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xserver/hw/xquartz/GL/glcontextmodes.c

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/*
* (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 glcontextmodes.c
* Utility routines for working with \c __GLcontextModes 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>
*/
#if defined(IN_MINI_GLX)
#include <GL/gl.h>
#else
#if defined(HAVE_DIX_CONFIG_H)
# include <dix-config.h>
#endif
#include <X11/X.h>
#include <GL/glx.h>
#include "GL/glxint.h"
#endif
/* Memory macros */
#if defined(IN_MINI_GLX)
# include <stdlib.h>
# include <string.h>
# define _mesa_malloc(b) malloc(b)
# define _mesa_free(m) free(m)
# define _mesa_memset memset
#else
# ifdef XFree86Server
# include <os.h>
# include <string.h>
# define _mesa_malloc(b) malloc(b)
# define _mesa_free(m) free(m)
# define _mesa_memset memset
# else
# include <X11/Xlibint.h>
# define _mesa_memset memset
# define _mesa_malloc(b) Xmalloc(b)
# define _mesa_free(m) free(m)
# endif /* XFree86Server */
#endif /* !defined(IN_MINI_GLX) */
#include "glcontextmodes.h"
#if !defined(IN_MINI_GLX)
#define NUM_VISUAL_TYPES 6
/**
* Convert an X visual type to a GLX visual type.
*
* \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.)
* to be converted.
* \return If \c visualType is a valid X visual type, a GLX visual type will
* be returned. Otherwise \c GLX_NONE will be returned.
*/
GLint
_gl_convert_from_x_visual_type( int visualType )
{
static const int glx_visual_types[ NUM_VISUAL_TYPES ] = {
GLX_STATIC_GRAY, GLX_GRAY_SCALE,
GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,
GLX_TRUE_COLOR, GLX_DIRECT_COLOR
};
return ( (unsigned) visualType < NUM_VISUAL_TYPES )
? glx_visual_types[ visualType ] : GLX_NONE;
}
/**
* Convert a GLX visual type to an X visual type.
*
* \param visualType GLX visual type (i.e., \c GLX_TRUE_COLOR,
* \c GLX_STATIC_GRAY, etc.) to be converted.
* \return If \c visualType is a valid GLX visual type, an X visual type will
* be returned. Otherwise -1 will be returned.
*/
GLint
_gl_convert_to_x_visual_type( int visualType )
{
static const int x_visual_types[ NUM_VISUAL_TYPES ] = {
TrueColor, DirectColor,
PseudoColor, StaticColor,
GrayScale, StaticGray
};
return ( (unsigned) (visualType - GLX_TRUE_COLOR) < NUM_VISUAL_TYPES )
? x_visual_types[ visualType - GLX_TRUE_COLOR ] : -1;
}
/**
* Copy a GLX visual config structure to a GL context mode structure. All
* of the fields in \c config are copied to \c mode. Additional fields in
* \c mode that can be derrived from the fields of \c config (i.e.,
* \c haveDepthBuffer) are also filled in. The remaining fields in \c mode
* that cannot be derived are set to default values.
*
* \param mode Destination GL context mode.
* \param config Source GLX visual config.
*
* \note
* The \c fbconfigID and \c visualID fields of the \c __GLcontextModes
* structure will be set to the \c vid of the \c __GLXvisualConfig structure.
