tests/shaders/shader_runner_gles_workarounds.h

   1 /*
   2  * Copyright © 2012 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
  26  * \brief Workarounds for building with GLES2 and GLES3.
  27  *
  28  * When building shader_runner against GLESX and libpiglitutil_glesX, there
  29  * are many macros and symbols that are not defined. This header defines such
  30  * macros to have the same value found in <GL/gl*.h>, and defines such
  31  * functions to print an error message and then report PIGLIT_SKIP, just as
  32  * piglit-dispatch does for unsupported extension functions.
  33  */
  34
  35 #include <stdio.h>
  36 #include "piglit-util.h"
  37
  38 static void
  39 #if defined(__GNUC__)
  40 __attribute__((unused))
  41 #endif
  42 unsupported_function(const char *name, ...)
  43 {
  44         printf("Function \"%s\" not supported on this implementation\n", name);
  45         piglit_report_result(PIGLIT_SKIP);
  46 }
  47
  48 /**
  49  * This macro should be sufficient for most functions. If one of the actual
  50  * function's parameters causes an unused-variable warning, you must
  51  * special-case the function. See glBindProgramARB for example.
  52  *
  53  * GLES doesn't exist on Windows. So we're free to use the GCC/Clang extension
  54  * for statement expressions.
  55  */
  56 #define UNSUPPORTED_FUNCTION(name, return_value, ...) \
  57         ({ \
  58                 unsupported_function(#name, __VA_ARGS__); \
  59                 return_value; \
  60          })
  61
  62 #if defined(PIGLIT_USE_OPENGL_ES3) || defined(PIGLIT_USE_OPENGL_ES2)
  63
  64 #define piglit_frustum_projection(...) UNSUPPORTED_FUNCTION(piglit_frustum_projection, 0, __VA_ARGS__)
  65 #define piglit_gen_ortho_projection(...) UNSUPPORTED_FUNCTION(piglit_gen_ortho_projection, 0, __VA_ARGS__)
  66 #define piglit_miptree_texture() UNSUPPORTED_FUNCTION(piglit_miptree_texture, 0, 0)
  67 #define piglit_depth_texture(...) UNSUPPORTED_FUNCTION(piglit_depth_texture, 0, __VA_ARGS__)
  68 #define piglit_ortho_projection(...) UNSUPPORTED_FUNCTION(piglit_ortho_projection, 0, __VA_ARGS__)
  69 #define piglit_compile_program(...) UNSUPPORTED_FUNCTION(piglit_compile_program, 0, __VA_ARGS__)
  70
  71 #if defined(PIGLIT_USE_OPENGL_ES3)
  72 #undef glMapBuffer
  73
  74 static GLvoid*
  75 glMapBuffer(GLenum target, GLbitfield map_buffer_access)
  76 {
  77         /* Emulate with glMapBufferRange. */
  78
  79         GLsizeiptr length = 0;
  80         GLbitfield map_buffer_range_access;
  81
  82         glGetBufferParameteri64v(target, GL_BUFFER_SIZE, (GLint64*) &length);
  83         if (!piglit_check_gl_error(GL_NO_ERROR))
  84                 piglit_report_result(PIGLIT_FAIL);
  85
  86         switch (map_buffer_access) {
  87         case GL_READ_ONLY:
  88                 map_buffer_range_access = GL_MAP_READ_BIT;
  89                 break;
  90         case GL_WRITE_ONLY:
  91                 map_buffer_range_access = GL_MAP_WRITE_BIT;
  92                 break;
  93         case GL_READ_WRITE:
  94                 map_buffer_range_access = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
  95                 break;
  96         default:
  97                 map_buffer_range_access = 0;
  98                 break;
  99         }
 100         return glMapBufferRange(target, 0, length, map_buffer_range_access);
 101 }
 102 #endif /* PIGLIT_USE_OPENGL_ES3 */
 103
 104 #endif /* PIGLIT_USE_OPENGL_ES3 || PIGLIT_USE_OPENGL_ES2 */