diff options
Diffstat (limited to 'gl/internal')
| -rw-r--r-- | gl/internal/dri_interface.h | 638 | ||||
| -rw-r--r-- | gl/internal/glcore.h | 494 |
2 files changed, 1132 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 diff --git a/gl/internal/glcore.h b/gl/internal/glcore.h new file mode 100644 index 000000000..8c720e90b --- /dev/null +++ b/gl/internal/glcore.h @@ -0,0 +1,494 @@ +/* $XFree86: xc/lib/GL/include/GL/internal/glcore.h,v 1.7 2001/03/25 05:32:00 tsi Exp $ */ +#ifndef __gl_core_h_ +#define __gl_core_h_ + +/* + * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) + * Copyright (C) 1991-2000 Silicon Graphics, Inc. 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 + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * 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 including the dates of first publication and + * either this permission notice or a reference to + * http://oss.sgi.com/projects/FreeB/ + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * SILICON GRAPHICS, INC. 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. + * + * Except as contained in this notice, the name of Silicon Graphics, Inc. + * shall not be used in advertising or otherwise to promote the sale, use or + * other dealings in this Software without prior written authorization from + * Silicon Graphics, Inc. + */ + +#ifndef XFree86LOADER +#include <sys/types.h> +#endif + +#ifdef CAPI +#undef CAPI +#endif +#define CAPI + +#define GL_CORE_SGI 1 +#define GL_CORE_MESA 2 +#define GL_CORE_APPLE 4 +#define GL_CORE_WINDOWS 8 + +typedef struct __GLcontextRec __GLcontext; +typedef struct __GLinterfaceRec __GLinterface; + +/* +** This file defines the interface between the GL core and the surrounding +** "operating system" that supports it (currently the GLX or WGL extensions). +** +** Members (data and function pointers) are documented as imported or +** exported according to how they are used by the core rendering functions. +** Imported members are initialized by the "operating system" and used by +** the core functions. Exported members are initialized by the core functions +** and used by the "operating system". +*/ + +/* +** Mode and limit information for a context. This information is +** kept around in the context so that values can be used during +** command execution, and for returning information about the +** context to the application. +*/ +typedef struct __GLcontextModesRec { + struct __GLcontextModesRec * next; + + GLboolean rgbMode; + GLboolean floatMode; + GLboolean colorIndexMode; + GLuint doubleBufferMode; + GLuint stereoMode; + + GLboolean haveAccumBuffer; + GLboolean haveDepthBuffer; + GLboolean haveStencilBuffer; + + GLint redBits, greenBits, blueBits, alphaBits; /* bits per comp */ + GLuint redMask, greenMask, blueMask, alphaMask; + GLint rgbBits; /* total bits for rgb */ + GLint indexBits; /* total bits for colorindex */ + + GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits; + GLint depthBits; + GLint stencilBits; + + GLint numAuxBuffers; + + GLint level; + + GLint pixmapMode; + + /* GLX */ + GLint visualID; + GLint visualType; /**< One of the GLX X visual types. (i.e., + * \c GLX_TRUE_COLOR, etc.) + */ + + /* EXT_visual_rating / GLX 1.2 */ + GLint visualRating; + + /* EXT_visual_info / GLX 1.2 */ + GLint transparentPixel; + /* colors are floats scaled to ints */ + GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha; + GLint transparentIndex; + + /* ARB_multisample / SGIS_multisample */ + GLint sampleBuffers; + GLint samples; + + /* SGIX_fbconfig / GLX 1.3 */ + GLint drawableType; + GLint renderType; + GLint xRenderable; + GLint fbconfigID; + + /* SGIX_pbuffer / GLX 1.3 */ + GLint maxPbufferWidth; + GLint maxPbufferHeight; + GLint maxPbufferPixels; + GLint optimalPbufferWidth; /* Only for