1 /* $XFree86: xc/lib/GL/mesa/src/drv/r200/r200_span.c,v 1.1 2002/10/30 12:51:52 alanh Exp $ */
3 Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
5 The Weather Channel (TM) funded Tungsten Graphics to develop the
6 initial release of the Radeon 8500 driver under the XFree86 license.
7 This notice must be preserved.
9 Permission is hereby granted, free of charge, to any person obtaining
10 a copy of this software and associated documentation files (the
11 "Software"), to deal in the Software without restriction, including
12 without limitation the rights to use, copy, modify, merge, publish,
13 distribute, sublicense, and/or sell copies of the Software, and to
14 permit persons to whom the Software is furnished to do so, subject to
15 the following conditions:
17 The above copyright notice and this permission notice (including the
18 next paragraph) shall be included in all copies or substantial
19 portions of the Software.
21 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
24 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
25 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 **************************************************************************/
33 * Keith Whitwell <keith@tungstengraphics.com>
38 #include "swrast/swrast.h"
41 #include "r200_context.h"
42 #include "r200_ioctl.h"
43 #include "r200_state.h"
44 #include "r200_span.h"
50 r200ContextPtr rmesa = R200_CONTEXT(ctx); \
51 r200ScreenPtr r200Screen = rmesa->r200Screen; \
52 __DRIscreenPrivate *sPriv = rmesa->dri.screen; \
53 __DRIdrawablePrivate *dPriv = rmesa->dri.drawable; \
54 GLuint pitch = r200Screen->frontPitch * r200Screen->cpp; \
55 GLuint height = dPriv->h; \
56 char *buf = (char *)(sPriv->pFB + \
57 rmesa->state.color.drawOffset + \
58 (dPriv->x * r200Screen->cpp) + \
59 (dPriv->y * pitch)); \
60 char *read_buf = (char *)(sPriv->pFB + \
61 rmesa->state.pixel.readOffset + \
62 (dPriv->x * r200Screen->cpp) + \
63 (dPriv->y * pitch)); \
65 (void) read_buf; (void) buf; (void) p
67 #define LOCAL_DEPTH_VARS \
68 r200ContextPtr rmesa = R200_CONTEXT(ctx); \
69 r200ScreenPtr r200Screen = rmesa->r200Screen; \
70 __DRIscreenPrivate *sPriv = rmesa->dri.screen; \
71 __DRIdrawablePrivate *dPriv = rmesa->dri.drawable; \
72 GLuint height = dPriv->h; \
73 GLuint xo = dPriv->x; \
74 GLuint yo = dPriv->y; \
75 char *buf = (char *)(sPriv->pFB + r200Screen->depthOffset); \
78 #define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
81 #define CLIPPIXEL( _x, _y ) \
82 ((_x >= minx) && (_x < maxx) && (_y >= miny) && (_y < maxy))
85 #define CLIPSPAN( _x, _y, _n, _x1, _n1, _i ) \
86 if ( _y < miny || _y >= maxy ) { \
91 if ( _x1 < minx ) _i += (minx-_x1), n1 -= (minx-_x1), _x1 = minx; \
92 if ( _x1 + _n1 >= maxx ) n1 -= (_x1 + n1 - maxx); \
95 #define Y_FLIP( _y ) (height - _y - 1)
100 #define HW_CLIPLOOP() \
102 __DRIdrawablePrivate *dPriv = rmesa->dri.drawable; \
103 int _nc = dPriv->numClipRects; \
106 int minx = dPriv->pClipRects[_nc].x1 - dPriv->x; \
107 int miny = dPriv->pClipRects[_nc].y1 - dPriv->y; \
108 int maxx = dPriv->pClipRects[_nc].x2 - dPriv->x; \
109 int maxy = dPriv->pClipRects[_nc].y2 - dPriv->y;
