tests/spec/arb_blend_func_extended/api/error-at-begin.c

   1 /*
   2  * Copyright © 2011 Red Hat
   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 error-at-begin.c
  26  *
  27  * \author Dave Airlie
  28  * ARB_blend_func_extended states in ERRORS section
  29  * "The error INVALID_OPERATION is generated by Begin or any procedure that
  30  * implicitly calls Begin if any draw buffer has a blend function requiring the
  31  * second color input (SRC1_COLOR, ONE_MINUS_SRC1_COLOR, SRC1_ALPHA or
  32  * ONE_MINUS_SRC1_ALPHA), and a framebuffer is bound that has more than
  33  * the value of MAX_DUAL_SOURCE_DRAW_BUFFERS-1 active color attachements."
  34  */
  35 #include "piglit-util-gl.h"
  36
  37 PIGLIT_GL_TEST_CONFIG_BEGIN
  38
  39         config.supports_gl_compat_version = 10;
  40         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  41         config.khr_no_error_support = PIGLIT_HAS_ERRORS;
  42
  43 PIGLIT_GL_TEST_CONFIG_END
  44
  45 enum piglit_result
  46 piglit_display(void)
  47 {
  48         return PIGLIT_FAIL;
  49 }
  50
  51 static GLuint fbo;
  52 static GLuint max_buffers;
  53
  54 static void
  55 create_fbo(void)
  56 {
  57         GLuint rb[32];
  58         int i;
  59
  60         glGenFramebuffers(1, &fbo);
  61         glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo);
  62
  63         glGenRenderbuffers(max_buffers, rb);
  64
  65         for (i = 0; i < max_buffers; i++) {
  66                 glBindRenderbuffer(GL_RENDERBUFFER_EXT, rb[i]);
  67
  68                 glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT,
  69                                           GL_COLOR_ATTACHMENT0 + i,
  70                                           GL_RENDERBUFFER_EXT,
  71                                           rb[i]);
  72                 glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_RGBA,
  73                                          piglit_width, piglit_height);
  74         }
  75 }
  76
  77 void piglit_init(int argc, char **argv)
  78 {
  79         GLint max_dual_source;
  80         GLenum buffers[32];
  81         int i;
  82         piglit_require_gl_version(30);
  83         piglit_require_extension("GL_ARB_blend_func_extended");
  84         piglit_require_extension("GL_ARB_draw_buffers_blend");
  85
  86
  87         /* This test needs some number of draw buffers, so make sure the
  88          * implementation isn't broken. This enables the test to generate a
  89          * useful failure message.
  90          */
  91         glGetIntegerv(GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, &max_dual_source);
  92         if (max_dual_source < 1) {
  93                 fprintf(stderr,
  94                         "ARB_blend_func_extended requires GL_MAX_DUAL_SOURCE_DRAW_BUFFERS >= 1.  "
  95                         "Only got %d!\n",
  96                         max_dual_source);
  97                 piglit_report_result(PIGLIT_FAIL);
  98         }
  99
 100         max_buffers = max_dual_source + 1;
 101
 102         create_fbo();
 103
 104         for (i = 0; i < max_buffers; i++)
 105                 buffers[i] = GL_COLOR_ATTACHMENT0_EXT + i;
 106
 107         glDrawBuffersARB(max_buffers, buffers);
 108
 109         for (i = 0; i < max_buffers; i++) {
 110                 if (i >= max_dual_source)
 111                         glBlendFunciARB(i, GL_SRC1_ALPHA, GL_ONE_MINUS_SRC1_ALPHA);
 112                 else
 113                         glBlendFunciARB(i, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 114                 glEnableIndexedEXT(GL_BLEND, i);
 115         }
 116
 117         glBegin(GL_QUADS);
 118
 119         if (!piglit_check_gl_error(GL_INVALID_OPERATION))
 120                 piglit_report_result(PIGLIT_FAIL);
 121         else
 122                 piglit_report_result(PIGLIT_PASS);
 123 }