2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 #include "main/mtypes.h"
34 extern _glthread_Mutex _xmesa_lock
;
36 extern XMesaBuffer XMesaBufferList
;
38 /* for PF_8R8G8B24 pixel format */
46 struct xmesa_renderbuffer
;
49 /* Function pointer for clearing color buffers */
50 typedef void (*ClearFunc
)( struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
51 GLint x
, GLint y
, GLint width
, GLint height
);
56 /** Framebuffer pixel formats */
58 PF_Truecolor
, /**< TrueColor or DirectColor, any depth */
59 PF_Dither_True
, /**< TrueColor with dithering */
60 PF_8A8R8G8B
, /**< 32-bit TrueColor: 8-A, 8-R, 8-G, 8-B bits */
61 PF_8A8B8G8R
, /**< 32-bit TrueColor: 8-A, 8-B, 8-G, 8-R bits */
62 PF_8R8G8B
, /**< 32-bit TrueColor: 8-R, 8-G, 8-B bits */
63 PF_8R8G8B24
, /**< 24-bit TrueColor: 8-R, 8-G, 8-B bits */
64 PF_5R6G5B
, /**< 16-bit TrueColor: 5-R, 6-G, 5-B bits */
65 PF_Dither_5R6G5B
/**< 16-bit dithered TrueColor: 5-R, 6-G, 5-B */
70 * Visual inforation, derived from struct gl_config.
71 * Basically corresponds to an XVisualInfo.
74 struct gl_config mesa_visual
; /* Device independent visual parameters */
75 XMesaDisplay
*display
; /* The X11 display */
78 XMesaVisualInfo visinfo
; /* X's visual info (pointer to private copy) */
79 XVisualInfo
*vishandle
; /* Only used in fakeglx.c */
80 GLint BitsPerPixel
; /* True bits per pixel for XImages */
82 GLboolean ximage_flag
; /* Use XImage for back buffer (not pixmap)? */
84 enum pixel_format dithered_pf
; /* Pixel format when dithering */
85 enum pixel_format undithered_pf
;/* Pixel format when not dithering */
87 GLfloat RedGamma
; /* Gamma values, 1.0 is default */
91 /* For PF_TRUECOLOR */
92 GLint rshift
, gshift
, bshift
;/* Pixel color component shifts */
93 GLubyte Kernel
[16]; /* Dither kernel */
94 unsigned long RtoPixel
[512]; /* RGB to pixel conversion */
95 unsigned long GtoPixel
[512];
96 unsigned long BtoPixel
[512];
97 GLubyte PixelToR
[256]; /* Pixel to RGB conversion */
98 GLubyte PixelToG
[256];
99 GLubyte PixelToB
[256];
104 * Context info, derived from struct gl_context.
105 * Basically corresponds to a GLXContext.
107 struct xmesa_context
{
108 struct gl_context mesa
; /* the core library context (containment) */
109 XMesaVisual xm_visual
; /* Describes the buffers */
110 XMesaBuffer xm_buffer
; /* current span/point/line/triangle buffer */
112 XMesaDisplay
*display
; /* == xm_visual->display */
113 GLboolean swapbytes
; /* Host byte order != display byte order? */
114 GLboolean direct
; /* Direct rendering context? */
116 enum pixel_format pixelformat
;
118 GLubyte clearcolor
[4]; /* current clearing color */
119 unsigned long clearpixel
; /* current clearing pixel value */
124 * Types of X/GLX drawables we might render into.
127 WINDOW
, /* An X window */
128 GLXWINDOW
, /* GLX window */
129 PIXMAP
, /* GLX pixmap */
130 PBUFFER
/* GLX Pbuffer */
134 /** Values for db_mode: */
136 #define BACK_PIXMAP 1
137 #define BACK_XIMAGE 2
142 * An xmesa_renderbuffer represents the back or front color buffer.
143 * For the front color buffer:
144 * <drawable> is the X window
145 * For the back color buffer:
146 * Either <ximage> or <pixmap> will be used, never both.
147 * In any case, <drawable> always equals <pixmap>.
148 * For stand-alone Mesa, we could merge <drawable> and <pixmap> into one
149 * field. We don't do that for the server-side GLcore module because
150 * pixmaps and drawables are different and we'd need a bunch of casts.
