1 /*
2 * Copyright (c) 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
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 /** @file explicit-offset-bufferstorage.c
25 *
26 * This is a copy of the arb_uniform_buffer_object bufferstorage test updated
27 * to make use of explicit offsets.
28 *
29 * Test rendering with UBOs. We draw four squares with different
30 * positions, sizes, rotations and colors where those parameters come
31 * from UBOs. Same as rendering.c, except that the UBOs are
32 * persistently mapped.
33 */
34
35 #include "piglit-util-gl.h"
36
37 PIGLIT_GL_TEST_CONFIG_BEGIN
38
39 config.supports_gl_core_version = 32;
40 config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
41
42 PIGLIT_GL_TEST_CONFIG_END
43
44 static const char vert_shader_text[] =
45 "#version 150\n"
46 "#extension GL_ARB_enhanced_layouts : require\n"
47 "#extension GL_ARB_uniform_buffer_object : require\n"
48 "\n"
49 "in vec4 piglit_vertex;\n"
50 "\n"
51 "layout(std140) uniform;\n"
52 "uniform ub_pos_size {\n"
53 " layout(offset = 8) vec2 pos;\n"
54 " layout(offset = 24) float size;\n"
55 "};\n"
56 "uniform ub_rot {float rotation; };\n"
57 "\n"
58 "void main()\n"
59 "{\n"
60 " mat2 m;\n"
61 " m[0][0] = m[1][1] = cos(rotation); \n"
62 " m[0][1] = sin(rotation); \n"
63 " m[1][0] = -m[0][1]; \n"
64 " gl_Position.xy = m * piglit_vertex.xy * vec2(size) + pos;\n"
65 " gl_Position.zw = vec2(0, 1);\n"
66 "}\n";
67
68 static const char frag_shader_text[] =
69 "#version 150\n"
70 "#extension GL_ARB_enhanced_layouts : require\n"
71 "#extension GL_ARB_uniform_buffer_object : require\n"
72 "\n"
73 "layout(std140) uniform;\n"
74 "uniform ub_color {\n"
75 " layout(offset = 0) vec4 color;\n"
76 " layout(offset = 20) float color_scale;\n"
77 "} named_ub;\n"
78 "\n"
79 "void main()\n"
80 "{\n"
81 " gl_FragColor = named_ub.color * named_ub.color_scale;\n"
82 "}\n";
83
84 #define NUM_SQUARES 4
85 #define NUM_UBOS 3
86
87 /* Square positions and sizes */
88 static const float pos_size[NUM_SQUARES][7] = {
89 { 0.0, 0.0, -0.5, -0.5, 0.0, 0.0, 0.1 },
90 { 0.0, 0.0, 0.5, -0.5, 0.0, 0.0, 0.2 },
91 { 0.0, 0.0, -0.5, 0.5, 0.0, 0.0, 0.3 },
92 { 0.0, 0.0, 0.5, 0.5, 0.0, 0.0, 0.4 }
93 };
94
95 /* Square color and color_scales */
96 static const float color[NUM_SQUARES][8] = {
97 { 2.0, 0.0, 0.0, 1.0, 0.0, 0.50, 0.0, 0.0 },
98 { 0.0, 4.0, 0.0, 1.0, 0.0, 0.25, 0.0, 0.0 },
99 { 0.0, 0.0, 5.0, 1.0, 0.0, 0.20, 0.0, 0.0 },
100 { 0.2, 0.2, 0.2, 0.2, 0.0, 5.00, 0.0, 0.0 }
101 };
102
103 /* Square rotations */
104 static const float rotation[NUM_SQUARES] = {
105 0.0,
106 0.1,
107 0.2,
108 0.3
109 };
110
111 static GLuint prog;
112 static GLuint buffers[NUM_UBOS];
113 static void *ubos[NUM_UBOS];
114
115
116 static void
setup_ubos(void)117 setup_ubos(void)
118 {
119 static const char *names[NUM_UBOS] = {
120 "ub_pos_size",
121 "ub_color",
122 "ub_rot"
123 };
124 int i;
125
126 glGenBuffers(NUM_UBOS, buffers);
127
128 for (i = 0; i < NUM_UBOS; i++) {
129 GLint index, size;
130
131 /* query UBO index */
132 index = glGetUniformBlockIndex(prog, names[i]);
133
134 /* query UBO size */
