tests/spec/arb_texture_view/cubemap-view.c

   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 Nvidia OpenGL drivers, if we create a TextureView from a cubemap
  26  * face other than GL_TEXTURE_CUBE_MAP_POSITIVE_X and attach it to an FBO,
  27  * we cannot read back the correct data in the original cubemap texture
  28  * by glGetTexImage() with a system memory pointer right after a clearing
  29  * or drawing call.
  30  *
  31  * Known to be
  32  *      -- Present in : Nvidia GTX 650, driver - 325.15
  33  *      -- Fixed in   :
  34  */
  35
  36
  37 #include "piglit-util-gl.h"
  38
  39 PIGLIT_GL_TEST_CONFIG_BEGIN
  40
  41         config.supports_gl_core_version = 32;
  42         config.supports_gl_compat_version = 32;
  43
  44         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  45         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  46
  47 PIGLIT_GL_TEST_CONFIG_END
  48
  49 #define WIDTH 32
  50 #define HEIGHT 32
  51 #define LEVELS 6
  52 #define COLOR_RED        0xFF0000FF
  53 #define COLOR_GREEN      0x00FF00FF
  54 #define COLOR_BLUE       0x0000FFFF
  55 #define COLOR_CYAN       0x00FFFFFF
  56 #define COLOR_MAGENTA    0xFF00FFFF
  57 #define COLOR_YELLOW     0xFFFF00FF
  58 #define COLOR_GRAY       0x7F7F7FFF
  59 #define CLEAR_COLOR      0x000033FF
  60 #define NUM_VERTICES     4
  61 #define VIEW_LEVEL       3
  62 #define NUM_FACES        6
  63
  64 static bool
  65 test_cubemap_view(void)
  66 {
  67         const GLuint white = 0xffffffff;
  68         const unsigned int colors[LEVELS] = {COLOR_RED, COLOR_GREEN,
  69                                              COLOR_BLUE, COLOR_CYAN,
  70                                              COLOR_CYAN, COLOR_MAGENTA};
  71         const unsigned int numPixels = WIDTH * HEIGHT;
  72         GLuint texData[WIDTH * HEIGHT];
  73         GLuint i, cubeTex, view, fbo, f;
  74
  75         for (i = 0; i < numPixels; ++i) {
  76                 texData[i] = white;
  77         }
  78
  79         /* Create a cubemap textures */
  80         glGenTextures(1, &cubeTex);
  81         glActiveTexture(GL_TEXTURE0);
  82         glBindTexture(GL_TEXTURE_CUBE_MAP, cubeTex);
  83         glTexStorage2D(GL_TEXTURE_CUBE_MAP, 1, GL_RGBA8, WIDTH, HEIGHT);
  84
  85         for (f = 0; f < NUM_FACES; f++) {
  86                 for (i = 0; i < numPixels; i++) {
  87                         texData[i] = colors[f];
  88                 }
  89
  90                 glTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + f,
  91                                 0, 0, 0, WIDTH, HEIGHT,
  92                                 GL_RGBA, GL_UNSIGNED_INT_8_8_8_8,
  93                                 texData);
  94         }
  95
  96         /* Create a texture view from the negative X face of the cubemap */
  97         glGenTextures(1, &view);
  98         glTextureView(view, GL_TEXTURE_2D, cubeTex, GL_RGBA8,
  99                       0, 1, 1 /* -X face */, 1);
 100         glBindTexture(GL_TEXTURE_2D, view);
 101         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
 102
 103         if (!piglit_check_gl_error(GL_NO_ERROR))
 104                 return false;
 105
 106         /* Setup the FBO */
 107         glGenFramebuffers(1, &fbo);
 108         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 109         glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
 110                                GL_TEXTURE_2D, view, 0);
 111         if (glCheckFramebufferStatus(GL_FRAMEBUFFER) !=
 112             GL_FRAMEBUFFER_COMPLETE) {
 113                 printf("incomplete framebuffer at line %d\n", __LINE__);
 114                 return false;
 115         }
 116
 117         glDrawBuffer(GL_COLOR_ATTACHMENT0);
 118         if (glCheckFramebufferStatus(GL_FRAMEBUFFER) !=
 119             GL_FRAMEBUFFER_COMPLETE) {
 120                 printf("incomplete framebuffer at line %d\n", __LINE__);
 121                 return false;
 122         }
 123
 124         /* Clear and draw */
 125         glViewport(0, 0, WIDTH, HEIGHT);
 126         glClearColor(((CLEAR_COLOR >> 24) & 0xFF) / 255.0f,
 127                      ((CLEAR_COLOR >> 16) & 0xFF) / 255.0f,
 128                      ((CLEAR_COLOR >> 8)  & 0xFF) / 255.0f,
 129                      ((CLEAR_COLOR) & 0xFF) / 255.0f);
 130         glClear(GL_COLOR_BUFFER_BIT);
 131
 132         /* Read back */
 133         glPixelStorei(GL_PACK_ROW_LENGTH, WIDTH);
 134         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 135         memset(texData, 0, sizeof(texData));
 136         glGetTexImage(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0,
 137                       GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texData);
 138
 139         if (texData[0] != CLEAR_COLOR) {
 140                 printf("At pixel (0,0) expected 0x%x but found 0x%x\n",
 141                         CLEAR_COLOR, texData[0]);
 142                 /* clean up */
 143                 glDeleteTextures(1, &cubeTex);
 144                 glDeleteTextures(1, &view);
 145                 glDeleteFramebuffers(1, &fbo);
 146                 return false;
 147         }
 148
 149         if (!piglit_check_gl_error(GL_NO_ERROR))
 150                 return false;
 151
 152         glDeleteTextures(1, &cubeTex);
 153         glDeleteTextures(1, &view);
 154         glDeleteFramebuffers(1, &fbo);
 155         return true;
 156 }
 157
 158
 159 enum piglit_result
 160 piglit_display(void)
 161 {
 162         bool pass = test_cubemap_view();
 163         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 164 }
 165
 166
 167 void
 168 piglit_init(int argc, char **argv)
 169 {
 170         piglit_require_extension("GL_ARB_texture_storage");
 171         piglit_require_extension("GL_ARB_texture_view");
 172 }