152 struct xmesa_renderbuffer
154 struct gl_renderbuffer Base
; /* Base class */
156 XMesaBuffer Parent
; /**< The XMesaBuffer this renderbuffer belongs to */
157 XMesaDrawable drawable
; /* Usually the X window ID */
158 XMesaPixmap pixmap
; /* Back color buffer */
159 XMesaImage
*ximage
; /* The back buffer, if not using a Pixmap */
161 GLushort
*origin2
; /* used for PIXEL_ADDR2 macro */
163 GLubyte
*origin3
; /* used for PIXEL_ADDR3 macro */
165 GLuint
*origin4
; /* used for PIXEL_ADDR4 macro */
168 GLint bottom
; /* used for FLIP macro, equals height - 1 */
172 GLuint map_x
, map_y
, map_w
, map_h
;
174 XMesaImage
*map_ximage
;
179 * Framebuffer information, derived from.
180 * Basically corresponds to a GLXDrawable.
182 struct xmesa_buffer
{
183 struct gl_framebuffer mesa_buffer
; /* depth, stencil, accum, etc buffers */
184 /* This MUST BE FIRST! */
185 GLboolean wasCurrent
; /* was ever the current buffer? */
186 XMesaVisual xm_visual
; /* the X/Mesa visual */
188 XMesaDisplay
*display
;
189 BufferType type
; /* window, pixmap, pbuffer or glxwindow */
191 GLboolean largestPbuffer
; /**< for pbuffers */
192 GLboolean preservedContents
; /**< for pbuffers */
194 struct xmesa_renderbuffer
*frontxrb
; /* front color renderbuffer */
195 struct xmesa_renderbuffer
*backxrb
; /* back color renderbuffer */
197 XMesaColormap cmap
; /* the X colormap */
199 unsigned long selectedEvents
;/* for pbuffers only */
201 GLint db_mode
; /* 0 = single buffered */
202 /* BACK_PIXMAP = use Pixmap for back buffer */
203 /* BACK_XIMAGE = use XImage for back buffer */
204 GLuint shm
; /* X Shared Memory extension status: */
205 /* 0 = not available */
206 /* 1 = XImage support available */
207 /* 2 = Pixmap support available too */
208 #if defined(USE_XSHM)
209 XShmSegmentInfo shminfo
;
212 // XMesaImage *rowimage; /* Used for optimized span writing */
213 XMesaPixmap stipple_pixmap
; /* For polygon stippling */
214 XMesaGC stipple_gc
; /* For polygon stippling */
216 XMesaGC gc
; /* scratch GC for span, line, tri drawing */
217 XMesaGC cleargc
; /* GC for clearing the color buffer */
218 XMesaGC swapgc
; /* GC for swapping the color buffers */
220 /* The following are here instead of in the XMesaVisual
221 * because they depend on the window's colormap.
224 /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
225 unsigned long color_table
[576]; /* RGB -> pixel value */
227 /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
228 GLubyte pixel_to_r
[65536]; /* pixel value -> red */
229 GLubyte pixel_to_g
[65536]; /* pixel value -> green */
230 GLubyte pixel_to_b
[65536]; /* pixel value -> blue */
232 /* Used to do XAllocColor/XFreeColors accounting: */
234 unsigned long alloced_colors
[256];
236 /* GLX_EXT_texture_from_pixmap */
237 GLint TextureTarget
; /** GLX_TEXTURE_1D_EXT, for example */
238 GLint TextureFormat
; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
239 GLint TextureMipmap
; /** 0 or 1 */
241 struct xmesa_buffer
*Next
; /* Linked list pointer: */
246 * If pixelformat==PF_TRUECOLOR:
248 #define PACK_TRUECOLOR( PIXEL, R, G, B ) \
249 PIXEL = xmesa->xm_visual->RtoPixel[R] \
250 | xmesa->xm_visual->GtoPixel[G] \
251 | xmesa->xm_visual->BtoPixel[B]; \
255 * If pixelformat==PF_TRUEDITHER:
257 #define PACK_TRUEDITHER( PIXEL, X, Y, R, G, B ) \
259 int d = xmesa->xm_visual->Kernel[((X)&3) | (((Y)&3)<<2)]; \
260 PIXEL = xmesa->xm_visual->RtoPixel[(R)+d] \
261 | xmesa->xm_visual->GtoPixel[(G)+d] \
262 | xmesa->xm_visual->BtoPixel[(B)+d]; \
268 * If pixelformat==PF_8A8B8G8R:
270 #define PACK_8A8B8G8R( R, G, B, A ) \
271 ( ((A) << 24) | ((B) << 16) | ((G) << 8) | (R) )
275 * Like PACK_8A8B8G8R() but don't use alpha. This is usually an acceptable
278 #define PACK_8B8G8R( R, G, B ) ( ((B) << 16) | ((G) << 8) | (R) )
283 * If pixelformat==PF_8R8G8B:
285 #define PACK_8R8G8B( R, G, B) ( ((R) << 16) | ((G) << 8) | (B) )
289 * If pixelformat==PF_5R6G5B:
291 #define PACK_5R6G5B( R, G, B) ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) )
295 * If pixelformat==PF_8A8R8G8B:
297 #define PACK_8A8R8G8B( R, G, B, A ) \
298 ( ((A) << 24) | ((R) << 16) | ((G) << 8) | (B) )
304 * Converts a GL window Y coord to an X window Y coord:
306 #define YFLIP(XRB, Y) ((XRB)->bottom - (Y))
310 * Return the address of a 2, 3 or 4-byte pixel in the buffer's XImage:
311 * X==0 is left, Y==0 is bottom.
