dri_interface.h

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

#define __DRI_DAMAGE_VERSION 1
struct __DRIdamageExtensionRec {
    __DRIextension base;

    /**
     * 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)
     * \param loaderPrivate the data passed in at createNewDrawable time
     */
    void (*reportDamage)(__DRIdrawable *draw,
			 int x, int y,
			 drm_clip_rect_t *rects, int num_rects,
			 GLboolean front_buffer,
			 void *loaderPrivate);
};

/**
 * DRI2 Loader extension.  This extension describes the basic
 * functionality the loader needs to provide for the DRI driver.
 */
#define __DRI_LOADER "DRI_Loader"
#define __DRI_LOADER_VERSION 1
struct __DRIloaderExtensionRec {
    __DRIextension base;

    /**
     * Ping the windowing system to get it to reemit info for the
     * specified drawable in the DRI2 event buffer.
     *
     * \param draw the drawable for which to request info
     * \param tail the new event buffer tail pointer
     */
    void (*reemitDrawableInfo)(__DRIdrawable *draw, unsigned int *tail,
			       void *loaderPrivate);

    void (*postDamage)(__DRIdrawable *draw, struct drm_clip_rect *rects,
		       int num_rects, void *loaderPrivate);
};

#define __DRI_SWRAST_IMAGE_OP_DRAW	1
#define __DRI_SWRAST_IMAGE_OP_CLEAR	2
#define __DRI_SWRAST_IMAGE_OP_SWAP	3

/**
 * SWRast Loader extension.
 */
#define __DRI_SWRAST_LOADER "DRI_SWRastLoader"
#define __DRI_SWRAST_LOADER_VERSION 1
struct __DRIswrastLoaderExtensionRec {
    __DRIextension base;

    /*
     * Drawable position and size
     */
    void (*getDrawableInfo)(__DRIdrawable *drawable,
			    int *x, int *y, int *width, int *height,
			    void *loaderPrivate);

    /**
     * Put image to drawable
     */
    void (*putImage)(__DRIdrawable *drawable, int op,
		     int x, int y, int width, int height, char *data,
		     void *loaderPrivate);

    /**
     * Get image from drawable
     */
    void (*getImage)(__DRIdrawable *drawable,
		     int x, int y, int width, int height, char *data,
		     void *loaderPrivate);
};

/**
 * The remaining extensions describe driver extensions, immediately
 * available interfaces provided by the driver.  To start using the
 * driver, dlsym() for the __DRI_DRIVER_EXTENSIONS symbol and look for
 * the extension you need in the array.
 */
#define __DRI_DRIVER_EXTENSIONS "__driDriverExtensions"

/**
 * Tokens for __DRIconfig attribs.  A number of attributes defined by
 * GLX or EGL standards are not in the table, as they must be provided
 * by the loader.  For example, FBConfig ID or visual ID, drawable type.
 */

#define __DRI_ATTRIB_BUFFER_SIZE		 1
#define __DRI_ATTRIB_LEVEL			 2
#define __DRI_ATTRIB_RED_SIZE			 3
#define __DRI_ATTRIB_GREEN_SIZE			 4
#define __DRI_ATTRIB_BLUE_SIZE			 5
#define __DRI_ATTRIB_LUMINANCE_SIZE		 6
#define __DRI_ATTRIB_ALPHA_SIZE			 7
#define __DRI_ATTRIB_ALPHA_MASK_SIZE		 8
#define __DRI_ATTRIB_DEPTH_SIZE			 9
#define __DRI_ATTRIB_STENCIL_SIZE		10
#define __DRI_ATTRIB_ACCUM_RED_SIZE		11
#define __DRI_ATTRIB_ACCUM_GREEN_SIZE		12
#define __DRI_ATTRIB_ACCUM_BLUE_SIZE		13
#define __DRI_ATTRIB_ACCUM_ALPHA_SIZE		14
#define __DRI_ATTRIB_SAMPLE_BUFFERS		15
#define __DRI_ATTRIB_SAMPLES			16
#define __DRI_ATTRIB_RENDER_TYPE		17
#define __DRI_ATTRIB_CONFIG_CAVEAT		18
#define __DRI_ATTRIB_CONFORMANT			19
#define __DRI_ATTRIB_DOUBLE_BUFFER		20
#define __DRI_ATTRIB_STEREO			21
#define __DRI_ATTRIB_AUX_BUFFERS		22
#define __DRI_ATTRIB_TRANSPARENT_TYPE		23
#define __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE	24
#define __DRI_ATTRIB_TRANSPARENT_RED_VALUE	25
#define __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE	26
#define __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE	27
#define __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE	28
#define __DRI_ATTRIB_FLOAT_MODE			29
#define __DRI_ATTRIB_RED_MASK			30
#define __DRI_ATTRIB_GREEN_MASK			31
#define __DRI_ATTRIB_BLUE_MASK			32
#define __DRI_ATTRIB_ALPHA_MASK			33
#define __DRI_ATTRIB_MAX_PBUFFER_WIDTH		34
#define __DRI_ATTRIB_MAX_PBUFFER_HEIGHT		35
#define __DRI_ATTRIB_MAX_PBUFFER_PIXELS		36
#define __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH	37
#define __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT	38
#define __DRI_ATTRIB_VISUAL_SELECT_GROUP	39
#define __DRI_ATTRIB_SWAP_METHOD		40
#define __DRI_ATTRIB_MAX_SWAP_INTERVAL		41
#define __DRI_ATTRIB_MIN_SWAP_INTERVAL		42
#define __DRI_ATTRIB_BIND_TO_TEXTURE_RGB	43
#define __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA	44
#define __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE	45
#define __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS	46
#define __DRI_ATTRIB_YINVERTED			47