135 glGetActiveUniformBlockiv(prog, index,
136 GL_UNIFORM_BLOCK_DATA_SIZE, &size);
137
138 printf("UBO %s: index = %d, size = %d\n",
139 names[i], index, size);
140
141 /* Allocate UBO */
142 glBindBuffer(GL_UNIFORM_BUFFER, buffers[i]);
143 glBufferStorage(GL_UNIFORM_BUFFER, size, NULL,
144 GL_MAP_WRITE_BIT |
145 GL_MAP_PERSISTENT_BIT |
146 GL_MAP_COHERENT_BIT |
147 GL_DYNAMIC_STORAGE_BIT);
148
149 piglit_check_gl_error(GL_NO_ERROR);
150
151 ubos[i] = glMapBufferRange(GL_UNIFORM_BUFFER, 0, size,
152 GL_MAP_WRITE_BIT |
153 GL_MAP_PERSISTENT_BIT |
154 GL_MAP_COHERENT_BIT);
155
156 piglit_check_gl_error(GL_NO_ERROR);
157
158 if (!ubos[i])
159 piglit_report_result(PIGLIT_FAIL);
160
161 /* Attach UBO */
162 glBindBufferBase(GL_UNIFORM_BUFFER, i, buffers[i]);
163 glUniformBlockBinding(prog, index, i);
164
165 if (!piglit_check_gl_error(GL_NO_ERROR))
166 piglit_report_result(PIGLIT_FAIL);
167 }
168 }
169
170
171 void
piglit_init(int argc,char ** argv)172 piglit_init(int argc, char **argv)
173 {
174 piglit_require_GLSL_version(150); /* Required for named blocks */
175 piglit_require_extension("GL_ARB_enhanced_layouts");
176 piglit_require_extension("GL_ARB_uniform_buffer_object");
177 piglit_require_extension("GL_ARB_buffer_storage");
178 piglit_require_extension("GL_ARB_map_buffer_range");
179
180 prog = piglit_build_simple_program(vert_shader_text, frag_shader_text);
181 assert(prog);
182 glUseProgram(prog);
183
184 setup_ubos();
185
186 glClearColor(0.2, 0.2, 0.2, 0.2);
187 }
188
189
190 static bool
probe(int x,int y,int color_index)191 probe(int x, int y, int color_index)
192 {
193 float expected[4];
194
195 /* mul color by color_scale */
196 expected[0] = color[color_index][0] * color[color_index][5];
197 expected[1] = color[color_index][1] * color[color_index][5];
198 expected[2] = color[color_index][2] * color[color_index][5];
199 expected[3] = color[color_index][3] * color[color_index][5];
200
201 return piglit_probe_pixel_rgba(x, y, expected);
202 }
203
204
205 enum piglit_result
piglit_display(void)206 piglit_display(void)
207 {
208 GLsync fence;
209 bool pass = true;
210 int x0 = piglit_width / 4;
211 int x1 = piglit_width * 3 / 4;
212 int y0 = piglit_height / 4;
213 int y1 = piglit_height * 3 / 4;
214 int i;
215
216 glViewport(0, 0, piglit_width, piglit_height);
217
218 glClear(GL_COLOR_BUFFER_BIT);
219
220 for (i = 0; i < NUM_SQUARES; i++) {
221 /* Wait for any previous rendering to finish before
222 * updating the UBOs
223 */
224 fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
225 glClientWaitSync(fence, GL_SYNC_FLUSH_COMMANDS_BIT,
226 GL_TIMEOUT_IGNORED);
227
228 /* Load UBO data */
229 memcpy(ubos[0], pos_size[i], sizeof(pos_size[0]));
230 memcpy(ubos[1], color[i], sizeof(color[0]));
231 memcpy(ubos[2], &rotation[i], sizeof(rotation[0]));
232
233 piglit_draw_rect(-1, -1, 2, 2);
234 }
235
236 pass = probe(x0, y0, 0) && pass;
237 pass = probe(x1, y0, 1) && pass;
238 pass = probe(x0, y1, 2) && pass;
239 pass = probe(x1, y1, 3) && pass;
240
241 piglit_present_results();
242
243 return pass ? PIGLIT_PASS : PIGLIT_FAIL;
244 }
245