1 /*
2 * Copyright 2015 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "Test.h"
9 #if SK_SUPPORT_GPU
10 #include "GrContext.h"
11 #include "GrDrawContext.h"
12 #include "gl/GrGLGpu.h"
13 #include "gl/GrGLUtil.h"
14 #include "gl/SkGLContext.h"
15
test_read_pixels(skiatest::Reporter * reporter,GrContext * context,GrTexture * rectangleTexture,uint32_t expectedPixelValues[])16 static void test_read_pixels(skiatest::Reporter* reporter, GrContext* context,
17 GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) {
18 int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
19 SkAutoTMalloc<uint32_t> pixels(pixelCnt);
20 memset(pixels.get(), 0, sizeof(uint32_t)*pixelCnt);
21 bool read = rectangleTexture->readPixels(0, 0, rectangleTexture->width(),
22 rectangleTexture->height(), kRGBA_8888_GrPixelConfig,
23 pixels.get());
24 if (!read) {
25 ERRORF(reporter, "Error reading rectangle texture.");
26 }
27 for (int i = 0; i < pixelCnt; ++i) {
28 if (pixels.get()[i] != expectedPixelValues[i]) {
29 ERRORF(reporter, "Error, rectangle texture pixel value %d should be 0x%08x,"
30 " got 0x%08x.", i, expectedPixelValues[i], pixels.get()[i]);
31 break;
32 }
33 }
34 }
35
test_write_pixels(skiatest::Reporter * reporter,GrContext * context,GrTexture * rectangleTexture)36 static void test_write_pixels(skiatest::Reporter* reporter, GrContext* context,
37 GrTexture* rectangleTexture) {
38 int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
39 SkAutoTMalloc<uint32_t> pixels(pixelCnt);
40 for (int y = 0; y < rectangleTexture->width(); ++y) {
41 for (int x = 0; x < rectangleTexture->height(); ++x) {
42 pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(x, y, x + y, x * y);
43 }
44 }
45 bool write = rectangleTexture->writePixels(0, 0, rectangleTexture->width(),
46 rectangleTexture->height(), kRGBA_8888_GrPixelConfig,
47 pixels.get());
48 if (!write) {
49 ERRORF(reporter, "Error writing to rectangle texture.");
50 }
51 test_read_pixels(reporter, context, rectangleTexture, pixels.get());
52 }
53
test_copy_surface_src(skiatest::Reporter * reporter,GrContext * context,GrTexture * rectangleTexture,uint32_t expectedPixelValues[])54 static void test_copy_surface_src(skiatest::Reporter* reporter, GrContext* context,
55 GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) {
56 GrSurfaceDesc copyDstDesc;
57 copyDstDesc.fConfig = kRGBA_8888_GrPixelConfig;
58 copyDstDesc.fWidth = rectangleTexture->width();
59 copyDstDesc.fHeight = rectangleTexture->height();
60 copyDstDesc.fFlags = kRenderTarget_GrSurfaceFlag;
61 SkAutoTUnref<GrTexture> dst(context->textureProvider()->createTexture(
62 copyDstDesc, SkBudgeted::kYes));
63 context->copySurface(dst, rectangleTexture);
64 test_read_pixels(reporter, context, dst, expectedPixelValues);
65 }
66
test_copy_surface_dst(skiatest::Reporter * reporter,GrContext * context,GrTexture * rectangleTexture)67 static void test_copy_surface_dst(skiatest::Reporter* reporter, GrContext* context,
68 GrTexture* rectangleTexture) {
69 int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
70 SkAutoTMalloc<uint32_t> pixels(pixelCnt);
71 for (int y = 0; y < rectangleTexture->width(); ++y) {
72 for (int x = 0; x < rectangleTexture->height(); ++x) {
73 pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(y, x, x * y, x *+ y);
74 }
75 }
76
77 GrSurfaceDesc copySrcDesc;
78 copySrcDesc.fConfig = kRGBA_8888_GrPixelConfig;
79 copySrcDesc.fWidth = rectangleTexture->width();
80 copySrcDesc.fHeight = rectangleTexture->height();
81 copySrcDesc.fFlags = kRenderTarget_GrSurfaceFlag;
82 SkAutoTUnref<GrTexture> src(context->textureProvider()->createTexture(
83 copySrcDesc, SkBudgeted::kYes, pixels.get(), 0));
84
85 context->copySurface(rectangleTexture, src);
86 test_read_pixels(reporter, context, rectangleTexture, pixels.get());
87 }
88
test_clear(skiatest::Reporter * reporter,GrContext * context,GrTexture * rectangleTexture)89 static void test_clear(skiatest::Reporter* reporter, GrContext* context,
90 GrTexture* rectangleTexture) {
91 if (rectangleTexture->asRenderTarget()) {
92 SkAutoTUnref<GrDrawContext> dc(context->drawContext(rectangleTexture->asRenderTarget()));
93 if (!dc) {
94 ERRORF(reporter, "Could not get GrDrawContext for rectangle texture.");
95 return;
96 }
97
98 // Clear the whole thing.
