diff options
Diffstat (limited to 'src/mesa/drivers/dri/common/glcontextmodes.c')
| -rw-r--r-- | src/mesa/drivers/dri/common/glcontextmodes.c | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/common/glcontextmodes.c b/src/mesa/drivers/dri/common/glcontextmodes.c new file mode 100644 index 00000000000..784ad30259b --- /dev/null +++ b/src/mesa/drivers/dri/common/glcontextmodes.c @@ -0,0 +1,483 @@ +/* + * (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 <[email protected]> + */ + +#include <X11/X.h> +#include <GL/glx.h> +#include "GL/glxint.h" + +#ifdef XFree86Server +# include "GL/glx_ansic.h" +extern void * __glXMalloc( size_t size ); +extern void __glXFree( void * ptr ); +# define Xmalloc __glXMalloc +# define Xfree __glXFree +#else +# include <X11/Xlibint.h> +# define __glXMemset memset +#endif /* XFree86Server */ + +#include "glcontextmodes.h" + +#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 derrived 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) __glXMemset( 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 = config->bufferSize; + mode->indexBits = config->bufferSize; + + 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->swapMethod = GLX_SWAP_UNDEFINED_OML; +} + + +/** + * 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, \c Success 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 Success; + case GLX_BUFFER_SIZE: + *value_return = mode->rgbBits; + return Success; + case GLX_RGBA: + *value_return = mode->rgbMode; + return Success; + case GLX_RED_SIZE: + *value_return = mode->redBits; + return Success; + case GLX_GREEN_SIZE: + *value_return = mode->greenBits; + return Success; + case GLX_BLUE_SIZE: + *value_return = mode->blueBits; + return Success; + case GLX_ALPHA_SIZE: + *value_return = mode->alphaBits; + return Success; + case GLX_DOUBLEBUFFER: + *value_return = mode->doubleBufferMode; + return Success; + case GLX_STEREO: + *value_return = mode->stereoMode; + return Success; + case GLX_AUX_BUFFERS: + *value_return = mode->numAuxBuffers; + return Success; + case GLX_DEPTH_SIZE: + *value_return = mode->depthBits; + return Success; + case GLX_STENCIL_SIZE: + *value_return = mode->stencilBits; + return Success; + case GLX_ACCUM_RED_SIZE: + *value_return = mode->accumRedBits; + return Success; + case GLX_ACCUM_GREEN_SIZE: + *value_return = mode->accumGreenBits; + return Success; + case GLX_ACCUM_BLUE_SIZE: + *value_return = mode->accumBlueBits; + return Success; + case GLX_ACCUM_ALPHA_SIZE: + *value_return = mode->accumAlphaBits; + return Success; + case GLX_LEVEL: + *value_return = mode->level; + return Success; + case GLX_TRANSPARENT_TYPE_EXT: + *value_return = mode->transparentPixel; + return Success; + case GLX_TRANSPARENT_RED_VALUE: + *value_return = mode->transparentRed; + return Success; + case GLX_TRANSPARENT_GREEN_VALUE: + *value_return = mode->transparentGreen; + return Success; + case GLX_TRANSPARENT_BLUE_VALUE: + *value_return = mode->transparentBlue; + return Success; + case GLX_TRANSPARENT_ALPHA_VALUE: + *value_return = mode->transparentAlpha; + return Success; + case GLX_TRANSPARENT_INDEX_VALUE: + *value_return = mode->transparentIndex; + return Success; + case GLX_X_VISUAL_TYPE: + *value_return = mode->visualType; + return Success; + case GLX_CONFIG_CAVEAT: + *value_return = mode->visualRating; + return Success; + case GLX_VISUAL_ID: + *value_return = mode->visualID; + return Success; + case GLX_DRAWABLE_TYPE: + *value_return = mode->drawableType; + return Success; + case GLX_RENDER_TYPE: + *value_return = mode->renderType; + return Success; + case GLX_X_RENDERABLE: + *value_return = mode->xRenderable; + return Success; + case GLX_FBCONFIG_ID: + *value_return = mode->fbconfigID; + return Success; + case GLX_MAX_PBUFFER_WIDTH: + *value_return = mode->maxPbufferWidth; + return Success; + case GLX_MAX_PBUFFER_HEIGHT: + *value_return = mode->maxPbufferHeight; + return Success; + case GLX_MAX_PBUFFER_PIXELS: + *value_return = mode->maxPbufferPixels; + return Success; + case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX: + *value_return = mode->optimalPbufferWidth; + return Success; + case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX: + *value_return = mode->optimalPbufferHeight; + return Success; + case GLX_SWAP_METHOD_OML: + *value_return = mode->swapMethod; + return Success; + case GLX_SAMPLE_BUFFERS_SGIS: + *value_return = mode->sampleBuffers; + return Success; + case GLX_SAMPLES_SGIS: + *value_return = mode->samples; + return Success; + + /* 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 __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 *) Xmalloc( size ); + if ( *next == NULL ) { + _gl_context_modes_destroy( base ); + base = NULL; + break; + } + + (void) __glXMemset( *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 = & ((*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; + + Xfree( 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 ) +{ + while ( modes != NULL ) { + if ( modes->visualID == vid ) { + break; + } + + modes = modes->next; + } + + return modes; +} + + +/** + * 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) ); +} |