xenocara/dist/Mesa/include/GL/internal/dri_interface.h

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/*
* Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
* (C) Copyright IBM Corporation 2004
* 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
* THE COPYRIGHT HOLDERS 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 dri_interface.h
*
* This file contains all the types and functions that define the interface
* between a DRI driver and driver loader. Currently, the most common driver
* loader is the XFree86 libGL.so. However, other loaders do exist, and in
* the future the server-side libglx.a will also be a loader.
*
* \author Kevin E. Martin <kevin@precisioninsight.com>
* \author Ian Romanick <idr@us.ibm.com>
*/
#ifndef DRI_INTERFACE_H
#define DRI_INTERFACE_H
#include <GL/internal/glcore.h>
#include <drm.h>
/**
* \name DRI interface structures
*
* The following structures define the interface between the GLX client
* side library and the DRI (direct rendering infrastructure).
*/
/*@{*/
typedef struct __DRIdisplayRec __DRIdisplay;
typedef struct __DRIscreenRec __DRIscreen;
typedef struct __DRIcontextRec __DRIcontext;
typedef struct __DRIdrawableRec __DRIdrawable;
typedef struct __DRIdriverRec __DRIdriver;
typedef struct __DRIframebufferRec __DRIframebuffer;
typedef struct __DRIversionRec __DRIversion;
typedef struct __DRIinterfaceMethodsRec __DRIinterfaceMethods;
typedef unsigned long __DRIid;
typedef void __DRInativeDisplay;
/*@}*/
/**
* \name Functions provided by the driver loader.
*/
/*@{*/
/**
* Type of a pointer to \c glXGetScreenDriver, as returned by
* \c glXGetProcAddress. This function is used to get the name of the DRI
* driver for the specified screen of the specified display. The driver
* name is typically used with \c glXGetDriverConfig.
*
* \sa glXGetScreenDriver, glXGetProcAddress, glXGetDriverConfig
*/
typedef const char * (* PFNGLXGETSCREENDRIVERPROC) (__DRInativeDisplay *dpy, int scrNum);
/**
* Type of a pointer to \c glXGetDriverConfig, as returned by
* \c glXGetProcAddress. This function is used to get the XML document
* describing the configuration options available for the specified driver.
*
* \sa glXGetDriverConfig, glXGetProcAddress, glXGetScreenDriver
*/
typedef const char * (* PFNGLXGETDRIVERCONFIGPROC) (const char *driverName);
/**
* Type of a pointer to \c glxEnableExtension, as returned by
* \c __DRIinterfaceMethods::getProcAddress. This function is used to enable
* a GLX extension on the specified screen.
*/
typedef void (* PFNGLXSCRENABLEEXTENSIONPROC) ( void *psc, const char * name );
/*@}*/
/**
* \name Functions and data provided by the driver.
*/
/*@{*/
typedef void *(CREATENEWSCREENFUNC)(__DRInativeDisplay *dpy, int scrn,
__DRIscreen *psc, const __GLcontextModes * modes,
const __DRIversion * ddx_version, const __DRIversion * dri_version,
const __DRIversion * drm_version, const __DRIframebuffer * frame_buffer,
void * pSAREA, int fd, int internal_api_version,
const __DRIinterfaceMethods * interface,
__GLcontextModes ** driver_modes);
typedef CREATENEWSCREENFUNC* PFNCREATENEWSCREENFUNC;
extern CREATENEWSCREENFUNC __driCreateNewScreen_20050727;
/**
* XML document describing the configuration options supported by the
* driver.
*/
extern const char __driConfigOptions[];
/*@}*/
/**
* Stored version of some component (i.e., server-side DRI module, kernel-side
* DRM, etc.).
*
* \todo
* There are several data structures that explicitly store a major version,
* minor version, and patch level. These structures should be modified to
* have a \c __DRIversionRec instead.
*/
struct __DRIversionRec {
int major; /**< Major version number. */
int minor; /**< Minor version number. */
int patch; /**< Patch-level. */
};
typedef void (*__DRIfuncPtr)(void);
struct __DRIinterfaceMethodsRec {
/**
* Get pointer to named function.
