tests/spec/gl-3.0/vertexattribipointer.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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * Test OpenGL 3.0's glVertexAttribIPointer function with all combinations
  26  * of types and sizes.
  27  */
  28
  29 #include "piglit-util-gl.h"
  30
  31 PIGLIT_GL_TEST_CONFIG_BEGIN
  32         config.supports_gl_compat_version = 30;
  33         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  34         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  35 PIGLIT_GL_TEST_CONFIG_END
  36
  37
  38 /**
  39  * We'll pass in the same data for both the signed and unsigned vertex
  40  * attributes and the signed/unsigned expected value.
  41  */
  42 static const char *vertShaderText =
  43         "#version 130 \n"
  44         "uniform ivec4 expected_i; \n"
  45         "in ivec4 attr_i; \n"
  46         "uniform uvec4 expected_u; \n"
  47         "in uvec4 attr_u; \n"
  48         "out vec4 color; \n"
  49         " \n"
  50         "void main() \n"
  51         "{ \n"
  52         "   gl_Position = gl_Vertex; \n"
  53         "   if (attr_i == expected_i && attr_u == expected_u) \n"
  54         "      color = vec4(0, 1, 0, 0); // good! \n"
  55         "   else \n"
  56         "      color = vec4(1, 0, 0, 0); // bad! \n"
  57         "} \n";
  58
  59 static const char *fragShaderText =
  60         "#version 130 \n"
  61         "in vec4 color;\n"
  62         "void main()\n"
  63         "{ \n"
  64         "   gl_FragColor = color; \n"
  65         "} \n";
  66
  67
  68 static const GLubyte ubyte4_data[] = { 100, 0, 200, 255 };
  69 static const GLbyte byte4_data[] = { 50, 0, -25, -50 };
  70 static const GLushort ushort4_data[] = { 16000, 0, 32000, 65535 };
  71 static const GLshort short4_data[] = { 2000, 0, -4000, -32010 };
  72 static const GLuint uint4_data[] = { 10000000, 0, 20000000, 80000020 };
  73 static const GLint int4_data[] = { 10000000, 0, -20000000, -40000020 };
  74
  75 static GLuint Prog;
  76 static GLint ExpectedUniform_i, ExpectedUniform_u;
  77 static GLint Attr_i, Attr_u;
  78
  79
  80 /*
  81  * Test glVertexAttribIArray(type, size, normalized)
  82  */
  83 static bool
  84 test_array(GLenum type, GLuint size)
  85 {
  86         static const GLfloat verts[4][2] = {
  87                 { -1.0, -1.0 },
  88                 { 1.0, -1.0 },
  89                 { 1.0, 1.0 },
  90                 { -1.0, 1.0 }
  91         };
  92         static const GLfloat green[4] = { 0.0, 1.0, 0.0, 0.0 };
  93         GLubyte attr_buffer[4 * 4 * sizeof(GLuint)];
  94         int typeSize;
  95         const void *data;
  96         GLint expected[4];
  97         int i, p;
  98
  99         switch (type) {
 100         case GL_BYTE:
 101                 typeSize = sizeof(GLbyte);
 102                 data = byte4_data;
 103                 for (i = 0; i < 4; i++)
 104                         expected[i] = byte4_data[i];
 105                 break;
 106         case GL_UNSIGNED_BYTE:
 107                 typeSize = sizeof(GLubyte);
 108                 data = ubyte4_data;
 109                 for (i = 0; i < 4; i++)
 110                         expected[i] = ubyte4_data[i];
 111                 break;
 112         case GL_SHORT:
 113                 typeSize = sizeof(GLshort);
 114                 data = short4_data;
 115                 for (i = 0; i < 4; i++)
 116                         expected[i] = short4_data[i];
 117                 break;
 118         case GL_UNSIGNED_SHORT:
 119                 typeSize = sizeof(GLushort);
 120                 data = ushort4_data;
 121                 for (i = 0; i < 4; i++)
 122                         expected[i] = ushort4_data[i];
 123                 break;
 124         case GL_INT:
 125                 typeSize = sizeof(GLint);
 126                 data = int4_data;
 127                 for (i = 0; i < 4; i++)
 128                         expected[i] = int4_data[i];
 129                 break;
 130         case GL_UNSIGNED_INT:
 131                 typeSize = sizeof(GLuint);
 132                 data = uint4_data;
 133                 for (i = 0; i < 4; i++)
 134                         expected[i] = uint4_data[i];
 135                 break;
 136         default:
 137                 assert(0);
 138                 typeSize = sizeof(GLint);
 139                 data = NULL;
 140         }
 141
 142         /* set unused components to defaults */
 143         switch (size) {
 144         case 1:
 145                 expected[1] = 0;
 146         case 2:
 147                 expected[2] = 0;
 148         case 3:
 149                 expected[3] = 1;
 150         }
 151
 152         /* Setup the attribute buffer by making four copies of the
 153          * test's array data (for the four vertices).
