Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
5564 | serge | 1 | /************************************************************************** |
2 | * |
||
3 | * Copyright 2006 VMware, Inc. |
||
4 | * All Rights Reserved. |
||
5 | * |
||
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: |
||
13 | * |
||
14 | * The above copyright notice and this permission notice (including the |
||
15 | * next paragraph) shall be included in all copies or substantial portionsalloc |
||
16 | * of the Software. |
||
17 | * |
||
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 VMWARE 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. |
||
25 | * |
||
26 | **************************************************************************/ |
||
27 | |||
28 | #include "main/blend.h" |
||
29 | #include "main/glheader.h" |
||
30 | #include "main/enums.h" |
||
31 | #include "main/image.h" |
||
32 | #include "main/colormac.h" |
||
33 | #include "main/condrender.h" |
||
34 | #include "main/mtypes.h" |
||
35 | #include "main/macros.h" |
||
36 | #include "main/pbo.h" |
||
37 | #include "main/bufferobj.h" |
||
38 | #include "main/state.h" |
||
39 | #include "main/texobj.h" |
||
40 | #include "main/context.h" |
||
41 | #include "main/fbobject.h" |
||
42 | #include "swrast/swrast.h" |
||
43 | #include "drivers/common/meta.h" |
||
44 | |||
45 | #include "brw_context.h" |
||
46 | #include "intel_screen.h" |
||
47 | #include "intel_batchbuffer.h" |
||
48 | #include "intel_blit.h" |
||
49 | #include "intel_fbo.h" |
||
50 | #include "intel_image.h" |
||
51 | #include "intel_buffers.h" |
||
52 | #include "intel_pixel.h" |
||
53 | #include "intel_reg.h" |
||
54 | |||
55 | |||
56 | #define FILE_DEBUG_FLAG DEBUG_PIXEL |
||
57 | |||
58 | |||
59 | /* Unlike the other intel_pixel_* functions, the expectation here is |
||
60 | * that the incoming data is not in a PBO. With the XY_TEXT blit |
||
61 | * method, there's no benefit haveing it in a PBO, but we could |
||
62 | * implement a path based on XY_MONO_SRC_COPY_BLIT which might benefit |
||
63 | * PBO bitmaps. I think they are probably pretty rare though - I |
||
64 | * wonder if Xgl uses them? |
||
65 | */ |
||
66 | static const GLubyte *map_pbo( struct gl_context *ctx, |
||
67 | GLsizei width, GLsizei height, |
||
68 | const struct gl_pixelstore_attrib *unpack, |
||
69 | const GLubyte *bitmap ) |
||
70 | { |
||
71 | GLubyte *buf; |
||
72 | |||
73 | if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, |
||
74 | GL_COLOR_INDEX, GL_BITMAP, |
||
75 | INT_MAX, (const GLvoid *) bitmap)) { |
||
76 | _mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)"); |
||
77 | return NULL; |
||
78 | } |
||
79 | |||
80 | buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, unpack->BufferObj->Size, |
||
81 | GL_MAP_READ_BIT, |
||
82 | unpack->BufferObj, |
||
83 | MAP_INTERNAL); |
||
84 | if (!buf) { |
||
85 | _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)"); |
||
86 | return NULL; |
||
87 | } |
||
88 | |||
89 | return ADD_POINTERS(buf, bitmap); |
||
90 | } |
||
91 | |||
92 | static bool test_bit( const GLubyte *src, GLuint bit ) |