*/
void
_gl_copy_visual_to_context_mode( __GLcontextModes * mode,
const __GLXvisualConfig * config )
{
__GLcontextModes * const next = mode->next;
(void) _mesa_memset( mode, 0, sizeof( __GLcontextModes ) );
mode->next = next;
mode->visualID = config->vid;
mode->visualType = _gl_convert_from_x_visual_type( config->class );
mode->xRenderable = GL_TRUE;
mode->fbconfigID = config->vid;
mode->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT;
mode->rgbMode = (config->rgba != 0);
mode->renderType = (mode->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
mode->colorIndexMode = !(mode->rgbMode);
mode->doubleBufferMode = (config->doubleBuffer != 0);
mode->stereoMode = (config->stereo != 0);
mode->haveAccumBuffer = ((config->accumRedSize +
config->accumGreenSize +
config->accumBlueSize +
config->accumAlphaSize) > 0);
mode->haveDepthBuffer = (config->depthSize > 0);
mode->haveStencilBuffer = (config->stencilSize > 0);
mode->redBits = config->redSize;
mode->greenBits = config->greenSize;
mode->blueBits = config->blueSize;
mode->alphaBits = config->alphaSize;
mode->redMask = config->redMask;
mode->greenMask = config->greenMask;
mode->blueMask = config->blueMask;
mode->alphaMask = config->alphaMask;
mode->rgbBits = mode->rgbMode ? config->bufferSize : 0;
mode->indexBits = mode->colorIndexMode ? config->bufferSize : 0;
mode->accumRedBits = config->accumRedSize;
mode->accumGreenBits = config->accumGreenSize;
mode->accumBlueBits = config->accumBlueSize;
mode->accumAlphaBits = config->accumAlphaSize;
mode->depthBits = config->depthSize;
mode->stencilBits = config->stencilSize;
mode->numAuxBuffers = config->auxBuffers;
mode->level = config->level;
mode->visualRating = config->visualRating;
mode->transparentPixel = config->transparentPixel;
mode->transparentRed = config->transparentRed;
mode->transparentGreen = config->transparentGreen;
mode->transparentBlue = config->transparentBlue;
mode->transparentAlpha = config->transparentAlpha;
mode->transparentIndex = config->transparentIndex;
mode->samples = config->multiSampleSize;
mode->sampleBuffers = config->nMultiSampleBuffers;
/* mode->visualSelectGroup = config->visualSelectGroup; ? */
mode->swapMethod = GLX_SWAP_UNDEFINED_OML;
mode->bindToTextureRgb = (mode->rgbMode) ? GL_TRUE : GL_FALSE;
mode->bindToTextureRgba = (mode->rgbMode && mode->alphaBits) ?
GL_TRUE : GL_FALSE;
mode->bindToMipmapTexture = mode->rgbMode ? GL_TRUE : GL_FALSE;
mode->bindToTextureTargets = mode->rgbMode ?
GLX_TEXTURE_1D_BIT_EXT | GLX_TEXTURE_2D_BIT_EXT |
GLX_TEXTURE_RECTANGLE_BIT_EXT : 0;
mode->yInverted = GL_FALSE;
}
/**
* Get data from a GL context mode.
*
* \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.
*/
int
_gl_get_context_mode_data(const __GLcontextModes *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;
case GLX_TRANSPARENT_TYPE_EXT:
*value_return = mode->transparentPixel;
return 0;
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;
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;
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;
}
}
#endif /* !defined(IN_MINI_GLX) */
/**
* Allocate a linked list of \c __GLcontextModes 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 __GLcontextModes 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.
*
* \warning Use of \c minimum_size does \b not guarantee binary compatibility.
* The fundamental assumption is that if the \c minimum_size
* specified by the driver and the size of the \c __GLcontextModes
* structure in libGL is the same, then the meaning of each byte in
* the structure is the same in both places. \b Be \b careful!
* Basically this means that fields have to be added in libGL and
* then propagated to drivers. Drivers should \b never arbitrarilly
* extend the \c __GLcontextModes data-structure.
*/
__GLcontextModes *
_gl_context_modes_create( unsigned count, size_t minimum_size )
{
const size_t size = (minimum_size > sizeof( __GLcontextModes ))
? minimum_size : sizeof( __GLcontextModes );
__GLcontextModes * base = NULL;
__GLcontextModes ** next;
unsigned i;
next = & base;
for ( i = 0 ; i < count ; i++ ) {
*next = (__GLcontextModes *) _mesa_malloc( size );
if ( *next == NULL ) {
_gl_context_modes_destroy( base );
base = NULL;
break;
}
(void) _mesa_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;
}
/**
* Destroy a linked list of \c __GLcontextModes structures created by
* \c _gl_context_modes_create.
*
* \param modes Linked list of structures to be destroyed. All structres
* in the list will be freed.
*/
void
_gl_context_modes_destroy( __GLcontextModes * modes )
{
while ( modes != NULL ) {
__GLcontextModes * const next = modes->next;
_mesa_free( modes );
modes = 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.
*/
__GLcontextModes *
_gl_context_modes_find_visual(__GLcontextModes *modes, int vid)
{
__GLcontextModes *m;
for (m = modes; m != NULL; m = m->next)
if (m->visualID == vid)
return m;
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) );
}
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