/* Copyright © 2011 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ /** * \file bindfragdata-link-error.c * * \author Ian Romanick */ #include "piglit-util-gl.h" PIGLIT_GL_TEST_CONFIG_BEGIN config.supports_gl_compat_version = 10; config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE; config.khr_no_error_support = PIGLIT_NO_ERRORS; PIGLIT_GL_TEST_CONFIG_END static const char *vs_text = "#version 130\n" "in vec4 vertex;\n" "void main() { gl_Position = vertex; }\n" ; static const char *fs_text = "#version 130\n" "out vec4 v;\n" "out vec4 a[2];\n" "void main() {\n" " v = vec4(0.0);\n" " a[0] = vec4(1.0);\n" " a[1] = vec4(2.0);\n" "}\n" ; enum piglit_result piglit_display(void) { return PIGLIT_FAIL; } void piglit_init(int argc, char **argv) { GLint max_draw_buffers; GLuint prog; GLuint vs; GLuint fs; piglit_require_gl_version(30); /* This test needs some number of draw buffers, so make sure the * implementation isn't broken. This enables the test to generate a * useful failure message. */ glGetIntegerv(GL_MAX_DRAW_BUFFERS, &max_draw_buffers); if (max_draw_buffers < 8) { fprintf(stderr, "OpenGL 3.0 requires GL_MAX_DRAW_BUFFERS >= 8. " "Only got %d!\n", max_draw_buffers); piglit_report_result(PIGLIT_FAIL); } prog = glCreateProgram(); vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_text); fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_text); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); /* First, verify that the program will link without making any * location assignments through the API. */ printf("Basic test...\n"); glAttachShader(prog, vs); glAttachShader(prog, fs); glLinkProgram(prog); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); if (!piglit_link_check_status(prog)) { piglit_report_result(PIGLIT_FAIL); } /* Page 237 (page 253 of the PDF) of the OpenGL 3.0 spec says: * * "LinkProgram will fail if the assigned binding of a varying out * variable would cause the GL to reference a non-existant * fragment color number (one greater than or equal to MAX DRAW * BUFFERS)." * * The array output has two elements. Binding it to * GL_MAX_DRAW_BUFFERS - 1 causes a[0] to have a valid location but * a[1] to have an invalid location. * * This should not generate a GL error. It should only cause linking * to fail. */ printf("Assigning `a' to GL_MAX_DRAW_BUFFERS - 1...\n"); glBindFragDataLocation(prog, 0, "v"); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); glBindFragDataLocation(prog, max_draw_buffers - 1, "a"); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); glLinkProgram(prog); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); if (piglit_link_check_status_quiet(prog)) { fprintf(stderr, "Linking was successful when it should have failed.\n"); piglit_report_result(PIGLIT_FAIL); } /* Page 237 (page 253 of the PDF) of the OpenGL 3.0 spec says: * * "LinkProgram will also fail if more than one varying out * variable is bound to the same number. This type of aliasing is * not allowed." * * Try this by assiging 'a[0]' and 'v' to the same slot, and also try * assigning 'a[1]' and 'v' to the same slot. * * This should not generate a GL error. It should only cause linking * to fail. */ printf("Assigning `a[0]' and `v' to the same slot...\n"); glBindFragDataLocation(prog, 0, "v"); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); glBindFragDataLocation(prog, 0, "a"); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); glLinkProgram(prog); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); if (piglit_link_check_status_quiet(prog)) { fprintf(stderr, "Linking was successful when it should have failed.\n"); piglit_report_result(PIGLIT_FAIL); } printf("Assigning `a[1]' to `v' to the same slot...\n"); glBindFragDataLocation(prog, 1, "v"); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); glBindFragDataLocation(prog, 0, "a"); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); glLinkProgram(prog); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); if (piglit_link_check_status_quiet(prog)) { fprintf(stderr, "Linking was successful when it should have failed.\n"); piglit_report_result(PIGLIT_FAIL); } printf("Assigning `a' to `v' to non-overlapping slots...\n"); glBindFragDataLocation(prog, 0, "v"); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); glBindFragDataLocation(prog, 2, "a"); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); glLinkProgram(prog); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); if (!piglit_link_check_status(prog)) { fprintf(stderr, "Linking failed when it should have been " "successful.\n"); piglit_report_result(PIGLIT_FAIL); } piglit_report_result(PIGLIT_PASS); }