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 GLint BitsPerPixel
; /* True bits per pixel for XImages */
83 GLboolean ximage_flag
; /* Use XImage for back buffer (not pixmap)? */
85 enum pixel_format dithered_pf
; /* Pixel format when dithering */
86 enum pixel_format undithered_pf
;/* Pixel format when not dithering */
88 GLfloat RedGamma
; /* Gamma values, 1.0 is default */
92 /* For PF_TRUECOLOR */
93 GLint rshift
, gshift
, bshift
;/* Pixel color component shifts */
94 GLubyte Kernel
[16]; /* Dither kernel */
95 unsigned long RtoPixel
[512]; /* RGB to pixel conversion */
96 unsigned long GtoPixel
[512];
97 unsigned long BtoPixel
[512];
98 GLubyte PixelToR
[256]; /* Pixel to RGB conversion */
99 GLubyte PixelToG
[256];
100 GLubyte PixelToB
[256];
105 * Context info, derived from struct gl_context.
106 * Basically corresponds to a GLXContext.
108 struct xmesa_context
{
109 struct gl_context mesa
; /* the core library context (containment) */
110 XMesaVisual xm_visual
; /* Describes the buffers */
111 XMesaBuffer xm_buffer
; /* current span/point/line/triangle buffer */
113 XMesaDisplay
*display
; /* == xm_visual->display */
114 GLboolean swapbytes
; /* Host byte order != display byte order? */
115 GLboolean direct
; /* Direct rendering context? */
117 enum pixel_format pixelformat
;
119 GLubyte clearcolor
[4]; /* current clearing color */
120 unsigned long clearpixel
; /* current clearing pixel value */
125 * Types of X/GLX drawables we might render into.
128 WINDOW
, /* An X window */
129 GLXWINDOW
, /* GLX window */
130 PIXMAP
, /* GLX pixmap */
131 PBUFFER
/* GLX Pbuffer */
135 /** Values for db_mode: */
137 #define BACK_PIXMAP 1
138 #define BACK_XIMAGE 2
143 * An xmesa_renderbuffer represents the back or front color buffer.
144 * For the front color buffer:
145 * <drawable> is the X window
146 * For the back color buffer:
147 * Either <ximage> or <pixmap> will be used, never both.
148 * In any case, <drawable> always equals <pixmap>.
149 * For stand-alone Mesa, we could merge <drawable> and <pixmap> into one
150 * field. We don't do that for the server-side GLcore module because
151 * pixmaps and drawables are different and we'd need a bunch of casts.
153 struct xmesa_renderbuffer
155 struct swrast_renderbuffer Base
; /* Base class */
157 XMesaBuffer Parent
; /**< The XMesaBuffer this renderbuffer belongs to */
158 XMesaDrawable drawable
; /* Usually the X window ID */
159 XMesaPixmap pixmap
; /* Back color buffer */
160 XMesaImage
*ximage
; /* The back buffer, if not using a Pixmap */
162 GLushort
*origin2
; /* used for PIXEL_ADDR2 macro */
164 GLubyte
*origin3
; /* used for PIXEL_ADDR3 macro */
166 GLuint
*origin4
; /* used for PIXEL_ADDR4 macro */
169 GLint bottom
; /* used for FLIP macro, equals height - 1 */
173 GLuint map_x
, map_y
, map_w
, map_h
;
175 XMesaImage
*map_ximage
;
180 * Framebuffer information, derived from.
181 * Basically corresponds to a GLXDrawable.
