Merge branch 'master' of git+ssh://joukj@git.freedesktop.org/git/mesa/mesa

1 files changed, 205 insertions, 227 deletions

diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h
index 8d24e311f8..1b637afaf3 100644
--- a/include/GL/internal/dri_interface.h
+++ b/include/GL/internal/dri_interface.h
@@ -48,65 +48,210 @@
  * 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;
+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 struct __DRIextensionRec		__DRIextension;
+typedef struct __DRIcopySubBufferExtensionRec	__DRIcopySubBufferExtension;
+typedef struct __DRIswapControlExtensionRec	__DRIswapControlExtension;
+typedef struct __DRIallocateExtensionRec	__DRIallocateExtension;
+typedef struct __DRIframeTrackingExtensionRec	__DRIframeTrackingExtension;
+typedef struct __DRImediaStreamCounterExtensionRec	__DRImediaStreamCounterExtension;
+typedef struct __DRItexOffsetExtensionRec	__DRItexOffsetExtension;
 /*@}*/
 
 
 /**
- * \name Functions provided by the driver loader.
+ * Extension struct.  Drivers 'inherit' from this struct by embedding
+ * it as the first element in the extension struct.  The
+ * __DRIscreen::getExtensions entry point will return a list of these
+ * structs and the loader can use the extensions it knows about by
+ * casting it to a more specific extension and optionally advertising
+ * the GLX extension.  See below for examples.
+ *
+ * We never break API in for a DRI extension.  If we need to change
+ * the way things work in a non-backwards compatible manner, we
+ * introduce a new extension.  During a transition period, we can
+ * leave both the old and the new extension in the driver, which
+ * allows us to move to the new interface without having to update the
+ * loader(s) in lock step.
+ *
+ * However, we can add entry points to an extension over time as long
+ * as we don't break the old ones.  As we add entry points to an
+ * extension, we increase the version number.  The corresponding
+ * #define can be used to guard code that accesses the new entry
+ * points at compile time and the version field in the extension
+ * struct can be used at run-time to determine how to use the
+ * extension.
  */
-/*@{*/
+struct __DRIextensionRec {
+    const char *name;
+    int version;
+};
+
 /**
- * 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
+ * Used by drivers to indicate support for setting the read drawable.
  */
-typedef const char * (* PFNGLXGETSCREENDRIVERPROC) (__DRInativeDisplay *dpy, int scrNum);
+#define __DRI_READ_DRAWABLE "DRI_ReadDrawable"
+#define __DRI_READ_DRAWABLE_VERSION 1
 
 /**
- * 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
+ * Used by drivers that implement the GLX_MESA_copy_sub_buffer extension.
  */
-typedef const char * (* PFNGLXGETDRIVERCONFIGPROC) (const char *driverName);
+#define __DRI_COPY_SUB_BUFFER "DRI_CopySubBuffer"
+#define __DRI_COPY_SUB_BUFFER_VERSION 1
+struct __DRIcopySubBufferExtensionRec {
+    __DRIextension base;
+    void (*copySubBuffer)(__DRIdrawable *drawable, int x, int y, int w, int h);
+};
 
