1 /*
2 * Copyright 2016 Advanced Micro Devices, 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
21 * DEALINGS IN THE SOFTWARE.
22 *
23 */
24
25 #include "piglit-util-gl.h"
26
27 /* File: stencil-clear.c
28 *
29 * Tests whether clearing a multisample stencil texture, followed by a blit
30 * and subsequent rendering works correctly.
31 */
32
33 #define TEX_WIDTH 256
34 #define TEX_HEIGHT 256
35
36 PIGLIT_GL_TEST_CONFIG_BEGIN
37
38 config.supports_gl_compat_version = 30;
39 config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
40 config.window_width = TEX_WIDTH;
41 config.window_height = TEX_HEIGHT;
42 config.khr_no_error_support = PIGLIT_NO_ERRORS;
43
44 PIGLIT_GL_TEST_CONFIG_END
45
46 static GLuint fbo, fbo_copy;
47
48 static void
usage(void)49 usage(void)
50 {
51 fprintf(stderr, "usage: arb_texture_multisample-stencil-clear [samples N]\n");
52 exit(1);
53 }
54
55 enum piglit_result
piglit_display(void)56 piglit_display(void)
57 {
58 static const float black[4] = { 0.0f, 0.0f, 0.0f, 1.0f };
59 bool pass = true;
60
61 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
62 glViewport(0, 0, TEX_WIDTH, TEX_HEIGHT);
63
64 glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
65 glClearDepth(0.0f);
66 glClearStencil(0);
67 glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
68
69 glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo);
70 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_copy);
71
72 /* This blit is there on purpose to trigger a bug in stencil decompress
73 * on Radeon. The blit destination is not used.
74 */
75 glBlitFramebuffer(0, 0, TEX_WIDTH, TEX_WIDTH, 0, 0, TEX_WIDTH, TEX_WIDTH, GL_STENCIL_BUFFER_BIT, GL_NEAREST);
76 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
77
78 glEnable(GL_STENCIL_TEST);
79 glStencilMask(255);
80 glStencilFunc(GL_LEQUAL, 1, 255);
81 glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
82
83 glColor4f(1.0, 1.0, 1.0, 1.0);
84 glBegin(GL_TRIANGLE_FAN);
85 glVertex3f( 0.0174f, -0.00413f, 1.0f);
86 glVertex3f(-1.0f, -1.0f, 1.0f);
87 glVertex3f( 1.0f, -1.0f, -1.0f);
88 glVertex3f( 1.0f, 1.0f, 1.0f);
89 glVertex3f(-1.0f, 1.0f, -1.0f);
90 glVertex3f(-1.0f, -1.0f, -1.0f);
91 glEnd();
92
93 glDisable(GL_STENCIL_TEST);
94
95 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
96 glClearColor(1.0, 0.0, 1.0, 1.0);
97 glClear(GL_COLOR_BUFFER_BIT);
98
99 glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo);
100 glBlitFramebuffer(0, 0, TEX_WIDTH, TEX_HEIGHT, 0, 0, TEX_WIDTH, TEX_HEIGHT,
101 GL_COLOR_BUFFER_BIT, GL_NEAREST);
102 glBindFramebuffer(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
103
104 pass = piglit_probe_rect_rgb(0, 0, TEX_WIDTH, TEX_HEIGHT, black) && pass;
105
106 piglit_present_results();
107
108 return pass ? PIGLIT_PASS : PIGLIT_FAIL;
109 }
110
create_fbo(unsigned num_color_samples,unsigned num_depth_samples)111 GLuint create_fbo(unsigned num_color_samples, unsigned num_depth_samples)
112 {
113 GLenum tex_target;
114 GLuint texColor;
115 GLuint texZS;
116 GLuint fbo;
117
118 /* setup an fbo with (optionally multisample) textures */
119 glGenTextures(1, &texColor);
120 glGenTextures(1, &texZS);
121
122 if (num_color_samples != 0) {
123 tex_target = GL_TEXTURE_2D_MULTISAMPLE;
124
125 glBindTexture(tex_target, texZS);
126 glTexImage2DMultisample(
127 tex_target, num_depth_samples, GL_DEPTH32F_STENCIL8,
128 TEX_WIDTH, TEX_HEIGHT, GL_TRUE);
129
130 glBindTexture(tex_target, texColor);
131 glTexImage2DMultisample(
132 tex_target, num_color_samples, GL_RGBA8,
133 TEX_WIDTH, TEX_HEIGHT, GL_TRUE);
134 } else {
135 tex_target = GL_TEXTURE_2D;
136
137 glBindTexture(tex_target, texZS);
138 glTexParameteri(tex_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
139 glTexParameteri(tex_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
140 glTexImage2D(tex_target, 0, GL_DEPTH32F_STENCIL8,
141 TEX_WIDTH, TEX_HEIGHT, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
142
143 glBindTexture(tex_target, texColor);
144 glTexParameteri(tex_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
145 glTexParameteri(tex_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
146 glTexImage2D(tex_target, 0, GL_RGBA8, TEX_WIDTH, TEX_HEIGHT, 0,
147 GL_RGBA, GL_FLOAT, NULL);
148 }
149
150 glGenFramebuffers(1, &fbo);
151 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
152 glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER,
153 GL_DEPTH_STENCIL_ATTACHMENT,
154 tex_target, texZS, 0);
155 glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER,
156 GL_COLOR_ATTACHMENT0,
157 tex_target, texColor, 0);
158
159 if (!piglit_check_gl_error(GL_NO_ERROR)) {
160 printf("Error during tex/fbo setup; no point continuing.\n");
161 piglit_report_result(PIGLIT_FAIL);
162 }
163
164 return fbo;
165 }
166
167 void
piglit_init(int argc,char ** argv)168 piglit_init(int argc, char **argv)
169 {
170 GLint num_color_samples, num_depth_samples;
171
172 piglit_require_extension("GL_ARB_texture_multisample");
173
174 /* By default, se the max number of samples for testing */
175 glGetIntegerv(GL_MAX_COLOR_TEXTURE_SAMPLES, &num_color_samples);
176 glGetIntegerv(GL_MAX_DEPTH_TEXTURE_SAMPLES, &num_depth_samples);
177
178 for (int i = 1; i < argc; ++i) {
179 if (!strcmp(argv[i], "samples")) {
180 ++i;
181 if (i >= argc)
182 usage();
183 num_color_samples = num_depth_samples = atoi(argv[i]);
184 } else
185 usage();
186 }
187
188 printf("Number of color samples: %u depth samples: %d\n",
189 num_color_samples, num_depth_samples);
190
191 fbo = create_fbo(num_color_samples, num_depth_samples);
192 fbo_copy = create_fbo(0, 0);
193 }
194