tests/spec/intel_blackhole_render/blackhole_blit.c

   1 /*
   2  * Copyright © 2019 Intel Corporation
   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 /** @file blackhole_blit.c
  26  *
  27  * Verifies that with GL_INTEL_black_render enabled, blit operations
  28  * have no effect.
  29  */
  30
  31 #include "piglit-util-gl.h"
  32 #include "piglit-matrix.h"
  33
  34 PIGLIT_GL_TEST_CONFIG_BEGIN
  35
  36 #if defined(PIGLIT_USE_OPENGL)
  37         config.supports_gl_core_version = 42;
  38 #elif defined(PIGLIT_USE_OPENGL_ES2) || defined(PIGLIT_USE_OPENGL_ES3)
  39         config.supports_gl_es_version = 20;
  40 #endif
  41
  42         config.window_width = 400;
  43         config.window_height = 400;
  44         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  45
  46 PIGLIT_GL_TEST_CONFIG_END
  47
  48 static enum piglit_result
  49 run(void)
  50 {
  51         float delta = 1.01 / piglit_width;
  52         GLuint prog, fb, fb_tex;
  53
  54         glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
  55         glBindFramebufferEXT(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
  56
  57         glClearColor(0.0, 0.0, 1.0, 1.0);
  58         glClear(GL_COLOR_BUFFER_BIT);
  59
  60         glGenFramebuffersEXT(1, &fb);
  61         glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER, fb);
  62         glBindFramebufferEXT(GL_READ_FRAMEBUFFER, fb);
  63
  64         glCreateTextures(GL_TEXTURE_2D, 1, &fb_tex);
  65         glBindTexture(GL_TEXTURE_2D, fb_tex);
  66         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8,
  67                      piglit_width, piglit_height, 0,
  68                      GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  69         glFramebufferTexture2DEXT(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
  70                                   GL_TEXTURE_2D, fb_tex, 0);
  71
  72         /* This atom should be disabled by default */
  73         if (glIsEnabled(GL_BLACKHOLE_RENDER_INTEL))
  74                 return PIGLIT_FAIL;
  75
  76         prog = piglit_build_simple_program(
  77 #if defined(PIGLIT_USE_OPENGL)
  78                 "#version 330\n"
  79                 "in vec4 piglit_vertex;\n"
  80 #elif defined(PIGLIT_USE_OPENGL_ES2) || defined(PIGLIT_USE_OPENGL_ES3)
  81                 "#version 100\n"
  82                 "attribute vec4 piglit_vertex;\n"
  83 #endif
  84                 "void main()\n"
  85                 "{\n"
  86                 "  gl_Position = piglit_vertex;\n"
  87                 "}\n",
  88 #if defined(PIGLIT_USE_OPENGL)
  89                 "#version 330\n"
  90 #elif defined(PIGLIT_USE_OPENGL_ES2) || defined(PIGLIT_USE_OPENGL_ES3)
  91                 "#version 100\n"
  92 #endif
  93                 "void main()\n"
  94                 "{\n"
  95                 "  gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
  96                 "}\n");
  97         if (!prog)
  98                 piglit_report_result(PIGLIT_FAIL);
  99
 100         glViewport(0, 0, piglit_width, piglit_height);
 101
 102         glClearColor(0.0, 0.0, 0.0, 0.0);
 103
 104         glUseProgram(prog);
 105
 106         GLuint vao;
 107         glGenVertexArrays(1, &vao);
 108         glBindVertexArray(vao);
 109
 110         GLuint vbo;
 111         float vertices[3][2] = {
 112                 { -0.5, -1 + delta, },
 113                 { 0, 0.8, },
 114                 { 0.5, -1 + delta, },
 115         };
 116         glGenBuffers(1, &vbo);
 117         glBindBuffer(GL_ARRAY_BUFFER, vbo);
 118         glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
 119         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), NULL);
 120         glEnableVertexAttribArray(0);
 121
 122         glDisable(GL_BLACKHOLE_RENDER_INTEL);
 123         glClear(GL_COLOR_BUFFER_BIT);
 124         glDrawArrays(GL_TRIANGLES, 0, 3);
 125
 126         if(!piglit_check_gl_error(GL_NO_ERROR))
 127                 return PIGLIT_FAIL;
 128
 129         const float shader_expected[] = { 1.0, 0.0, 0.0, 1.0 };
 130         if (!piglit_probe_pixel_rgba(piglit_width / 2,
 131                                      piglit_height / 2,
 132                                      shader_expected))
 133                 return PIGLIT_FAIL;
 134
 135         piglit_present_results();
 136
 137         glClearColor(0.0, 1.0, 0.0, 1.0);
 138         glClear(GL_COLOR_BUFFER_BIT);
 139
 140         const float clear_expected[] = { 0.0, 1.0, 0.0, 1.0 };
 141         if (!piglit_probe_pixel_rgba(piglit_width / 2,
 142                                      piglit_height / 2,
 143                                      clear_expected))
 144                 return PIGLIT_FAIL;
 145
 146         piglit_present_results();
 147
 148         glBindFramebuffer(GL_READ_FRAMEBUFFER, fb);
 149         glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
 150
 151         glEnable(GL_BLACKHOLE_RENDER_INTEL);
 152
 153         if (!glIsEnabled(GL_BLACKHOLE_RENDER_INTEL))
 154                 return PIGLIT_FAIL;
 155
 156         glBlitFramebuffer(0, 0, piglit_width, piglit_height,
 157                           0, 0, piglit_width, piglit_height,
 158                           GL_COLOR_BUFFER_BIT, GL_LINEAR);
 159
 160         glDisable(GL_BLACKHOLE_RENDER_INTEL);
 161
 162         if(!piglit_check_gl_error(GL_NO_ERROR))
 163                 return PIGLIT_FAIL;
 164
 165         glBindFramebuffer(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
 166
 167         /* Blitting into piglit_winsys_fbo was dropped because of the
 168          * blackhole state, expect the first clear color.
 169          */
 170         const float blackhole_expected[] = { 0.0, 0.0, 1.0, 1.0 };
 171         if (!piglit_probe_pixel_rgba(piglit_width / 2,
 172                                      piglit_height / 2,
 173                                      blackhole_expected))
 174                 return PIGLIT_FAIL;
 175
 176         piglit_present_results();
 177
 178         glBindFramebuffer(GL_READ_FRAMEBUFFER, fb);
 179         glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
 180
 181         glBlitFramebuffer(0, 0, piglit_width, piglit_height,
 182                           0, 0, piglit_width, piglit_height,
 183                           GL_COLOR_BUFFER_BIT, GL_LINEAR);
 184
 185         glBindFramebuffer(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
 186
 187         /* Now the clear color that landed in fb should have been
 188          * copied into piglit_winsys_fbo.
 189          */
 190         if (!piglit_probe_pixel_rgba(piglit_width / 2,
 191                                      piglit_height / 2,
 192                                      clear_expected))
 193                 return PIGLIT_FAIL;
 194
 195         return PIGLIT_PASS;
 196 }
 197
 198 enum piglit_result
 199 piglit_display(void)
 200 {
 201         enum piglit_result result = run();
 202
 203         glDisable(GL_BLACKHOLE_RENDER_INTEL);
 204
 205         return result;
 206 }
 207
 208 void piglit_init(int argc, char **argv)
 209 {
 210         piglit_require_extension("GL_INTEL_blackhole_render");
 211 }