183 struct xmesa_buffer
{
184 struct gl_framebuffer mesa_buffer
; /* depth, stencil, accum, etc buffers */
185 /* This MUST BE FIRST! */
186 GLboolean wasCurrent
; /* was ever the current buffer? */
187 XMesaVisual xm_visual
; /* the X/Mesa visual */
189 XMesaDisplay
*display
;
190 BufferType type
; /* window, pixmap, pbuffer or glxwindow */
192 GLboolean largestPbuffer
; /**< for pbuffers */
193 GLboolean preservedContents
; /**< for pbuffers */
195 struct xmesa_renderbuffer
*frontxrb
; /* front color renderbuffer */
196 struct xmesa_renderbuffer
*backxrb
; /* back color renderbuffer */
198 XMesaColormap cmap
; /* the X colormap */
200 unsigned long selectedEvents
;/* for pbuffers only */
202 GLint db_mode
; /* 0 = single buffered */
203 /* BACK_PIXMAP = use Pixmap for back buffer */
204 /* BACK_XIMAGE = use XImage for back buffer */
205 GLuint shm
; /* X Shared Memory extension status: */
206 /* 0 = not available */
207 /* 1 = XImage support available */
208 /* 2 = Pixmap support available too */
209 #if defined(USE_XSHM)
210 XShmSegmentInfo shminfo
;
213 // XMesaImage *rowimage; /* Used for optimized span writing */
214 XMesaPixmap stipple_pixmap
; /* For polygon stippling */
215 XMesaGC stipple_gc
; /* For polygon stippling */
217 XMesaGC gc
; /* scratch GC for span, line, tri drawing */
218 XMesaGC cleargc
; /* GC for clearing the color buffer */
219 XMesaGC swapgc
; /* GC for swapping the color buffers */
221 /* The following are here instead of in the XMesaVisual
222 * because they depend on the window's colormap.
225 /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
226 unsigned long color_table
[576]; /* RGB -> pixel value */
228 /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
229 GLubyte pixel_to_r
[65536]; /* pixel value -> red */
230 GLubyte pixel_to_g
[65536]; /* pixel value -> green */
231 GLubyte pixel_to_b
[65536]; /* pixel value -> blue */
233 /* Used to do XAllocColor/XFreeColors accounting: */
235 unsigned long alloced_colors
[256];
237 /* GLX_EXT_texture_from_pixmap */
238 GLint TextureTarget
; /** GLX_TEXTURE_1D_EXT, for example */
239 GLint TextureFormat
; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
240 GLint TextureMipmap
; /** 0 or 1 */
242 struct xmesa_buffer
*Next
; /* Linked list pointer: */
247 * If pixelformat==PF_TRUECOLOR:
249 #define PACK_TRUECOLOR( PIXEL, R, G, B ) \
250 PIXEL = xmesa->xm_visual->RtoPixel[R] \
251 | xmesa->xm_visual->GtoPixel[G] \
252 | xmesa->xm_visual->BtoPixel[B]; \
256 * If pixelformat==PF_TRUEDITHER:
258 #define PACK_TRUEDITHER( PIXEL, X, Y, R, G, B ) \
260 int d = xmesa->xm_visual->Kernel[((X)&3) | (((Y)&3)<<2)]; \
261 PIXEL = xmesa->xm_visual->RtoPixel[(R)+d] \
262 | xmesa->xm_visual->GtoPixel[(G)+d] \
263 | xmesa->xm_visual->BtoPixel[(B)+d]; \
269 * If pixelformat==PF_8A8B8G8R:
271 #define PACK_8A8B8G8R( R, G, B, A ) \
272 ( ((A) << 24) | ((B) << 16) | ((G) << 8) | (R) )
276 * Like PACK_8A8B8G8R() but don't use alpha. This is usually an acceptable
279 #define PACK_8B8G8R( R, G, B ) ( ((B) << 16) | ((G) << 8) | (R) )
284 * If pixelformat==PF_8R8G8B:
286 #define PACK_8R8G8B( R, G, B) ( ((R) << 16) | ((G) << 8) | (B) )
290 * If pixelformat==PF_5R6G5B:
292 #define PACK_5R6G5B( R, G, B) ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) )
296 * If pixelformat==PF_8A8R8G8B:
298 #define PACK_8A8R8G8B( R, G, B, A ) \
299 ( ((A) << 24) | ((R) << 16) | ((G) << 8) | (B) )
305 * Converts a GL window Y coord to an X window Y coord:
307 #define YFLIP(XRB, Y) ((XRB)->bottom - (Y))
311 * Return the address of a 2, 3 or 4-byte pixel in the buffer's XImage:
312 * X==0 is left, Y==0 is bottom.
