1 /**************************************************************************
2 *
3 * Copyright 2007 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 portions
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 /*
29 * Authors:
30 * Brian Paul
31 */
32
33
34 #include "main/image.h"
35 #include "main/macros.h"
36
37 #include "st_context.h"
38 #include "st_texture.h"
39 #include "st_cb_bitmap.h"
40 #include "st_cb_blit.h"
41 #include "st_cb_fbo.h"
42 #include "st_manager.h"
43 #include "st_scissor.h"
44 #include "st_util.h"
45
46 #include "util/format/u_format.h"
47
48 static void
st_BlitFramebuffer(struct gl_context * ctx,struct gl_framebuffer * readFB,struct gl_framebuffer * drawFB,GLint srcX0,GLint srcY0,GLint srcX1,GLint srcY1,GLint dstX0,GLint dstY0,GLint dstX1,GLint dstY1,GLbitfield mask,GLenum filter)49 st_BlitFramebuffer(struct gl_context *ctx,
50 struct gl_framebuffer *readFB,
51 struct gl_framebuffer *drawFB,
52 GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
53 GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
54 GLbitfield mask, GLenum filter)
55 {
56 const GLbitfield depthStencil = (GL_DEPTH_BUFFER_BIT |
57 GL_STENCIL_BUFFER_BIT);
58 struct st_context *st = st_context(ctx);
59 const uint pFilter = ((filter == GL_NEAREST)
60 ? PIPE_TEX_FILTER_NEAREST
61 : PIPE_TEX_FILTER_LINEAR);
62 struct {
63 GLint srcX0, srcY0, srcX1, srcY1;
64 GLint dstX0, dstY0, dstX1, dstY1;
65 } clip;
66 struct pipe_blit_info blit;
67
68 st_manager_validate_framebuffers(st);
69
70 /* Make sure bitmap rendering has landed in the framebuffers */
71 st_flush_bitmap_cache(st);
72 st_invalidate_readpix_cache(st);
73
74 clip.srcX0 = srcX0;
75 clip.srcY0 = srcY0;
76 clip.srcX1 = srcX1;
77 clip.srcY1 = srcY1;
78 clip.dstX0 = dstX0;
79 clip.dstY0 = dstY0;
80 clip.dstX1 = dstX1;
81 clip.dstY1 = dstY1;
82
83 /* NOTE: If the src and dst dimensions don't match, we cannot simply adjust
84 * the integer coordinates to account for clipping (or scissors) because that
85 * would make us cut off fractional parts, affecting the result of the blit.
86 *
87 * XXX: This should depend on mask !
88 */
89 if (!_mesa_clip_blit(ctx, readFB, drawFB,
90 &clip.srcX0, &clip.srcY0, &clip.srcX1, &clip.srcY1,
91 &clip.dstX0, &clip.dstY0, &clip.dstX1, &clip.dstY1)) {
92 return; /* nothing to draw/blit */
93 }
94 memset(&blit, 0, sizeof(struct pipe_blit_info));
95 blit.scissor_enable =
96 (dstX0 != clip.dstX0) ||
97 (dstY0 != clip.dstY0) ||
98 (dstX1 != clip.dstX1) ||
99 (dstY1 != clip.dstY1);
100
101 if (st_fb_orientation(drawFB) == Y_0_TOP) {
102 /* invert Y for dest */
103 dstY0 = drawFB->Height - dstY0;
104 dstY1 = drawFB->Height - dstY1;
105 /* invert Y for clip */
106 clip.dstY0 = drawFB->Height - clip.dstY0;
107 clip.dstY1 = drawFB->Height - clip.dstY1;
108 }
109 if (blit.scissor_enable) {
110 blit.scissor.minx = MIN2(clip.dstX0, clip.dstX1);
111 blit.scissor.miny = MIN2(clip.dstY0, clip.dstY1);
112 blit.scissor.maxx = MAX2(clip.dstX0, clip.dstX1);
113 blit.scissor.maxy = MAX2(clip.dstY0, clip.dstY1);
114 #if 0
115 debug_printf("scissor = (%i,%i)-(%i,%i)\n",
116 blit.scissor.minx,blit.scissor.miny,
117 blit.scissor.maxx,blit.scissor.maxy);
118 #endif
119 }
120
121 if (st_fb_orientation(readFB) == Y_0_TOP) {
122 /* invert Y for src */
123 srcY0 = readFB->Height - srcY0;
124 srcY1 = readFB->Height - srcY1;
125 }
126
127 if (srcY0 > srcY1 && dstY0 > dstY1) {
128 /* Both src and dst are upside down. Swap Y to make it
129 * right-side up to increase odds of using a fast path.
