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0095be534d633848bc12d73ed9dcc1b9aa41f00a
third_party_mesa3d/src/mesa/drivers/x11/xmesaP.h
Brian 0095be534d Change/fix surface allocation functions. 
Use xmesa_new_color_surface() for front/back renderbuffer surfaces.
Use xmesa_surface_alloc() for everything else (textures, other renderbuffers)
2007-08-11 21:21:12 +01:00

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/*
* Mesa 3-D graphics library
* Version: 7.1
*
* Copyright (C) 1999-2007 Brian Paul 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 and this permission notice 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
* BRIAN PAUL 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.
*/
#ifndef XMESAP_H
#define XMESAP_H
#include "GL/xmesa.h"
#include "mtypes.h"
#if defined(FX)
#include "GL/fxmesa.h"
#include "xm_glide.h"
#endif
#ifdef XFree86Server
#include "xm_image.h"
#endif
#include "state_tracker/st_cb_fbo.h"
#include "pipe/softpipe/sp_context.h"
#include "pipe/softpipe/sp_surface.h"
extern _glthread_Mutex _xmesa_lock;
extern XMesaBuffer XMesaBufferList;
/* for PF_8R8G8B24 pixel format */
typedef struct {
GLubyte b;
GLubyte g;
GLubyte r;
} bgr_t;
struct xmesa_renderbuffer;
/* Function pointer for clearing color buffers */
typedef void (*ClearFunc)( GLcontext *ctx, struct xmesa_renderbuffer *xrb,
GLint x, GLint y, GLint width, GLint height );
/** Framebuffer pixel formats */
enum pixel_format {
PF_Index, /**< Color Index mode */
PF_Truecolor, /**< TrueColor or DirectColor, any depth */
PF_Dither_True, /**< TrueColor with dithering */
PF_8A8R8G8B, /**< 32-bit TrueColor: 8-A, 8-R, 8-G, 8-B bits */
PF_8A8B8G8R, /**< 32-bit TrueColor: 8-A, 8-B, 8-G, 8-R bits */
PF_8R8G8B, /**< 32-bit TrueColor: 8-R, 8-G, 8-B bits */
PF_8R8G8B24, /**< 24-bit TrueColor: 8-R, 8-G, 8-B bits */
PF_5R6G5B, /**< 16-bit TrueColor: 5-R, 6-G, 5-B bits */
PF_Dither, /**< Color-mapped RGB with dither */
PF_Lookup, /**< Color-mapped RGB without dither */
PF_HPCR, /**< HP Color Recovery (ad@lms.be 30/08/95) */
PF_1Bit, /**< monochrome dithering of RGB */
PF_Grayscale, /**< Grayscale or StaticGray */
PF_Dither_5R6G5B /**< 16-bit dithered TrueColor: 5-R, 6-G, 5-B */
};
/**
* Visual inforation, derived from GLvisual.
* Basically corresponds to an XVisualInfo.
*/
struct xmesa_visual {
GLvisual mesa_visual; /* Device independent visual parameters */
XMesaDisplay *display; /* The X11 display */
#ifdef XFree86Server
GLint ColormapEntries;
GLint nplanes;
#else
XMesaVisualInfo visinfo; /* X's visual info (pointer to private copy) */
XVisualInfo *vishandle; /* Only used in fakeglx.c */
#endif
GLint BitsPerPixel; /* True bits per pixel for XImages */
GLboolean ximage_flag; /* Use XImage for back buffer (not pixmap)? */
enum pixel_format dithered_pf; /* Pixel format when dithering */
enum pixel_format undithered_pf;/* Pixel format when not dithering */
GLfloat RedGamma; /* Gamma values, 1.0 is default */
GLfloat GreenGamma;
GLfloat BlueGamma;
/* For PF_TRUECOLOR */
GLint rshift, gshift, bshift;/* Pixel color component shifts */
GLubyte Kernel[16]; /* Dither kernel */
unsigned long RtoPixel[512]; /* RGB to pixel conversion */
unsigned long GtoPixel[512];
unsigned long BtoPixel[512];
GLubyte PixelToR[256]; /* Pixel to RGB conversion */
GLubyte PixelToG[256];
GLubyte PixelToB[256];
/* For PF_HPCR */
short hpcr_rgbTbl[3][256];
GLboolean hpcr_clear_flag;
GLubyte hpcr_clear_ximage_pattern[2][16];
XMesaImage *hpcr_clear_ximage;
XMesaPixmap hpcr_clear_pixmap;
/* For PF_1BIT */
int bitFlip;
};
/**
* Context info, dDerived from GLcontext.
