1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portionsalloc
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
34 #include "bufferobj.h"
35 #include "swrast/swrast.h"
37 #include "intel_screen.h"
38 #include "intel_context.h"
39 #include "intel_ioctl.h"
40 #include "intel_batchbuffer.h"
41 #include "intel_blit.h"
42 #include "intel_regions.h"
43 #include "intel_buffer_objects.h"
44 #include "intel_buffers.h"
45 #include "intel_pixel.h"
46 #include "intel_reg.h"
49 #define FILE_DEBUG_FLAG DEBUG_PIXEL
52 /* Unlike the other intel_pixel_* functions, the expectation here is
53 * that the incoming data is not in a PBO. With the XY_TEXT blit
54 * method, there's no benefit haveing it in a PBO, but we could
55 * implement a path based on XY_MONO_SRC_COPY_BLIT which might benefit
56 * PBO bitmaps. I think they are probably pretty rare though - I
57 * wonder if Xgl uses them?
59 static const GLubyte
*map_pbo( GLcontext
*ctx
,
60 GLsizei width
, GLsizei height
,
61 const struct gl_pixelstore_attrib
*unpack
,
62 const GLubyte
*bitmap
)
66 if (!_mesa_validate_pbo_access(2, unpack
, width
, height
, 1,
67 GL_COLOR_INDEX
, GL_BITMAP
,
69 _mesa_error(ctx
, GL_INVALID_OPERATION
,"glBitmap(invalid PBO access)");
73 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
77 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBitmap(PBO is mapped)");
81 return ADD_POINTERS(buf
, bitmap
);
84 static GLboolean
test_bit( const GLubyte
*src
,
87 return (src
[bit
/8] & (1<<(bit
% 8))) ? 1 : 0;
90 static void set_bit( GLubyte
*dest
,
93 dest
[bit
/8] |= 1 << (bit
% 8);
96 /* Extract a rectangle's worth of data from the bitmap. Called
99 static GLuint
get_bitmap_rect(GLsizei width
, GLsizei height
,
100 const struct gl_pixelstore_attrib
*unpack
,
101 const GLubyte
*bitmap
,
108 GLuint src_offset
= (x
+ unpack
->SkipPixels
) & 0x7;
109 GLuint mask
= unpack
->LsbFirst
? 0 : 7;
116 if (INTEL_DEBUG
& DEBUG_PIXEL
)
117 _mesa_printf("%s %d,%d %dx%d bitmap %dx%d skip %d src_offset %d mask %d\n",
118 __FUNCTION__
, x
,y
,w
,h
,width
,height
,unpack
->SkipPixels
, src_offset
, mask
);
131 /* Require that dest be pre-zero'd.
133 for (row
= first
; row
!= (last
+incr
); row
+= incr
) {
134 const GLubyte
*rowsrc
= _mesa_image_address2d(unpack
, bitmap
,
136 GL_COLOR_INDEX
, GL_BITMAP
,
139 for (col
= 0; col
< w
; col
++, bit
++) {
140 if (test_bit(rowsrc
, (col
+ src_offset
) ^ mask
)) {
141 set_bit(dest
, bit
^ 7);
147 bit
= ALIGN(bit
, row_align
);
160 do_blit_bitmap( GLcontext
*ctx
,
161 GLint dstx
, GLint dsty
,
162 GLsizei width
, GLsizei height
,
163 const struct gl_pixelstore_attrib
*unpack
,
164 const GLubyte
*bitmap
)
166 struct intel_context
*intel
= intel_context(ctx
);
167 struct intel_region
*dst
= intel_drawbuf_region(intel
);
170 GLuint color8888
, color565
;
175 if (unpack
->BufferObj
->Name
) {
176 bitmap
= map_pbo(ctx
, width
, height
, unpack
, bitmap
);
178 return GL_TRUE
; /* even though this is an error, we're done */
181 COPY_4V(tmpColor
, ctx
->Current
.RasterColor
);
183 if (NEED_SECONDARY_COLOR(ctx
)) {
184 ADD_3V(tmpColor
, tmpColor
, ctx
->Current
.RasterSecondaryColor
);
187 UNCLAMPED_FLOAT_TO_UBYTE(ubcolor
[0], tmpColor
[0]);
188 UNCLAMPED_FLOAT_TO_UBYTE(ubcolor
[1], tmpColor
[1]);
189 UNCLAMPED_FLOAT_TO_UBYTE(ubcolor
[2], tmpColor
[2]);
190 UNCLAMPED_FLOAT_TO_UBYTE(ubcolor
[3], tmpColor
[3]);
192 color8888
= INTEL_PACKCOLOR8888(ubcolor
[0], ubcolor
[1], ubcolor
[2], ubcolor
[3]);
193 color565
= INTEL_PACKCOLOR565(ubcolor
[0], ubcolor
[1], ubcolor
[2]);
195 /* Does zoom apply to bitmaps?
