tests/spec/gl-3.0/api/clearbuffer-bug.c

   1 /* Copyright © 2020 Intel Corporation
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a
   4  * copy of this software and associated documentation files (the "Software"),
   5  * to deal in the Software without restriction, including without limitation
   6  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7  * and/or sell copies of the Software, and to permit persons to whom the
   8  * Software is furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice (including the next
  11  * paragraph) shall be included in all copies or substantial portions of the
  12  * Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  20  * IN THE SOFTWARE.
  21  */
  22
  23 /**
  24  * \file clearbuffer-bug.c
  25  * Verify clear buffer correctness. Based on test case in bug:
  26  * https://gitlab.freedesktop.org/mesa/mesa/-/issues/3783
  27  */
  28 #include "piglit-util-gl.h"
  29
  30 PIGLIT_GL_TEST_CONFIG_BEGIN
  31         config.supports_gl_compat_version = 30;
  32 PIGLIT_GL_TEST_CONFIG_END
  33
  34 enum piglit_result
  35 piglit_display(void)
  36 {
  37         return PIGLIT_FAIL;
  38 }
  39
  40 const char *v_str =
  41         "attribute vec4 piglit_vertex;\n"
  42         "void main() {\n"
  43                 "gl_Position = piglit_vertex;\n"
  44         "}";
  45
  46 const char* f_str =
  47         "#version 110\n"
  48         "void main() {\n"
  49                 "gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
  50                 "gl_FragDepth = 0.3;\n"
  51         "}";
  52
  53 void piglit_init(int argc, char **argv)
  54 {
  55         piglit_require_gl_version(30);
  56         piglit_require_GLSL_version(110);
  57
  58         bool pass = true;
  59
  60         GLint program = piglit_build_simple_program(v_str, f_str);
  61
  62         if (!program)
  63                 piglit_report_result(PIGLIT_FAIL);
  64
  65         glUseProgram(program);
  66
  67         /* Create depth/stencil texture. */
  68         GLuint ds_tex;
  69         glGenTextures(1, &ds_tex);
  70         glBindTexture(GL_TEXTURE_2D, ds_tex);
  71         glTexStorage2D(GL_TEXTURE_2D, 1, GL_DEPTH32F_STENCIL8, 4, 4);
  72
  73         /* Create color texture. */
  74         GLuint c_tex;
  75         glGenTextures(1, &c_tex);
  76         glBindTexture(GL_TEXTURE_2D, c_tex);
  77         glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, 4, 4);
  78
  79         /* Create fbo with attachments. */
  80         GLuint fbo;
  81         glGenFramebuffers(1, &fbo);
  82         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  83         glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, c_tex, 0);
  84         glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, ds_tex, 0);
  85
  86         GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
  87         GLint error = glGetError();
  88
  89         if (status != GL_FRAMEBUFFER_COMPLETE)
  90                 piglit_report_result(PIGLIT_SKIP);
  91
  92         if (error != 0) {
  93                 pass = false;
  94                 goto fail;
  95         }
  96
  97         glClearBufferfi(GL_DEPTH_STENCIL, 0, 0.3, 3);
  98
  99         glEnable(GL_DEPTH_TEST);
 100         glDepthFunc(GL_EQUAL);
 101
 102         piglit_draw_rect(-1.0, -1.0, 2.0, 2.0);
 103
 104         float expect[] = { 1, 0, 0, 1 };
 105         if (!piglit_probe_rect_rgba(0, 0, 4, 4, expect))
 106                 pass = false;
 107
 108 fail:
 109         glDeleteTextures(1, &c_tex);
 110         glDeleteTextures(1, &ds_tex);
 111         glDeleteFramebuffers(1, &fbo);
 112         glDeleteProgram(program);
 113         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 114 }