 154          */
 155         {
 156                 int i, sz = typeSize * size;
 157                 for (i = 0; i < 4; i++) {
 158                         memcpy(attr_buffer + i * sz, data, sz);
 159                 }
 160         }
 161
 162         /* We set up both the signed and unsigned int attribute arrays to
 163          * point to the same vertex data.
 164          */
 165         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, verts);
 166         glEnableVertexAttribArray(0);
 167         glVertexAttribIPointer(Attr_i, size, type, 0, attr_buffer);
 168         glEnableVertexAttribArray(Attr_i);
 169         glVertexAttribIPointer(Attr_u, size, type, 0, attr_buffer);
 170         glEnableVertexAttribArray(Attr_u);
 171
 172         glViewport(0, 0, piglit_width, piglit_height);
 173         glClearColor(1,0,0,0);
 174         glClear(GL_COLOR_BUFFER_BIT);
 175
 176         /* The same value is expected for the signed and unsigned attributes */
 177         glUniform4iv(ExpectedUniform_i, 1, expected);
 178         glUniform4uiv(ExpectedUniform_u, 1, (const GLuint *) expected);
 179
 180         glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
 181
 182         glDisableVertexAttribArray(0);
 183         glDisableVertexAttribArray(Attr_i);
 184         glDisableVertexAttribArray(Attr_u);
 185
 186         p = piglit_probe_pixel_rgba(piglit_width / 2, piglit_height / 2,
 187                                     green);
 188         if (!p) {
 189                 printf("Test %s[%d] failed\n",
 190                        piglit_get_gl_enum_name(type), size);
 191                 fflush(stdout);
 192         }
 193
 194         piglit_present_results();
 195
 196         return p;
 197 }
 198
 199
 200 enum piglit_result
 201 piglit_display(void)
 202 {
 203         static const GLenum types[] = {
 204                 GL_BYTE,
 205                 GL_UNSIGNED_BYTE,
 206                 GL_SHORT,
 207                 GL_UNSIGNED_SHORT,
 208                 GL_INT,
 209                 GL_UNSIGNED_INT
 210         };
 211         bool pass = true;
 212         int t, size;
 213
 214         for (t = 0; t < ARRAY_SIZE(types); t++) {
 215                 for (size = 1; size <= 4; size++) {
 216                         pass = test_array(types[t], size) && pass;
 217                 }
 218         }
 219
 220         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 221 }
 222
 223
 224 void
 225 piglit_init(int argc, char **argv)
 226 {
 227         piglit_require_gl_version(30);
 228
 229         Prog = piglit_build_simple_program(vertShaderText, fragShaderText);
 230         if (!Prog) {
 231                 printf("Failed to compile/link program\n");
 232                 piglit_report_result(PIGLIT_FAIL);
 233         }
 234
 235         glUseProgram(Prog);
 236
 237         Attr_i = glGetAttribLocation(Prog, "attr_i");
 238         Attr_u = glGetAttribLocation(Prog, "attr_u");
 239         ExpectedUniform_i = glGetUniformLocation(Prog, "expected_i");
 240         ExpectedUniform_u = glGetUniformLocation(Prog, "expected_u");
 241 }