314 #define PIXEL_ADDR2(XRB, X, Y) \
315 ( (XRB)->origin2 - (Y) * (XRB)->width2 + (X) )
317 #define PIXEL_ADDR3(XRB, X, Y) \
318 ( (bgr_t *) ( (XRB)->origin3 - (Y) * (XRB)->width3 + 3 * (X) ))
320 #define PIXEL_ADDR4(XRB, X, Y) \
321 ( (XRB)->origin4 - (Y) * (XRB)->width4 + (X) )
326 * External functions:
329 extern struct xmesa_renderbuffer
*
330 xmesa_new_renderbuffer(struct gl_context
*ctx
, GLuint name
,
331 const struct xmesa_visual
*xmvis
,
332 GLboolean backBuffer
);
335 xmesa_delete_framebuffer(struct gl_framebuffer
*fb
);
338 xmesa_find_buffer(XMesaDisplay
*dpy
, XMesaColormap cmap
, XMesaBuffer notThis
);
341 xmesa_color_to_pixel( struct gl_context
*ctx
,
342 GLubyte r
, GLubyte g
, GLubyte b
, GLubyte a
,
343 GLuint pixelFormat
);
346 xmesa_get_window_size(XMesaDisplay
*dpy
, XMesaBuffer b
,
347 GLuint
*width
, GLuint
*height
);
350 xmesa_check_and_update_buffer_size(XMesaContext xmctx
, XMesaBuffer drawBuffer
);
353 xmesa_init_driver_functions( XMesaVisual xmvisual
,
354 struct dd_function_table
*driver
);
357 xmesa_update_state( struct gl_context
*ctx
, GLbitfield new_state
);
361 xmesa_MapRenderbuffer(struct gl_context
*ctx
,
362 struct gl_renderbuffer
*rb
,
363 GLuint x
, GLuint y
, GLuint w
, GLuint h
,
365 GLubyte
**mapOut
, GLint
*rowStrideOut
);
368 xmesa_UnmapRenderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
371 xmesa_destroy_buffers_on_display(XMesaDisplay
*dpy
);
375 * Using a function instead of an ordinary cast is safer.
377 static inline struct xmesa_renderbuffer
*
378 xmesa_renderbuffer(struct gl_renderbuffer
*rb
)
380 return (struct xmesa_renderbuffer
*) rb
;
385 * Return pointer to XMesaContext corresponding to a Mesa struct gl_context.
386 * Since we're using structure containment, it's just a cast!.
388 static inline XMesaContext
389 XMESA_CONTEXT(struct gl_context
*ctx
)
391 return (XMesaContext
) ctx
;
396 * Return pointer to XMesaBuffer corresponding to a Mesa struct gl_framebuffer.
397 * Since we're using structure containment, it's just a cast!.
399 static inline XMesaBuffer
400 XMESA_BUFFER(struct gl_framebuffer
*b
)
402 return (XMesaBuffer
) b
;
406 /* Plugged into the software rasterizer. Try to use internal
407 * swrast-style point, line and triangle functions.
409 extern void xmesa_choose_point( struct gl_context
*ctx
);
410 extern void xmesa_choose_line( struct gl_context
*ctx
);
411 extern void xmesa_choose_triangle( struct gl_context
*ctx
);
414 extern void xmesa_register_swrast_functions( struct gl_context
*ctx
);
418 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
419 #define ENABLE_EXT_timer_query 1 /* should have 64-bit GLuint64EXT */
421 #define ENABLE_EXT_timer_query 0 /* may not have 64-bit GLuint64EXT */
425 #define TEST_META_FUNCS 0