tests/spec/arb_direct_state_access/texture-buffer.c

   1 /*
   2  * Copyright © 2013, 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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /** @file texture-buffer.c
  25  *
  26  * Tests that glBufferData() synchronizes correctly with TBO rendering.
  27  *
  28  * Caught a bug in the i965 driver after a core Mesa refactor.
  29  *
  30  * Adapted to test glTextureBuffer by Laura Ekstrand (December 2014).
  31  */
  32
  33 #include "piglit-util-gl.h"
  34
  35 PIGLIT_GL_TEST_CONFIG_BEGIN
  36         config.supports_gl_core_version = 31;
  37
  38         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE |
  39                                PIGLIT_GL_VISUAL_RGBA;
  40         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  41 PIGLIT_GL_TEST_CONFIG_END
  42
  43 static const char vs_source[] =
  44         "#version 140\n"
  45         "in vec4 piglit_vertex;\n"
  46         "void main()\n"
  47         "{\n"
  48         "       gl_Position = piglit_vertex;\n"
  49         "}\n"
  50         ;
  51
  52 static const char fs_source[] =
  53         "#version 140\n"
  54         "uniform samplerBuffer s;\n"
  55         "void main()\n"
  56         "{\n"
  57         "       gl_FragColor = texelFetch(s, 0);\n"
  58         "}\n"
  59         ;
  60
  61 static GLuint prog;
  62 static GLuint tex;
  63 static GLuint bo;
  64
  65 enum piglit_result
  66 piglit_display(void)
  67 {
  68
  69         bool pass = true;
  70         static const float green[] = {0, 1, 0, 0};
  71         static const float blue[] =  {0, 0, 1, 0};
  72         static const uint8_t g_rgba8[] = {0x00, 0xff, 0x00, 0x00};
  73         static const uint8_t b_rgba8[] = {0x00, 0x00, 0xff, 0x00};
  74
  75         glBufferData(GL_TEXTURE_BUFFER, sizeof(g_rgba8), g_rgba8,
  76                      GL_STREAM_DRAW);
  77         piglit_draw_rect(-1, -1, 1, 2);
  78         glBufferData(GL_TEXTURE_BUFFER, sizeof(b_rgba8), b_rgba8,
  79                      GL_STREAM_DRAW);
  80         piglit_draw_rect(0, -1, 1, 2);
  81
  82         pass = piglit_probe_rect_rgba(0, 0,
  83                                       piglit_width / 2, piglit_height,
  84                                       green)
  85                 && pass;
  86         pass = piglit_probe_rect_rgba(piglit_width / 2, 0,
  87                                       piglit_width / 2, piglit_height,
  88                                       blue)
  89                 && pass;
  90
  91         piglit_present_results();
  92
  93         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  94 }
  95
  96 void
  97 piglit_init(int argc, char **argv)
  98 {
  99         piglit_require_extension("GL_ARB_direct_state_access");
 100
 101         prog = piglit_build_simple_program(vs_source, fs_source);
 102         glUseProgram(prog);
 103
 104         glGenBuffers(1, &bo);
 105         glBindBuffer(GL_TEXTURE_BUFFER, bo);
 106
 107         glCreateTextures(GL_TEXTURE_BUFFER, 1, &tex);
 108         glTextureBuffer(tex, GL_RGBA8, bo);
 109         glBindTextureUnit(0, tex);
 110 }