/* * Copyright (c) 2011 VMware, Inc. * * 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. */ /* * Test copying images between texture mipmap levels using FBOs. * Test glCopyPixels and glReadPixels+glDrawPixels. * Test with and without pixel transfer. * Test with same/different src/dest texture formats. * * Brian Paul * May 25, 2011 */ #include "piglit-util-gl.h" PIGLIT_GL_TEST_CONFIG_BEGIN config.supports_gl_compat_version = 10; 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 const GLuint NumLevels = 10; static const GLfloat colors[10][4] = { { 1, 0, 0, 1 }, { 0, 1, 0, 1 }, { 0, 0, 1, 1 }, { 0, 1, 1, 1 }, { 1, 0, 1, 1 }, { 1, 1, 0, 1 }, { 1, 1, 1, 1 }, { .5, .5, .5, 1 }, { 0, 1, .5, 1 }, { .5, 0, 1, 1 } }; static GLuint create_texture(GLboolean fillInColors, GLenum intFormat) { GLuint tex, level, size, i; GLfloat *image; glGenTextures(1, &tex); glBindTexture(GL_TEXTURE_2D, tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /* level 0 size */ size = 1 << (NumLevels - 1); image = malloc(size * size * 4 * sizeof(GLfloat)); if (!fillInColors) { /* Set image to black */ memset(image, 0, size * size * 4 * sizeof(GLfloat)); } for (level = 0; level < NumLevels; level++) { assert(size >= 1); if (fillInColors) { /* fill in src image with specific color */ for (i = 0; i < size * size; i++) { image[i*4+0] = colors[level][0]; image[i*4+1] = colors[level][1]; image[i*4+2] = colors[level][2]; image[i*4+3] = colors[level][3]; } } glTexImage2D(GL_TEXTURE_2D, level, intFormat, size, size, 0, GL_RGBA, GL_FLOAT, image); size /= 2; } free(image); return tex; } static GLboolean test_mipmap_copypixels(GLenum srcIntFormat, GLenum dstIntFormat, GLboolean doPixelTransfer, GLboolean useReadDrawPix) { GLuint srcTex, dstTex; GLuint fboSrc, fboDst; GLuint level, size; GLboolean pass = GL_TRUE; GLenum status; if (doPixelTransfer) { glPixelTransferf(GL_ALPHA_SCALE, 0.0000001); glPixelTransferf(GL_ALPHA_BIAS, 1.0); } srcTex = create_texture(GL_TRUE, srcIntFormat); dstTex = create_texture(GL_FALSE, dstIntFormat); glGenFramebuffers(1, &fboSrc); glGenFramebuffers(1, &fboDst); size = 1 << (NumLevels - 1); for (level = 0; level < NumLevels; level++) { /* setup src */ glBindFramebuffer(GL_READ_FRAMEBUFFER, fboSrc); glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, srcTex, level); status = glCheckFramebufferStatus(GL_READ_FRAMEBUFFER); if (status != GL_FRAMEBUFFER_COMPLETE) { fprintf(stderr, "Source FBO incomplete for level %u (0x%x)\n", level, status); pass = GL_FALSE; break; } /* setup dest */ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fboDst); glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, dstTex, level); status = glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER); if (status != GL_FRAMEBUFFER_COMPLETE) { fprintf(stderr, "Dest FBO incomplete for level %u (0x%x)\n", level, status); pass = GL_FALSE; break; } glReadBuffer(GL_COLOR_ATTACHMENT0); glDrawBuffer(GL_COLOR_ATTACHMENT0); /* copy from src mipmap level to dest */ if (useReadDrawPix) { GLubyte *tmp = (GLubyte *) malloc(size * size * 4 * sizeof(GLubyte)); glReadPixels(0, 0, size, size, GL_RGBA, GL_UNSIGNED_BYTE, tmp); if (0) printf("copy color %u %u %u %u\n", tmp[0], tmp[1], tmp[2], tmp[3]); glDrawPixels(size, size, GL_RGBA, GL_UNSIGNED_BYTE, tmp); free(tmp); } else { glCopyPixels(0, 0, size, size, GL_COLOR); } size /= 2; } /* restore */ glPixelTransferf(GL_ALPHA_SCALE, 1.0); glPixelTransferf(GL_ALPHA_BIAS, 0.0); glDeleteFramebuffers(1, &fboSrc); glDeleteFramebuffers(1, &fboDst); glBindFramebuffer(GL_FRAMEBUFFER, piglit_winsys_fbo); if (!pass) return GL_FALSE; /* Draw with dest texture and test the color */ glBindTexture(GL_TEXTURE_2D, dstTex); glEnable(GL_TEXTURE_2D); glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); size = 1 << (NumLevels - 1); for (level = 0; level < NumLevels; level++) { GLboolean p; glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_LOD, level); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_LOD, level); glClear(GL_COLOR_BUFFER_BIT); piglit_draw_rect_tex(0, 0, piglit_width, piglit_height, 0.0, 0.0, 1.0, 1.0); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, colors[level]); if (!p) { printf(" Mipmap level %d\n", level); printf(" Source tex format: %s\n", piglit_get_gl_enum_name(srcIntFormat)); printf(" Destination tex format: %s\n", piglit_get_gl_enum_name(dstIntFormat)); if (useReadDrawPix) printf(" Using glRead/DrawPixels()\n"); else printf(" Using glCopyPixels()\n"); if (srcIntFormat == dstIntFormat) printf(" Matching src/dest texture formats\n"); else printf(" Different src/dest texture formats\n"); if (doPixelTransfer) printf(" With pixel transfer enabled\n"); pass = GL_FALSE; } size /= 2; piglit_present_results(); } glDisable(GL_TEXTURE_2D); glDeleteTextures(1, &srcTex); glDeleteTextures(1, &dstTex); return pass; } enum piglit_result piglit_display(void) { GLboolean pass = GL_TRUE; GLint formats, pixelTransfer, readDrawPix; for (formats = 0; formats < 2; formats++) { for (pixelTransfer = 0; pixelTransfer < 2; pixelTransfer++) { for (readDrawPix = 0; readDrawPix < 2; readDrawPix++) { GLenum srcFmt, dstFmt; if (formats == 0) { srcFmt = dstFmt = GL_RGBA; } else { srcFmt = GL_RGBA8; dstFmt = GL_RGB10_A2; } pass = test_mipmap_copypixels(srcFmt, dstFmt, pixelTransfer, readDrawPix) && pass; } } } return pass ? PIGLIT_PASS : PIGLIT_FAIL; } void piglit_init(int argc, char **argv) { piglit_require_extension("GL_ARB_framebuffer_object"); piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE); glClearColor(0.5, 0.5, 0.5, 0.5); }