130 * Recall that all Gallium raster coords have Y=0=top.
131 */
132 GLint tmp;
133 tmp = srcY0;
134 srcY0 = srcY1;
135 srcY1 = tmp;
136 tmp = dstY0;
137 dstY0 = dstY1;
138 dstY1 = tmp;
139 }
140
141 blit.src.box.depth = 1;
142 blit.dst.box.depth = 1;
143
144 /* Destination dimensions have to be positive: */
145 if (dstX0 < dstX1) {
146 blit.dst.box.x = dstX0;
147 blit.src.box.x = srcX0;
148 blit.dst.box.width = dstX1 - dstX0;
149 blit.src.box.width = srcX1 - srcX0;
150 } else {
151 blit.dst.box.x = dstX1;
152 blit.src.box.x = srcX1;
153 blit.dst.box.width = dstX0 - dstX1;
154 blit.src.box.width = srcX0 - srcX1;
155 }
156 if (dstY0 < dstY1) {
157 blit.dst.box.y = dstY0;
158 blit.src.box.y = srcY0;
159 blit.dst.box.height = dstY1 - dstY0;
160 blit.src.box.height = srcY1 - srcY0;
161 } else {
162 blit.dst.box.y = dstY1;
163 blit.src.box.y = srcY1;
164 blit.dst.box.height = dstY0 - dstY1;
165 blit.src.box.height = srcY0 - srcY1;
166 }
167
168 if (drawFB != ctx->WinSysDrawBuffer)
169 st_window_rectangles_to_blit(ctx, &blit);
170
171 blit.filter = pFilter;
172 blit.render_condition_enable = TRUE;
173 blit.alpha_blend = FALSE;
174
175 if (mask & GL_COLOR_BUFFER_BIT) {
176 struct gl_renderbuffer_attachment *srcAtt =
177 &readFB->Attachment[readFB->_ColorReadBufferIndex];
178 GLuint i;
179
180 blit.mask = PIPE_MASK_RGBA;
181
182 if (srcAtt->Type == GL_TEXTURE) {
183 struct st_texture_object *srcObj = st_texture_object(srcAtt->Texture);
184
185 if (!srcObj || !srcObj->pt) {
186 return;
187 }
188
189 blit.src.resource = srcObj->pt;
190 blit.src.level = srcAtt->TextureLevel;
191 blit.src.box.z = srcAtt->Zoffset + srcAtt->CubeMapFace;
192 blit.src.format = srcObj->pt->format;
193
194 if (!ctx->Color.sRGBEnabled)
195 blit.src.format = util_format_linear(blit.src.format);
196 }
197 else {
198 struct st_renderbuffer *srcRb =
199 st_renderbuffer(readFB->_ColorReadBuffer);
200 struct pipe_surface *srcSurf;
201
202 if (!srcRb)
203 return;
204
205 st_update_renderbuffer_surface(st, srcRb);
206
207 if (!srcRb->surface)
208 return;
209
210 srcSurf = srcRb->surface;
211
212 blit.src.resource = srcSurf->texture;
213 blit.src.level = srcSurf->u.tex.level;
214 blit.src.box.z = srcSurf->u.tex.first_layer;
215 blit.src.format = srcSurf->format;
216 }
217
218 for (i = 0; i < drawFB->_NumColorDrawBuffers; i++) {
219 struct st_renderbuffer *dstRb =
220 st_renderbuffer(drawFB->_ColorDrawBuffers[i]);
221
222 if (dstRb) {
223 struct pipe_surface *dstSurf;
224
225 st_update_renderbuffer_surface(st, dstRb);
226
227 dstSurf = dstRb->surface;
228
229 if (dstSurf) {
230 blit.dst.resource = dstSurf->texture;
231 blit.dst.level = dstSurf->u.tex.level;
232 blit.dst.box.z = dstSurf->u.tex.first_layer;
233 blit.dst.format = dstSurf->format;
234
235 st->pipe->blit(st->pipe, &blit);
236 dstRb->defined = true; /* front buffer tracking */
237 }
