588 lines
19 KiB
C
588 lines
19 KiB
C
/*
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* (C) Copyright IBM Corporation 2003
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file glcontextmodes.c
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* Utility routines for working with \c __GLcontextModes structures. At
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* some point most or all of these functions will be moved to the Mesa
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* code base.
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*
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* \author Ian Romanick <idr@us.ibm.com>
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*/
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#if defined(IN_MINI_GLX)
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#include <GL/gl.h>
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#else
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#if defined(HAVE_DIX_CONFIG_H)
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include <GL/glx.h>
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#include "GL/glxint.h"
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#endif
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/* Memory macros */
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#if defined(IN_MINI_GLX)
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#include <stdlib.h>
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#include <string.h>
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#define _mesa_malloc(b) malloc(b)
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#define _mesa_free(m) free(m)
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#define _mesa_memset memset
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#else
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#ifdef XFree86Server
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#include <os.h>
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#include <string.h>
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#define _mesa_malloc(b) malloc(b)
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#define _mesa_free(m) free(m)
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#define _mesa_memset memset
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#else
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#include <X11/Xlibint.h>
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#define _mesa_memset memset
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#define _mesa_malloc(b) Xmalloc(b)
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#define _mesa_free(m) free(m)
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#endif /* XFree86Server */
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#endif /* !defined(IN_MINI_GLX) */
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#include "glcontextmodes.h"
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#if !defined(IN_MINI_GLX)
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#define NUM_VISUAL_TYPES 6
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/**
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* Convert an X visual type to a GLX visual type.
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*
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* \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.)
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* to be converted.
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* \return If \c visualType is a valid X visual type, a GLX visual type will
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* be returned. Otherwise \c GLX_NONE will be returned.
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*/
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GLint
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_gl_convert_from_x_visual_type(int visualType)
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{
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static const int glx_visual_types[NUM_VISUAL_TYPES] = {
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GLX_STATIC_GRAY, GLX_GRAY_SCALE,
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GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,
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GLX_TRUE_COLOR, GLX_DIRECT_COLOR
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};
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return ((unsigned)visualType < NUM_VISUAL_TYPES)
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? glx_visual_types[visualType] : GLX_NONE;
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}
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/**
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* Convert a GLX visual type to an X visual type.
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*
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* \param visualType GLX visual type (i.e., \c GLX_TRUE_COLOR,
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* \c GLX_STATIC_GRAY, etc.) to be converted.
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* \return If \c visualType is a valid GLX visual type, an X visual type will
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* be returned. Otherwise -1 will be returned.
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*/
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GLint
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_gl_convert_to_x_visual_type(int visualType)
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{
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static const int x_visual_types[NUM_VISUAL_TYPES] = {
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TrueColor, DirectColor,
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PseudoColor, StaticColor,
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GrayScale, StaticGray
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};
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return ((unsigned)(visualType - GLX_TRUE_COLOR) < NUM_VISUAL_TYPES)
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? x_visual_types[visualType - GLX_TRUE_COLOR] : -1;
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}
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/**
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* Copy a GLX visual config structure to a GL context mode structure. All
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* of the fields in \c config are copied to \c mode. Additional fields in
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* \c mode that can be derrived from the fields of \c config (i.e.,
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* \c haveDepthBuffer) are also filled in. The remaining fields in \c mode
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* that cannot be derived are set to default values.
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*
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* \param mode Destination GL context mode.
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* \param config Source GLX visual config.
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*
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* \note
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* The \c fbconfigID and \c visualID fields of the \c __GLcontextModes
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* structure will be set to the \c vid of the \c __GLXvisualConfig structure.
