tests/shaders/vp-address-01.c

   1 /*
   2  * Copyright © 2009 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 vp-address-01.c
  26  * Validate address registers with various constant offsets.
  27  *
  28  * \author Ian Romanick <ian.d.romanick@intel.com>
  29  */
  30
  31 #include "piglit-util-gl.h"
  32
  33 static const GLfloat attrib[] = {
  34         1.0,
  35         2.0,
  36         0.0,
  37         -1.0,
  38         -2.0
  39 };
  40
  41 #define TEST_ROWS  1
  42 #define TEST_COLS  ARRAY_SIZE(attrib)
  43 #define BOX_SIZE   32
  44
  45 PIGLIT_GL_TEST_CONFIG_BEGIN
  46
  47         config.supports_gl_compat_version = 10;
  48
  49         config.window_width = (((BOX_SIZE+1)*TEST_COLS)+1);
  50         config.window_height = (((BOX_SIZE+1)*TEST_ROWS)+1);
  51         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  52
  53 PIGLIT_GL_TEST_CONFIG_END
  54
  55 static const char vertex_source_template[] =
  56         "!!ARBvp1.0\n"
  57         "PARAM  colors[] = { program.env[0..3] };\n"
  58         "ADDRESS        A0;\n"
  59         "\n"
  60         "ARL    A0.x, vertex.attrib[1].x;\n"
  61         "MOV    result.color, colors[A0.x %c %u];\n"
  62         PIGLIT_VERTEX_PROGRAM_MVP_TRANSFORM
  63         "END\n"
  64         ;
  65
  66
  67 /**
  68  * \name Handles to programs.
  69  */
  70 /*@{*/
  71 static GLint progs[TEST_COLS];
  72 /*@}*/
  73
  74
  75 enum piglit_result
  76 piglit_display(void)
  77 {
  78         static const GLfloat color[4] = { 0.0, 1.0, 0.0, 1.0 };
  79         static const GLfloat good_color[4] = { 0.0, 1.0, 0.0, 1.0 };
  80         static const GLfloat bad_color[4] = { 1.0, 0.0, 0.0, 1.0 };
  81         enum piglit_result result = PIGLIT_PASS;
  82         unsigned i;
  83
  84         glClear(GL_COLOR_BUFFER_BIT);
  85
  86         glProgramEnvParameter4fvARB(GL_VERTEX_PROGRAM_ARB, 0, bad_color);
  87         glProgramEnvParameter4fvARB(GL_VERTEX_PROGRAM_ARB, 1, color);
  88         glProgramEnvParameter4fvARB(GL_VERTEX_PROGRAM_ARB, 2, bad_color);
  89         glProgramEnvParameter4fvARB(GL_VERTEX_PROGRAM_ARB, 3, bad_color);
  90
  91         for (i = 0; i < ARRAY_SIZE(progs); i++) {
  92                 const int x = 1 + (i * (BOX_SIZE + 1));
  93
  94                 glBindProgramARB(GL_VERTEX_PROGRAM_ARB, progs[i]);
  95
  96                 glVertexAttrib1fARB(1, attrib[i]);
  97
  98                 piglit_draw_rect(x, 1, BOX_SIZE, BOX_SIZE);
  99
 100                 if (!piglit_probe_pixel_rgb(x + (BOX_SIZE / 2),
 101                                             1 + (BOX_SIZE / 2),
 102                                             good_color)) {
 103                         if (! piglit_automatic)
 104                                 printf("shader %u failed with attribute "
 105                                        "%.1f\n", i, attrib[i]);
 106
 107                         result = PIGLIT_FAIL;
 108                 }
 109         }
 110
 111         piglit_present_results();
 112         return result;
 113 }
 114
 115
 116 void
 117 piglit_init(int argc, char **argv)
 118 {
 119         GLint max_address_registers;
 120         unsigned i;
 121
 122         (void) argc;
 123         (void) argv;
 124
 125         piglit_require_vertex_program();
 126         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 127
 128         glGetProgramivARB(GL_VERTEX_PROGRAM_ARB,
 129                           GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB,
 130                           & max_address_registers);
 131         if (max_address_registers == 0) {
 132                 /* we have to have at least one address register */
 133                 if (! piglit_automatic)
 134                         printf("GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB == 0\n");
 135                 piglit_report_result(PIGLIT_FAIL);
 136         }
 137
 138         for (i = 0; i < ARRAY_SIZE(progs); i++) {
 139                 char shader_source[1024];
 140                 int offset[2];
 141                 char direction[2];
 142
 143                 /* We want the constant offset in the instruction plus the
 144                  * value read from the attribute to be 1.
 145                  */
 146                 offset[0] = 1 - (int) attrib[i];
 147
 148                 if (offset[0] < 0) {
 149                         direction[0] = '-';
 150                         offset[0] = -offset[0];
 151                 } else {
 152                         direction[0] = '+';
 153                 }
 154
 155                 snprintf(shader_source, sizeof(shader_source),
 156                          vertex_source_template,
 157                          direction[0], offset[0]);
 158
 159                 progs[i] = piglit_compile_program(GL_VERTEX_PROGRAM_ARB,
 160                                                   shader_source);
 161         }
 162
 163         glEnable(GL_VERTEX_PROGRAM_ARB);
 164
 165         glClearColor(0.5, 0.5, 0.5, 1.0);
 166 }