2 * Copyright 2016 Google Inc.
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
8 // This test only works with the GPU backend.
14 #include "GrBackendSurface.h"
15 #include "GrContext.h"
18 #include "gl/GrGLContext.h"
20 #include "SkGradientShader.h"
24 class RectangleTexture : public GM {
27 this->setBGColor(0xFFFFFFFF);
31 SkString onShortName() override {
32 return SkString("rectangle_texture");
35 SkISize onISize() override {
36 return SkISize::Make(1035, 240);
39 void fillPixels(int width, int height, void *pixels) {
41 bmp.setInfo(SkImageInfo::MakeN32(width, height, kOpaque_SkAlphaType), width * 4);
42 bmp.setPixels(pixels);
45 SkPoint pts[] = { {0, 0}, {0, SkIntToScalar(height)} };
46 SkColor colors0[] = { 0xFF1060B0 , 0xFF102030 };
47 paint.setShader(SkGradientShader::MakeLinear(pts, colors0, nullptr, 2,
48 SkShader::kClamp_TileMode));
49 canvas.drawPaint(paint);
51 SkColor colors1[] = { 0xFFA07010 , 0xFFA02080 };
52 paint.setAntiAlias(true);
53 paint.setShader(SkGradientShader::MakeLinear(pts, colors1, nullptr, 2,
54 SkShader::kClamp_TileMode));
55 canvas.drawCircle(SkIntToScalar(width) / 2, SkIntToScalar(height) / 2,
56 SkIntToScalar(width + height) / 5, paint);
59 sk_sp<SkImage> createRectangleTextureImg(GrContext* context, int width, int height,
64 GrGpu* gpu = context->getGpu();
68 const GrGLContext* glCtx = gpu->glContextForTesting();
73 if (!(kGL_GrGLStandard == glCtx->standard() && glCtx->version() >= GR_GL_VER(3, 1)) &&
74 !glCtx->hasExtension("GL_ARB_texture_rectangle")) {
78 // We will always create the GL texture as GL_RGBA, however the pixels uploaded may be
79 // be RGBA or BGRA, depending on how SkPMColor was compiled.
81 if (kSkia8888_GrPixelConfig == kBGRA_8888_GrPixelConfig) {
84 SkASSERT(kSkia8888_GrPixelConfig == kRGBA_8888_GrPixelConfig);
88 const GrGLInterface* gl = glCtx->interface();
89 // Useful for debugging whether errors result from use of RECTANGLE
90 // #define TARGET GR_GL_TEXTURE_2D
91 #define TARGET GR_GL_TEXTURE_RECTANGLE
93 GR_GL_CALL(gl, GenTextures(1, &id));
94 GR_GL_CALL(gl, BindTexture(TARGET, id));
95 GR_GL_CALL(gl, TexParameteri(TARGET, GR_GL_TEXTURE_MAG_FILTER,
97 GR_GL_CALL(gl, TexParameteri(TARGET, GR_GL_TEXTURE_MIN_FILTER,
99 GR_GL_CALL(gl, TexParameteri(TARGET, GR_GL_TEXTURE_WRAP_S,
100 GR_GL_CLAMP_TO_EDGE));
101 GR_GL_CALL(gl, TexParameteri(TARGET, GR_GL_TEXTURE_WRAP_T,
102 GR_GL_CLAMP_TO_EDGE));
103 GR_GL_CALL(gl, TexImage2D(TARGET, 0, GR_GL_RGBA, width, height, 0,
104 format, GR_GL_UNSIGNED_BYTE, pixels));
107 context->resetContext();
108 GrGLTextureInfo info;
110 info.fTarget = TARGET;
112 GrBackendTexture rectangleTex(width, height, kRGBA_8888_GrPixelConfig, info);
114 if (sk_sp<SkImage> image = SkImage::MakeFromAdoptedTexture(context, rectangleTex,
115 kTopLeft_GrSurfaceOrigin)) {
118 GR_GL_CALL(gl, DeleteTextures(1, &id));
122 void onDraw(SkCanvas* canvas) override {
123 GrContext *context = canvas->getGrContext();
125 skiagm::GM::DrawGpuOnlyMessage(canvas);
129 constexpr int kWidth = 50;
130 constexpr int kHeight = 50;
131 constexpr SkScalar kPad = 5.f;
133 SkPMColor pixels[kWidth * kHeight];
134 this->fillPixels(kWidth, kHeight, pixels);
135 sk_sp<SkImage> rectImg(this->createRectangleTextureImg(context, kWidth, kHeight, pixels));
139 paint.setAntiAlias(true);
140 const char* kMsg = "Could not create rectangle texture image.";
141 canvas->drawString(kMsg, 10, 100, paint);
145 constexpr SkFilterQuality kQualities[] = {
146 kNone_SkFilterQuality,
147 kLow_SkFilterQuality,
148 kMedium_SkFilterQuality,
149 kHigh_SkFilterQuality,
152 constexpr SkScalar kScales[] = { 1.0f, 1.2f, 0.75f };
154 canvas->translate(kPad, kPad);
155 for (auto s : kScales) {
158 for (auto q : kQualities) {
160 plainPaint.setFilterQuality(q);
161 canvas->drawImage(rectImg.get(), 0, 0, &plainPaint);
162 canvas->translate(kWidth + kPad, 0);
165 clampPaint.setFilterQuality(q);
166 clampPaint.setShader(rectImg->makeShader());
167 canvas->drawRect(SkRect::MakeWH(1.5f * kWidth, 1.5f * kHeight), clampPaint);
168 canvas->translate(kWidth * 1.5f + kPad, 0);
171 repeatPaint.setFilterQuality(q);
172 repeatPaint.setShader(rectImg->makeShader(SkShader::kRepeat_TileMode,
173 SkShader::kMirror_TileMode));
174 canvas->drawRect(SkRect::MakeWH(1.5f * kWidth, 1.5f * kHeight), repeatPaint);
175 canvas->translate(1.5f * kWidth + kPad, 0);
178 canvas->translate(0, kPad + 1.5f * kHeight * s);
183 typedef GM INHERITED;
186 DEF_GM(return new RectangleTexture;)