313 #define PIXEL_ADDR2(XRB, X, Y) \
314 ( (XRB)->origin2 - (Y) * (XRB)->width2 + (X) )
316 #define PIXEL_ADDR3(XRB, X, Y) \
317 ( (bgr_t *) ( (XRB)->origin3 - (Y) * (XRB)->width3 + 3 * (X) ))
319 #define PIXEL_ADDR4(XRB, X, Y) \
320 ( (XRB)->origin4 - (Y) * (XRB)->width4 + (X) )
325 * External functions:
328 extern struct xmesa_renderbuffer
*
329 xmesa_new_renderbuffer(struct gl_context
*ctx
, GLuint name
,
330 const struct xmesa_visual
*xmvis
,
331 GLboolean backBuffer
);
334 xmesa_delete_framebuffer(struct gl_framebuffer
*fb
);
337 xmesa_find_buffer(XMesaDisplay
*dpy
, XMesaColormap cmap
, XMesaBuffer notThis
);
340 xmesa_color_to_pixel( struct gl_context
*ctx
,
341 GLubyte r
, GLubyte g
, GLubyte b
, GLubyte a
,
342 GLuint pixelFormat
);
345 xmesa_get_window_size(XMesaDisplay
*dpy
, XMesaBuffer b
,
346 GLuint
*width
, GLuint
*height
);
349 xmesa_check_and_update_buffer_size(XMesaContext xmctx
, XMesaBuffer drawBuffer
);
352 xmesa_init_driver_functions( XMesaVisual xmvisual
,
353 struct dd_function_table
*driver
);
356 xmesa_update_state( struct gl_context
*ctx
, GLbitfield new_state
);
360 xmesa_MapRenderbuffer(struct gl_context
*ctx
,
361 struct gl_renderbuffer
*rb
,
362 GLuint x
, GLuint y
, GLuint w
, GLuint h
,
364 GLubyte
**mapOut
, GLint
*rowStrideOut
);
367 xmesa_UnmapRenderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
370 xmesa_destroy_buffers_on_display(XMesaDisplay
*dpy
);
374 * Using a function instead of an ordinary cast is safer.
376 static INLINE
struct xmesa_renderbuffer
*
377 xmesa_renderbuffer(struct gl_renderbuffer
*rb
)
379 return (struct xmesa_renderbuffer
*) rb
;
384 * Return pointer to XMesaContext corresponding to a Mesa struct gl_context.
385 * Since we're using structure containment, it's just a cast!.
387 static INLINE XMesaContext
388 XMESA_CONTEXT(struct gl_context
*ctx
)
390 return (XMesaContext
) ctx
;
395 * Return pointer to XMesaBuffer corresponding to a Mesa struct gl_framebuffer.
396 * Since we're using structure containment, it's just a cast!.
398 static INLINE XMesaBuffer
399 XMESA_BUFFER(struct gl_framebuffer
*b
)
401 return (XMesaBuffer
) b
;
405 /* Plugged into the software rasterizer. Try to use internal
406 * swrast-style point, line and triangle functions.
408 extern void xmesa_choose_point( struct gl_context
*ctx
);
409 extern void xmesa_choose_line( struct gl_context
*ctx
);
410 extern void xmesa_choose_triangle( struct gl_context
*ctx
);
413 extern void xmesa_register_swrast_functions( struct gl_context
*ctx
);
417 #define ENABLE_EXT_texure_compression_s3tc 0 /* SW texture compression */
419 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
420 #define ENABLE_EXT_timer_query 1 /* should have 64-bit GLuint64EXT */
422 #define ENABLE_EXT_timer_query 0 /* may not have 64-bit GLuint64EXT */
426 #define TEST_META_FUNCS 0