||
93 | { |
||
94 | return (src[bit/8] & (1<<(bit % 8))) ? 1 : 0; |
||
95 | } |
||
96 | |||
97 | static void set_bit( GLubyte *dest, GLuint bit ) |
||
98 | { |
||
99 | dest[bit/8] |= 1 << (bit % 8); |
||
100 | } |
||
101 | |||
102 | /* Extract a rectangle's worth of data from the bitmap. Called |
||
103 | * per chunk of HW-sized bitmap. |
||
104 | */ |
||
105 | static GLuint get_bitmap_rect(GLsizei width, GLsizei height, |
||
106 | const struct gl_pixelstore_attrib *unpack, |
||
107 | const GLubyte *bitmap, |
||
108 | GLuint x, GLuint y, |
||
109 | GLuint w, GLuint h, |
||
110 | GLubyte *dest, |
||
111 | GLuint row_align, |
||
112 | bool invert) |
||
113 | { |
||
114 | GLuint src_offset = (x + unpack->SkipPixels) & 0x7; |
||
115 | GLuint mask = unpack->LsbFirst ? 0 : 7; |
||
116 | GLuint bit = 0; |
||
117 | GLint row, col; |
||
118 | GLint first, last; |
||
119 | GLint incr; |
||
120 | GLuint count = 0; |
||
121 | |||
122 | DBG("%s %d,%d %dx%d bitmap %dx%d skip %d src_offset %d mask %d\n", |
||
123 | __func__, x,y,w,h,width,height,unpack->SkipPixels, src_offset, mask); |
||
124 | |||
125 | if (invert) { |
||
126 | first = h-1; |
||
127 | last = 0; |
||
128 | incr = -1; |
||
129 | } |
||
130 | else { |
||
131 | first = 0; |
||
132 | last = h-1; |
||
133 | incr = 1; |
||
134 | } |
||
135 | |||
136 | /* Require that dest be pre-zero'd. |
||
137 | */ |
||
138 | for (row = first; row != (last+incr); row += incr) { |
||
139 | const GLubyte *rowsrc = _mesa_image_address2d(unpack, bitmap, |
||
140 | width, height, |
||
141 | GL_COLOR_INDEX, GL_BITMAP, |
||
142 | y + row, x); |
||
143 | |||
144 | for (col = 0; col < w; col++, bit++) { |
||
145 | if (test_bit(rowsrc, (col + src_offset) ^ mask)) { |
||
146 | set_bit(dest, bit ^ 7); |
||
147 | count++; |
||
148 | } |
||
149 | } |
||
150 | |||
151 | if (row_align) |
||
152 | bit = ALIGN(bit, row_align); |
||
153 | } |
||
154 | |||
155 | return count; |
||
156 | } |
||
157 | |||
158 | /** |
||
159 | * Returns the low Y value of the vertical range given, flipped according to |
||
160 | * whether the framebuffer is or not. |
||
161 | */ |
||
162 | static inline int |
||
163 | y_flip(struct gl_framebuffer *fb, int y, int height) |
||
164 | { |
||
165 | if (_mesa_is_user_fbo(fb)) |
||
166 | return y; |
||
167 | else |
||
168 | return fb->Height - y - height; |
||
169 | } |
||
170 | |||
171 | /* |
||
172 | * Render a bitmap. |
||
173 | */ |
||
174 | static bool |
||
175 | do_blit_bitmap( struct gl_context *ctx, |
||
176 | GLint dstx, GLint dsty, |
||
177 | GLsizei width, GLsizei height, |
||
178 | const struct gl_pixelstore_attrib *unpack, |
||
179 | const GLubyte *bitmap ) |
||
180 | { |
||
181 | struct brw_context *brw = brw_context(ctx); |
||
182 | struct gl_framebuffer *fb = ctx->DrawBuffer; |
||
183 | struct intel_renderbuffer *irb; |
||
184 | GLfloat tmpColor[4]; |
||
185 | GLubyte ubcolor[4]; |
||
186 | GLuint color; |
||
187 | GLsizei bitmap_width = width; |
||
188 | GLsizei bitmap_height = height; |
||
189 | GLint px, py; |
||
190 | GLuint stipple[32]; |
||
191 | GLint orig_dstx = dstx; |
