/* * (C) Copyright IBM Corporation 2003 * All Rights Reserved. * * 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 * on the rights to use, copy, modify, merge, publish, distribute, sub * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS 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 glxconfig.c * Utility routines for working with \c struct glx_config structures. At * some point most or all of these functions will be moved to the Mesa * code base. * * \author Ian Romanick <idr@us.ibm.com> */ #include <GL/glx.h> #include "GL/glxint.h" #include <stdlib.h> #include <string.h> #include "glxconfig.h" #define NUM_VISUAL_TYPES 6 /** * Get data from a GLX config * * \param mode GL context mode whose data is to be returned. * \param attribute Attribute of \c mode that is to be returned. * \param value_return Location to store the data member of \c mode. * \return If \c attribute is a valid attribute of \c mode, zero is * returned. Otherwise \c GLX_BAD_ATTRIBUTE is returned. */ _X_HIDDEN int glx_config_get(struct glx_config * mode, int attribute, int *value_return) { switch (attribute) { case GLX_USE_GL: *value_return = GL_TRUE; return 0; case GLX_BUFFER_SIZE: *value_return = mode->rgbBits; return 0; case GLX_RGBA: *value_return = mode->rgbMode; return 0; case GLX_RED_SIZE: *value_return = mode->redBits; return 0; case GLX_GREEN_SIZE: *value_return = mode->greenBits; return 0; case GLX_BLUE_SIZE: *value_return = mode->blueBits; return 0; case GLX_ALPHA_SIZE: *value_return = mode->alphaBits; return 0; case GLX_DOUBLEBUFFER: *value_return = mode->doubleBufferMode; return 0; case GLX_STEREO: *value_return = mode->stereoMode; return 0; case GLX_AUX_BUFFERS: *value_return = mode->numAuxBuffers; return 0; case GLX_DEPTH_SIZE: *value_return = mode->depthBits; return 0; case GLX_STENCIL_SIZE: *value_return = mode->stencilBits; return 0; case GLX_ACCUM_RED_SIZE: *value_return = mode->accumRedBits; return 0; case GLX_ACCUM_GREEN_SIZE: *value_return = mode->accumGreenBits; return 0; case GLX_ACCUM_BLUE_SIZE: *value_return = mode->accumBlueBits; return 0; case GLX_ACCUM_ALPHA_SIZE: *value_return = mode->accumAlphaBits; return 0; case GLX_LEVEL: *value_return = mode->level; return 0; #ifndef GLX_USE_APPLEGL /* This isn't supported by CGL. */ case GLX_TRANSPARENT_TYPE_EXT: *value_return = mode->transparentPixel; return 0; #endif case GLX_TRANSPARENT_RED_VALUE: *value_return = mode->transparentRed; return 0; case GLX_TRANSPARENT_GREEN_VALUE: *value_return = mode->transparentGreen; return 0; case GLX_TRANSPARENT_BLUE_VALUE: *value_return = mode->transparentBlue; return 0; case GLX_TRANSPARENT_ALPHA_VALUE: *value_return = mode->transparentAlpha; return 0; case GLX_TRANSPARENT_INDEX_VALUE: *value_return = mode->transparentIndex; return 0; case GLX_X_VISUAL_TYPE: *value_return = mode->visualType; return 0; case GLX_CONFIG_CAVEAT: *value_return = mode->visualRating; return 0; case GLX_VISUAL_ID: *value_return = mode->visualID; return 0; case GLX_DRAWABLE_TYPE: *value_return = mode->drawableType; return 0; case GLX_RENDER_TYPE: *value_return = mode->renderType; return 0; case GLX_X_RENDERABLE: *value_return = mode->xRenderable; return 0; case GLX_FBCONFIG_ID: *value_return = mode->fbconfigID; return 0; case GLX_MAX_PBUFFER_WIDTH: *value_return = mode->maxPbufferWidth; return 0; case GLX_MAX_PBUFFER_HEIGHT: *value_return = mode->maxPbufferHeight; return 0; case GLX_MAX_PBUFFER_PIXELS: *value_return = mode->maxPbufferPixels; return 0; #ifndef GLX_USE_APPLEGL /* These aren't supported by CGL. */ case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX: *value_return = mode->optimalPbufferWidth; return 0; case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX: *value_return = mode->optimalPbufferHeight; return 0; case GLX_SWAP_METHOD_OML: *value_return = mode->swapMethod; return 0; #endif case GLX_SAMPLE_BUFFERS_SGIS: *value_return = mode->sampleBuffers; return 0; case GLX_SAMPLES_SGIS: *value_return = mode->samples; return 0; case GLX_BIND_TO_TEXTURE_RGB_EXT: *value_return = mode->bindToTextureRgb; return 0; case GLX_BIND_TO_TEXTURE_RGBA_EXT: *value_return = mode->bindToTextureRgba; return 0; case GLX_BIND_TO_MIPMAP_TEXTURE_EXT: *value_return = mode->bindToMipmapTexture == GL_TRUE ? GL_TRUE : GL_FALSE; return 0; case GLX_BIND_TO_TEXTURE_TARGETS_EXT: *value_return = mode->bindToTextureTargets; return 0; case GLX_Y_INVERTED_EXT: *value_return = mode->yInverted; return 0; case GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT: *value_return = mode->sRGBCapable; return 0; /* Applications are NOT allowed to query GLX_VISUAL_SELECT_GROUP_SGIX. * It is ONLY for communication between the GLX client and the GLX * server. */ case GLX_VISUAL_SELECT_GROUP_SGIX: default: return GLX_BAD_ATTRIBUTE; } } /** * Allocate a linked list of \c struct glx_config structures. The fields of * each structure will be initialized to "reasonable" default values. In * most cases this is the default value defined by table 3.4 of the GLX * 1.3 specification. This means that most values are either initialized to * zero or \c GLX_DONT_CARE (which is -1). As support for additional * extensions is added, the new values will be initialized to appropriate * values from the extension specification. * * \param count Number of structures to allocate. * \param minimum_size Minimum size of a structure to allocate. This allows * for differences in the version of the * \c struct glx_config stucture used in libGL and in a * DRI-based driver. * \returns A pointer to the first element in a linked list of \c count * stuctures on success, or \c NULL on failure. */ _X_HIDDEN struct glx_config * glx_config_create_list(unsigned count) { const size_t size = sizeof(struct glx_config); struct glx_config *base = NULL; struct glx_config **next; unsigned i; next = &base; for (i = 0; i < count; i++) { *next = malloc(size); if (*next == NULL) { glx_config_destroy_list(base); base = NULL; break; } (void) memset(*next, 0, size); (*next)->visualID = GLX_DONT_CARE; (*next)->visualType = GLX_DONT_CARE; (*next)->visualRating = GLX_NONE; (*next)->transparentPixel = GLX_NONE; (*next)->transparentRed = GLX_DONT_CARE; (*next)->transparentGreen = GLX_DONT_CARE; (*next)->transparentBlue = GLX_DONT_CARE; (*next)->transparentAlpha = GLX_DONT_CARE; (*next)->transparentIndex = GLX_DONT_CARE; (*next)->xRenderable = GLX_DONT_CARE; (*next)->fbconfigID = GLX_DONT_CARE; (*next)->swapMethod = GLX_SWAP_UNDEFINED_OML; (*next)->bindToTextureRgb = GLX_DONT_CARE; (*next)->bindToTextureRgba = GLX_DONT_CARE; (*next)->bindToMipmapTexture = GLX_DONT_CARE; (*next)->bindToTextureTargets = GLX_DONT_CARE; (*next)->yInverted = GLX_DONT_CARE; (*next)->sRGBCapable = GLX_DONT_CARE; next = &((*next)->next); } return base; } _X_HIDDEN void glx_config_destroy_list(struct glx_config *configs) { while (configs != NULL) { struct glx_config *const next = configs->next; free(configs); configs = next; } } /** * Find a context mode matching a Visual ID. * * \param modes List list of context-mode structures to be searched. * \param vid Visual ID to be found. * \returns A pointer to a context-mode in \c modes if \c vid was found in * the list, or \c NULL if it was not. */ _X_HIDDEN struct glx_config * glx_config_find_visual(struct glx_config *configs, int vid) { struct glx_config *c; for (c = configs; c != NULL; c = c->next) if (c->visualID == vid) return c; return NULL; } _X_HIDDEN struct glx_config * glx_config_find_fbconfig(struct glx_config *configs, int fbid) { struct glx_config *c; for (c = configs; c != NULL; c = c->next) if (c->fbconfigID == fbid) return c; return NULL; }