tests/general/vertex-fallbacks.c

   1 /*
   2  * Copyright (c) 2021 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 DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * This test was designed to exercise as many of the Mesa Gallium draw
  24  * module's vertex pipeline stages as possible, particularly those which
  25  * allocate extra vertex attributes.
  26  *
  27  * It does not yet check for correctness, and is instead meant to be used with
  28  * memory debuggers to trap buffer overflows.
  29  *
  30  * Authors:
  31  *    Jose Fonseca <jfonseca@vmware.com>
  32  */
  33
  34 #include "piglit-util-gl.h"
  35
  36 static const GLint W = 800;
  37 static const GLint H = 600;
  38
  39 PIGLIT_GL_TEST_CONFIG_BEGIN
  40
  41         config.supports_gl_compat_version = 30;
  42
  43         config.window_width = W;
  44         config.window_height = H;
  45
  46         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  47         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  48
  49 PIGLIT_GL_TEST_CONFIG_END
  50
  51 static const char *
  52 vertexShader =
  53         "#version 130\n"
  54         "in vec4 A0;\n"
  55         "in vec4 A1;\n"
  56         "flat out vec4 fs_color0;\n"
  57         "flat out vec4 fs_color1;\n"
  58         "flat out vec4 fs_generic0;\n"
  59         "uniform vec4 CS[6];\n"
  60         "void main() {\n"
  61         "  vec4 position;\n"
  62         "  position  = A0.xxxx * CS[0];\n"
  63         "  position += A0.yyyy * CS[1];\n"
  64         "  position += A0.zzzz * CS[2];\n"
  65         "  position += A0.wwww * CS[3];\n"
  66         "  gl_ClipDistance[0] = dot(position, CS[4]);\n"
  67         "  gl_ClipDistance[1] = dot(position, CS[5]);\n"
  68         "  gl_Position = position;\n"
  69         "  fs_color0 = A1;\n"
  70         "  fs_color1 = vec4(0, 0, 0, 0);\n"
  71         "  fs_generic0 = vec4(0, 0, 0, 1);\n"
  72         "}\n"
  73 ;
  74
  75 static const char *
  76 fragmentShader =
  77         "#version 130\n"
  78         "#extension GL_EXT_gpu_shader4 : require\n"
  79         "flat in vec4 fs_color0;\n"
  80         "out vec4 fragColor0;\n"
  81         "void main(){\n"
  82         "  fragColor0.r = gl_PrimitiveID / 12.0;\n"
  83         "  fragColor0.g = gl_FrontFacing ? 1.0 : 0.0;\n"
  84         "  fragColor0.b = fs_color0.b;\n"
  85         "  fragColor0.a = 1.0;\n"
  86         "}\n"
  87 ;
  88
  89 static const float
  90 uniforms[][4] = {
  91         { 0.90533f, 3.223402e-08f, -2.673027e-08f, -2.670354e-08f },
  92         { -2.417551e-08f, 1.207107f, 5.346054e-08f, 5.340707e-08f },
  93         { 4.835103e-08f, -1.289361e-07f, 0.5005005f, 0.5f },
  94         { 0.0f, 0.0f, 2.902903f, 3.0f },
  95         { 0.0f, 0.0f, 0.0f, 0.0f },
  96         { 0.0f, 0.0f, 0.0f, 0.0f },
  97 };
  98
  99 typedef struct Vertex {
 100          float position[3];
 101          unsigned color;
 102 } Vertex;
 103
 104 static const Vertex
 105 vertices[] = {
 106          { { -1.0f, -1.0f, -1.0f }, 0xffffffffU },
 107          { { -1.0f, -1.0f,  1.0f }, 0xffffff00U },
 108          { { -1.0f,  1.0f, -1.0f }, 0xffff00ffU },
 109          { { -1.0f,  1.0f,  1.0f }, 0xffff0000U },
 110          { {  1.0f, -1.0f, -1.0f }, 0xff00ffffU },
 111          { {  1.0f, -1.0f,  1.0f }, 0xff00ff00U },
 112          { {  1.0f,  1.0f, -1.0f }, 0xff0000ffU },
 113          { {  1.0f,  1.0f,  1.0f }, 0xff000000U },
 114 };
 115
 116 static const GLushort
 117 indices[] = {
 118          0, 1, 3,
 119          3, 2, 0,
 120          4, 5, 7,
 121          7, 6, 4,
 122          0, 1, 5,
 123          5, 4, 0,
 124          2, 3, 7,
 125          7, 6, 2,
 126          0, 2, 6,
 127          6, 4, 0,
 128          1, 3, 7,
 129          7, 5, 1,
 130 };
 131
 132 static const GLubyte
 133 stipple[32][4] = {
 134         { 0x80, 0x80, 0x80, 0x80 },
 135         { 0x00, 0x00, 0x00, 0x00 },
 136         { 0x00, 0x00, 0x00, 0x00 },
 137         { 0x00, 0x00, 0x00, 0x00 },
 138         { 0x00, 0x00, 0x00, 0x00 },
 139         { 0x00, 0x00, 0x00, 0x00 },
 140         { 0x00, 0x00, 0x00, 0x00 },
 141         { 0x00, 0x00, 0x00, 0x00 },
 142         { 0x80, 0x80, 0x80, 0x80 },
 143         { 0x00, 0x00, 0x00, 0x00 },
 144         { 0x00, 0x00, 0x00, 0x00 },
 145         { 0x00, 0x00, 0x00, 0x00 },
 146         { 0x00, 0x00, 0x00, 0x00 },
 147         { 0x00, 0x00, 0x00, 0x00 },
 148         { 0x00, 0x00, 0x00, 0x00 },
 149         { 0x00, 0x00, 0x00, 0x00 },
 150         { 0x80, 0x80, 0x80, 0x80 },
 151         { 0x00, 0x00, 0x00, 0x00 },
 152         { 0x00, 0x00, 0x00, 0x00 },