||
192 | GLint orig_dsty = dsty; |
||
193 | |||
194 | /* Update draw buffer bounds */ |
||
195 | _mesa_update_state(ctx); |
||
196 | |||
197 | if (ctx->Depth.Test) { |
||
198 | /* The blit path produces incorrect results when depth testing is on. |
||
199 | * It seems the blit Z coord is always 1.0 (the far plane) so fragments |
||
200 | * will likely be obscured by other, closer geometry. |
||
201 | */ |
||
202 | return false; |
||
203 | } |
||
204 | |||
205 | intel_prepare_render(brw); |
||
206 | |||
207 | if (fb->_NumColorDrawBuffers != 1) { |
||
208 | perf_debug("accelerated glBitmap() only supports rendering to a " |
||
209 | "single color buffer\n"); |
||
210 | return false; |
||
211 | } |
||
212 | |||
213 | irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]); |
||
214 | |||
215 | if (_mesa_is_bufferobj(unpack->BufferObj)) { |
||
216 | bitmap = map_pbo(ctx, width, height, unpack, bitmap); |
||
217 | if (bitmap == NULL) |
||
218 | return true; /* even though this is an error, we're done */ |
||
219 | } |
||
220 | |||
221 | COPY_4V(tmpColor, ctx->Current.RasterColor); |
||
222 | |||
223 | if (_mesa_need_secondary_color(ctx)) { |
||
224 | ADD_3V(tmpColor, tmpColor, ctx->Current.RasterSecondaryColor); |
||
225 | } |
||
226 | |||
227 | UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[0], tmpColor[0]); |
||
228 | UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[1], tmpColor[1]); |
||
229 | UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[2], tmpColor[2]); |
||
230 | UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[3], tmpColor[3]); |
||
231 | |||
232 | switch (_mesa_get_render_format(ctx, intel_rb_format(irb))) { |
||
233 | case MESA_FORMAT_B8G8R8A8_UNORM: |
||
234 | case MESA_FORMAT_B8G8R8X8_UNORM: |
||
235 | color = PACK_COLOR_8888(ubcolor[3], ubcolor[0], ubcolor[1], ubcolor[2]); |
||
236 | break; |
||
237 | case MESA_FORMAT_B5G6R5_UNORM: |
||
238 | color = PACK_COLOR_565(ubcolor[0], ubcolor[1], ubcolor[2]); |
||
239 | break; |
||
240 | default: |
||
241 | perf_debug("Unsupported format %s in accelerated glBitmap()\n", |
||
242 | _mesa_get_format_name(irb->mt->format)); |
||
243 | return false; |
||
244 | } |
||
245 | |||
246 | if (!intel_check_blit_fragment_ops(ctx, tmpColor[3] == 1.0F)) |
||
247 | return false; |
||
248 | |||
249 | /* Clip to buffer bounds and scissor. */ |
||
250 | if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin, |
||
251 | fb->_Xmax, fb->_Ymax, |
||
252 | &dstx, &dsty, &width, &height)) |
||
253 | goto out; |
||
254 | |||
255 | dsty = y_flip(fb, dsty, height); |
||
256 | |||
257 | #define DY 32 |
||
258 | #define DX 32 |
||
259 | |||
260 | /* The blitter has no idea about fast color clears, so we need to resolve |
||
261 | * the miptree before we do anything. |
||
262 | */ |
||
263 | intel_miptree_resolve_color(brw, irb->mt); |
||
264 | |||
265 | /* Chop it all into chunks that can be digested by hardware: */ |
||
266 | for (py = 0; py < height; py += DY) { |
||
267 | for (px = 0; px < width; px += DX) { |
||
268 | int h = MIN2(DY, height - py); |
||