 /**
- * 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.
+ * Used by drivers that implement the GLX_SGI_swap_control or
+ * GLX_MESA_swap_control extension.
  */
-typedef void (* PFNGLXSCRENABLEEXTENSIONPROC) ( void *psc, const char * name );
-/*@}*/
+#define __DRI_SWAP_CONTROL "DRI_SwapControl"
+#define __DRI_SWAP_CONTROL_VERSION 1
+struct __DRIswapControlExtensionRec {
+    __DRIextension base;
+    void (*setSwapInterval)(__DRIdrawable *drawable, unsigned int inteval);
+    unsigned int (*getSwapInterval)(__DRIdrawable *drawable);
+};
+
+/**
+ * Used by drivers that implement the GLX_MESA_allocate_memory.
+ */
+#define __DRI_ALLOCATE "DRI_Allocate"
+#define __DRI_ALLOCATE_VERSION 1
+struct __DRIallocateExtensionRec {
+    __DRIextension base;
+
+    void *(*allocateMemory)(__DRIscreen *screen, GLsizei size,
+			    GLfloat readfreq, GLfloat writefreq,
+			    GLfloat priority);
+   
+    void (*freeMemory)(__DRIscreen *screen, GLvoid *pointer);
+   
+    GLuint (*memoryOffset)(__DRIscreen *screen, const GLvoid *pointer);
+};
+
+/**
+ * Used by drivers that implement the GLX_MESA_swap_frame_usage extension.
+ */
+#define __DRI_FRAME_TRACKING "DRI_FrameTracking"
+#define __DRI_FRAME_TRACKING_VERSION 1
+struct __DRIframeTrackingExtensionRec {
+    __DRIextension base;
+
+    /**
+     * Enable or disable frame usage tracking.
+     * 
+     * \since Internal API version 20030317.
+     */
+    int (*frameTracking)(__DRIdrawable *drawable, GLboolean enable);
+
+    /**
+     * Retrieve frame usage information.
+     * 
+     * \since Internal API version 20030317.
+     */
+    int (*queryFrameTracking)(__DRIdrawable *drawable,
+			      int64_t * sbc, int64_t * missedFrames,
+			      float * lastMissedUsage, float * usage);
+};
 
 
 /**
+ * Used by drivers that implement the GLX_SGI_video_sync extension.
+ */
+#define __DRI_MEDIA_STREAM_COUNTER "DRI_MediaStreamCounter"
+#define __DRI_MEDIA_STREAM_COUNTER_VERSION 2
+struct __DRImediaStreamCounterExtensionRec {
+    __DRIextension base;
+
+    /**
+     * Get the number of vertical refreshes since some point in time before
+     * this function was first called (i.e., system start up).
+     */
+    int (*getMSC)(__DRIscreen *screen, int64_t *msc);
+
+    /**
+     * 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.
+     */
+    int (*waitForMSC)(__DRIdrawable *drawable,
+		      int64_t target_msc, int64_t divisor, int64_t remainder,
+		      int64_t * msc, int64_t * sbc);
+
+    /**
+     * Like the screen version of getMSC, but also takes a drawable so that
+     * the appropriate pipe's counter can be retrieved.
+     *
+     * 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 2
+     */
+    int (*getDrawableMSC)(__DRIscreen *screen, void *drawablePrivate,
+			  int64_t *msc);
+};
+
+
+#define __DRI_TEX_OFFSET "DRI_TexOffset"
+#define __DRI_TEX_OFFSET_VERSION 1
+struct __DRItexOffsetExtensionRec {
+    __DRIextension base;
+
+    /**
+     * 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.
+     */
+    void (*setTexOffset)(__DRIcontext *pDRICtx, GLint texname,
+			 unsigned long long offset, GLint depth, GLuint pitch);
+};
+
+
+/**
+ * Macros for building symbol and strings.  Standard CPP two step...
+ */
+
+#define __DRI_REAL_STRINGIFY(x) # x
+#define __DRI_STRINGIFY(x) __DRI_REAL_STRINGIFY(x)
+#define __DRI_REAL_MAKE_VERSION(name, version) name ## _ ## version
+#define __DRI_MAKE_VERSION(name, version) __DRI_REAL_MAKE_VERSION(name, version)
+
+#define __DRI_CREATE_NEW_SCREEN \
+    __DRI_MAKE_VERSION(__driCreateNewScreen, __DRI_INTERFACE_VERSION)
+
+#define __DRI_CREATE_NEW_SCREEN_STRING \
+    __DRI_STRINGIFY(__DRI_CREATE_NEW_SCREEN)
+
+/**
  * \name Functions and data provided by the driver.
  */
 /*@{*/
 
-typedef void *(CREATENEWSCREENFUNC)(__DRInativeDisplay *dpy, int scrn,
-    __DRIscreen *psc, const __GLcontextModes * modes,
+#define __DRI_INTERFACE_VERSION 20070105
+
+typedef void *(CREATENEWSCREENFUNC)(int scr, __DRIscreen *psc,
     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;
+extern CREATENEWSCREENFUNC __DRI_CREATE_NEW_SCREEN;
+
 
