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Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/x11/xmesaP.h')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/drivers/x11/xmesaP.h | 555 |
1 files changed, 555 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/x11/xmesaP.h b/nx-X11/extras/Mesa/src/mesa/drivers/x11/xmesaP.h new file mode 100644 index 000000000..26255ae56 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/drivers/x11/xmesaP.h @@ -0,0 +1,555 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3 + * + * Copyright (C) 1999-2005 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 + + +#ifdef XFree86Server +# include "GL/xf86glx.h" +# include "xf86glx_util.h" +#elif defined(USE_XSHM) +# include <X11/extensions/XShm.h> +#endif +#include "GL/xmesa.h" +#include "mtypes.h" +#if defined(FX) +#include "GL/fxmesa.h" +#include "../glide/fxdrv.h" +#endif + + +extern _glthread_Mutex _xmesa_lock; + + +/* 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, + GLboolean all, 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_8A8B8G8R, /**< 32-bit TrueColor: 8-A, 8-B, 8-G, 8-R */ + PF_8R8G8B, /**< 32-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_8R8G8B24, /**< 24-bit TrueColor: 8-R, 8-G, 8-B bits */ + PF_Dither_5R6G5B, /**< 16-bit dithered TrueColor: 5-R, 6-G, 5-B */ + PF_8A8R8G8B /**< 32-bit TrueColor: 8-A, 8-R, 8-G, 8-B */ +}; + + +/* + * "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; +}; + + +/* + * "Derived" from __GLcontextRec. 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 */ +}; + + + +typedef enum { + WINDOW, /* An X window */ + GLXWINDOW, /* GLX window */ + PIXMAP, /* GLX pixmap */ + PBUFFER /* GLX Pbuffer */ +} BufferType; + + +/** + * 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 +{ + struct gl_renderbuffer Base; /* Base class */ + + 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 */ + + ClearFunc clearFunc; +}; + + +/* + * "Derived" from GLframebuffer. 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_state; /* 0 = single buffered */ + /* BACK_PIXMAP = use Pixmap for back buffer */ + /* BACK_XIMAGE = use XImage for back buffer */ + +#ifndef XFree86Server + GLuint shm; /* X Shared Memory extension status: */ + /* 0 = not available */ + /* 1 = XImage support available */ + /* 2 = Pixmap support available too */ +#ifdef USE_XSHM + XShmSegmentInfo shminfo; +#endif +#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 + + struct xmesa_buffer *Next; /* Linked list pointer: */ +}; + + +/* Values for xmesa->db_state: */ +#define FRONT_PIXMAP 1 +#define BACK_PIXMAP 2 +#define BACK_XIMAGE 4 + + +/* + * 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) ) + + + + +/* + * Return pointer to XMesaContext corresponding to a Mesa GLcontext. + * Since we're using structure containment, it's just a cast!. + */ +#define XMESA_CONTEXT(MESACTX) ((XMesaContext) (MESACTX)) + +/* + * Return pointer to XMesaBuffer corresponding to a Mesa GLframebuffer. + * Since we're using structure containment, it's just a cast!. + */ +#define XMESA_BUFFER(MESABUFF) ((XMesaBuffer) (MESABUFF)) + + + +/* + * External functions: + */ + +extern struct xmesa_renderbuffer * +xmesa_new_renderbuffer(GLcontext *ctx, GLuint name, GLboolean rgbMode); + +extern unsigned long +xmesa_color_to_pixel( GLcontext *ctx, + GLubyte r, GLubyte g, GLubyte b, GLubyte a, + GLuint pixelFormat ); + +extern void +xmesa_alloc_back_buffer(XMesaBuffer b, GLuint width, GLuint height); + +extern void xmesa_resize_buffers(GLcontext *ctx, GLframebuffer *buffer, + GLuint width, GLuint height); + +extern void xmesa_init_driver_functions( XMesaVisual xmvisual, + struct dd_function_table *driver ); + +extern void xmesa_update_state( GLcontext *ctx, GLuint new_state ); + +extern void +xmesa_set_renderbuffer_funcs(struct xmesa_renderbuffer *xrb, + enum pixel_format pixelformat, GLint depth); + + +/* 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 ); + + + +/* XXX this is a hack to implement shared display lists with 3Dfx */ +extern XMesaBuffer XMesaCreateWindowBuffer2( XMesaVisual v, + XMesaWindow w, + XMesaContext c ); + +/* + * These are the extra routines required for integration with XFree86. + * None of these routines should be user visible. -KEM + */ +extern void XMesaSetVisualDisplay( XMesaDisplay *dpy, XMesaVisual v ); +extern GLboolean XMesaForceCurrent(XMesaContext c); +extern GLboolean XMesaLoseCurrent(XMesaContext c); +extern void XMesaReset( void ); + + +#define SWTC 0 /* SW texture compression */ + + +#endif |