SGIX_pbuffer. */ + GLint optimalPbufferHeight; /* Only for SGIX_pbuffer. */ + + /* SGIX_visual_select_group */ + GLint visualSelectGroup; + + /* OML_swap_method */ + GLint swapMethod; + + GLint screen; +} __GLcontextModes; + +/* Several fields of __GLcontextModes can take these as values. Since + * GLX header files may not be available everywhere they need to be used, + * redefine them here. + */ +#define GLX_NONE 0x8000 +#define GLX_SLOW_CONFIG 0x8001 +#define GLX_TRUE_COLOR 0x8002 +#define GLX_DIRECT_COLOR 0x8003 +#define GLX_PSEUDO_COLOR 0x8004 +#define GLX_STATIC_COLOR 0x8005 +#define GLX_GRAY_SCALE 0x8006 +#define GLX_STATIC_GRAY 0x8007 +#define GLX_TRANSPARENT_RGB 0x8008 +#define GLX_TRANSPARENT_INDEX 0x8009 +#define GLX_NON_CONFORMANT_CONFIG 0x800D +#define GLX_SWAP_EXCHANGE_OML 0x8061 +#define GLX_SWAP_COPY_OML 0x8062 +#define GLX_SWAP_UNDEFINED_OML 0x8063 + +#define GLX_DONT_CARE 0xFFFFFFFF + +#define GLX_RGBA_BIT 0x00000001 +#define GLX_COLOR_INDEX_BIT 0x00000002 +#define GLX_WINDOW_BIT 0x00000001 +#define GLX_PIXMAP_BIT 0x00000002 +#define GLX_PBUFFER_BIT 0x00000004 + +/************************************************************************/ + +/* +** Structure used for allocating and freeing drawable private memory. +** (like software buffers, for example). +** +** The memory allocation routines are provided by the surrounding +** "operating system" code, and they are to be used for allocating +** software buffers and things which are associated with the drawable, +** and used by any context which draws to that drawable. There are +** separate memory allocation functions for drawables and contexts +** since drawables and contexts can be created and destroyed independently +** of one another, and the "operating system" may want to use separate +** allocation arenas for each. +** +** The freePrivate function is filled in by the core routines when they +** allocates software buffers, and stick them in "private". The freePrivate +** function will destroy anything allocated to this drawable (to be called +** when the drawable is destroyed). +*/ +typedef struct __GLdrawableRegionRec __GLdrawableRegion; +typedef struct __GLdrawableBufferRec __GLdrawableBuffer; +typedef struct __GLdrawablePrivateRec __GLdrawablePrivate; + +typedef struct __GLregionRectRec { + /* lower left (inside the rectangle) */ + GLint x0, y0; + /* upper right (outside the rectangle) */ + GLint x1, y1; +} __GLregionRect; + +struct __GLdrawableRegionRec { + GLint numRects; + __GLregionRect *rects; + __GLregionRect boundingRect; +}; + +/************************************************************************/ + +/* masks for the buffers */ +#define __GL_FRONT_BUFFER_MASK 0x00000001 +#define __GL_FRONT_LEFT_BUFFER_MASK 0x00000001 +#define __GL_FRONT_RIGHT_BUFFER_MASK 0x00000002 +#define __GL_BACK_BUFFER_MASK 0x00000004 +#define __GL_BACK_LEFT_BUFFER_MASK 0x00000004 +#define __GL_BACK_RIGHT_BUFFER_MASK 0x00000008 +#define __GL_ACCUM_BUFFER_MASK 0x00000010 +#define __GL_DEPTH_BUFFER_MASK 0x00000020 +#define __GL_STENCIL_BUFFER_MASK 0x00000040 +#define __GL_AUX_BUFFER_MASK(i) (0x0000080 << (i)) + +#define __GL_ALL_BUFFER_MASK 0xffffffff + +/* what Resize routines return if resize resorted to fallback case */ +#define __GL_BUFFER_FALLBACK 0x10 + +typedef void (*__GLbufFallbackInitFn)(__GLdrawableBuffer *buf, + __GLdrawablePrivate *glPriv, GLint bits); +typedef void (*__GLbufMainInitFn)(__GLdrawableBuffer *buf, + __GLdrawablePrivate *glPriv, GLint bits, + __GLbufFallbackInitFn back); + +/* +** A drawable buffer +** +** This data structure describes the context side of a drawable. +** +** According to the spec there could be multiple contexts bound to the same +** drawable at the same time (from different threads). In order to avoid +** multiple-access