111 #define HW_ENDCLIPLOOP() \
119 /* ================================================================
123 /* 16 bit, RGB565 color spanline and pixel functions
125 #define INIT_MONO_PIXEL(p, color) \
126 p = PACK_COLOR_565( color[0], color[1], color[2] )
128 #define WRITE_RGBA( _x, _y, r, g, b, a ) \
129 *(GLushort *)(buf + _x*2 + _y*pitch) = ((((int)r & 0xf8) << 8) | \
130 (((int)g & 0xfc) << 3) | \
131 (((int)b & 0xf8) >> 3))
133 #define WRITE_PIXEL( _x, _y, p ) \
134 *(GLushort *)(buf + _x*2 + _y*pitch) = p
136 #define READ_RGBA( rgba, _x, _y ) \
138 GLushort p = *(GLushort *)(read_buf + _x*2 + _y*pitch); \
139 rgba[0] = ((p >> 8) & 0xf8) * 255 / 0xf8; \
140 rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc; \
141 rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8; \
145 #define TAG(x) r200##x##_RGB565
148 /* 32 bit, ARGB8888 color spanline and pixel functions
150 #undef INIT_MONO_PIXEL
151 #define INIT_MONO_PIXEL(p, color) \
152 p = PACK_COLOR_8888( color[3], color[0], color[1], color[2] )
154 #define WRITE_RGBA( _x, _y, r, g, b, a ) \
156 *(GLuint *)(buf + _x*4 + _y*pitch) = ((b << 0) | \
162 #define WRITE_PIXEL( _x, _y, p ) \
164 *(GLuint *)(buf + _x*4 + _y*pitch) = p; \
167 #define READ_RGBA( rgba, _x, _y ) \
169 volatile GLuint *ptr = (volatile GLuint *)(read_buf + _x*4 + _y*pitch); \
171 rgba[0] = (p >> 16) & 0xff; \
172 rgba[1] = (p >> 8) & 0xff; \
173 rgba[2] = (p >> 0) & 0xff; \
174 rgba[3] = (p >> 24) & 0xff; \
177 #define TAG(x) r200##x##_ARGB8888
182 /* ================================================================
186 /* The Radeon family has depth tiling on all the time, so we have to convert
187 * the x,y coordinates into the memory bus address (mba) in the same
188 * manner as the engine. In each case, the linear block address (ba)
189 * is calculated, and then wired with x and y to produce the final
193 #define BIT(x,b) ((x & (1<<b))>>b)
194 static GLuint
r200_mba_z32( r200ContextPtr rmesa
,
197 GLuint pitch
= rmesa
->r200Screen
->frontPitch
;
198 GLuint b
= ((y
& 0x3FF) >> 4) * ((pitch
& 0xFFF) >> 5) + ((x
& 0x3FF) >> 5);
209 (((pitch
& 0x20) ? (b
& 0x01) : ((b
& 0x01) ^ (BIT(y
,4)))) << 11) |
214 static GLuint
r200_mba_z16( r200ContextPtr rmesa
, GLint x
, GLint y
)
216 GLuint pitch
= rmesa
->r200Screen
->frontPitch
;
217 GLuint b
= ((y
& 0x3FF) >> 4) * ((pitch
& 0xFFF) >> 6) + ((x
& 0x3FF) >> 6);
229 (((pitch
& 0x40) ? (b
& 0x01) : ((b
& 0x01) ^ (BIT(y
,4)))) << 11) |
235 /* 16-bit depth buffer functions
237 #define WRITE_DEPTH( _x, _y, d ) \
238 *(GLushort *)(buf + r200_mba_z16( rmesa, _x + xo, _y + yo )) = d;
240 #define READ_DEPTH( d, _x, _y ) \
241 d = *(GLushort *)(buf + r200_mba_z16( rmesa, _x + xo, _y + yo ));
243 #define TAG(x) r200##x##_16
244 #include "depthtmp.h"
246 /* 24 bit depth, 8 bit stencil depthbuffer functions
248 #define WRITE_DEPTH( _x, _y, d ) \
250 GLuint offset = r200_mba_z32( rmesa, _x + xo, _y + yo ); \
251 GLuint tmp = *(GLuint *)(buf + offset); \
253 tmp |= ((d) & 0x00ffffff); \
254 *(GLuint *)(buf + offset) = tmp; \
257 #define READ_DEPTH( d, _x, _y ) \