*/
__DRIfuncPtr (*getProcAddress)( const char * proc_name );
/**
* Create a list of \c __GLcontextModes structures.
*/
__GLcontextModes * (*createContextModes)(unsigned count,
size_t minimum_bytes_per_struct);
/**
* Destroy a list of \c __GLcontextModes structures.
*
* \todo
* Determine if the drivers actually need to call this.
*/
void (*destroyContextModes)( __GLcontextModes * modes );
/**
* Get the \c __DRIscreen for a given display and screen number.
*/
__DRIscreen *(*getScreen)(__DRInativeDisplay *dpy, int screenNum);
/**
* \name Client/server protocol functions.
*
* These functions implement the DRI client/server protocol for
* context and drawable operations. Platforms that do not implement
* the wire protocol (e.g., EGL) will implement glorified no-op functions.
*/
/*@{*/
/**
* Determine if the specified window ID still exists.
*
* \note
* Implementations may assume that the driver will only pass an ID into
* this function that actually corresponds to a window. On
* implementations where windows can only be destroyed by the DRI driver
* (e.g., EGL), this function is allowed to always return \c GL_TRUE.
*/
GLboolean (*windowExists)(__DRInativeDisplay *dpy, __DRIid draw);
/**
* Create the server-side portion of the GL context.
*/
GLboolean (* createContext)( __DRInativeDisplay *dpy, int screenNum,
int configID, void * contextID, drm_context_t * hw_context );
/**
* Destroy the server-side portion of the GL context.
*/
GLboolean (* destroyContext)( __DRInativeDisplay *dpy, int screenNum,
__DRIid context );
/**
* Create the server-side portion of the drawable.
*/
GLboolean (*createDrawable)( __DRInativeDisplay * ndpy, int screen,
__DRIid drawable, drm_drawable_t * hHWDrawable );
/**
* Destroy the server-side portion of the drawable.
*/
GLboolean (*destroyDrawable)( __DRInativeDisplay * ndpy, int screen,
__DRIid drawable );
/**
* This function is used to get information about the position, size, and
* clip rects of a drawable.
*/
GLboolean (* getDrawableInfo) ( __DRInativeDisplay *dpy, int scrn,
__DRIid draw, unsigned int * index, unsigned int * stamp,
int * x, int * y, int * width, int * height,
int * numClipRects, drm_clip_rect_t ** pClipRects,
int * backX, int * backY,
int * numBackClipRects, drm_clip_rect_t ** pBackClipRects );
/*@}*/
/**
* \name Timing related functions.
*/
/*@{*/
/**
* Get the 64-bit unadjusted system time (UST).
*/
int (*getUST)(int64_t * ust);
/**
* Get the media stream counter (MSC) rate.
*
* Matching the definition in GLX_OML_sync_control, this function returns
* the rate of the "media stream counter". In practical terms, this is
* the frame refresh rate of the display.
*/
GLboolean (*getMSCRate)(__DRInativeDisplay * dpy, __DRIid drawable,
int32_t * numerator, int32_t * denominator);
/*@}*/
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/**
* Reports areas of the given drawable which have been modified by the
* driver.
*
* \param drawable which the drawing was done to.
* \param rects rectangles affected, with the drawable origin as the
* origin.
* \param x X offset of the drawable within the screen (used in the
* front_buffer case)
* \param y Y offset of the drawable within the screen.
* \param front_buffer boolean flag for whether the drawing to the
* drawable was actually done directly to the front buffer (instead
* of backing storage, for example)
*/
void (*reportDamage)(__DRInativeDisplay * dpy, int screen,
__DRIid drawable,
int x, int y,
drm_clip_rect_t *rects, int num_rects,
int front_buffer);
};
/**
* Framebuffer information record. Used by libGL to communicate information
* about the framebuffer to the driver's \c __driCreateNewScreen function.
*
* In XFree86, most of this information is derrived from data returned by
* calling \c XF86DRIGetDeviceInfo.
