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Diffstat (limited to 'src/glx/glxconfig.c')
| -rw-r--r-- | src/glx/glxconfig.c | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/src/glx/glxconfig.c b/src/glx/glxconfig.c new file mode 100644 index 00000000000..1d9678f48cd --- /dev/null +++ b/src/glx/glxconfig.c @@ -0,0 +1,304 @@ +/* + * (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 <[email protected]> + */ + +#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; + + /* 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 = (struct glx_config *) 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 = &((*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; +} |