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*/
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void
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_gl_copy_visual_to_context_mode(__GLcontextModes * mode,
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const __GLXvisualConfig * config)
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{
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__GLcontextModes * const next = mode->next;
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(void)_mesa_memset(mode, 0, sizeof(__GLcontextModes));
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mode->next = next;
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mode->visualID = config->vid;
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mode->visualType = _gl_convert_from_x_visual_type(config->class);
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mode->xRenderable = GL_TRUE;
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mode->fbconfigID = config->vid;
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mode->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT;
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mode->rgbMode = (config->rgba != 0);
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mode->renderType = (mode->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
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mode->colorIndexMode = !(mode->rgbMode);
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mode->doubleBufferMode = (config->doubleBuffer != 0);
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mode->stereoMode = (config->stereo != 0);
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mode->haveAccumBuffer = ((config->accumRedSize +
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config->accumGreenSize +
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config->accumBlueSize +
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config->accumAlphaSize) > 0);
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mode->haveDepthBuffer = (config->depthSize > 0);
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mode->haveStencilBuffer = (config->stencilSize > 0);
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mode->redBits = config->redSize;
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mode->greenBits = config->greenSize;
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mode->blueBits = config->blueSize;
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mode->alphaBits = config->alphaSize;
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mode->redMask = config->redMask;
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mode->greenMask = config->greenMask;
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mode->blueMask = config->blueMask;
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mode->alphaMask = config->alphaMask;
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mode->rgbBits = mode->rgbMode ? config->bufferSize : 0;
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mode->indexBits = mode->colorIndexMode ? config->bufferSize : 0;
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mode->accumRedBits = config->accumRedSize;
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mode->accumGreenBits = config->accumGreenSize;
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mode->accumBlueBits = config->accumBlueSize;
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mode->accumAlphaBits = config->accumAlphaSize;
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mode->depthBits = config->depthSize;
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mode->stencilBits = config->stencilSize;
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mode->numAuxBuffers = config->auxBuffers;
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mode->level = config->level;
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mode->visualRating = config->visualRating;
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mode->transparentPixel = config->transparentPixel;
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mode->transparentRed = config->transparentRed;
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mode->transparentGreen = config->transparentGreen;
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mode->transparentBlue = config->transparentBlue;
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mode->transparentAlpha = config->transparentAlpha;
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mode->transparentIndex = config->transparentIndex;
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mode->samples = config->multiSampleSize;
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mode->sampleBuffers = config->nMultiSampleBuffers;
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/* mode->visualSelectGroup = config->visualSelectGroup; ? */
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mode->swapMethod = GLX_SWAP_UNDEFINED_OML;
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mode->bindToTextureRgb = (mode->rgbMode) ? GL_TRUE : GL_FALSE;
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mode->bindToTextureRgba = (mode->rgbMode && mode->alphaBits) ?
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GL_TRUE : GL_FALSE;
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mode->bindToMipmapTexture = mode->rgbMode ? GL_TRUE : GL_FALSE;
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mode->bindToTextureTargets = mode->rgbMode ?
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GLX_TEXTURE_1D_BIT_EXT |
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GLX_TEXTURE_2D_BIT_EXT |
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GLX_TEXTURE_RECTANGLE_BIT_EXT : 0;
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mode->yInverted = GL_FALSE;
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}
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/**
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* Get data from a GL context mode.
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*
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* \param mode GL context mode whose data is to be returned.
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* \param attribute Attribute of \c mode that is to be returned.
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* \param value_return Location to store the data member of \c mode.
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* \return If \c attribute is a valid attribute of \c mode, zero is
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* returned. Otherwise \c GLX_BAD_ATTRIBUTE is returned.