conflicts, locks are used to serialize access. When a +** thread needs to access (read or write) a member of the drawable, it takes +** a lock first. Some of the entries in the drawable are treated "mostly +** constant", so we take the freedom of allowing access to them without +** taking a lock (for optimization reasons). +** +** For more details regarding locking, see buffers.h in the GL core +*/ +struct __GLdrawableBufferRec { + /* + ** Buffer dimensions + */ + GLint width, height, depth; + + /* + ** Framebuffer base address + */ + void *base; + + /* + ** Framebuffer size (in bytes) + */ + GLuint size; + + /* + ** Size (in bytes) of each element in the framebuffer + */ + GLuint elementSize; + GLuint elementSizeLog2; + + /* + ** Element skip from one scanline to the next. + ** If the buffer is part of another buffer (for example, fullscreen + ** front buffer), outerWidth is the width of that buffer. + */ + GLint outerWidth; + + /* + ** outerWidth * elementSize + */ + GLint byteWidth; + + /* + ** Allocation/deallocation is done based on this handle. A handle + ** is conceptually different from the framebuffer 'base'. + */ + void *handle; + + /* imported */ + GLboolean (*resize)(__GLdrawableBuffer *buf, + GLint x, GLint y, GLuint width, GLuint height, + __GLdrawablePrivate *glPriv, GLuint bufferMask); + void (*lock)(__GLdrawableBuffer *buf, __GLdrawablePrivate *glPriv); + void (*unlock)(__GLdrawableBuffer *buf, __GLdrawablePrivate *glPriv); + void (*fill)(__GLdrawableBuffer *buf, __GLdrawablePrivate *glPriv, + GLuint val, GLint x, GLint y, GLint w, GLint h); + void (*free)(__GLdrawableBuffer *buf, __GLdrawablePrivate *glPriv); + + /* exported */ + void (*freePrivate)(__GLdrawableBuffer *buf, __GLdrawablePrivate *glPriv); +#ifdef __cplusplus + void *privatePtr; +#else + void *private; +#endif + + /* private */ + void *other; /* implementation private data */ + __GLbufMainInitFn mainInit; + __GLbufFallbackInitFn fallbackInit; +}; + +/* +** The context side of the drawable private +*/ +struct __GLdrawablePrivateRec { + /* + ** Drawable Modes + */ + __GLcontextModes *modes; + + /* + ** Drawable size + */ + GLuint width, height; + + /* + ** Origin in screen coordinates of the drawable + */ + GLint xOrigin, yOrigin; +#ifdef __GL_ALIGNED_BUFFERS + /* + ** Drawable offset from screen origin + */ + GLint xOffset, yOffset; + + /* + ** Alignment restriction + */ + GLint xAlignment, yAlignment; +#endif + /* + ** Should we invert the y axis? + */ + GLint yInverted; + + /* + ** Mask specifying which buffers are renderable by the hw + */ + GLuint accelBufferMask; + + /* + ** the buffers themselves + */ + __GLdrawableBuffer frontBuffer; + __GLdrawableBuffer backBuffer; + __GLdrawableBuffer accumBuffer; + __GLdrawableBuffer depthBuffer; + __GLdrawableBuffer stencilBuffer; +#if defined(__GL_NUMBER_OF_AUX_BUFFERS) && (__GL_NUMBER_OF_AUX_BUFFERS > 0) + __GLdrawableBuffer *auxBuffer; +#endif + + __GLdrawableRegion ownershipRegion; + + /* + ** Lock for the drawable private structure + */ + void *lock; +#ifdef DEBUG + /* lock debugging info */ + int lockRefCount; + int lockLine[10]; + char *lockFile[10]; +#endif + + /* imported */ + void *(*malloc)(size_t size); + void *(*calloc)(size_t numElem, size_t elemSize); + void *(*realloc)(void *oldAddr, size_t newSize); + void (*free)(void *addr); + + GLboolean (*addSwapRect)(__GLdrawablePrivate *glPriv, + GLint x, GLint y, GLsizei width, GLsizei height); + void (*setClipRect)(__GLdrawablePrivate *glPriv, + GLint x, GLint y, GLsizei width, GLsizei height); + void (*updateClipRegion)(__GLdrawablePrivate *glPriv); + GLboolean (*resize)(__GLdrawablePrivate *glPriv); + void (*getDrawableSize)(__GLdrawablePrivate *glPriv, + GLint *x, GLint *y, GLuint *width, GLuint *height); + + void (*lockDP)(__GLdrawablePrivate *glPriv, __GLcontext *gc); + void (*unlockDP)(__GLdrawablePrivate *glPriv); + + /* exported */ +#ifdef __cplusplus + void *privatePtr; +#else + void *private; +#endif + void (*freePrivate)(__GLdrawablePrivate *); + + /* client data */ + void *other; +}; + +/* +** Macros to lock/unlock the drawable private +*/ +#if defined(DEBUG) +#define __GL_LOCK_DP(glPriv,gc) \ + (*(glPriv)->lockDP)(glPriv,gc); \ + (glPriv)->lockLine[(glPriv)->lockRefCount] = __LINE__; \ + (glPriv)->lockFile[(glPriv)->lockRefCount] = __FILE__; \ + (glPriv)->lockRefCount++ +#define __GL_UNLOCK_DP(glPriv) \ + (glPriv)->lockRefCount--; \ + (glPriv)->lockLine[(glPriv)->lockRefCount] = 0; \ + (glPriv)->lockFile[(glPriv)->lockRefCount] = NULL; \ + (*(glPriv)->unlockDP)(glPriv) +#else /* DEBUG */ +#define __GL_LOCK_DP(glPriv,gc) (*(glPriv)->lockDP)(glPriv,gc) +#define __GL_UNLOCK_DP(glPriv) (*(glPriv)->unlockDP)(glPriv) +#endif /* DEBUG */ + + +/* +** Procedures which are imported by the GL from the surrounding +** "operating system". Math functions are not considered part of the +** "operating system". +*/ +typedef struct __GLimportsRec { + /* Memory management */ + void * (*malloc)(__GLcontext *gc, size_t size); + void *(*calloc)(__GLcontext *gc, size_t numElem, size_t elemSize); + void *(*realloc)(__GLcontext *gc, void *oldAddr, size_t newSize); + void (*free)(__GLcontext *gc, void *addr); + + /* Error handling */ + void (*warning)(__GLcontext *gc, char *fmt); + void (*fatal)(__GLcontext *gc, char *fmt); + + /* other system calls */ + char *(CAPI *getenv)(__GLcontext *gc, const char *var); + int (CAPI *atoi)(__GLcontext *gc, const char *str); + int (CAPI *sprintf)(__GLcontext *gc, char *str, const char *fmt, ...); + void *(CAPI *fopen)(__GLcontext *gc, const char *path, const char *mode); + int (CAPI *fclose)(__GLcontext *gc, void *stream); + int (CAPI *fprintf)(__GLcontext *gc, void *stream, const char *fmt, ...); + + /* Drawing surface management */ + __GLdrawablePrivate *(*getDrawablePrivate)(__GLcontext *gc); + __GLdrawablePrivate *(*getReadablePrivate)(__GLcontext *gc); + + /* Operating system dependent data goes here */ + void *other; +} __GLimports; + +/************************************************************************/ + +/* +** Procedures which are exported by the GL to the surrounding "operating +** system" so that it can manage multiple GL context's. +*/ +typedef struct __GLexportsRec { + /* Context management (return GL_FALSE on failure) */ + GLboolean (*destroyContext)(__GLcontext *gc); + GLboolean (*loseCurrent)(__GLcontext *gc); + /* oldglPriv isn't used anymore, kept for backwards compatibility */ + GLboolean (*makeCurrent)(__GLcontext *gc); + GLboolean (*shareContext)(__GLcontext *gc, __GLcontext *gcShare); + GLboolean (*copyContext)(__GLcontext *dst, const __GLcontext *src, GLuint mask); + GLboolean (*forceCurrent)(__GLcontext *gc); + + /* Drawing surface notification callbacks */ + GLboolean (*notifyResize)(__GLcontext *gc); + void (*notifyDestroy)(__GLcontext *gc); + void (*notifySwapBuffers)(__GLcontext *gc); + + /* Dispatch table override control for external agents like libGLS */ + struct __GLdispatchStateRec* (*dispatchExec)(__GLcontext *gc); + void (*beginDispatchOverride)(__GLcontext *gc); + void (*endDispatchOverride)(__GLcontext *gc); +} __GLexports; + +/************************************************************************/ + +/* +** This must be the first member of a __GLcontext structure. This is the +** only part of a context that is exposed to the outside world; everything +** else is opaque. +*/ +struct __GLinterfaceRec { + __GLimports imports; + __GLexports exports; +}; + +extern __GLcontext *__glCoreCreateContext(__GLimports *, __GLcontextModes *); +extern void __glCoreNopDispatch(void); + +#endif /* __gl_core_h_ */ |