2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
30 #include "c11/threads.h"
32 #include "main/mtypes.h"
33 #include "swrast/s_context.h"
36 extern mtx_t _xmesa_lock
;
38 extern XMesaBuffer XMesaBufferList
;
40 /* for PF_8R8G8B24 pixel format */
48 struct xmesa_renderbuffer
;
51 /* Function pointer for clearing color buffers */
52 typedef void (*ClearFunc
)( struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
53 GLint x
, GLint y
, GLint width
, GLint height
);
58 /** Framebuffer pixel formats */
60 PF_Truecolor
, /**< TrueColor or DirectColor, any depth */
61 PF_Dither_True
, /**< TrueColor with dithering */
62 PF_8A8R8G8B
, /**< 32-bit TrueColor: 8-A, 8-R, 8-G, 8-B bits */
63 PF_8A8B8G8R
, /**< 32-bit TrueColor: 8-A, 8-B, 8-G, 8-R bits */
64 PF_8R8G8B
, /**< 32-bit TrueColor: 8-R, 8-G, 8-B bits */
65 PF_8R8G8B24
, /**< 24-bit TrueColor: 8-R, 8-G, 8-B bits */
66 PF_5R6G5B
, /**< 16-bit TrueColor: 5-R, 6-G, 5-B bits */
67 PF_Dither_5R6G5B
/**< 16-bit dithered TrueColor: 5-R, 6-G, 5-B */
72 * Visual inforation, derived from struct gl_config.
73 * Basically corresponds to an XVisualInfo.
76 struct gl_config mesa_visual
; /* Device independent visual parameters */
77 XMesaDisplay
*display
; /* The X11 display */
80 XMesaVisualInfo visinfo
; /* X's visual info (pointer to private copy) */
81 XVisualInfo
*vishandle
; /* Only used in fakeglx.c */
82 GLint BitsPerPixel
; /* True bits per pixel for XImages */
84 GLboolean ximage_flag
; /* Use XImage for back buffer (not pixmap)? */
86 enum pixel_format dithered_pf
; /* Pixel format when dithering */
87 enum pixel_format undithered_pf
;/* Pixel format when not dithering */
89 GLfloat RedGamma
; /* Gamma values, 1.0 is default */
93 /* For PF_TRUECOLOR */
94 GLint rshift
, gshift
, bshift
;/* Pixel color component shifts */
95 GLubyte Kernel
[16]; /* Dither kernel */
96 unsigned long RtoPixel
[512]; /* RGB to pixel conversion */
97 unsigned long GtoPixel
[512];
98 unsigned long BtoPixel
[512];
99 GLubyte PixelToR
[256]; /* Pixel to RGB conversion */
100 GLubyte PixelToG
[256];
101 GLubyte PixelToB
[256];
106 * Context info, derived from struct gl_context.
107 * Basically corresponds to a GLXContext.
109 struct xmesa_context
{
110 struct gl_context mesa
; /* the core library context (containment) */
111 XMesaVisual xm_visual
; /* Describes the buffers */
112 XMesaBuffer xm_buffer
; /* current span/point/line/triangle buffer */
114 XMesaDisplay
*display
; /* == xm_visual->display */
115 GLboolean swapbytes
; /* Host byte order != display byte order? */
116 GLboolean direct
; /* Direct rendering context? */
118 enum pixel_format pixelformat
;
120 GLubyte clearcolor
[4]; /* current clearing color */
121 unsigned long clearpixel
; /* current clearing pixel value */
126 * Types of X/GLX drawables we might render into.
129 WINDOW
, /* An X window */
130 GLXWINDOW
, /* GLX window */
131 PIXMAP
, /* GLX pixmap */
132 PBUFFER
/* GLX Pbuffer */
136 /** Values for db_mode: */
138 #define BACK_PIXMAP 1
139 #define BACK_XIMAGE 2
144 * An xmesa_renderbuffer represents the back or front color buffer.
145 * For the front color buffer:
146 * <drawable> is the X window
147 * For the back color buffer:
148 * Either <ximage> or <pixmap> will be used, never both.
149 * In any case, <drawable> always equals <pixmap>.
150 * For stand-alone Mesa, we could merge <drawable> and <pixmap> into one
151 * field. We don't do that for the server-side GLcore module because
152 * pixmaps and drawables are different and we'd need a bunch of casts.