238 }
239 }
240 }
241
242 if (mask & depthStencil) {
243 /* depth and/or stencil blit */
244
245 /* get src/dst depth surfaces */
246 struct st_renderbuffer *srcDepthRb =
247 st_renderbuffer(readFB->Attachment[BUFFER_DEPTH].Renderbuffer);
248 struct st_renderbuffer *dstDepthRb =
249 st_renderbuffer(drawFB->Attachment[BUFFER_DEPTH].Renderbuffer);
250 struct pipe_surface *dstDepthSurf =
251 dstDepthRb ? dstDepthRb->surface : NULL;
252
253 struct st_renderbuffer *srcStencilRb =
254 st_renderbuffer(readFB->Attachment[BUFFER_STENCIL].Renderbuffer);
255 struct st_renderbuffer *dstStencilRb =
256 st_renderbuffer(drawFB->Attachment[BUFFER_STENCIL].Renderbuffer);
257 struct pipe_surface *dstStencilSurf =
258 dstStencilRb ? dstStencilRb->surface : NULL;
259
260 if (_mesa_has_depthstencil_combined(readFB) &&
261 _mesa_has_depthstencil_combined(drawFB)) {
262 blit.mask = 0;
263 if (mask & GL_DEPTH_BUFFER_BIT)
264 blit.mask |= PIPE_MASK_Z;
265 if (mask & GL_STENCIL_BUFFER_BIT)
266 blit.mask |= PIPE_MASK_S;
267
268 blit.dst.resource = dstDepthSurf->texture;
269 blit.dst.level = dstDepthSurf->u.tex.level;
270 blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
271 blit.dst.format = dstDepthSurf->format;
272
273 blit.src.resource = srcDepthRb->texture;
274 blit.src.level = srcDepthRb->surface->u.tex.level;
275 blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
276 blit.src.format = srcDepthRb->surface->format;
277
278 st->pipe->blit(st->pipe, &blit);
279 }
280 else {
281 /* blitting depth and stencil separately */
282
283 if (mask & GL_DEPTH_BUFFER_BIT) {
284 blit.mask = PIPE_MASK_Z;
285
286 blit.dst.resource = dstDepthSurf->texture;
287 blit.dst.level = dstDepthSurf->u.tex.level;
288 blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
289 blit.dst.format = dstDepthSurf->format;
290
291 blit.src.resource = srcDepthRb->texture;
292 blit.src.level = srcDepthRb->surface->u.tex.level;
293 blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
294 blit.src.format = srcDepthRb->surface->format;
295
296 st->pipe->blit(st->pipe, &blit);
297 }
298
299 if (mask & GL_STENCIL_BUFFER_BIT) {
300 blit.mask = PIPE_MASK_S;
301
302 blit.dst.resource = dstStencilSurf->texture;
303 blit.dst.level = dstStencilSurf->u.tex.level;
304 blit.dst.box.z = dstStencilSurf->u.tex.first_layer;
305 blit.dst.format = dstStencilSurf->format;
306
307 blit.src.resource = srcStencilRb->texture;
308 blit.src.level = srcStencilRb->surface->u.tex.level;
309 blit.src.box.z = srcStencilRb->surface->u.tex.first_layer;
310 blit.src.format = srcStencilRb->surface->format;
311
312 st->pipe->blit(st->pipe, &blit);
313 }
314 }
315 }
316 }
317
318
319 void
st_init_blit_functions(struct dd_function_table * functions)320 st_init_blit_functions(struct dd_function_table *functions)
321 {
322 functions->BlitFramebuffer = st_BlitFramebuffer;
323 }
324