/870803002
123 lines
4.5 KiB
C++
123 lines
4.5 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/*
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* This is a straightforward test of floating point textures, which are
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* supported on some platforms. As of right now, this test only supports
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* 32 bit floating point textures, and indeed floating point test values
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* have been selected to require 32 bits of precision and full IEEE conformance
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*/
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#if SK_SUPPORT_GPU
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#include <float.h>
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#include "Test.h"
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#include "GrContext.h"
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#include "GrTexture.h"
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#include "GrContextFactory.h"
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#include "SkGpuDevice.h"
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#include "SkHalf.h"
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static const int DEV_W = 100, DEV_H = 100;
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static const int FP_CONTROL_ARRAY_SIZE = DEV_W * DEV_H * 4/*RGBA*/;
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static const float kMaxIntegerRepresentableInSPFloatingPoint = 16777216; // 2 ^ 24
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static const SkIRect DEV_RECT = SkIRect::MakeWH(DEV_W, DEV_H);
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DEF_GPUTEST(FloatingPointTextureTest, reporter, factory) {
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SkTDArray<float> controlPixelData, readBuffer;
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controlPixelData.setCount(FP_CONTROL_ARRAY_SIZE);
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readBuffer.setCount(FP_CONTROL_ARRAY_SIZE);
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for (int i = 0; i < FP_CONTROL_ARRAY_SIZE; i += 4) {
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controlPixelData[i + 0] = FLT_MIN;
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controlPixelData[i + 1] = FLT_MAX;
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controlPixelData[i + 2] = FLT_EPSILON;
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controlPixelData[i + 3] = kMaxIntegerRepresentableInSPFloatingPoint;
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}
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for (int origin = 0; origin < 2; ++origin) {
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for (int glCtxType = 0; glCtxType < GrContextFactory::kGLContextTypeCnt; ++glCtxType) {
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GrSurfaceDesc desc;
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desc.fFlags = kRenderTarget_GrSurfaceFlag;
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desc.fWidth = DEV_W;
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desc.fHeight = DEV_H;
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desc.fConfig = kRGBA_float_GrPixelConfig;
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desc.fOrigin = 0 == origin ?
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kTopLeft_GrSurfaceOrigin : kBottomLeft_GrSurfaceOrigin;
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GrContextFactory::GLContextType type =
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static_cast<GrContextFactory::GLContextType>(glCtxType);
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if (!GrContextFactory::IsRenderingGLContext(type)) {
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continue;
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}
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GrContext* context = factory->get(type);
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if (NULL == context){
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continue;
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}
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SkAutoTUnref<GrTexture> fpTexture(
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context->createUncachedTexture(desc, controlPixelData.begin(), 0));
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// Floating point textures are NOT supported everywhere
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if (NULL == fpTexture) {
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continue;
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}
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fpTexture->readPixels(0, 0, DEV_W, DEV_H, desc.fConfig, readBuffer.begin(), 0);
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REPORTER_ASSERT(reporter,
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0 == memcmp(readBuffer.begin(), controlPixelData.begin(), readBuffer.bytes()));
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}
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}
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}
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static const int HALF_CONTROL_ARRAY_SIZE = DEV_W * DEV_H * 1 /*alpha-only*/;
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DEF_GPUTEST(HalfFloatTextureTest, reporter, factory) {
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SkTDArray<SkHalf> controlPixelData, readBuffer;
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controlPixelData.setCount(HALF_CONTROL_ARRAY_SIZE);
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readBuffer.setCount(HALF_CONTROL_ARRAY_SIZE);
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for (int i = 0; i < HALF_CONTROL_ARRAY_SIZE; i += 4) {
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controlPixelData[i + 0] = SK_HalfMin;
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controlPixelData[i + 1] = SK_HalfMax;
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controlPixelData[i + 2] = SK_HalfEpsilon;
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controlPixelData[i + 3] = 0x6800; // 2^11
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}
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for (int origin = 0; origin < 2; ++origin) {
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for (int glCtxType = 0; glCtxType < GrContextFactory::kGLContextTypeCnt; ++glCtxType) {
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GrSurfaceDesc desc;
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desc.fFlags = kRenderTarget_GrSurfaceFlag;
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desc.fWidth = DEV_W;
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desc.fHeight = DEV_H;
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desc.fConfig = kAlpha_half_GrPixelConfig;
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desc.fOrigin = 0 == origin ?
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kTopLeft_GrSurfaceOrigin : kBottomLeft_GrSurfaceOrigin;
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GrContextFactory::GLContextType type =
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static_cast<GrContextFactory::GLContextType>(glCtxType);
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if (!GrContextFactory::IsRenderingGLContext(type)) {
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continue;
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}
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GrContext* context = factory->get(type);
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if (NULL == context){
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continue;
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}
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SkAutoTUnref<GrTexture> fpTexture(
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context->createUncachedTexture(desc, controlPixelData.begin(), 0));
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// 16-bit floating point textures are NOT supported everywhere
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if (NULL == fpTexture) {
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continue;
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}
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fpTexture->readPixels(0, 0, DEV_W, DEV_H, desc.fConfig, readBuffer.begin(), 0);
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REPORTER_ASSERT(reporter,
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0 == memcmp(readBuffer.begin(), controlPixelData.begin(), readBuffer.bytes()));
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}
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}
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}
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#endif
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