1 /*
2 * Copyright © 2014 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 * With AMD OpenGL drivers, when we draw a point sprite and use
26 * gl_PointCoord in the fragment (pixel) shader, the buggy host driver
27 * will wrongly put gl_PointCoord value into a fragment shader input
28 * variable, e.g., fs_color0, so that the rendering results are all wrong.
29 * We will NOT see this issue if there is no vertex attribute for the
30 * vertex position.
31 *
32 * Known to be
33 * -- Present in : ATI HD 6770M on Mac OS X 10.8.4
34 * -- Fixed in : Mac OS 10.9
35 */
36
37
38 #include "piglit-util-gl.h"
39
40 PIGLIT_GL_TEST_CONFIG_BEGIN
41
42 config.supports_gl_core_version = 32;
43 config.supports_gl_compat_version = 32;
44
45 config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
46 config.khr_no_error_support = PIGLIT_NO_ERRORS;
47
48 PIGLIT_GL_TEST_CONFIG_END
49
50 #define WIDTH 32
51 #define HEIGHT 32
52 #define LEVELS 6
53 #define COLOR_GRAY 0x7F7F7FFF
54 #define CLEAR_COLOR 0x000033FF
55 #define NUM_VERTICES 4
56 #define NUM_ATTRS 2
57 #define ATTR_SIZE 4
58
59 static GLuint prog;
60
61 static bool
test_pointsprite_ps(void)62 test_pointsprite_ps(void)
63 {
64 static const float vertArray[ATTR_SIZE * NUM_ATTRS] = {
65 0.0f, 0.0f, 0.0f, 1.0f,
66 1.0f, 1.0f, 1.0f, 1.0f,
67 };
68 const unsigned int numPixels = WIDTH * HEIGHT;
69 GLuint texData[WIDTH * HEIGHT];
70 GLuint i, texFbo, fbo, vertexArray, vertexBuf;
71 GLint attrLoc;
72 const float pointSize = WIDTH;
73 const unsigned int expectedTexelColor = 0xFFFFFFFF;
74
75 for (i = 0; i < numPixels; ++i) {
76 texData[i] = COLOR_GRAY;
77 }
78
79 /* Create 2D textures */
80 glGenTextures(1, &texFbo);
81 glActiveTexture(GL_TEXTURE0);
82 glBindTexture(GL_TEXTURE_2D, texFbo);
83 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, WIDTH, HEIGHT, 0,
84 GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texData);
85
86 if (!piglit_check_gl_error(GL_NO_ERROR))
87 return false;
88
89 /* Setup the vertex attributes */
90 glGenVertexArrays(1, &vertexArray);
91 glBindVertexArray(vertexArray);
92 glGenBuffers(1, &vertexBuf);
93 glBindBuffer(GL_ARRAY_BUFFER, vertexBuf);
94 glBufferData(GL_ARRAY_BUFFER, sizeof(vertArray), vertArray,
95 GL_STATIC_DRAW);
96
97 for (i = 0; i < NUM_ATTRS; i++) {
98 const GLvoid *offset =
99 (const GLvoid *)(i * ATTR_SIZE * sizeof(float));
100 GLchar name[8];
101
102 snprintf(name, sizeof name, "Attr%d", i);
103 attrLoc = glGetAttribLocation(prog, name);
104 glEnableVertexAttribArray(attrLoc);
105 glVertexAttribPointer(attrLoc, ATTR_SIZE, GL_FLOAT, GL_FALSE,
106 ATTR_SIZE * sizeof(float), offset);
107 }
108
109 if (!piglit_check_gl_error(GL_NO_ERROR))
110 return false;
111
112 /* Setup the FBO */
113 glGenFramebuffers(1, &fbo);
114 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
115 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
116 GL_TEXTURE_2D, texFbo, 0);
117 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) !=
118 GL_FRAMEBUFFER_COMPLETE) {
119 printf("incomplete framebuffer at line %d\n", __LINE__);
120 return false;
121 }
122
123 glDrawBuffer(GL_COLOR_ATTACHMENT0);
124 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) !=
125 GL_FRAMEBUFFER_COMPLETE) {
126 printf("incomplete framebuffer at line %d\n", __LINE__);
127 return false;
128 }
129
130 /* Clear and draw */
131 glViewport(0, 0, WIDTH, HEIGHT);
132 glClearColor(((CLEAR_COLOR >> 24) & 0xFF) / 255.0f,
133 ((CLEAR_COLOR >> 16) & 0xFF) / 255.0f,
134 ((CLEAR_COLOR >> 8) & 0xFF) / 255.0f,
135 ((CLEAR_COLOR) & 0xFF) / 255.0f);
136 glClear(GL_COLOR_BUFFER_BIT);
137 glPointSize(pointSize);
138 glPointParameteri(GL_POINT_SPRITE_COORD_ORIGIN, GL_LOWER_LEFT);
139 glDrawArrays(GL_POINTS, 0, 1);
140
141 /* Read back */
142 glReadBuffer(GL_COLOR_ATTACHMENT0);
143 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) !=
144 GL_FRAMEBUFFER_COMPLETE) {
145 printf("incomplete framebuffer at line %d\n", __LINE__);
146 return false;
147 }
148
149 /* read color buffer */
150 glPixelStorei(GL_PACK_ROW_LENGTH, WIDTH);
151 glPixelStorei(GL_PACK_ALIGNMENT, 1);
152 memset(texData, 0, sizeof(texData));
153 glReadPixels(0, 0, WIDTH, HEIGHT,
154 GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texData);
155
156 if (texData[0] != expectedTexelColor) {
157 printf("At pixel (0,0) expected 0x%x but found 0x%x\n",
158 expectedTexelColor, texData[0]);
159 /* clean up */
160 glDeleteTextures(1, &texFbo);
161 glDeleteFramebuffers(1, &fbo);
162 return false;
163 }
164
165 if (!piglit_check_gl_error(GL_NO_ERROR))
166 return false;
167
168 glDeleteTextures(1, &texFbo);
169 glDeleteFramebuffers(1, &fbo);
170 return true;
171 }
172
173
174 static void
setup_shaders(void)175 setup_shaders(void)
176 {
177 static const char *vsSrc =
178 "#version 150\n"
179 "in vec4 Attr0;"
180 "in vec4 Attr1;"
181 "smooth out vec4 fs_color0;"
182 "void main(void) {"
183 " gl_Position = Attr0;"
184 " fs_color0 = Attr1;"
185 "}";
186 static const char *fsSrc =
187 "#version 150\n"
188 "smooth in vec4 fs_color0;"
189 "out vec4 fragColor0;"
190 "void main(void) {"
191 " vec2 psCoords = gl_PointCoord;"
192 " fragColor0 = fs_color0;"
193 "}";
194
195 prog = piglit_build_simple_program(vsSrc, fsSrc);
196 glBindFragDataLocation(prog, 0, "fragColor0");
197 glLinkProgram(prog);
198 glUseProgram(prog);
199 }
200
201
202 enum piglit_result
piglit_display(void)203 piglit_display(void)
204 {
205 bool pass = test_pointsprite_ps();
206
207 return pass ? PIGLIT_PASS : PIGLIT_FAIL;
208 }
209
210
211 void
piglit_init(int argc,char ** argv)212 piglit_init(int argc, char **argv)
213 {
214 setup_shaders();
215 }
216