| |
| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "gm.h" |
| #include "GrContext.h" |
| #include "SkColorPriv.h" |
| #include "SkDevice.h" |
| |
| namespace skiagm { |
| |
| extern GrContext* GetGr(); |
| |
| static const int S = 200; |
| |
| class TexDataGM : public GM { |
| public: |
| TexDataGM() { |
| this->setBGColor(0xff000000); |
| } |
| |
| protected: |
| virtual SkString onShortName() { |
| return SkString("texdata"); |
| } |
| |
| virtual SkISize onISize() { |
| return make_isize(2*S, 2*S); |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| SkDevice* device = canvas->getDevice(); |
| GrRenderTarget* target = (GrRenderTarget*) device->accessRenderTarget(); |
| GrContext* ctx = GetGr(); |
| if (ctx && target) { |
| SkPMColor gTextureData[(2 * S) * (2 * S)]; |
| static const int stride = 2 * S; |
| static const SkPMColor gray = SkPackARGB32(0x40, 0x40, 0x40, 0x40); |
| static const SkPMColor white = SkPackARGB32(0xff, 0xff, 0xff, 0xff); |
| static const SkPMColor red = SkPackARGB32(0x80, 0x80, 0x00, 0x00); |
| static const SkPMColor blue = SkPackARGB32(0x80, 0x00, 0x00, 0x80); |
| static const SkPMColor green = SkPackARGB32(0x80, 0x00, 0x80, 0x00); |
| static const SkPMColor black = SkPackARGB32(0x00, 0x00, 0x00, 0x00); |
| for (int i = 0; i < 2; ++i) { |
| int offset = 0; |
| // fill upper-left |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = gray; |
| } |
| } |
| // fill upper-right |
| offset = S; |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = white; |
| } |
| } |
| // fill lower left |
| offset = S * stride; |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = black; |
| } |
| } |
| // fill lower right |
| offset = S * stride + S; |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = gray; |
| } |
| } |
| |
| GrTextureDesc desc; |
| desc.fAALevel = kNone_GrAALevel; |
| // use RT flag bit because in GL it makes the texture be bottom-up |
| desc.fFlags = i ? kRenderTarget_GrTextureFlagBit : |
| kNone_GrTextureFlags; |
| desc.fFormat = kRGBA_8888_GrPixelConfig; |
| desc.fWidth = 2 * S; |
| desc.fHeight = 2 * S; |
| GrTexture* texture = |
| ctx->createUncachedTexture(desc, gTextureData, 0); |
| |
| if (!texture) { |
| return; |
| } |
| GrAutoUnref au(texture); |
| |
| ctx->setClip(GrRect::MakeWH(2*S, 2*S)); |
| ctx->setRenderTarget(target); |
| |
| GrPaint paint; |
| paint.reset(); |
| paint.fColor = 0xffffffff; |
| paint.fSrcBlendCoeff = kOne_BlendCoeff; |
| paint.fDstBlendCoeff = kISA_BlendCoeff; |
| GrMatrix vm; |
| if (i) { |
| vm.setRotate(90 * SK_Scalar1, |
| S * SK_Scalar1, |
| S * SK_Scalar1); |
| } else { |
| vm.reset(); |
| } |
| ctx->setMatrix(vm); |
| GrMatrix tm; |
| tm = vm; |
| tm.postIDiv(2*S, 2*S); |
| paint.getTextureSampler(0)->setMatrix(tm); |
| paint.setTexture(0, texture); |
| |
| ctx->drawRect(paint, GrRect::MakeWH(2*S, 2*S)); |
| |
| // now update the lower right of the texture in first pass |
| // or upper right in second pass |
| offset = 0; |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = |
| ((x + y) % 2) ? (i ? green : red) : blue; |
| } |
| } |
| // BUG: uploadTextureData doesn't force a flush |
| ctx->flush(); |
| texture->uploadTextureData(S, i ? 0 : S, S, S, gTextureData, 4 * stride); |
| ctx->drawRect(paint, GrRect::MakeWH(2*S, 2*S)); |
| } |
| } |
| } |
| |
| private: |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static GM* MyFactory(void*) { return new TexDataGM; } |
| static GMRegistry reg(MyFactory); |
| |
| } |
| |