tests/spec/intel_blackhole_render/blackhole_dispatch.c

   1 /*
   2  * Copyright © 2018 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 /** @file blackhole_draw.c
  25  *
  26  * Verifies that with GL_INTEL_black_render enabled, dispatch operations have no
  27  * effect.
  28  */
  29
  30 #include "piglit-util-gl.h"
  31
  32 PIGLIT_GL_TEST_CONFIG_BEGIN
  33
  34 #if defined(PIGLIT_USE_OPENGL)
  35         config.supports_gl_core_version = 42;
  36 #elif defined(PIGLIT_USE_OPENGL_ES2) || defined(PIGLIT_USE_OPENGL_ES3)
  37         config.supports_gl_es_version = 20;
  38 #endif
  39         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  40
  41 PIGLIT_GL_TEST_CONFIG_END
  42
  43 #define SIZE_X (4)
  44
  45 static const char *compute_shader =
  46         "#version 430\n"
  47         "layout (local_size_x = 1) in;"
  48         "uniform float value;"
  49         "\n"
  50         "layout (std430, binding = 0) buffer OutBuf { float output_values[]; };\n"
  51         "\n"
  52         "void main()\n"
  53         "{\n"
  54         "    uint pos = gl_GlobalInvocationID.x;\n"
  55         "    output_values[pos] = value;\n"
  56         "}\n";
  57
  58 enum piglit_result
  59 piglit_display(void)
  60 {
  61         return PIGLIT_FAIL;
  62 }
  63
  64 void
  65 piglit_init(int argc, char **argv)
  66 {
  67         enum piglit_result result = PIGLIT_PASS;
  68         GLuint data_bo = 0;
  69         GLfloat *data_buf;
  70         GLint ok = 1;
  71         GLint prog = 0;
  72         GLuint shader;
  73         const float one = 1.0f;
  74
  75         piglit_require_extension("GL_ARB_compute_shader");
  76         piglit_require_extension("GL_INTEL_blackhole_render");
  77
  78         data_buf = calloc(SIZE_X, sizeof(*data_buf));
  79         glGenBuffers(1, &data_bo);
  80         glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, data_bo);
  81         glBufferData(GL_SHADER_STORAGE_BUFFER,
  82                      sizeof(float) * SIZE_X,
  83                      data_buf, GL_STATIC_DRAW);
  84         free(data_buf);
  85
  86         shader = glCreateShader(GL_COMPUTE_SHADER);
  87
  88         glShaderSource(shader, 1,
  89                        (const GLchar **) &compute_shader,
  90                        NULL);
  91
  92         glCompileShader(shader);
  93
  94         glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
  95         assert(ok);
  96
  97         prog = glCreateProgram();
  98
  99         glAttachShader(prog, shader);
 100
 101         glLinkProgram(prog);
 102
 103         glGetProgramiv(prog, GL_LINK_STATUS, &ok);
 104         assert(ok);
 105
 106         glUseProgram(prog);
 107
 108         assert(!glIsEnabled(GL_BLACKHOLE_RENDER_INTEL));
 109
 110         glMemoryBarrier(GL_ALL_BARRIER_BITS);
 111         glUniform1f(glGetUniformLocation(prog, "value"), 1.0f);
 112         glDispatchCompute(SIZE_X, 1, 1);
 113         glMemoryBarrier(GL_ALL_BARRIER_BITS);
 114
 115         if (!piglit_probe_buffer(data_bo, GL_SHADER_STORAGE_BUFFER, "output_values",
 116                                  SIZE_X, 1, &one))
 117                 result = PIGLIT_FAIL;
 118
 119         glEnable(GL_BLACKHOLE_RENDER_INTEL);
 120         assert(glIsEnabled(GL_BLACKHOLE_RENDER_INTEL));
 121
 122         glMemoryBarrier(GL_ALL_BARRIER_BITS);
 123         glUniform1f(glGetUniformLocation(prog, "value"), 2.0f);
 124         glDispatchCompute(SIZE_X, 1, 1);
 125         glMemoryBarrier(GL_ALL_BARRIER_BITS);
 126
 127         if (!piglit_probe_buffer(data_bo, GL_SHADER_STORAGE_BUFFER, "output_values",
 128                                  SIZE_X, 1, &one))
 129                 result = PIGLIT_FAIL;
 130
 131         piglit_report_result(result);
 132 }