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*/
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int
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_gl_get_context_mode_data(const __GLcontextModes *mode, int attribute,
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int *value_return)
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{
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switch (attribute) {
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case GLX_USE_GL:
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*value_return = GL_TRUE;
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return 0;
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case GLX_BUFFER_SIZE:
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*value_return = mode->rgbBits;
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return 0;
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case GLX_RGBA:
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*value_return = mode->rgbMode;
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return 0;
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case GLX_RED_SIZE:
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*value_return = mode->redBits;
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return 0;
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case GLX_GREEN_SIZE:
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*value_return = mode->greenBits;
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return 0;
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case GLX_BLUE_SIZE:
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*value_return = mode->blueBits;
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return 0;
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case GLX_ALPHA_SIZE:
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*value_return = mode->alphaBits;
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return 0;
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case GLX_DOUBLEBUFFER:
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*value_return = mode->doubleBufferMode;
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return 0;
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case GLX_STEREO:
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*value_return = mode->stereoMode;
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return 0;
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case GLX_AUX_BUFFERS:
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*value_return = mode->numAuxBuffers;
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return 0;
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case GLX_DEPTH_SIZE:
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*value_return = mode->depthBits;
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return 0;
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case GLX_STENCIL_SIZE:
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*value_return = mode->stencilBits;
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return 0;
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case GLX_ACCUM_RED_SIZE:
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*value_return = mode->accumRedBits;
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return 0;
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case GLX_ACCUM_GREEN_SIZE:
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*value_return = mode->accumGreenBits;
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return 0;
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case GLX_ACCUM_BLUE_SIZE:
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*value_return = mode->accumBlueBits;
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return 0;
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case GLX_ACCUM_ALPHA_SIZE:
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*value_return = mode->accumAlphaBits;
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return 0;
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case GLX_LEVEL:
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*value_return = mode->level;
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return 0;
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case GLX_TRANSPARENT_TYPE_EXT:
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*value_return = mode->transparentPixel;
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return 0;
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case GLX_TRANSPARENT_RED_VALUE:
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*value_return = mode->transparentRed;
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return 0;
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case GLX_TRANSPARENT_GREEN_VALUE:
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*value_return = mode->transparentGreen;
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return 0;
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case GLX_TRANSPARENT_BLUE_VALUE:
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*value_return = mode->transparentBlue;
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return 0;
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case GLX_TRANSPARENT_ALPHA_VALUE:
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*value_return = mode->transparentAlpha;
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return 0;
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case GLX_TRANSPARENT_INDEX_VALUE:
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*value_return = mode->transparentIndex;
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return 0;
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case GLX_X_VISUAL_TYPE:
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*value_return = mode->visualType;
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return 0;
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case GLX_CONFIG_CAVEAT:
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*value_return = mode->visualRating;
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return 0;
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case GLX_VISUAL_ID:
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*value_return = mode->visualID;
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return 0;
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case GLX_DRAWABLE_TYPE:
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*value_return = mode->drawableType;
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return 0;
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case GLX_RENDER_TYPE:
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*value_return = mode->renderType;
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return 0;
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case GLX_X_RENDERABLE:
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*value_return = mode->xRenderable;
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return 0;
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case GLX_FBCONFIG_ID:
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*value_return = mode->fbconfigID;
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return 0;
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case GLX_MAX_PBUFFER_WIDTH:
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*value_return = mode->maxPbufferWidth;
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return 0;
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case GLX_MAX_PBUFFER_HEIGHT:
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*value_return = mode->maxPbufferHeight;
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return 0;
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case GLX_MAX_PBUFFER_PIXELS:
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*value_return = mode->maxPbufferPixels;
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return 0;
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case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
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*value_return = mode->optimalPbufferWidth;
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return 0;
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case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
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*value_return = mode->optimalPbufferHeight;
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return 0;
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case GLX_SWAP_METHOD_OML:
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*value_return = mode->swapMethod;
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return 0;
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case GLX_SAMPLE_BUFFERS_SGIS:
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*value_return = mode->sampleBuffers;
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return 0;
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case GLX_SAMPLES_SGIS:
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*value_return = mode->samples;
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return 0;
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case GLX_BIND_TO_TEXTURE_RGB_EXT:
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*value_return = mode->bindToTextureRgb;
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return 0;
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case GLX_BIND_TO_TEXTURE_RGBA_EXT:
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*value_return = mode->bindToTextureRgba;
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return 0;
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case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
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*value_return = mode->bindToMipmapTexture == GL_TRUE ? GL_TRUE :
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GL_FALSE;
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return 0;
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case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
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*value_return = mode->bindToTextureTargets;
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return 0;
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case GLX_Y_INVERTED_EXT:
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*value_return = mode->yInverted;
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return 0;
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/* Applications are NOT allowed to query GLX_VISUAL_SELECT_GROUP_SGIX.
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* It is ONLY for communication between the GLX client and the GLX
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* server.
