tests/shaders/sso-uniforms-02.c

   1 /*
   2  * Copyright © 2010 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 /**
  25  * \file sso-uniforms-01.c
  26  * Test setting uniform values with separate shader objects
  27  *
  28  * Creates two shader programs with a uniform named "color".  In each shader
  29  * the uniform has differing types.  The shaders are used, and the two
  30  * instances of the "color" uniform is combined to produce a result.
  31  *
  32  * \author Ian Romanick <ian.d.romanick@intel.com>
  33  */
  34 #include "piglit-util-gl.h"
  35
  36 PIGLIT_GL_TEST_CONFIG_BEGIN
  37
  38         config.supports_gl_compat_version = 10;
  39
  40         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  41
  42 PIGLIT_GL_TEST_CONFIG_END
  43
  44 static const char vs_text[] =
  45         "uniform vec4 color;\n"
  46         "void main() { gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; "
  47         "gl_TexCoord[0] = color; }";
  48
  49 static const char fs_text[] =
  50         "uniform int color;\n"
  51         "void main() { gl_FragColor = gl_TexCoord[0] * float(color); }";
  52
  53 static GLuint prog[2];
  54
  55 enum piglit_result
  56 piglit_display(void)
  57 {
  58         static const float green[3] = { 0.0, 1.0, 0.0 };
  59         static const float blue[3]  = { 0.0, 0.0, 1.0 };
  60         enum piglit_result result = PIGLIT_PASS;
  61
  62         glClear(GL_COLOR_BUFFER_BIT);
  63         glColor3fv(blue);
  64
  65         /* Bind the separately linked vertex shader and the separately linked
  66          * fragment shader using the new interfaces.  This should produce a
  67          * green box.
  68          */
  69         glUseShaderProgramEXT(GL_VERTEX_SHADER, prog[0]);
  70         glUseShaderProgramEXT(GL_FRAGMENT_SHADER, prog[1]);
  71         piglit_draw_rect(10, 10, 10, 10);
  72         if (!piglit_probe_pixel_rgb(15, 15, green))
  73                 result = PIGLIT_FAIL;
  74
  75         if (!piglit_automatic)
  76                 piglit_present_results();
  77
  78         return result;
  79 }
  80
  81 void
  82 piglit_init(int argc, char **argv)
  83 {
  84         GLint loc;
  85
  86         piglit_require_gl_version(20);
  87
  88         piglit_require_extension("GL_EXT_separate_shader_objects");
  89
  90         glClearColor(0.3, 0.3, 0.3, 0.0);
  91
  92         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  93
  94         prog[0] = glCreateShaderProgramEXT(GL_VERTEX_SHADER, vs_text);
  95         prog[1] = glCreateShaderProgramEXT(GL_FRAGMENT_SHADER, fs_text);
  96
  97         loc = glGetUniformLocation(prog[0], "color");
  98         if (loc < 0) {
  99                 printf("Unable to get uniform location in separate vertex "
 100                        "shader");
 101                 piglit_report_result(PIGLIT_FAIL);
 102         }
 103
 104         glActiveProgramEXT(prog[0]);
 105         glUniform4f(loc, 0.0, 0.5, 0.0, 0.5);
 106
 107         loc = glGetUniformLocation(prog[1], "color");
 108         if (loc < 0) {
 109                 printf("Unable to get uniform location in separate fragment "
 110                        "shader");
 111                 piglit_report_result(PIGLIT_FAIL);
 112         }
 113
 114         glActiveProgramEXT(prog[1]);
 115         glUniform1i(loc, 2);
 116 }