*
* \sa XF86DRIGetDeviceInfo __DRIdisplayRec::createNewScreen
* __driUtilCreateNewScreen CallCreateNewScreen
*
* \bug This structure could be better named.
*/
struct __DRIframebufferRec {
unsigned char *base; /**< Framebuffer base address in the CPU's
* address space. This value is calculated by
* calling \c drmMap on the framebuffer handle
* returned by \c XF86DRIGetDeviceInfo (or a
* similar function).
*/
int size; /**< Framebuffer size, in bytes. */
int stride; /**< Number of bytes from one line to the next. */
int width; /**< Pixel width of the framebuffer. */
int height; /**< Pixel height of the framebuffer. */
int dev_priv_size; /**< Size of the driver's dev-priv structure. */
void *dev_priv; /**< Pointer to the driver's dev-priv structure. */
};
/**
* Screen dependent methods. This structure is initialized during the
* \c __DRIdisplayRec::createScreen call.
*/
struct __DRIscreenRec {
/**
* Method to destroy the private DRI screen data.
*/
void (*destroyScreen)(__DRInativeDisplay *dpy, int scrn, void *screenPrivate);
/**
* Method to create the private DRI drawable data and initialize the
* drawable dependent methods.
*/
void *(*createNewDrawable)(__DRInativeDisplay *dpy, const __GLcontextModes *modes,
__DRIid draw, __DRIdrawable *pdraw,
int renderType, const int *attrs);
/**
* Method to return a pointer to the DRI drawable data.
*/
__DRIdrawable *(*getDrawable)(__DRInativeDisplay *dpy, __DRIid draw,
void *drawablePrivate);
/**
* Opaque pointer to private per screen direct rendering data. \c NULL
* if direct rendering is not supported on this screen. Never
* dereferenced in libGL.
*/
void *private;
/**
* Get the number of vertical refreshes since some point in time before
* this function was first called (i.e., system start up).
*
* \since Internal API version 20030317.
*/
int (*getMSC)( void *screenPrivate, int64_t *msc );
/**
* Opaque pointer that points back to the containing
* \c __GLXscreenConfigs. This data structure is shared with DRI drivers
* but \c __GLXscreenConfigs is not. However, they are needed by some GLX
* functions called by DRI drivers.
*
* \since Internal API version 20030813.
*/
void *screenConfigs;
/**
* Functions associated with MESA_allocate_memory.
*
* \since Internal API version 20030815.
*/
/*@{*/
void *(*allocateMemory)(__DRInativeDisplay *dpy, int scrn, GLsizei size,
GLfloat readfreq, GLfloat writefreq,
GLfloat priority);
void (*freeMemory)(__DRInativeDisplay *dpy, int scrn, GLvoid *pointer);
GLuint (*memoryOffset)(__DRInativeDisplay *dpy, int scrn, const GLvoid *pointer);
/*@}*/
/**
* Method to create the private DRI context data and initialize the
* context dependent methods.
*
* \since Internal API version 20031201.
*/
void * (*createNewContext)(__DRInativeDisplay *dpy, const __GLcontextModes *modes,
int render_type,
void *sharedPrivate, __DRIcontext *pctx);
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/**
* Method to override base texture image with a driver specific 'offset'.
* The depth passed in allows e.g. to ignore the alpha channel of texture
* images where the non-alpha components don't occupy a whole texel.
*
* For GLX_EXT_texture_from_pixmap with AIGLX.
*
* \since Internal API version 20070121.
*/
void (*setTexOffset)(__DRIcontext *pDRICtx, GLint texname,
unsigned long long offset, GLint depth, GLuint pitch);
};
/**
* Context dependent methods. This structure is initialized during the
* \c __DRIscreenRec::createContext call.
*/
struct __DRIcontextRec {
/**
* Method to destroy the private DRI context data.
*/
void (*destroyContext)(__DRInativeDisplay *dpy, int scrn, void *contextPrivate);
/**
* Opaque pointer to private per context direct rendering data.
