/* * 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. * * Authors: * Chris Lord * Eric Anholt * */ /** @file s3tc-teximage.c * * Tests that a full S3TC-compressed mipmap tree can be created and * used. */ #include "piglit-util-gl-common.h" PIGLIT_GL_TEST_MAIN( 500 /*window_width*/, 600 /*window_height*/, GLUT_RGB | GLUT_DOUBLE) #define SIZE 128 const float red[4] = {1.0, 0.0, 0.0, 1.0}; const float green[4] = {0.0, 1.0, 0.0, 1.0}; const float blue[4] = {0.0, 0.0, 1.0, 1.0}; const float white[4] = {1.0, 1.0, 1.0, 1.0}; static void display_mipmaps(int start_x, int start_y) { int i; glEnable(GL_TEXTURE_2D); /* Disply all the mipmap levels */ for (i = SIZE; i > 0; i /= 2) { glBegin(GL_QUADS); glTexCoord2f(0.0, 0.0); glVertex2f(start_x + 0, start_y + 0); glTexCoord2f(1.0, 0.0); glVertex2f(start_x + i, start_y + 0); glTexCoord2f(1.0, 1.0); glVertex2f(start_x + i, start_y + i); glTexCoord2f(0.0, 1.0); glVertex2f(start_x + 0, start_y + i); glEnd(); start_x += i + 5; } } static GLuint create_texture(GLenum format) { GLfloat *data; int size, x, y, level; GLuint tex; glGenTextures(1, &tex); glBindTexture(GL_TEXTURE_2D, tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); data = malloc(SIZE * SIZE * 4 * sizeof(GLfloat)); for (level = 0, size = SIZE; size > 0; level++, size >>= 1) { for (y = 0; y < size; y++) { for (x = 0; x < size; x++) { const float *color; if (size == 4) color = red; else if (size == 2) color = green; else if (size == 1) color = blue; else if (x < size / 2 && y < size / 2) color = red; else if (y < size / 2) color = green; else if (x < size / 2) color = blue; else color = white; memcpy(data + (y * size + x) * 4, color, 4 * sizeof(float)); } } /* Create empty texture */ glTexImage2D(GL_TEXTURE_2D, level, format, size, size, 0, GL_RGBA, GL_FLOAT, NULL); glPixelStorei(GL_UNPACK_ROW_LENGTH, size); /* Fill in sub regions of texture */ if (size <= 4) { glTexSubImage2D(GL_TEXTURE_2D, level, 0, 0, size, size, GL_RGBA, GL_FLOAT, data); } else { float *reds = data; float *greens = data + size / 2 * 4; float *blues = reds + (size / 2) * size * 4; float *whites = blues + size / 2 * 4; glTexSubImage2D(GL_TEXTURE_2D, level, 0, 0, size / 2, size / 2, GL_RGBA, GL_FLOAT, reds); glTexSubImage2D(GL_TEXTURE_2D, level, size / 2, 0, size / 2, size / 2, GL_RGBA, GL_FLOAT, greens); glTexSubImage2D(GL_TEXTURE_2D, level, 0, size / 2, size / 2, size / 2, GL_RGBA, GL_FLOAT, blues); glTexSubImage2D(GL_TEXTURE_2D, level, size / 2, size / 2, size / 2, size / 2, GL_RGBA, GL_FLOAT, whites); } } free(data); return tex; } static GLboolean check_resulting_mipmaps(int x, int y) { GLboolean pass = GL_TRUE; int size; for (size = SIZE; size > 0; size /= 2) { if (size == 4) pass = pass && piglit_probe_pixel_rgb(x + 2, y + 2, red); else if (size == 2) pass = pass && piglit_probe_pixel_rgb(x + 1, y + 1, green); else if (size == 1) pass = pass && piglit_probe_pixel_rgb(x, y, blue); else { pass = pass && piglit_probe_pixel_rgb(x + size / 4, y + size / 4, red); pass = pass && piglit_probe_pixel_rgb(x + size * 3 / 4, y + size / 4, green); pass = pass && piglit_probe_pixel_rgb(x + size / 4, y + size * 3 / 4, blue); pass = pass && piglit_probe_pixel_rgb(x + size * 3 / 4, y + size * 3 / 4, white); } x += size + 5; } return pass; } enum piglit_result piglit_display(void) { GLuint tex; GLboolean pass = GL_TRUE; glClearColor(0, 0, 0, 0); glClear(GL_COLOR_BUFFER_BIT); tex = create_texture(GL_COMPRESSED_RGB_S3TC_DXT1_EXT); display_mipmaps(10, 10 + (10 + SIZE) * 0); glDeleteTextures(1, &tex); tex = create_texture(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT); display_mipmaps(10, 10 + (10 + SIZE) * 1); glDeleteTextures(1, &tex); tex = create_texture(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT); display_mipmaps(10, 10 + (10 + SIZE) * 2); glDeleteTextures(1, &tex); tex = create_texture(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT); display_mipmaps(10, 10 + (10 + SIZE) * 3); glDeleteTextures(1, &tex); pass = pass && check_resulting_mipmaps(10, 10 + (10 + SIZE) * 0); pass = pass && check_resulting_mipmaps(10, 10 + (10 + SIZE) * 1); pass = pass && check_resulting_mipmaps(10, 10 + (10 + SIZE) * 2); pass = pass && check_resulting_mipmaps(10, 10 + (10 + SIZE) * 3); piglit_present_results(); return pass ? PIGLIT_PASS : PIGLIT_FAIL; } void piglit_init(int argc, char **argv) { piglit_require_extension("GL_EXT_texture_compression_s3tc"); piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE); }