197 if (!intel_check_blit_fragment_ops(ctx
, tmpColor
[3] == 1.0F
) ||
198 ctx
->Pixel
.ZoomX
!= 1.0F
||
199 ctx
->Pixel
.ZoomY
!= 1.0F
)
202 LOCK_HARDWARE(intel
);
204 if (intel
->driDrawable
->numClipRects
) {
205 __DRIdrawablePrivate
*dPriv
= intel
->driDrawable
;
206 drm_clip_rect_t
*box
= dPriv
->pClipRects
;
207 drm_clip_rect_t dest_rect
;
208 GLint nbox
= dPriv
->numClipRects
;
209 GLint srcx
= 0, srcy
= 0;
210 GLint orig_screen_x1
, orig_screen_y2
;
214 orig_screen_x1
= dPriv
->x
+ dstx
;
215 orig_screen_y2
= dPriv
->y
+ (dPriv
->h
- dsty
);
217 /* Do scissoring in GL coordinates:
219 if (ctx
->Scissor
.Enabled
)
221 GLint x
= ctx
->Scissor
.X
;
222 GLint y
= ctx
->Scissor
.Y
;
223 GLuint w
= ctx
->Scissor
.Width
;
224 GLuint h
= ctx
->Scissor
.Height
;
226 if (!_mesa_clip_to_region(x
, y
, x
+w
-1, y
+h
-1, &dstx
, &dsty
, &width
, &height
))
230 /* Convert from GL to hardware coordinates:
232 dsty
= dPriv
->y
+ (dPriv
->h
- dsty
- height
);
233 dstx
= dPriv
->x
+ dstx
;
235 dest_rect
.x1
= dstx
< 0 ? 0 : dstx
;
236 dest_rect
.y1
= dsty
< 0 ? 0 : dsty
;
237 dest_rect
.x2
= dstx
+ width
< 0 ? 0 : dstx
+ width
;
238 dest_rect
.y2
= dsty
+ height
< 0 ? 0 : dsty
+ height
;
240 for (i
= 0; i
< nbox
; i
++) {
241 drm_clip_rect_t rect
;
246 if (!intel_intersect_cliprects(&rect
, &dest_rect
, &box
[i
]))
249 /* Now go back to GL coordinates to figure out what subset of
250 * the bitmap we are uploading for this cliprect:
252 box_w
= rect
.x2
- rect
.x1
;
253 box_h
= rect
.y2
- rect
.y1
;
254 srcx
= rect
.x1
- orig_screen_x1
;
255 srcy
= orig_screen_y2
- rect
.y2
;
261 /* Then, finally, chop it all into chunks that can be
262 * digested by hardware:
264 for (py
= 0; py
< box_h
; py
+= DY
) {
265 for (px
= 0; px
< box_w
; px
+= DX
) {
266 int h
= MIN2(DY
, box_h
- py
);
267 int w
= MIN2(DX
, box_w
- px
);
268 GLuint sz
= ALIGN(ALIGN(w
,8) * h
, 64)/8;
269 GLenum logic_op
= ctx
->Color
.ColorLogicOpEnabled
?
270 ctx
->Color
.LogicOp
: GL_COPY
;
272 assert(sz
<= sizeof(stipple
));
273 memset(stipple
, 0, sz
);
275 /* May need to adjust this when padding has been introduced in
278 if (get_bitmap_rect(width
, height
, unpack
,
280 srcx
+ px
, srcy
+ py
, w
, h
,
288 intelEmitImmediateColorExpandBlit( intel
,
292 (dst
->cpp
== 2) ? color565
: color8888
,
306 UNLOCK_HARDWARE(intel
);
309 if (unpack
->BufferObj
->Name
) {
310 /* done with PBO so unmap it now */
311 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
322 /* There are a large number of possible ways to implement bitmap on
323 * this hardware, most of them have some sort of drawback. Here are a
324 * few that spring to mind:
327 * - XY_MONO_SRC_BLT_CMD
328 * - use XY_SETUP_CLIP_BLT for cliprect clipping.
330 * - XY_TEXT_IMMEDIATE_BLT
331 * - blit per cliprect, subject to maximum immediate data size.
333 * - per pixel or run of pixels
335 * - good for sparse bitmaps
339 * - Translate bitmap to an alpha texture and render as a quad
340 * - Chop bitmap up into 32x32 squares and render w/polygon stipple.
343 intelBitmap(GLcontext
* ctx
,
345 GLsizei width
, GLsizei height
,
346 const struct gl_pixelstore_attrib
*unpack
,
347 const GLubyte
* pixels
)
349 if (do_blit_bitmap(ctx
, x
, y
, width
, height
,
353 if (INTEL_DEBUG
& DEBUG_PIXEL
)
354 _mesa_printf("%s: fallback to swrast\n", __FUNCTION__
);
356 _swrast_Bitmap(ctx
, x
, y
, width
, height
, unpack
, pixels
);