258 d = *(GLuint *)(buf + r200_mba_z32( rmesa, _x + xo, \
259 _y + yo )) & 0x00ffffff;
261 #define TAG(x) r200##x##_24_8
262 #include "depthtmp.h"
265 /* ================================================================
269 /* 24 bit depth, 8 bit stencil depthbuffer functions
271 #define WRITE_STENCIL( _x, _y, d ) \
273 GLuint offset = r200_mba_z32( rmesa, _x + xo, _y + yo ); \
274 GLuint tmp = *(GLuint *)(buf + offset); \
276 tmp |= (((d) & 0xff) << 24); \
277 *(GLuint *)(buf + offset) = tmp; \
280 #define READ_STENCIL( d, _x, _y ) \
282 GLuint offset = r200_mba_z32( rmesa, _x + xo, _y + yo ); \
283 GLuint tmp = *(GLuint *)(buf + offset); \
288 #define TAG(x) r200##x##_24_8
289 #include "stenciltmp.h"
293 * This function is called to specify which buffer to read and write
294 * for software rasterization (swrast) fallbacks. This doesn't necessarily
295 * correspond to glDrawBuffer() or glReadBuffer() calls.
297 static void r200SetBuffer( GLcontext
*ctx
,
298 GLframebuffer
*colorBuffer
,
301 r200ContextPtr rmesa
= R200_CONTEXT(ctx
);
303 switch ( bufferBit
) {
304 case DD_FRONT_LEFT_BIT
:
305 if ( rmesa
->doPageFlip
&& rmesa
->sarea
->pfCurrentPage
== 1 ) {
306 rmesa
->state
.pixel
.readOffset
= rmesa
->r200Screen
->backOffset
;
307 rmesa
->state
.pixel
.readPitch
= rmesa
->r200Screen
->backPitch
;
308 rmesa
->state
.color
.drawOffset
= rmesa
->r200Screen
->backOffset
;
309 rmesa
->state
.color
.drawPitch
= rmesa
->r200Screen
->backPitch
;
311 rmesa
->state
.pixel
.readOffset
= rmesa
->r200Screen
->frontOffset
;
312 rmesa
->state
.pixel
.readPitch
= rmesa
->r200Screen
->frontPitch
;
313 rmesa
->state
.color
.drawOffset
= rmesa
->r200Screen
->frontOffset
;
314 rmesa
->state
.color
.drawPitch
= rmesa
->r200Screen
->frontPitch
;
317 case DD_BACK_LEFT_BIT
:
318 if ( rmesa
->doPageFlip
&& rmesa
->sarea
->pfCurrentPage
== 1 ) {
319 rmesa
->state
.pixel
.readOffset
= rmesa
->r200Screen
->frontOffset
;
320 rmesa
->state
.pixel
.readPitch
= rmesa
->r200Screen
->frontPitch
;
321 rmesa
->state
.color
.drawOffset
= rmesa
->r200Screen
->frontOffset
;
322 rmesa
->state
.color
.drawPitch
= rmesa
->r200Screen
->frontPitch
;
324 rmesa
->state
.pixel
.readOffset
= rmesa
->r200Screen
->backOffset
;
325 rmesa
->state
.pixel
.readPitch
= rmesa
->r200Screen
->backPitch
;
326 rmesa
->state
.color
.drawOffset
= rmesa
->r200Screen
->backOffset
;
327 rmesa
->state
.color
.drawPitch
= rmesa
->r200Screen
->backPitch
;
331 _mesa_problem(ctx
, "Bad bufferBit in %s", __FUNCTION__
);
336 /* Move locking out to get reasonable span performance (10x better
337 * than doing this in HW_LOCK above). WaitForIdle() is the main
341 static void r200SpanRenderStart( GLcontext
*ctx
)
343 r200ContextPtr rmesa
= R200_CONTEXT( ctx
);
345 R200_FIREVERTICES( rmesa
);
346 LOCK_HARDWARE( rmesa
);
347 r200WaitForIdleLocked( rmesa
);
349 /* Read & rewrite the first pixel in the frame buffer. This should
350 * be a noop, right? In fact without this conform fails as reading
351 * from the framebuffer sometimes produces old results -- the
352 * on-card read cache gets mixed up and doesn't notice that the
353 * framebuffer has been updated.
