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Diffstat (limited to 'gl/internal/dri_interface.h')
| -rw-r--r-- | gl/internal/dri_interface.h | 638 |
1 files changed, 638 insertions, 0 deletions
diff --git a/gl/internal/dri_interface.h b/gl/internal/dri_interface.h new file mode 100644 index 000000000..97f4166ff --- /dev/null +++ b/gl/internal/dri_interface.h @@ -0,0 +1,638 @@ +/* + * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2007-2008 Red Hat, Inc. + * (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> + * \author Kristian Høgsberg <krh@redhat.com> + */ + +#ifndef DRI_INTERFACE_H +#define DRI_INTERFACE_H + +/* Make this something other than __APPLE__ for other arcs with no drm.h */ +#if !defined(__APPLE__) && !defined(__CYGWIN__) && !defined(_MSC_VER) +#include <drm.h> +#else +typedef unsigned int drm_context_t; +typedef unsigned int drm_drawable_t; +typedef struct drm_clip_rect drm_clip_rect_t; +#endif + +/** + * \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 __DRIconfigRec __DRIconfig; +typedef struct __DRIframebufferRec __DRIframebuffer; +typedef struct __DRIversionRec __DRIversion; + +typedef struct __DRIcoreExtensionRec __DRIcoreExtension; +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; +typedef struct __DRItexBufferExtensionRec __DRItexBufferExtension; +typedef struct __DRIlegacyExtensionRec __DRIlegacyExtension; +typedef struct __DRIswrastExtensionRec __DRIswrastExtension; +/*@}*/ + + +/** + * Extension struct. Drivers 'inherit' from this struct by embedding + * it as the first element in the extension struct. + * + * 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; +}; + +/** + * The first set of extension are the screen extensions, returned by + * __DRIcore::getExtensions(). This entry point will return a list of + * extensions and the loader can use the ones it knows about by + * casting them to more specific extensions and advertising any GLX + * extensions the DRI extensions enables. + */ + +/** + * Used by drivers to indicate support for setting the read drawable. + */ +#define __DRI_READ_DRAWABLE "DRI_ReadDrawable" +#define __DRI_READ_DRAWABLE_VERSION 1 + +/** + * Used by drivers that implement the GLX_MESA_copy_sub_buffer extension. + */ +#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); +}; + +/** + * Used by drivers that implement the GLX_SGI_swap_control or + * GLX_MESA_swap_control extension. + */ +#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 1 +struct __DRImediaStreamCounterExtensionRec { + __DRIextension base; + + /** + * 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); + + /** + * Get the number of vertical refreshes since some point in time before + * this function was first called (i.e., system start up). + */ + int (*getDrawableMSC)(__DRIscreen *screen, __DRIdrawable *drawable, + 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); +}; + + +#define __DRI_TEX_BUFFER "DRI_TexBuffer" +#define __DRI_TEX_BUFFER_VERSION 1 +struct __DRItexBufferExtensionRec { + __DRIextension base; + + /** + * Method to override base texture image with the contents of a + * __DRIdrawable. + * + * For GLX_EXT_texture_from_pixmap with AIGLX. + */ + void (*setTexBuffer)(__DRIcontext *pDRICtx, + GLint target, + __DRIdrawable *pDraw); +}; + + +/** + * XML document describing the configuration options supported by the + * driver. + */ +extern const char __driConfigOptions[]; + +/*@}*/ + +/** + * The following extensions describe loader features that the DRI + * driver can make use of. Some of these are mandatory, such as the + * getDrawableInfo extension for DRI and the DRI Loader extensions for + * DRI2, while others are optional, and if present allow the driver to + * expose certain features. The loader pass in a NULL terminated + * array of these extensions to the driver in the createNewScreen + * constructor. + */ + +typedef struct __DRIgetDrawableInfoExtensionRec __DRIgetDrawableInfoExtension; +typedef struct __DRIsystemTimeExtensionRec __DRIsystemTimeExtension; +typedef struct __DRIdamageExtensionRec __DRIdamageExtension; +typedef struct __DRIloaderExtensionRec __DRIloaderExtension; +typedef struct __DRIswrastLoaderExtensionRec __DRIswrastLoaderExtension; + + +/** + * Callback to getDrawableInfo protocol + */ +#define __DRI_GET_DRAWABLE_INFO "DRI_GetDrawableInfo" +#define __DRI_GET_DRAWABLE_INFO_VERSION 1 +struct __DRIgetDrawableInfoExtensionRec { + __DRIextension base; + + /** + * This function is used to get information about the position, size, and + * clip rects of a drawable. + */ + 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, + int * numBackClipRects, drm_clip_rect_t ** pBackClipRects, + void *loaderPrivate); +}; + +typedef int int32_t; + +/** + * Callback to get system time for media stream counter extensions. + */ +#define __DRI_SYSTEM_TIME "DRI_SystemTime" +#define __DRI_SYSTEM_TIME_VERSION 1 +struct __DRIsystemTimeExtensionRec { + __DRIextension base; + + /** + * 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)(__DRIdrawable *draw, + int32_t * numerator, int32_t * denominator, + void *loaderPrivate); +}; + +/** + * Damage reporting + */ +#define __DRI_DAMAGE "DRI_Damage" +#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 |