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*/
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case GLX_VISUAL_SELECT_GROUP_SGIX:
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default:
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return GLX_BAD_ATTRIBUTE;
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}
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}
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#endif /* !defined(IN_MINI_GLX) */
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/**
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* Allocate a linked list of \c __GLcontextModes structures. The fields of
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* each structure will be initialized to "reasonable" default values. In
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* most cases this is the default value defined by table 3.4 of the GLX
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* 1.3 specification. This means that most values are either initialized to
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* zero or \c GLX_DONT_CARE (which is -1). As support for additional
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* extensions is added, the new values will be initialized to appropriate
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* values from the extension specification.
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*
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* \param count Number of structures to allocate.
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* \param minimum_size Minimum size of a structure to allocate. This allows
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* for differences in the version of the
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* \c __GLcontextModes stucture used in libGL and in a
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* DRI-based driver.
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* \returns A pointer to the first element in a linked list of \c count
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* stuctures on success, or \c NULL on failure.
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*
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* \warning Use of \c minimum_size does \b not guarantee binary compatibility.
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* The fundamental assumption is that if the \c minimum_size
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* specified by the driver and the size of the \c __GLcontextModes
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* structure in libGL is the same, then the meaning of each byte in
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* the structure is the same in both places. \b Be \b careful!
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* Basically this means that fields have to be added in libGL and
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* then propagated to drivers. Drivers should \b never arbitrarilly
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* extend the \c __GLcontextModes data-structure.
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*/
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__GLcontextModes *
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_gl_context_modes_create(unsigned count, size_t minimum_size)
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{
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const size_t size = (minimum_size > sizeof(__GLcontextModes))
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? minimum_size : sizeof(__GLcontextModes);
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__GLcontextModes * base = NULL;
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__GLcontextModes ** next;
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unsigned i;
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next = &base;
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for (i = 0; i < count; i++) {
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*next = (__GLcontextModes *)_mesa_malloc(size);
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if (*next == NULL) {
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_gl_context_modes_destroy(base);
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base = NULL;
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break;
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}
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(void)_mesa_memset(*next, 0, size);
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(*next)->visualID = GLX_DONT_CARE;
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(*next)->visualType = GLX_DONT_CARE;
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(*next)->visualRating = GLX_NONE;
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(*next)->transparentPixel = GLX_NONE;
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(*next)->transparentRed = GLX_DONT_CARE;
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(*next)->transparentGreen = GLX_DONT_CARE;
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(*next)->transparentBlue = GLX_DONT_CARE;
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(*next)->transparentAlpha = GLX_DONT_CARE;
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(*next)->transparentIndex = GLX_DONT_CARE;
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(*next)->xRenderable = GLX_DONT_CARE;
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(*next)->fbconfigID = GLX_DONT_CARE;
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(*next)->swapMethod = GLX_SWAP_UNDEFINED_OML;
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(*next)->bindToTextureRgb = GLX_DONT_CARE;
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(*next)->bindToTextureRgba = GLX_DONT_CARE;
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(*next)->bindToMipmapTexture = GLX_DONT_CARE;
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(*next)->bindToTextureTargets = GLX_DONT_CARE;
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(*next)->yInverted = GLX_DONT_CARE;
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next = &((*next)->next);
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}
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return base;
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}
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/**
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* Destroy a linked list of \c __GLcontextModes structures created by
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* \c _gl_context_modes_create.
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*
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* \param modes Linked list of structures to be destroyed. All structres
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* in the list will be freed.
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*/
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void
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_gl_context_modes_destroy(__GLcontextModes * modes)
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{
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while (modes != NULL) {
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__GLcontextModes * const next = modes->next;
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_mesa_free(modes);
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modes = next;
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}
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}
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/**
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* Find a context mode matching a Visual ID.
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*
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* \param modes List list of context-mode structures to be searched.
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* \param vid Visual ID to be found.
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* \returns A pointer to a context-mode in \c modes if \c vid was found in
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* the list, or \c NULL if it was not.