355 * In the worst case this is buggy too as p might get the wrong
356 * value first time, so really need a hidden pixel somewhere for this.
360 volatile int *read_buf
= (volatile int *)(rmesa
->dri
.screen
->pFB
+
361 rmesa
->state
.pixel
.readOffset
);
367 static void r200SpanRenderFinish( GLcontext
*ctx
)
369 r200ContextPtr rmesa
= R200_CONTEXT( ctx
);
370 _swrast_flush( ctx
);
371 UNLOCK_HARDWARE( rmesa
);
374 void r200InitSpanFuncs( GLcontext
*ctx
)
376 r200ContextPtr rmesa
= R200_CONTEXT(ctx
);
377 struct swrast_device_driver
*swdd
= _swrast_GetDeviceDriverReference(ctx
);
379 swdd
->SetBuffer
= r200SetBuffer
;
381 switch ( rmesa
->r200Screen
->cpp
) {
383 swdd
->WriteRGBASpan
= r200WriteRGBASpan_RGB565
;
384 swdd
->WriteRGBSpan
= r200WriteRGBSpan_RGB565
;
385 swdd
->WriteMonoRGBASpan
= r200WriteMonoRGBASpan_RGB565
;
386 swdd
->WriteRGBAPixels
= r200WriteRGBAPixels_RGB565
;
387 swdd
->WriteMonoRGBAPixels
= r200WriteMonoRGBAPixels_RGB565
;
388 swdd
->ReadRGBASpan
= r200ReadRGBASpan_RGB565
;
389 swdd
->ReadRGBAPixels
= r200ReadRGBAPixels_RGB565
;
393 swdd
->WriteRGBASpan
= r200WriteRGBASpan_ARGB8888
;
394 swdd
->WriteRGBSpan
= r200WriteRGBSpan_ARGB8888
;
395 swdd
->WriteMonoRGBASpan
= r200WriteMonoRGBASpan_ARGB8888
;
396 swdd
->WriteRGBAPixels
= r200WriteRGBAPixels_ARGB8888
;
397 swdd
->WriteMonoRGBAPixels
= r200WriteMonoRGBAPixels_ARGB8888
;
398 swdd
->ReadRGBASpan
= r200ReadRGBASpan_ARGB8888
;
399 swdd
->ReadRGBAPixels
= r200ReadRGBAPixels_ARGB8888
;
406 switch ( rmesa
->glCtx
->Visual
.depthBits
) {
408 swdd
->ReadDepthSpan
= r200ReadDepthSpan_16
;
409 swdd
->WriteDepthSpan
= r200WriteDepthSpan_16
;
410 swdd
->ReadDepthPixels
= r200ReadDepthPixels_16
;
411 swdd
->WriteDepthPixels
= r200WriteDepthPixels_16
;
415 swdd
->ReadDepthSpan
= r200ReadDepthSpan_24_8
;
416 swdd
->WriteDepthSpan
= r200WriteDepthSpan_24_8
;
417 swdd
->ReadDepthPixels
= r200ReadDepthPixels_24_8
;
418 swdd
->WriteDepthPixels
= r200WriteDepthPixels_24_8
;
420 swdd
->ReadStencilSpan
= r200ReadStencilSpan_24_8
;
421 swdd
->WriteStencilSpan
= r200WriteStencilSpan_24_8
;
422 swdd
->ReadStencilPixels
= r200ReadStencilPixels_24_8
;
423 swdd
->WriteStencilPixels
= r200WriteStencilPixels_24_8
;
430 swdd
->SpanRenderStart
= r200SpanRenderStart
;
431 swdd
->SpanRenderFinish
= r200SpanRenderFinish
;