* Basically corresponds to a GLXContext.
*/
struct xmesa_context {
GLcontext mesa; /* the core library context (containment) */
XMesaVisual xm_visual; /* Describes the buffers */
XMesaBuffer xm_buffer; /* current span/point/line/triangle buffer */
XMesaDisplay *display; /* == xm_visual->display */
GLboolean swapbytes; /* Host byte order != display byte order? */
GLboolean direct; /* Direct rendering context? */
enum pixel_format pixelformat;
GLubyte clearcolor[4]; /* current clearing color */
unsigned long clearpixel; /* current clearing pixel value */
};
/**
* Types of X/GLX drawables we might render into.
*/
typedef enum {
WINDOW, /* An X window */
GLXWINDOW, /* GLX window */
PIXMAP, /* GLX pixmap */
PBUFFER /* GLX Pbuffer */
} BufferType;
/** Values for db_mode: */
/*@{*/
#define BACK_PIXMAP 1
#define BACK_XIMAGE 2
/*@}*/
/**
* An xmesa_renderbuffer represents the back or front color buffer.
* For the front color buffer:
* <drawable> is the X window
* For the back color buffer:
* Either <ximage> or <pixmap> will be used, never both.
* In any case, <drawable> always equals <pixmap>.
* For stand-alone Mesa, we could merge <drawable> and <pixmap> into one
* field. We don't do that for the server-side GLcore module because
* pixmaps and drawables are different and we'd need a bunch of casts.
*/
struct xmesa_renderbuffer
{
#if 0
struct gl_renderbuffer Base; /* Base class */
#else
struct st_renderbuffer St; /**< Base class */
#endif
XMesaBuffer Parent; /**< The XMesaBuffer this renderbuffer belongs to */
XMesaDrawable drawable; /* Usually the X window ID */
XMesaPixmap pixmap; /* Back color buffer */
XMesaImage *ximage; /* The back buffer, if not using a Pixmap */
GLubyte *origin1; /* used for PIXEL_ADDR1 macro */
GLint width1;
GLushort *origin2; /* used for PIXEL_ADDR2 macro */
GLint width2;
GLubyte *origin3; /* used for PIXEL_ADDR3 macro */
GLint width3;
GLuint *origin4; /* used for PIXEL_ADDR4 macro */
GLint width4;
GLint bottom; /* used for FLIP macro, equals height - 1 */
ClearFunc clearFunc;
void *pSurface; /** pipe surface */
};
/**
* Framebuffer information, derived from.
* Basically corresponds to a GLXDrawable.
*/
struct xmesa_buffer {
GLframebuffer mesa_buffer; /* depth, stencil, accum, etc buffers */
/* This MUST BE FIRST! */
GLboolean wasCurrent; /* was ever the current buffer? */
XMesaVisual xm_visual; /* the X/Mesa visual */
XMesaDisplay *display;
BufferType type; /* window, pixmap, pbuffer or glxwindow */
struct xmesa_renderbuffer *frontxrb; /* front color renderbuffer */
struct xmesa_renderbuffer *backxrb; /* back color renderbuffer */
XMesaColormap cmap; /* the X colormap */
unsigned long selectedEvents;/* for pbuffers only */
GLint db_mode; /* 0 = single buffered */
/* BACK_PIXMAP = use Pixmap for back buffer */
/* BACK_XIMAGE = use XImage for back buffer */
GLboolean swAlpha;
GLuint shm; /* X Shared Memory extension status: */
/* 0 = not available */
/* 1 = XImage support available */
/* 2 = Pixmap support available too */
#if defined(USE_XSHM) && !defined(XFree86Server)
XShmSegmentInfo shminfo;
#endif
XMesaImage *rowimage; /* Used for optimized span writing */
XMesaPixmap stipple_pixmap; /* For polygon stippling */
XMesaGC stipple_gc; /* For polygon stippling */
XMesaGC gc; /* scratch GC for span, line, tri drawing */
XMesaGC cleargc; /* GC for clearing the color buffer */
XMesaGC swapgc; /* GC for swapping the color buffers */
/* The following are here instead of in the XMesaVisual
* because they depend on the window's colormap.
