tests/spec/ext_window_rectangles/render.c

   1 /*
   2  * Copyright (C) 2016 Ilia Mirkin
   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 #include "piglit-util-gl.h"
  25
  26 PIGLIT_GL_TEST_CONFIG_BEGIN
  27
  28         config.supports_gl_compat_version = 30;
  29         config.supports_gl_es_version = 30;
  30         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  31
  32 PIGLIT_GL_TEST_CONFIG_END
  33
  34 GLint prog, color;
  35 GLuint fb;
  36 static int max_rectangles;
  37
  38 enum piglit_result
  39 piglit_display(void)
  40 {
  41         static const float blue[4] = {0, 0, 1, 1};
  42         static const float green[4] = {0, 1, 0, 1};
  43         static const int rect[4 * 8] = {
  44           0, 0, 1, 1,
  45           2, 0, 1, 1,
  46           4, 0, 1, 1,
  47           1, 1, 1, 1,
  48           3, 1, 1, 1,
  49           5, 1, 1, 1,
  50           0, 2, 1, 1,
  51           2, 2, 1, 1,
  52         };
  53
  54         bool pass = true;
  55
  56         glBindFramebuffer(GL_FRAMEBUFFER, fb);
  57         glUseProgram(prog);
  58
  59         glViewport(0, 0, 20, 20);
  60
  61         for (int num_rectangles = 1; num_rectangles <= max_rectangles; num_rectangles++) {
  62                 glClearColor(0, 0, 1, 1);
  63                 glClear(GL_COLOR_BUFFER_BIT);
  64
  65                 glWindowRectanglesEXT(GL_EXCLUSIVE_EXT, num_rectangles, rect);
  66                 glUniform4fv(color, 1, green);
  67                 glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
  68
  69                 bool subresult = true;
  70
  71                 for (int y = 0; y < 20; y++) {
  72                         for (int x = 0; x < 20; x++) {
  73                                 bool excluded = false;
  74
  75                                 for (int i = 0; i < num_rectangles; i++) {
  76                                         if (rect[i*4+0] == x &&
  77                                             rect[i*4+1] == y) {
  78                                                 excluded = true;
  79                                                 break;
  80                                         }
  81                                 }
  82                                 if (excluded)
  83                                         subresult &= piglit_probe_pixel_rgba(x, y, blue);
  84                                 else
  85                                         subresult &= piglit_probe_pixel_rgba(x, y, green);
  86                         }
  87                 }
  88                 piglit_report_subtest_result(subresult ? PIGLIT_PASS : PIGLIT_FAIL,
  89                                              "exclusive, num rectangles = %u", num_rectangles);
  90                 pass &= subresult;
  91         }
  92
  93         for (int num_rectangles = 1; num_rectangles <= max_rectangles; num_rectangles++) {
  94                 glClearColor(0, 0, 1, 1);
  95                 glClear(GL_COLOR_BUFFER_BIT);
  96
  97                 glWindowRectanglesEXT(GL_INCLUSIVE_EXT, num_rectangles, rect);
  98                 glUniform4fv(color, 1, green);
  99                 glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 100
 101                 bool subresult = true;
 102
 103                 for (int y = 0; y < 20; y++) {
 104                         for (int x = 0; x < 20; x++) {
 105                                 bool included = false;
 106
 107                                 for (int i = 0; i < num_rectangles; i++) {
 108                                         if (rect[i*4+0] == x &&
 109                                             rect[i*4+1] == y) {
 110                                                 included = true;
 111                                                 break;
 112                                         }
 113                                 }
 114                                 if (included)
 115                                         subresult &= piglit_probe_pixel_rgba(x, y, green);
 116                                 else
 117                                         subresult &= piglit_probe_pixel_rgba(x, y, blue);
 118                         }
 119                 }
 120                 piglit_report_subtest_result(subresult ? PIGLIT_PASS : PIGLIT_FAIL,
 121                                              "inclusive, num rectangles = %u", num_rectangles);
 122                 pass &= subresult;
 123         }
 124
 125         glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
 126         glBlitFramebuffer(0, 0, 20, 20,
 127                           0, 0, piglit_width, piglit_height,
 128                           GL_COLOR_BUFFER_BIT, GL_NEAREST);
 129
 130         piglit_present_results();
 131
 132         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 133 }
 134
 135 void
 136 piglit_init(int argc, char **argv)
 137 {
 138         static const float verts[4][4] = {
 139                 /* x   y   z   w */
 140                 { -1, -1, 1.0, 1 },
 141                 {  1, -1, 1.0, 1 },
 142                 { -1,  1, 0.1, 1 },
 143                 {  1,  1, 0.1, 1 }
 144         };
 145
 146         GLuint bo, rb;
 147
 148         piglit_require_extension("GL_EXT_window_rectangles");
 149         glGetIntegerv(GL_MAX_WINDOW_RECTANGLES_EXT, &max_rectangles);
 150         assert(max_rectangles <= 8);
 151
 152         prog = piglit_build_simple_program(
 153 #ifdef PIGLIT_USE_OPENGL
 154                         "#version 130\n"
 155 #else
 156                         "#version 300 es\n"
 157                         "precision highp float;\n"
 158 #endif
 159                         "in vec4 piglit_vertex;\n"
 160                         "void main() { gl_Position = piglit_vertex; }\n",
 161
 162 #ifdef PIGLIT_USE_OPENGL
 163                         "#version 130\n"
 164 #else
 165                         "#version 300 es\n"
 166                         "precision highp float;\n"
 167 #endif
 168                         "out vec4 col;\n"
 169                         "uniform vec4 color;\n"
 170                         "void main() { col = color; }\n");
 171         color = glGetUniformLocation(prog, "color");
 172
 173         glEnableVertexAttribArray(0);
 174         glGenBuffers(1, &bo);
 175         glBindBuffer(GL_ARRAY_BUFFER, bo);
 176         glBufferData(GL_ARRAY_BUFFER, sizeof(verts), verts, GL_STATIC_DRAW);
 177         glVertexAttribPointer(glGetAttribLocation(prog, "piglit_vertex"),
 178                               4, GL_FLOAT, GL_FALSE, 0, (GLvoid const *)0);
 179
 180         glGenFramebuffers(1, &fb);
 181         glBindFramebuffer(GL_FRAMEBUFFER, fb);
 182         glGenRenderbuffers(1, &rb);
 183         glBindRenderbuffer(GL_RENDERBUFFER, rb);
 184         glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, 20, 20);
 185         glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
 186                                   GL_RENDERBUFFER, rb);
 187 }