154 struct xmesa_renderbuffer
156 struct swrast_renderbuffer Base
; /* Base class */
158 XMesaBuffer Parent
; /**< The XMesaBuffer this renderbuffer belongs to */
159 XMesaDrawable drawable
; /* Usually the X window ID */
160 XMesaPixmap pixmap
; /* Back color buffer */
161 XMesaImage
*ximage
; /* The back buffer, if not using a Pixmap */
163 GLushort
*origin2
; /* used for PIXEL_ADDR2 macro */
165 GLubyte
*origin3
; /* used for PIXEL_ADDR3 macro */
167 GLuint
*origin4
; /* used for PIXEL_ADDR4 macro */
170 GLint bottom
; /* used for FLIP macro, equals height - 1 */
174 GLuint map_x
, map_y
, map_w
, map_h
;
176 XMesaImage
*map_ximage
;
181 * Framebuffer information, derived from.
182 * Basically corresponds to a GLXDrawable.
184 struct xmesa_buffer
{
185 struct gl_framebuffer mesa_buffer
; /* depth, stencil, accum, etc buffers */
186 /* This MUST BE FIRST! */
187 GLboolean wasCurrent
; /* was ever the current buffer? */
188 XMesaVisual xm_visual
; /* the X/Mesa visual */
190 XMesaDisplay
*display
;
191 BufferType type
; /* window, pixmap, pbuffer or glxwindow */
193 GLboolean largestPbuffer
; /**< for pbuffers */
194 GLboolean preservedContents
; /**< for pbuffers */
196 struct xmesa_renderbuffer
*frontxrb
; /* front color renderbuffer */
197 struct xmesa_renderbuffer
*backxrb
; /* back color renderbuffer */
199 XMesaColormap cmap
; /* the X colormap */
201 unsigned long selectedEvents
;/* for pbuffers only */
203 GLint db_mode
; /* 0 = single buffered */
204 /* BACK_PIXMAP = use Pixmap for back buffer */
205 /* BACK_XIMAGE = use XImage for back buffer */
206 GLuint shm
; /* X Shared Memory extension status: */
207 /* 0 = not available */
208 /* 1 = XImage support available */
209 /* 2 = Pixmap support available too */
210 #if defined(USE_XSHM)
211 XShmSegmentInfo shminfo
;
214 // XMesaImage *rowimage; /* Used for optimized span writing */
215 XMesaPixmap stipple_pixmap
; /* For polygon stippling */
216 XMesaGC stipple_gc
; /* For polygon stippling */
218 XMesaGC gc
; /* scratch GC for span, line, tri drawing */
219 XMesaGC cleargc
; /* GC for clearing the color buffer */
220 XMesaGC swapgc
; /* GC for swapping the color buffers */
222 /* The following are here instead of in the XMesaVisual
223 * because they depend on the window's colormap.
226 /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
227 unsigned long color_table
[576]; /* RGB -> pixel value */
229 /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
230 GLubyte pixel_to_r
[65536]; /* pixel value -> red */
231 GLubyte pixel_to_g
[65536]; /* pixel value -> green */
232 GLubyte pixel_to_b
[65536]; /* pixel value -> blue */
234 /* Used to do XAllocColor/XFreeColors accounting: */
236 unsigned long alloced_colors
[256];
238 /* GLX_EXT_texture_from_pixmap */
239 GLint TextureTarget
; /** GLX_TEXTURE_1D_EXT, for example */
240 GLint TextureFormat
; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
241 GLint TextureMipmap
; /** 0 or 1 */
243 struct xmesa_buffer
*Next
; /* Linked list pointer: */
248 * If pixelformat==PF_TRUECOLOR:
250 #define PACK_TRUECOLOR( PIXEL, R, G, B ) \
251 PIXEL = xmesa->xm_visual->RtoPixel[R] \
252 | xmesa->xm_visual->GtoPixel[G] \
253 | xmesa->xm_visual->BtoPixel[B]; \
257 * If pixelformat==PF_TRUEDITHER:
259 #define PACK_TRUEDITHER( PIXEL, X, Y, R, G, B ) \
261 int d = xmesa->xm_visual->Kernel[((X)&3) | (((Y)&3)<<2)]; \
262 PIXEL = xmesa->xm_visual->RtoPixel[(R)+d] \
263 | xmesa->xm_visual->GtoPixel[(G)+d] \
264 | xmesa->xm_visual->BtoPixel[(B)+d]; \
270 * If pixelformat==PF_8A8B8G8R:
272 #define PACK_8A8B8G8R( R, G, B, A ) \
273 ( ((A) << 24) | ((B) << 16) | ((G) << 8) | (R) )
277 * Like PACK_8A8B8G8R() but don't use alpha. This is usually an acceptable
280 #define PACK_8B8G8R( R, G, B ) ( ((B) << 16) | ((G) << 8) | (R) )
285 * If pixelformat==PF_8R8G8B:
287 #define PACK_8R8G8B( R, G, B) ( ((R) << 16) | ((G) << 8) | (B) )
291 * If pixelformat==PF_5R6G5B:
293 #define PACK_5R6G5B( R, G, B) ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) )
297 * If pixelformat==PF_8A8R8G8B:
299 #define PACK_8A8R8G8B( R, G, B, A ) \
300 ( ((A) << 24) | ((R) << 16) | ((G) << 8) | (B) )
306 * Converts a GL window Y coord to an X window Y coord:
308 #define YFLIP(XRB, Y) ((XRB)->bottom - (Y))
312 * Return the address of a 2, 3 or 4-byte pixel in the buffer's XImage:
313 * X==0 is left, Y==0 is bottom.
