478 lines
16 KiB
C
478 lines
16 KiB
C
/*
|
|
* 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);
|
|
/*@}*/
|
|
};
|
|
|
|
|
|
/**
|
|
* 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);
|
|
};
|
|
|
|
/**
|
|
* 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;
|
|
};
|
|
|
|
#endif
|