269 | int w = MIN2(DX, width - px); |
||
270 | GLuint sz = ALIGN(ALIGN(w,8) * h, 64)/8; |
||
271 | GLenum logic_op = ctx->Color.ColorLogicOpEnabled ? |
||
272 | ctx->Color.LogicOp : GL_COPY; |
||
273 | |||
274 | assert(sz <= sizeof(stipple)); |
||
275 | memset(stipple, 0, sz); |
||
276 | |||
277 | /* May need to adjust this when padding has been introduced in |
||
278 | * sz above: |
||
279 | * |
||
280 | * Have to translate destination coordinates back into source |
||
281 | * coordinates. |
||
282 | */ |
||
283 | int count = get_bitmap_rect(bitmap_width, bitmap_height, unpack, |
||
284 | bitmap, |
||
285 | -orig_dstx + (dstx + px), |
||
286 | -orig_dsty + y_flip(fb, dsty + py, h), |
||
287 | w, h, |
||
288 | (GLubyte *)stipple, |
||
289 | 8, |
||
290 | _mesa_is_winsys_fbo(fb)); |
||
291 | if (count == 0) |
||
292 | continue; |
||
293 | |||
294 | if (!intelEmitImmediateColorExpandBlit(brw, |
||
295 | irb->mt->cpp, |
||
296 | (GLubyte *)stipple, |
||
297 | sz, |
||
298 | color, |
||
299 | irb->mt->pitch, |
||
300 | irb->mt->bo, |
||
301 | 0, |
||
302 | irb->mt->tiling, |
||
303 | dstx + px, |
||
304 | dsty + py, |
||
305 | w, h, |
||
306 | logic_op)) { |
||
307 | return false; |
||
308 | } |
||
309 | |||
310 | if (ctx->Query.CurrentOcclusionObject) |
||
311 | ctx->Query.CurrentOcclusionObject->Result += count; |
||
312 | } |
||
313 | } |
||
314 | out: |
||
315 | |||
316 | if (unlikely(INTEL_DEBUG & DEBUG_SYNC)) |
||
317 | intel_batchbuffer_flush(brw); |
||
318 | |||
319 | if (_mesa_is_bufferobj(unpack->BufferObj)) { |
||
320 | /* done with PBO so unmap it now */ |
||
321 | ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL); |
||
322 | } |
||
323 | |||
324 | return true; |
||
325 | } |
||
326 | |||
327 | |||
328 | /* There are a large number of possible ways to implement bitmap on |
||
329 | * this hardware, most of them have some sort of drawback. Here are a |
||
330 | * few that spring to mind: |
||
331 | * |
||
332 | * Blit: |
||
333 | * - XY_MONO_SRC_BLT_CMD |
||
334 | * - use XY_SETUP_CLIP_BLT for cliprect clipping. |
||
335 | * - XY_TEXT_BLT |
||
336 | * - XY_TEXT_IMMEDIATE_BLT |
||
337 | * - blit per cliprect, subject to maximum immediate data size. |
||
338 | * - XY_COLOR_BLT |
||
339 | * - per pixel or run of pixels |
||
340 | * - XY_PIXEL_BLT |
||
341 | * - good for sparse bitmaps |
||
342 | * |
||
343 | * 3D engine: |
||
344 | * - Point per pixel |
||
345 | * - Translate bitmap to an alpha texture and render as a quad |
||
346 | * - Chop bitmap up into 32x32 squares and render w/polygon stipple. |
||
347 | */ |
||
348 | void |
||
349 | intelBitmap(struct gl_context * ctx, |
||
350 | GLint x, GLint y, |
||
351 | GLsizei width, GLsizei height, |
||
352 | const struct gl_pixelstore_attrib *unpack, |
||
353 | const GLubyte * pixels) |
||
354 | { |
||
355 | if (!_mesa_check_conditional_render(ctx)) |
||
356 | return; |
||
357 | |||
358 | if (do_blit_bitmap(ctx, x, y, width, height, |
||
359 | unpack, pixels)) |
||
360 | return; |
||
361 | |||
362 | _mesa_meta_Bitmap(ctx, x, y, width, height, unpack, pixels); |
||
363 | }=>>>>><>(bit><(bit> |