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*/
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__GLcontextModes *
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_gl_context_modes_find_visual(__GLcontextModes *modes, int vid)
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{
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__GLcontextModes *m;
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for (m = modes; m != NULL; m = m->next)
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if (m->visualID == vid)
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return m;
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|
return NULL;
|
|
}
|
|
|
|
__GLcontextModes *
|
|
_gl_context_modes_find_fbconfig(__GLcontextModes *modes, int fbid)
|
|
{
|
|
__GLcontextModes *m;
|
|
|
|
for (m = modes; m != NULL; m = m->next)
|
|
if (m->fbconfigID == fbid)
|
|
return m;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* Determine if two context-modes are the same. This is intended to be used
|
|
* by libGL implementations to compare to sets of driver generated FBconfigs.
|
|
*
|
|
* \param a Context-mode to be compared.
|
|
* \param b Context-mode to be compared.
|
|
* \returns \c GL_TRUE if the two context-modes are the same. \c GL_FALSE is
|
|
* returned otherwise.
|
|
*/
|
|
GLboolean
|
|
_gl_context_modes_are_same(const __GLcontextModes * a,
|
|
const __GLcontextModes * b)
|
|
{
|
|
return ((a->rgbMode == b->rgbMode) &&
|
|
(a->floatMode == b->floatMode) &&
|
|
(a->colorIndexMode == b->colorIndexMode) &&
|
|
(a->doubleBufferMode == b->doubleBufferMode) &&
|
|
(a->stereoMode == b->stereoMode) &&
|
|
(a->redBits == b->redBits) &&
|
|
(a->greenBits == b->greenBits) &&
|
|
(a->blueBits == b->blueBits) &&
|
|
(a->alphaBits == b->alphaBits) &&
|
|
#if 0 /* For some reason these don't get set on the client-side in libGL. */
|
|
(a->redMask == b->redMask) &&
|
|
(a->greenMask == b->greenMask) &&
|
|
(a->blueMask == b->blueMask) &&
|
|
(a->alphaMask == b->alphaMask) &&
|
|
#endif
|
|
(a->rgbBits == b->rgbBits) &&
|
|
(a->indexBits == b->indexBits) &&
|
|
(a->accumRedBits == b->accumRedBits) &&
|
|
(a->accumGreenBits == b->accumGreenBits) &&
|
|
(a->accumBlueBits == b->accumBlueBits) &&
|
|
(a->accumAlphaBits == b->accumAlphaBits) &&
|
|
(a->depthBits == b->depthBits) &&
|
|
(a->stencilBits == b->stencilBits) &&
|
|
(a->numAuxBuffers == b->numAuxBuffers) &&
|
|
(a->level == b->level) &&
|
|
(a->pixmapMode == b->pixmapMode) &&
|
|
(a->visualRating == b->visualRating) &&
|
|
|
|
(a->transparentPixel == b->transparentPixel) &&
|
|
|
|
((a->transparentPixel != GLX_TRANSPARENT_RGB) ||
|
|
((a->transparentRed == b->transparentRed) &&
|
|
(a->transparentGreen == b->transparentGreen) &&
|
|
(a->transparentBlue == b->transparentBlue) &&
|
|
(a->transparentAlpha == b->transparentAlpha))) &&
|
|
|
|
((a->transparentPixel != GLX_TRANSPARENT_INDEX) ||
|
|
(a->transparentIndex == b->transparentIndex)) &&
|
|
|
|
(a->sampleBuffers == b->sampleBuffers) &&
|
|
(a->samples == b->samples) &&
|
|
((a->drawableType & b->drawableType) != 0) &&
|
|
(a->renderType == b->renderType) &&
|
|
(a->maxPbufferWidth == b->maxPbufferWidth) &&
|
|
(a->maxPbufferHeight == b->maxPbufferHeight) &&
|
|
(a->maxPbufferPixels == b->maxPbufferPixels) &&
|
|
(a->optimalPbufferWidth == b->optimalPbufferWidth) &&
|
|
(a->optimalPbufferHeight == b->optimalPbufferHeight) &&
|
|
(a->swapMethod == b->swapMethod) &&
|
|
(a->bindToTextureRgb == b->bindToTextureRgb) &&
|
|
(a->bindToTextureRgba == b->bindToTextureRgba) &&
|
|
(a->bindToMipmapTexture == b->bindToMipmapTexture) &&
|
|
(a->bindToTextureTargets == b->bindToTextureTargets) &&
|
|
(a->yInverted == b->yInverted));
|
|
}
|