tests/spec/arb_texture_view/texsubimage-layers.c

   1 /*
   2  * Copyright © 2014 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  * Author: Chris Forbes <chrisf@ijw.co.nz>
  24  */
  25
  26 /**
  27  * \file texsubimage-layers.c
  28  * This tests that TexSubImage* into a view behaves correctly when the view
  29  * has a nonzero MinLayer.
  30  */
  31
  32 #include "piglit-util-gl.h"
  33 #include "common.h"
  34
  35 PIGLIT_GL_TEST_CONFIG_BEGIN
  36
  37         config.supports_gl_compat_version = 30;
  38         config.supports_gl_es_version = 31;
  39         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  40         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  41
  42 PIGLIT_GL_TEST_CONFIG_END
  43
  44 enum piglit_result
  45 piglit_display(void)
  46 {
  47         return PIGLIT_FAIL;
  48 }
  49
  50 #define NUM_LAYERS 7
  51 #define VIEW_MIN_LAYER 2
  52 #define VIEW_NUM_LAYERS 3
  53 #define TEX_SIZE 64
  54
  55 void
  56 piglit_init(int argc, char **argv)
  57 {
  58         GLuint tex, view;
  59         GLuint buffer;
  60         int i, j;
  61         bool use_pbo = false;
  62         bool pass = true;
  63
  64 #ifdef PIGLIT_USE_OPENGL
  65         piglit_require_extension("GL_ARB_texture_view");
  66 #else
  67         piglit_require_extension("GL_OES_texture_view");
  68 #endif
  69
  70         for (i = 1; i < argc; ++i) {
  71                 if (strcmp(argv[i], "pbo") == 0) {
  72                         piglit_require_extension("GL_ARB_pixel_buffer_object");
  73                         use_pbo = true;
  74                 }
  75         }
  76
  77         /* build a 2d array texture; no mip levels */
  78         glGenTextures(1, &tex);
  79         glBindTexture(GL_TEXTURE_2D_ARRAY, tex);
  80         glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1,
  81                 GL_RGBA8, TEX_SIZE, TEX_SIZE, NUM_LAYERS);
  82
  83         if (use_pbo) {
  84                 glGenBuffers(1, &buffer);
  85                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer);
  86         }
  87
  88         for (i=0; i < NUM_LAYERS; i++) {
  89                 GLubyte *pixels = create_solid_image(TEX_SIZE, TEX_SIZE,
  90                                                      1, 4, i);
  91                 if (!pixels) {
  92                         printf("Allocation failure for layer %d\n", i);
  93                         piglit_report_result(PIGLIT_FAIL);
  94                 }
  95
  96                 if (use_pbo) {
  97                         glBufferData(GL_PIXEL_UNPACK_BUFFER, TEX_SIZE * TEX_SIZE * 4,
  98                                      pixels, GL_STREAM_DRAW);
  99                 }
 100                 glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0,
 101                                 0, 0, i, TEX_SIZE, TEX_SIZE, 1,
 102                                 GL_RGBA, GL_UNSIGNED_BYTE, use_pbo ? NULL : pixels);
 103                 free(pixels);
 104         }
 105
 106         /* create a view to a subset of the layers */
 107         glGenTextures(1, &view);
 108         glTextureView(view, GL_TEXTURE_2D_ARRAY, tex, GL_RGBA8,
 109                       0, 1, VIEW_MIN_LAYER, VIEW_NUM_LAYERS);
 110
 111         if (!piglit_check_gl_error(GL_NO_ERROR))
 112                 piglit_report_result(PIGLIT_FAIL);
 113
 114         /* upload through the view */
 115         glBindTexture(GL_TEXTURE_2D_ARRAY, view);
 116         for (i = 0; i < VIEW_NUM_LAYERS; i++) {
 117                 GLubyte *pixels = create_solid_image(TEX_SIZE, TEX_SIZE,
 118                                                      1, 4, i + NUM_LAYERS);
 119                 if (!pixels) {
 120                         printf("Allocation failure for view layer %d\n", i);
 121                         piglit_report_result(PIGLIT_FAIL);
 122                 }
 123
 124                 if (use_pbo) {
 125                         glBufferData(GL_PIXEL_UNPACK_BUFFER, TEX_SIZE * TEX_SIZE * 4,
 126                                      pixels, GL_STREAM_DRAW);
 127                 }
 128                 glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0,
 129                                 0, 0, i, TEX_SIZE, TEX_SIZE, 1,
 130                                 GL_RGBA, GL_UNSIGNED_BYTE, use_pbo ? NULL : pixels);
 131                 free(pixels);
 132         }
 133
 134         if (!piglit_check_gl_error(GL_NO_ERROR))
 135                 piglit_report_result(PIGLIT_FAIL);
 136
 137         /* bind the underlying texture and readback */
 138         glBindTexture(GL_TEXTURE_2D_ARRAY, tex);
 139         for (i = 0; i < NUM_LAYERS; i++) {
 140                 /* the layers inside the view should have been replaced.
 141                  * everything else should be untouched.
 142                  */
 143
 144                 float expected_color[4];
 145                 int color_index = i;
 146                 if (i >= VIEW_MIN_LAYER && i < VIEW_MIN_LAYER + VIEW_NUM_LAYERS) {
 147                         color_index = i + NUM_LAYERS - VIEW_MIN_LAYER;
 148                 }
 149
 150                 printf("Testing layer %d\n", i);
 151
 152                 for (j = 0; j < 4; j++)
 153                         expected_color[j] = Colors[color_index][j] / 255.0f;
 154
 155                 pass = piglit_probe_texel_volume_rgba(GL_TEXTURE_2D_ARRAY, 0,
 156                                                       0, 0, i,
 157                                                       TEX_SIZE, TEX_SIZE, 1,
 158                                                       expected_color) && pass;
 159         }
 160
 161         if (use_pbo)
 162                 glDeleteBuffers(1, &buffer);
 163
 164         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 165 }