99 GrColor color0 = GrColorPackRGBA(0xA, 0xB, 0xC, 0xD);
100 dc->clear(nullptr, color0, false);
101
102 int w = rectangleTexture->width();
103 int h = rectangleTexture->height();
104 int pixelCnt = w * h;
105 SkAutoTMalloc<uint32_t> expectedPixels(pixelCnt);
106
107 // The clear color is a GrColor, our readback is to kRGBA_8888, which may be different.
108 uint32_t expectedColor0 = 0;
109 uint8_t* expectedBytes0 = SkTCast<uint8_t*>(&expectedColor0);
110 expectedBytes0[0] = GrColorUnpackR(color0);
111 expectedBytes0[1] = GrColorUnpackG(color0);
112 expectedBytes0[2] = GrColorUnpackB(color0);
113 expectedBytes0[3] = GrColorUnpackA(color0);
114 for (int i = 0; i < rectangleTexture->width() * rectangleTexture->height(); ++i) {
115 expectedPixels.get()[i] = expectedColor0;
116 }
117
118 // Clear the the top to a different color.
119 GrColor color1 = GrColorPackRGBA(0x1, 0x2, 0x3, 0x4);
120 SkIRect rect = SkIRect::MakeWH(w, h/2);
121 dc->clear(&rect, color1, false);
122
123 uint32_t expectedColor1 = 0;
124 uint8_t* expectedBytes1 = SkTCast<uint8_t*>(&expectedColor1);
125 expectedBytes1[0] = GrColorUnpackR(color1);
126 expectedBytes1[1] = GrColorUnpackG(color1);
127 expectedBytes1[2] = GrColorUnpackB(color1);
128 expectedBytes1[3] = GrColorUnpackA(color1);
129
130 for (int y = 0; y < h/2; ++y) {
131 for (int x = 0; x < w; ++x) {
132 expectedPixels.get()[y * h + x] = expectedColor1;
133 }
134 }
135
136 test_read_pixels(reporter, context, rectangleTexture, expectedPixels.get());
137 }
138 }
139
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(RectangleTexture,reporter,context,glContext)140 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(RectangleTexture, reporter, context, glContext) {
141 static const int kWidth = 13;
142 static const int kHeight = 13;
143
144 GrColor pixels[kWidth * kHeight];
145 for (int y = 0; y < kHeight; ++y) {
146 for (int x = 0; x < kWidth; ++x) {
147 pixels[y * kWidth + x] = y * kWidth + x;
148 }
149 }
150
151 for (int origin = 0; origin < 2; ++origin) {
152 GrGLuint rectTexID = glContext->createTextureRectangle(kWidth, kHeight, GR_GL_RGBA,
153 GR_GL_RGBA, GR_GL_UNSIGNED_BYTE,
154 pixels);
155
156 if (!rectTexID) {
157 return;
158 }
159
160 // Let GrContext know that we messed with the GL context directly.
161 context->resetContext();
162
163 // Wrap the rectangle texture ID in a GrTexture
164 GrGLTextureInfo rectangleInfo;
165 rectangleInfo.fID = rectTexID;
166 rectangleInfo.fTarget = GR_GL_TEXTURE_RECTANGLE;
167
168 GrBackendTextureDesc rectangleDesc;
169 rectangleDesc.fFlags = kRenderTarget_GrBackendTextureFlag;
170 rectangleDesc.fConfig = kRGBA_8888_GrPixelConfig;
171 rectangleDesc.fWidth = kWidth;
172 rectangleDesc.fHeight = kHeight;
173 rectangleDesc.fOrigin = origin ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin;
174 rectangleDesc.fTextureHandle = reinterpret_cast<GrBackendObject>(&rectangleInfo);
175
176 GrColor refPixels[kWidth * kHeight];
177 bool flipRef = rectangleDesc.fOrigin == kBottomLeft_GrSurfaceOrigin;
178 for (int y = 0; y < kHeight; ++y) {
179 for (int x = 0; x < kWidth; ++x) {
180 int y0 = flipRef ? kHeight - y - 1 : y;
181 refPixels[y * kWidth + x] = pixels[y0 * kWidth + x];
182 }
183 }
184
185 SkAutoTUnref<GrTexture> rectangleTexture(
186 context->textureProvider()->wrapBackendTexture(rectangleDesc));
187 if (!rectangleTexture) {
188 ERRORF(reporter, "Error wrapping rectangle texture in GrTexture.");
189 GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID));
190 continue;
191 }
192
193 test_read_pixels(reporter, context, rectangleTexture, refPixels);
194
195 test_copy_surface_src(reporter, context, rectangleTexture, refPixels);
196
197 test_copy_surface_dst(reporter, context, rectangleTexture);
198
199 test_write_pixels(reporter, context, rectangleTexture);
200
201 test_clear(reporter, context, rectangleTexture);
202
203 GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID));
204 }
205 }
206
207 #endif
208