 
 /**
@@ -138,11 +283,6 @@ 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,
@@ -156,11 +296,6 @@ struct __DRIinterfaceMethodsRec {
      */
     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.
@@ -170,47 +305,13 @@ struct __DRIinterfaceMethodsRec {
      * 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,
+    GLboolean (* getDrawableInfo) ( __DRIdrawable *drawable,
+	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,
@@ -234,8 +335,8 @@ struct __DRIinterfaceMethodsRec {
      * 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);
+    GLboolean (*getMSCRate)(__DRIdrawable *draw,
+			    int32_t * numerator, int32_t * denominator);
     /*@}*/
 
     /**
@@ -252,11 +353,10 @@ struct __DRIinterfaceMethodsRec {
      * 	      drawable was actually done directly to the front buffer (instead
      *	      of backing storage, for example)
      */
-    void (*reportDamage)(__DRInativeDisplay * dpy, int screen,
-			 __DRIid drawable,
+    void (*reportDamage)(__DRIdrawable *draw,
 			 int x, int y,
 			 drm_clip_rect_t *rects, int num_rects,
-			 int front_buffer);
+			 GLboolean front_buffer);
 };
 
    
@@ -296,21 +396,22 @@ struct __DRIscreenRec {
     /**
      * Method to destroy the private DRI screen data.
      */
-    void (*destroyScreen)(__DRInativeDisplay *dpy, int scrn, void *screenPrivate);
+    void (*destroyScreen)(__DRIscreen *screen);
 
     /**
-     * Method to create the private DRI drawable data and initialize the
-     * drawable dependent methods.
+     * Method to get screen extensions.
      */
-    void *(*createNewDrawable)(__DRInativeDisplay *dpy, const __GLcontextModes *modes,
-			       __DRIid draw, __DRIdrawable *pdraw,
-			       int renderType, const int *attrs);
+    const __DRIextension **(*getExtensions)(__DRIscreen *screen);
 
     /**
-     * Method to return a pointer to the DRI drawable data.
+     * Method to create the private DRI drawable data and initialize the
+     * drawable dependent methods.
      */
-    __DRIdrawable *(*getDrawable)(__DRInativeDisplay *dpy, __DRIid draw,
-				  void *drawablePrivate);
+    void *(*createNewDrawable)(__DRIscreen *screen,
+			       const __GLcontextModes *modes,
+			       __DRIdrawable *pdraw,
+			       drm_drawable_t hwDrawable,
+			       int renderType, const int *attrs);
 
     /**
      * Opaque pointer to private per screen direct rendering data.  \c NULL
@@ -320,59 +421,16 @@ struct __DRIscreenRec {
     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,
+    void * (*createNewContext)(__DRIscreen *screen,
+			       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);
+			       __DRIcontext *shared,
+			       drm_context_t hwContext, __DRIcontext *pctx);
 };
 
 /**
@@ -383,7 +441,7 @@ struct __DRIcontextRec {
     /**
      * Method to destroy the private DRI context data.
      */
-    void (*destroyContext)(__DRInativeDisplay *dpy, int scrn, void *contextPrivate);
+    void (*destroyContext)(__DRIcontext *context);
 
     /**
      * Opaque pointer to private per context direct rendering data.
@@ -393,27 +451,20 @@ struct __DRIcontextRec {
     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);
+    GLboolean (*bindContext)(__DRIcontext *ctx,
+			     __DRIdrawable *pdraw,
+			     __DRIdrawable *pread);
 
     /**
      * 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);
+    GLboolean (*unbindContext)(__DRIcontext *ctx);
 };
 
 /**
@@ -426,12 +477,12 @@ struct __DRIdrawableRec {
     /**
      * Method to destroy the private DRI drawable data.
      */
-    void (*destroyDrawable)(__DRInativeDisplay *dpy, void *drawablePrivate);
+    void (*destroyDrawable)(__DRIdrawable *drawable);
 
     /**
      * Method to swap the front and back buffers.
      */
-    void (*swapBuffers)(__DRInativeDisplay *dpy, void *drawablePrivate);
+    void (*swapBuffers)(__DRIdrawable *drawable);
 
     /**
      * Opaque pointer to private per drawable direct rendering data.
@@ -439,79 +490,6 @@ struct __DRIdrawableRec {
      * 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