/*
* (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 = (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)->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;
}