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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);
- /*@}*/
-
- /**
- * 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);
-
- /**
- * 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