* \c NULL if direct rendering is not supported on the display or
* screen used to create this context. Never dereferenced in libGL.
*/
void *private;
/**
* Pointer to the mode used to create this context.
*
* \since Internal API version 20040317.
*/
const __GLcontextModes * mode;
/**
* Method to bind a DRI drawable to a DRI graphics context.
*
* \since Internal API version 20050727.
*/
GLboolean (*bindContext)(__DRInativeDisplay *dpy, int scrn, __DRIid draw,
__DRIid read, __DRIcontext *ctx);
/**
* Method to unbind a DRI drawable from a DRI graphics context.
*
* \since Internal API version 20050727.
*/
GLboolean (*unbindContext)(__DRInativeDisplay *dpy, int scrn, __DRIid draw,
__DRIid read, __DRIcontext *ctx);
};
/**
* Drawable dependent methods. This structure is initialized during the
* \c __DRIscreenRec::createDrawable call. \c createDrawable is not called
* by libGL at this time. It's currently used via the dri_util.c utility code
* instead.
*/
struct __DRIdrawableRec {
/**
* Method to destroy the private DRI drawable data.
*/
void (*destroyDrawable)(__DRInativeDisplay *dpy, void *drawablePrivate);
/**
* Method to swap the front and back buffers.
*/
void (*swapBuffers)(__DRInativeDisplay *dpy, void *drawablePrivate);
/**
* Opaque pointer to private per drawable direct rendering data.
* \c NULL if direct rendering is not supported on the display or
* screen used to create this drawable. Never dereferenced in libGL.
*/
void *private;
/**
* Get the number of completed swap buffers for this drawable.
*
* \since Internal API version 20030317.
*/
int (*getSBC)(__DRInativeDisplay *dpy, void *drawablePrivate, int64_t *sbc );
/**
* Wait for the SBC to be greater than or equal target_sbc.
*
* \since Internal API version 20030317.
*/
int (*waitForSBC)( __DRInativeDisplay * dpy, void *drawablePriv,
int64_t target_sbc,
int64_t * msc, int64_t * sbc );
/**
* Wait for the MSC to equal target_msc, or, if that has already passed,
* the next time (MSC % divisor) is equal to remainder. If divisor is
* zero, the function will return as soon as MSC is greater than or equal
* to target_msc.
*
* \since Internal API version 20030317.
*/
int (*waitForMSC)( __DRInativeDisplay * dpy, void *drawablePriv,
int64_t target_msc, int64_t divisor, int64_t remainder,
int64_t * msc, int64_t * sbc );
/**
* Like \c swapBuffers, but does NOT have an implicit \c glFlush. Once
* rendering is complete, waits until MSC is equal to target_msc, or
* if that has already passed, waits until (MSC % divisor) is equal
* to remainder. If divisor is zero, the swap will happen as soon as
* MSC is greater than or equal to target_msc.
*
* \since Internal API version 20030317.
*/
int64_t (*swapBuffersMSC)(__DRInativeDisplay *dpy, void *drawablePrivate,
int64_t target_msc,
int64_t divisor, int64_t remainder);
/**
* Enable or disable frame usage tracking.
*
* \since Internal API version 20030317.
*/
int (*frameTracking)(__DRInativeDisplay *dpy, void *drawablePrivate, GLboolean enable);
/**
* Retrieve frame usage information.
*
* \since Internal API version 20030317.
*/
int (*queryFrameTracking)(__DRInativeDisplay *dpy, void *drawablePrivate,
int64_t * sbc, int64_t * missedFrames,
float * lastMissedUsage, float * usage );
/**
* Used by drivers that implement the GLX_SGI_swap_control or
* GLX_MESA_swap_control extension.
*
* \since Internal API version 20030317.
*/
unsigned swap_interval;
/**
* Used by drivers that implement the GLX_MESA_copy_sub_buffer extension.
*
* \since Internal API version 20060314.
*/
void (*copySubBuffer)(__DRInativeDisplay *dpy, void *drawablePrivate,
int x, int y, int w, int h);
};
#endif