/* __DRI_ATTRIB_RENDER_TYPE */
#define __DRI_ATTRIB_RGBA_BIT			0x01	
#define __DRI_ATTRIB_COLOR_INDEX_BIT		0x02
#define __DRI_ATTRIB_LUMINANCE_BIT		0x04

/* __DRI_ATTRIB_CONFIG_CAVEAT */
#define __DRI_ATTRIB_SLOW_BIT			0x01
#define __DRI_ATTRIB_NON_CONFORMANT_CONFIG	0x02

/* __DRI_ATTRIB_TRANSPARENT_TYPE */
#define __DRI_ATTRIB_TRANSPARENT_RGB		0x00
#define __DRI_ATTRIB_TRANSPARENT_INDEX		0x01

/* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS	 */
#define __DRI_ATTRIB_TEXTURE_1D_BIT		0x01
#define __DRI_ATTRIB_TEXTURE_2D_BIT		0x02
#define __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT	0x04

/**
 * This extension defines the core DRI functionality.
 */
#define __DRI_CORE "DRI_Core"
#define __DRI_CORE_VERSION 1

struct __DRIcoreExtensionRec {
    __DRIextension base;

    __DRIscreen *(*createNewScreen)(int screen, int fd,
				    unsigned int sarea_handle,
				    const __DRIextension **extensions,
				    const __DRIconfig ***driverConfigs,
				    void *loaderPrivate);

    void (*destroyScreen)(__DRIscreen *screen);

    const __DRIextension **(*getExtensions)(__DRIscreen *screen);

    int (*getConfigAttrib)(const __DRIconfig *config,
			   unsigned int attrib,
			   unsigned int *value);

    int (*indexConfigAttrib)(const __DRIconfig *config, int index,
			     unsigned int *attrib, unsigned int *value);

    __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
					const __DRIconfig *config,
					unsigned int drawable_id,
					unsigned int head,
					void *loaderPrivate);

    void (*destroyDrawable)(__DRIdrawable *drawable);

    void (*swapBuffers)(__DRIdrawable *drawable);

    __DRIcontext *(*createNewContext)(__DRIscreen *screen,
				      const __DRIconfig *config,
				      __DRIcontext *shared,
				      void *loaderPrivate);

    int (*copyContext)(__DRIcontext *dest,
		       __DRIcontext *src,
		       unsigned long mask);

    void (*destroyContext)(__DRIcontext *context);

    int (*bindContext)(__DRIcontext *ctx,
		       __DRIdrawable *pdraw,
		       __DRIdrawable *pread);

    int (*unbindContext)(__DRIcontext *ctx);
};

/**
 * 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. */
};

/**
 * 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. */
};


/**
 * This extension provides alternative screen, drawable and context
 * constructors for legacy DRI functionality.  This is used in
 * conjunction with the core extension.
 */
#define __DRI_LEGACY "DRI_Legacy"
#define __DRI_LEGACY_VERSION 1

struct __DRIlegacyExtensionRec {
    __DRIextension base;

    __DRIscreen *(*createNewScreen)(int screen,
				    const __DRIversion *ddx_version,
				    const __DRIversion *dri_version,
				    const __DRIversion *drm_version,
				    const __DRIframebuffer *frame_buffer,
				    void *pSAREA, int fd, 
				    const __DRIextension **extensions,
				    const __DRIconfig ***driver_configs,
				    void *loaderPrivate);

    __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
					const __DRIconfig *config,
					drm_drawable_t hwDrawable,
					int renderType, const int *attrs,
					void *loaderPrivate);

    __DRIcontext *(*createNewContext)(__DRIscreen *screen,
				      const __DRIconfig *config,
				      int render_type,
				      __DRIcontext *shared,
				      drm_context_t hwContext,
				      void *loaderPrivate);
};

/**
 * This extension provides alternative screen, drawable and context
 * constructors for swrast DRI functionality.  This is used in
 * conjunction with the core extension.
 */
#define __DRI_SWRAST "DRI_SWRast"
#define __DRI_SWRAST_VERSION 1

struct __DRIswrastExtensionRec {
    __DRIextension base;

    __DRIscreen *(*createNewScreen)(int screen,
				    const __DRIextension **extensions,
				    const __DRIconfig ***driver_configs,
				    void *loaderPrivate);

    __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
					const __DRIconfig *config,
					void *loaderPrivate);
};

#endif