120 lines
4.5 KiB
C++
120 lines
4.5 KiB
C++
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/*
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* Copyright 2011 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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// This test only works with the GPU backend.
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#include "gm.h"
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#if SK_SUPPORT_GPU
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#include "GrContext.h"
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#include "GrDrawContext.h"
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#include "SkColorPriv.h"
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#include "effects/GrPorterDuffXferProcessor.h"
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#include "effects/GrSimpleTextureEffect.h"
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static const int S = 200;
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DEF_SIMPLE_GM_BG(texdata, canvas, 2 * S, 2 * S, SK_ColorBLACK) {
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GrRenderTarget* target = canvas->internal_private_accessTopLayerRenderTarget();
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GrContext* ctx = canvas->getGrContext();
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SkAutoTUnref<GrDrawContext> drawContext(ctx ? ctx->drawContext(target) : nullptr);
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if (drawContext && target) {
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SkAutoTArray<SkPMColor> gTextureData((2 * S) * (2 * S));
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static const int stride = 2 * S;
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static const SkPMColor gray = SkPackARGB32(0x40, 0x40, 0x40, 0x40);
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static const SkPMColor white = SkPackARGB32(0xff, 0xff, 0xff, 0xff);
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static const SkPMColor red = SkPackARGB32(0x80, 0x80, 0x00, 0x00);
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static const SkPMColor blue = SkPackARGB32(0x80, 0x00, 0x00, 0x80);
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static const SkPMColor green = SkPackARGB32(0x80, 0x00, 0x80, 0x00);
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static const SkPMColor black = SkPackARGB32(0x00, 0x00, 0x00, 0x00);
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for (int i = 0; i < 2; ++i) {
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int offset = 0;
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// fill upper-left
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for (int y = 0; y < S; ++y) {
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for (int x = 0; x < S; ++x) {
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gTextureData[offset + y * stride + x] = gray;
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}
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}
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// fill upper-right
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offset = S;
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for (int y = 0; y < S; ++y) {
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for (int x = 0; x < S; ++x) {
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gTextureData[offset + y * stride + x] = white;
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}
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}
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// fill lower left
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offset = S * stride;
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for (int y = 0; y < S; ++y) {
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for (int x = 0; x < S; ++x) {
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gTextureData[offset + y * stride + x] = black;
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}
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}
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// fill lower right
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offset = S * stride + S;
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for (int y = 0; y < S; ++y) {
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for (int x = 0; x < S; ++x) {
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gTextureData[offset + y * stride + x] = gray;
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}
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}
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GrSurfaceDesc desc;
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// use RT flag bit because in GL it makes the texture be bottom-up
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desc.fFlags = i ? kRenderTarget_GrSurfaceFlag :
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kNone_GrSurfaceFlags;
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desc.fConfig = kSkia8888_GrPixelConfig;
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desc.fWidth = 2 * S;
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desc.fHeight = 2 * S;
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GrTexture* texture = ctx->textureProvider()->createTexture(
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desc, false, gTextureData.get(), 0);
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if (!texture) {
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return;
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}
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SkAutoTUnref<GrTexture> au(texture);
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// setup new clip
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GrClip clip(SkRect::MakeWH(2*S, 2*S));
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GrPaint paint;
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paint.setPorterDuffXPFactory(SkXfermode::kSrcOver_Mode);
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SkMatrix vm;
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if (i) {
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vm.setRotate(90 * SK_Scalar1,
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S * SK_Scalar1,
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S * SK_Scalar1);
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} else {
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vm.reset();
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}
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SkMatrix tm;
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tm = vm;
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tm.postIDiv(2*S, 2*S);
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paint.addColorTextureProcessor(texture, tm);
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drawContext->drawRect(clip, paint, vm, SkRect::MakeWH(2*S, 2*S));
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// now update the lower right of the texture in first pass
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// or upper right in second pass
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offset = 0;
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for (int y = 0; y < S; ++y) {
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for (int x = 0; x < S; ++x) {
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gTextureData[offset + y * stride + x] =
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((x + y) % 2) ? (i ? green : red) : blue;
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}
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}
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texture->writePixels(S, (i ? 0 : S), S, S,
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texture->config(), gTextureData.get(),
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4 * stride);
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drawContext->drawRect(clip, paint, vm, SkRect::MakeWH(2*S, 2*S));
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}
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} else {
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skiagm::GM::DrawGpuOnlyMessage(canvas);
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}
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}
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#endif
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