*/
/* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
unsigned long color_table[576]; /* RGB -> pixel value */
/* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
GLubyte pixel_to_r[65536]; /* pixel value -> red */
GLubyte pixel_to_g[65536]; /* pixel value -> green */
GLubyte pixel_to_b[65536]; /* pixel value -> blue */
/* Used to do XAllocColor/XFreeColors accounting: */
int num_alloced;
#if defined(XFree86Server)
Pixel alloced_colors[256];
#else
unsigned long alloced_colors[256];
#endif
#if defined( FX )
/* For 3Dfx Glide only */
GLboolean FXisHackUsable; /* Can we render into window? */
GLboolean FXwindowHack; /* Are we rendering into a window? */
fxMesaContext FXctx;
#endif
/* GLX_EXT_texture_from_pixmap */
GLint TextureTarget; /** GLX_TEXTURE_1D_EXT, for example */
GLint TextureFormat; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
GLint TextureMipmap; /** 0 or 1 */
struct xmesa_buffer *Next; /* Linked list pointer: */
};
/**
* If pixelformat==PF_TRUECOLOR:
*/
#define PACK_TRUECOLOR( PIXEL, R, G, B ) \
PIXEL = xmesa->xm_visual->RtoPixel[R] \
| xmesa->xm_visual->GtoPixel[G] \
| xmesa->xm_visual->BtoPixel[B]; \
/**
* If pixelformat==PF_TRUEDITHER:
*/
#define PACK_TRUEDITHER( PIXEL, X, Y, R, G, B ) \
{ \
int d = xmesa->xm_visual->Kernel[((X)&3) | (((Y)&3)<<2)]; \
PIXEL = xmesa->xm_visual->RtoPixel[(R)+d] \
| xmesa->xm_visual->GtoPixel[(G)+d] \
| xmesa->xm_visual->BtoPixel[(B)+d]; \
}
/**
* If pixelformat==PF_8A8B8G8R:
*/
#define PACK_8A8B8G8R( R, G, B, A ) \
( ((A) << 24) | ((B) << 16) | ((G) << 8) | (R) )
/**
* Like PACK_8A8B8G8R() but don't use alpha. This is usually an acceptable
* shortcut.
*/
#define PACK_8B8G8R( R, G, B ) ( ((B) << 16) | ((G) << 8) | (R) )
/**
* If pixelformat==PF_8R8G8B:
*/
#define PACK_8R8G8B( R, G, B) ( ((R) << 16) | ((G) << 8) | (B) )
/**
* If pixelformat==PF_5R6G5B:
*/
#define PACK_5R6G5B( R, G, B) ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) )
/**
* If pixelformat==PF_8A8R8G8B:
*/
#define PACK_8A8R8G8B( R, G, B, A ) \
( ((A) << 24) | ((R) << 16) | ((G) << 8) | (B) )
/**
* If pixelformat==PF_DITHER:
*
* Improved 8-bit RGB dithering code contributed by Bob Mercier
* (mercier@hollywood.cinenet.net). Thanks Bob!
