1 /*
2 * Copyright 2015 VMware, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 /**
25 * This test exercises some subtle format issues for GL_ARB_copy_image.
26 * If a driver supports texture formats which only vary by swizzling (ex: RGBA vs.
27 * BGRA) we may wind up using different hardware texture formats depending
28 * on the user-specified format and type arguments to glTexImage.
29 * When we try to copy between such textures, the copy-sub-image code
30 * must be able to handle the swizzling.
31 *
32 * Brian Paul
33 * 31 August 2015
34 */
35
36
37 #include "piglit-util-gl.h"
38
39 PIGLIT_GL_TEST_CONFIG_BEGIN
40 config.supports_gl_compat_version = 13;
41 config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
42 config.khr_no_error_support = PIGLIT_NO_ERRORS;
43 PIGLIT_GL_TEST_CONFIG_END
44
45
46 static bool
test_combination(GLenum intFormat,GLenum srcFormat,GLenum srcType,GLenum dstFormat,GLenum dstType)47 test_combination(GLenum intFormat,
48 GLenum srcFormat, GLenum srcType,
49 GLenum dstFormat, GLenum dstType)
50 {
51 const int width = 16, height = 16;
52 int i;
53 GLuint textures[2];
54 GLubyte *image, *getimage;
55 bool pass = true;
56 int comps;
57
58 switch (srcFormat) {
59 case GL_RGB:
60 case GL_BGR:
61 comps = 3;
62 break;
63 case GL_RGBA:
64 case GL_BGRA:
65 case GL_RGBA_INTEGER:
66 case GL_BGRA_INTEGER:
67 comps = 4;
68 break;
69 default:
70 assert(!"Unexpected format");
71 comps = 4;
72 }
73
74 getimage = malloc(width * height * comps);
75
76 image = malloc(width * height * comps);
77 if (comps == 4) {
78 for (i = 0; i < width * height; i++) {
79 image[i * 4 + 0] = 0xff;
80 image[i * 4 + 1] = 0x80;
81 image[i * 4 + 2] = 0x40;
82 image[i * 4 + 3] = 0x20;
83 }
84 }
85 else {
86 for (i = 0; i < width * height; i++) {
87 image[i * 3 + 0] = 0xff;
88 image[i * 3 + 1] = 0x80;
89 image[i * 3 + 2] = 0x40;
90 }
91 }
92
93 glGenTextures(2, textures);
94
95 /* setup tex0 */
96 glBindTexture(GL_TEXTURE_2D, textures[0]);
97 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
98 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
99 glTexImage2D(GL_TEXTURE_2D, 0, intFormat, width, height, 0,
100 srcFormat, srcType, image);
101
102 /* setup tex1 */
103 glBindTexture(GL_TEXTURE_2D, textures[1]);
104 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
105 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
106 glTexImage2D(GL_TEXTURE_2D, 0, intFormat, width, height, 0,
107 dstFormat, dstType, NULL);
108
109 if (!piglit_check_gl_error(GL_NO_ERROR)) {
110 /* should be no errors */
111 pass = false;
112 }
113
114 /* Copy from tex0 to tex1 */
115 glCopyImageSubData(textures[0], GL_TEXTURE_2D, 0, /* src image */
116 0, 0, 0, /* src offset */
117 textures[1], GL_TEXTURE_2D, 0, /* dst image */
118 0, 0, 0, /* dst offset */
119 width, height, 1); /* src size */
120
121 /* Readback tex1 */
122 glGetTexImage(GL_TEXTURE_2D, 0, srcFormat, srcType, getimage);
123
124 if (memcmp(image, getimage, width * height * comps) != 0) {
125 printf("Failure:\n");
126 printf(" internal tex format=%s\n",
127 piglit_get_gl_enum_name(intFormat));
128 printf(" src tex format=%s type=%s\n",
129 piglit_get_gl_enum_name(srcFormat),
130 piglit_get_gl_enum_name(srcType));
131 printf(" dst tex format=%s type=%s\n",
132 piglit_get_gl_enum_name(dstFormat),
133 piglit_get_gl_enum_name(dstType));
134 printf("Expected %u %u %u %u\n",
135 image[0], image[1], image[2], image[3]);
136 printf("Found %u %u %u %u\n",
137 getimage[0], getimage[1], getimage[2], getimage[3]);
138 pass = false;
139 }
140
141 glDeleteTextures(2, textures);
142
143 free(image);
144 free(getimage);
145
146 return pass;
147 }
148
149
150 enum piglit_result
piglit_display(void)151 piglit_display(void)
152 {
153 /* nothing */
154 return PIGLIT_SKIP;
155 }
156
157
158 void
piglit_init(int argc,char ** argv)159 piglit_init(int argc, char **argv)
160 {
161 static const GLenum formats[] = {
162 GL_RGBA,
163 GL_BGRA
164 };
165 static const GLenum rgbFormats[] = {
166 GL_RGB,
167 GL_BGR
168 };
169 static const GLenum intFormats[] = {
170 GL_RGBA_INTEGER,
171 GL_BGRA_INTEGER,
172 };
173 static const GLenum types[] = {
174 GL_UNSIGNED_BYTE,
175 GL_UNSIGNED_INT_8_8_8_8,
176 GL_UNSIGNED_INT_8_8_8_8_REV,
177 };
178 int sf, st, df, dt;
179 bool pass = true;
180
181 piglit_require_extension("GL_ARB_copy_image");
182
183 /* Test all RGBA format/type combinations for the src/dst textures */
184 for (sf = 0; sf < ARRAY_SIZE(formats); sf++) {
185 for (df = 0; df < ARRAY_SIZE(formats); df++) {
186 for (st = 0; st < ARRAY_SIZE(types); st++) {
187 for (dt = 0; dt < ARRAY_SIZE(types); dt++) {
188 if (!test_combination(GL_RGBA,
189 formats[sf],
190 types[st],
191 formats[df],
192 types[dt])) {
193 pass = false;
194 }
195 }
196 }
197 }
198 }
199
200 /* RGB formats */
201 for (sf = 0; sf < ARRAY_SIZE(rgbFormats); sf++) {
202 for (df = 0; df < ARRAY_SIZE(rgbFormats); df++) {
203 if (!test_combination(GL_RGBA,
204 rgbFormats[sf],
205 GL_UNSIGNED_BYTE,
206 rgbFormats[df],
207 GL_UNSIGNED_BYTE)) {
208 pass = false;
209 }
210 }
211 }
212
213 /* integer formats */
214 if (piglit_is_extension_supported("GL_EXT_texture_integer")) {
215 for (sf = 0; sf < ARRAY_SIZE(intFormats); sf++) {
216 for (df = 0; df < ARRAY_SIZE(intFormats); df++) {
217 for (st = 0; st < ARRAY_SIZE(types); st++) {
218 for (dt = 0; dt < ARRAY_SIZE(types); dt++) {
219 if (!test_combination(GL_RGBA8UI,
220 intFormats[sf],
221 types[st],
222 intFormats[df],
223 types[dt])) {
224 pass = false;
225 }
226 }
227 }
228 }
229 }
230 }
231
232 piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
233 }
234