/* * Copyright © 2009 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. */ /** * This test draws a point sprite with a checkerboard texture and tests * whether the correct colors were drawn using piglit_probe_pixel_rgb. * * \author Ben Holmes */ #include "piglit-util-gl.h" #define BOX_SIZE 64 #define TEST_COLS 6 #define TEST_ROWS 2 PIGLIT_GL_TEST_CONFIG_BEGIN config.supports_gl_compat_version = 10; config.window_width = 1+((BOX_SIZE+1)*TEST_COLS); config.window_height = 1+((BOX_SIZE+1)*TEST_ROWS); config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB; config.khr_no_error_support = PIGLIT_NO_ERRORS; PIGLIT_GL_TEST_CONFIG_END static float maxSize = 0.0f; static GLuint tex; static const GLfloat black[4] = {0.0, 0.0, 0.0, 1.0}; static const GLfloat white[4] = {1.0, 1.0, 1.0, 1.0}; void piglit_init(int argc, char **argv) { GLfloat realMaxSize; (void) argc; (void) argv; piglit_require_extension("GL_ARB_point_sprite"); piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE); glEnable(GL_TEXTURE_2D); glEnable(GL_POINT_SPRITE_ARB); glGetFloatv(GL_POINT_SIZE_MAX, &realMaxSize); maxSize = (realMaxSize > BOX_SIZE) ? BOX_SIZE : realMaxSize; glClearColor(0.2, 0.2, 0.2, 1.0); glColor3f(1.0, 1.0, 1.0); tex = piglit_checkerboard_texture(0, 0, 2, 2, 1, 1, black, white); glTexEnvi(GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE); if (!piglit_automatic) printf("Maximum point size is %f, using %f\n", realMaxSize, maxSize); } enum piglit_result piglit_display(void) { static const GLenum origins[2] = { GL_UPPER_LEFT, GL_LOWER_LEFT }; const unsigned num_rows = (piglit_get_gl_version() >= 20) ? 2 : 1; GLboolean pass = GL_TRUE; unsigned i; unsigned j; glClear(GL_COLOR_BUFFER_BIT); glBindTexture(GL_TEXTURE_2D, tex); for (i = 0; i < num_rows; i++) { const float y = 1 + (BOX_SIZE / 2) + (i * (BOX_SIZE + 1)); const float *const upper_left = (origins[i] == GL_UPPER_LEFT) ? black : white; const float *const lower_left = (origins[i] == GL_UPPER_LEFT) ? white : black; /* OpenGL version must be at least 2.0 to support modifying * GL_POINT_SPRITE_COORD_ORIGIN. */ if (piglit_get_gl_version() >= 20) glPointParameteri(GL_POINT_SPRITE_COORD_ORIGIN, origins[i]); for (j = 0; j < TEST_COLS; j++) { const float x = 1 + (BOX_SIZE / 2) + (j * (BOX_SIZE + 1)); const float size = maxSize / (float) (1 << j); /* If the point size is too small, there won't be * enough pixels drawn for the tests (below). */ if (size < 2.0) continue; glPointSize(size - 0.2); glBegin(GL_POINTS); glTexCoord2f(1.5, 1.5); glVertex2f(x, y); glEnd(); if (!piglit_probe_pixel_rgb(x - (size / 4), y + (size / 4), upper_left) || !piglit_probe_pixel_rgb(x - (size / 4), y - (size / 4), lower_left) || !piglit_probe_pixel_rgb(x + (size / 4), y + (size / 4), lower_left) || !piglit_probe_pixel_rgb(x + (size / 4), y - (size / 4), upper_left)) { if (!piglit_automatic) printf(" size = %.3f, " "origin = %s left\n", size, (origins[i] == GL_UPPER_LEFT) ? "upper" : "lower"); pass = GL_FALSE; } } } piglit_present_results(); return pass ? PIGLIT_PASS : PIGLIT_FAIL; }