*/
#ifdef DITHER666
# define DITH_R 6
# define DITH_G 6
# define DITH_B 6
# define DITH_MIX(r,g,b) (((r) * DITH_G + (g)) * DITH_B + (b))
#else
# define DITH_R 5
# define DITH_G 9
# define DITH_B 5
# define DITH_MIX(r,g,b) (((g) << 6) | ((b) << 3) | (r))
#endif
#define DITH_DX 4
#define DITH_DY 4
#define DITH_N (DITH_DX * DITH_DY)
#define _dither(C, c, d) (((unsigned)((DITH_N * (C - 1) + 1) * c + d)) >> 12)
#define MAXC 256
extern const int xmesa_kernel8[DITH_DY * DITH_DX];
/* Dither for random X,Y */
#define DITHER_SETUP \
int __d; \
unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table;
#define DITHER( X, Y, R, G, B ) \
(__d = xmesa_kernel8[(((Y)&3)<<2) | ((X)&3)], \
ctable[DITH_MIX(_dither(DITH_R, (R), __d), \
_dither(DITH_G, (G), __d), \
_dither(DITH_B, (B), __d))])
/* Dither for random X, fixed Y */
#define XDITHER_SETUP(Y) \
int __d; \
unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table; \
const int *kernel = &xmesa_kernel8[ ((Y)&3) << 2 ];
#define XDITHER( X, R, G, B ) \
(__d = kernel[(X)&3], \
ctable[DITH_MIX(_dither(DITH_R, (R), __d), \
_dither(DITH_G, (G), __d), \
_dither(DITH_B, (B), __d))])
/*
* Dithering for flat-shaded triangles. Precompute all 16 possible
* pixel values given the triangle's RGB color. Contributed by Martin Shenk.
*/
#define FLAT_DITHER_SETUP( R, G, B ) \
GLushort ditherValues[16]; \
{ \
unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table; \
int msdr = (DITH_N*((DITH_R)-1)+1) * (R); \
int msdg = (DITH_N*((DITH_G)-1)+1) * (G); \
int msdb = (DITH_N*((DITH_B)-1)+1) * (B); \
int i; \
for (i=0;i<16;i++) { \
int k = xmesa_kernel8[i]; \
int j = DITH_MIX( (msdr+k)>>12, (msdg+k)>>12, (msdb+k)>>12 );\
ditherValues[i] = (GLushort) ctable[j]; \
} \
}
#define FLAT_DITHER_ROW_SETUP(Y) \
GLushort *ditherRow = ditherValues + ( ((Y)&3) << 2);
#define FLAT_DITHER(X) ditherRow[(X)&3]
/**
* If pixelformat==PF_LOOKUP:
*/
#define _dither_lookup(C, c) (((unsigned)((DITH_N * (C - 1) + 1) * c)) >> 12)
#define LOOKUP_SETUP \
unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table
#define LOOKUP( R, G, B ) \
ctable[DITH_MIX(_dither_lookup(DITH_R, (R)), \
_dither_lookup(DITH_G, (G)), \
_dither_lookup(DITH_B, (B)))]
/**
* If pixelformat==PF_HPCR:
*
* HP Color Recovery dithering (ad@lms.be 30/08/95)
* HP has on it's 8-bit 700-series computers, a feature called
* 'Color Recovery'. This allows near 24-bit output (so they say).
* It is enabled by selecting the 8-bit TrueColor visual AND
* corresponding colormap (see tkInitWindow) AND doing some special
* dither.
*/
extern const short xmesa_HPCR_DRGB[3][2][16];
#define DITHER_HPCR( X, Y, R, G, B ) \
( ((xmesa->xm_visual->hpcr_rgbTbl[0][R] + xmesa_HPCR_DRGB[0][(Y)&1][(X)&15]) & 0xE0) \
|(((xmesa->xm_visual->hpcr_rgbTbl[1][G] + xmesa_HPCR_DRGB[1][(Y)&1][(X)&15]) & 0xE0)>>3) \
| ((xmesa->xm_visual->hpcr_rgbTbl[2][B] + xmesa_HPCR_DRGB[2][(Y)&1][(X)&15])>>6) \
)
/**
* If pixelformat==PF_1BIT:
*/
extern const int xmesa_kernel1[16];
#define SETUP_1BIT int bitFlip = xmesa->xm_visual->bitFlip
#define DITHER_1BIT( X, Y, R, G, B ) \
(( ((int)(R)+(int)(G)+(int)(B)) > xmesa_kernel1[(((Y)&3) << 2) | ((X)&3)] ) ^ bitFlip)
/**
* If pixelformat==PF_GRAYSCALE:
*/
#define GRAY_RGB( R, G, B ) XMESA_BUFFER(ctx->DrawBuffer)->color_table[((R) + (G) + (B))/3]
/**
* Converts a GL window Y coord to an X window Y coord:
*/
#define YFLIP(XRB, Y) ((XRB)->bottom - (Y))
/**
* Return the address of a 1, 2 or 4-byte pixel in the buffer's XImage:
* X==0 is left, Y==0 is bottom.