 153         { 0x00, 0x00, 0x00, 0x00 },
 154         { 0x00, 0x00, 0x00, 0x00 },
 155         { 0x00, 0x00, 0x00, 0x00 },
 156         { 0x00, 0x00, 0x00, 0x00 },
 157         { 0x00, 0x00, 0x00, 0x00 },
 158         { 0x80, 0x80, 0x80, 0x80 },
 159         { 0x00, 0x00, 0x00, 0x00 },
 160         { 0x00, 0x00, 0x00, 0x00 },
 161         { 0x00, 0x00, 0x00, 0x00 },
 162         { 0x00, 0x00, 0x00, 0x00 },
 163         { 0x00, 0x00, 0x00, 0x00 },
 164         { 0x00, 0x00, 0x00, 0x00 },
 165         { 0x00, 0x00, 0x00, 0x00 },
 166 };
 167
 168 enum piglit_result piglit_display(void)
 169 {
 170         GLuint program = glCreateProgram();
 171         GLuint vs = piglit_compile_shader_text(GL_VERTEX_SHADER,
 172                         vertexShader);
 173         GLuint fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER,
 174                         fragmentShader);
 175         glAttachShader(program, vs);
 176         glDeleteShader(vs);
 177         glAttachShader(program, fs);
 178         glDeleteShader(fs);
 179         glBindAttribLocation(program, 0, "A0");
 180         glBindAttribLocation(program, 1, "A1");
 181         glBindFragDataLocation(program, 0, "fragColor0");
 182         glLinkProgram(program);
 183         glDetachShader(program, fs);
 184         glDetachShader(program, vs);
 185         if (!piglit_link_check_status(program)) {
 186                 glDeleteProgram(program);
 187                 piglit_report_result(PIGLIT_FAIL);
 188         }
 189         glUseProgram(program);
 190         GLint l0 = glGetUniformLocation(program, "CS[0]");
 191         assert(l0 >= 0);
 192         glUniform4fv(l0, ARRAY_SIZE(uniforms), uniforms[0]);
 193
 194         glViewport(0, 0, W, H);
 195         glDepthRange(0.0, 1.0);
 196         glEnable(GL_SCISSOR_TEST);
 197         glScissor(0, 0, W, H);
 198         glDisable(GL_DEPTH_TEST);
 199         glDepthFunc(GL_LESS);
 200         glEnable(GL_CLIP_DISTANCE0);
 201         glEnable(GL_CLIP_DISTANCE1);
 202         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 203
 204         glFrontFace(GL_CCW);
 205
 206         /* Smooth points for front faces.
 207          */
 208         glPolygonMode(GL_FRONT, GL_POINT);
 209         glEnable(GL_POINT_SMOOTH);
 210         glPointSize(9.0);
 211         if (GL_FALSE) {
 212                 glEnable(GL_POLYGON_STIPPLE);
 213                 glPolygonStipple(stipple[0]);
 214         }
 215
 216         /* Smooth lines for back faces.
 217          */
 218         glPolygonMode(GL_BACK, GL_LINE);
 219         glEnable(GL_LINE_SMOOTH);
 220         glLineWidth(3.0);
 221         glEnable(GL_LINE_STIPPLE);
 222         glLineStipple(3, 0xfafa);
 223
 224         GLuint vao = 0;
 225         glGenVertexArrays(1, &vao);
 226         glBindVertexArray(vao);
 227         GLuint vb = 0;
 228         glCreateBuffers(1, &vb);
 229         glBindBuffer(GL_ARRAY_BUFFER, vb);
 230         glBufferData(GL_ARRAY_BUFFER, sizeof vertices, vertices, GL_STATIC_DRAW);
 231         GLuint ib = 0;
 232         glCreateBuffers(1, &ib);
 233         glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ib);
 234         glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof indices, indices, GL_STATIC_DRAW);
 235         glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex),
 236                 (const void *)offsetof(Vertex, position));
 237         glVertexAttribPointer(1, GL_BGRA, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(Vertex),
 238                 (const void *)offsetof(Vertex, color));
 239         glEnableVertexAttribArray(0);
 240         glEnableVertexAttribArray(1);
 241
 242         glValidateProgram(program);
 243         GLint status = GL_FALSE;
 244         glGetProgramiv(program, GL_VALIDATE_STATUS, &status);
 245         if (status != GL_TRUE) {
 246                 piglit_report_result(PIGLIT_FAIL);
 247         }
 248
 249         glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 250         glClear(GL_COLOR_BUFFER_BIT);
 251
 252         glDrawElementsBaseVertex(GL_TRIANGLES, ARRAY_SIZE(indices),
 253                 GL_UNSIGNED_SHORT, NULL, 0);
 254
 255         piglit_present_results();
 256
 257         glBindVertexArray(0);
 258         glUseProgram(0);
 259         glDeleteBuffers(1, &vb);
 260         glDeleteBuffers(1, &ib);
 261         glDeleteVertexArrays(1, &vao);
 262         glDeleteProgram(program);
 263
 264         return PIGLIT_PASS;
 265 }
 266
 267 void piglit_init(int argc, char **argv)
 268 {
 269         piglit_require_extension("GL_EXT_gpu_shader4");
 270 }