315 #define PIXEL_ADDR2(XRB, X, Y) \
316 ( (XRB)->origin2 - (Y) * (XRB)->width2 + (X) )
318 #define PIXEL_ADDR3(XRB, X, Y) \
319 ( (bgr_t *) ( (XRB)->origin3 - (Y) * (XRB)->width3 + 3 * (X) ))
321 #define PIXEL_ADDR4(XRB, X, Y) \
322 ( (XRB)->origin4 - (Y) * (XRB)->width4 + (X) )
327 * External functions:
330 extern struct xmesa_renderbuffer
*
331 xmesa_new_renderbuffer(struct gl_context
*ctx
, GLuint name
,
332 const struct xmesa_visual
*xmvis
,
333 GLboolean backBuffer
);
336 xmesa_delete_framebuffer(struct gl_framebuffer
*fb
);
339 xmesa_find_buffer(XMesaDisplay
*dpy
, XMesaColormap cmap
, XMesaBuffer notThis
);
342 xmesa_color_to_pixel( struct gl_context
*ctx
,
343 GLubyte r
, GLubyte g
, GLubyte b
, GLubyte a
,
344 GLuint pixelFormat
);
347 xmesa_get_window_size(XMesaDisplay
*dpy
, XMesaBuffer b
,
348 GLuint
*width
, GLuint
*height
);
351 xmesa_check_and_update_buffer_size(XMesaContext xmctx
, XMesaBuffer drawBuffer
);
354 xmesa_init_driver_functions( XMesaVisual xmvisual
,
355 struct dd_function_table
*driver
);
358 xmesa_update_state( struct gl_context
*ctx
, GLbitfield new_state
);
362 xmesa_MapRenderbuffer(struct gl_context
*ctx
,
363 struct gl_renderbuffer
*rb
,
364 GLuint x
, GLuint y
, GLuint w
, GLuint h
,
366 GLubyte
**mapOut
, GLint
*rowStrideOut
);
369 xmesa_UnmapRenderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
372 xmesa_destroy_buffers_on_display(XMesaDisplay
*dpy
);
376 * Using a function instead of an ordinary cast is safer.
378 static INLINE
struct xmesa_renderbuffer
*
379 xmesa_renderbuffer(struct gl_renderbuffer
*rb
)
381 return (struct xmesa_renderbuffer
*) rb
;
386 * Return pointer to XMesaContext corresponding to a Mesa struct gl_context.
387 * Since we're using structure containment, it's just a cast!.
389 static INLINE XMesaContext
390 XMESA_CONTEXT(struct gl_context
*ctx
)
392 return (XMesaContext
) ctx
;
397 * Return pointer to XMesaBuffer corresponding to a Mesa struct gl_framebuffer.
398 * Since we're using structure containment, it's just a cast!.
400 static INLINE XMesaBuffer
401 XMESA_BUFFER(struct gl_framebuffer
*b
)
403 return (XMesaBuffer
) b
;
407 /* Plugged into the software rasterizer. Try to use internal
408 * swrast-style point, line and triangle functions.
410 extern void xmesa_choose_point( struct gl_context
*ctx
);
411 extern void xmesa_choose_line( struct gl_context
*ctx
);
412 extern void xmesa_choose_triangle( struct gl_context
*ctx
);
415 extern void xmesa_register_swrast_functions( struct gl_context
*ctx
);
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