*/
#define PIXEL_ADDR1(XRB, X, Y) \
( (XRB)->origin1 - (Y) * (XRB)->width1 + (X) )
#define PIXEL_ADDR2(XRB, X, Y) \
( (XRB)->origin2 - (Y) * (XRB)->width2 + (X) )
#define PIXEL_ADDR3(XRB, X, Y) \
( (bgr_t *) ( (XRB)->origin3 - (Y) * (XRB)->width3 + 3 * (X) ))
#define PIXEL_ADDR4(XRB, X, Y) \
( (XRB)->origin4 - (Y) * (XRB)->width4 + (X) )
/*
* External functions:
*/
extern struct xmesa_renderbuffer *
xmesa_create_renderbuffer(GLcontext *ctx, GLuint name, const GLvisual *visual,
GLboolean backBuffer);
extern void
xmesa_delete_framebuffer(struct gl_framebuffer *fb);
extern XMesaBuffer
xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis);
extern unsigned long
xmesa_color_to_pixel( GLcontext *ctx,
GLubyte r, GLubyte g, GLubyte b, GLubyte a,
GLuint pixelFormat );
extern void
xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b,
GLuint *width, GLuint *height);
extern void
xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer);
extern void
xmesa_init_driver_functions( XMesaVisual xmvisual,
struct dd_function_table *driver );
extern void
xmesa_update_state( GLcontext *ctx, GLbitfield new_state );
extern void
xmesa_set_renderbuffer_funcs(struct xmesa_renderbuffer *xrb,
enum pixel_format pixelformat, GLint depth);
extern void
xmesa_destroy_buffers_on_display(XMesaDisplay *dpy);
/**
* Using a function instead of an ordinary cast is safer.
*/
static INLINE struct xmesa_renderbuffer *
xmesa_renderbuffer(struct gl_renderbuffer *rb)
{
return (struct xmesa_renderbuffer *) rb;
}
/**
* Return pointer to XMesaContext corresponding to a Mesa GLcontext.
* Since we're using structure containment, it's just a cast!.
* XXX should use inlined function for better type safety.
*/
static INLINE XMesaContext
XMESA_CONTEXT(GLcontext *ctx)
{
return (XMesaContext) ctx;
}
/**
* Return pointer to XMesaBuffer corresponding to a Mesa GLframebuffer.
* Since we're using structure containment, it's just a cast!.
* XXX should use inlined function for better type safety.
*/
static INLINE XMesaBuffer
XMESA_BUFFER(GLframebuffer *b)
{
return (XMesaBuffer) b;
}
/* Plugged into the software rasterizer. Try to use internal
* swrast-style point, line and triangle functions.
*/
extern void xmesa_choose_point( GLcontext *ctx );
extern void xmesa_choose_line( GLcontext *ctx );
extern void xmesa_choose_triangle( GLcontext *ctx );
extern void xmesa_register_swrast_functions( GLcontext *ctx );
#define ENABLE_EXT_texure_compression_s3tc 0 /* SW texture compression */
#ifdef XFree86Server
#define ENABLE_EXT_timer_query 0
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
#define ENABLE_EXT_timer_query 1 /* should have 64-bit GLuint64EXT */
#else
#define ENABLE_EXT_timer_query 0 /* may not have 64-bit GLuint64EXT */
#endif
struct pipe_surface;
struct pipe_context;
struct xmesa_surface
{
struct softpipe_surface surface;
struct xmesa_renderbuffer *xrb;
};
extern void
xmesa_clear(struct pipe_context *pipe, struct pipe_surface *ps, GLuint value);
extern void
xmesa_clear_buffers(GLcontext *ctx, GLbitfield buffers);
extern struct pipe_context *
xmesa_create_softpipe(XMesaContext xm);
extern struct pipe_surface *
xmesa_surface_alloc(struct pipe_context *pipe, GLuint format);
extern struct pipe_surface *
xmesa_new_color_surface(struct pipe_context *pipe, GLuint format);
extern const GLuint *
xmesa_supported_formats(struct pipe_context *pipe, GLuint *numFormats);
#endif
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