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_cb_texture.h"
43 #include "st_manager.h"
44 #include "st_scissor.h"
45 #include "st_util.h"
46
47 #include "util/format/u_format.h"
48
49 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)50 st_BlitFramebuffer(struct gl_context *ctx,
51 struct gl_framebuffer *readFB,
52 struct gl_framebuffer *drawFB,
53 GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
54 GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
55 GLbitfield mask, GLenum filter)
56 {
57 const GLbitfield depthStencil = (GL_DEPTH_BUFFER_BIT |
58 GL_STENCIL_BUFFER_BIT);
59 struct st_context *st = st_context(ctx);
60 const uint pFilter = ((filter == GL_NEAREST)
61 ? PIPE_TEX_FILTER_NEAREST
62 : PIPE_TEX_FILTER_LINEAR);
63 struct {
64 GLint srcX0, srcY0, srcX1, srcY1;
65 GLint dstX0, dstY0, dstX1, dstY1;
66 } clip;
67 struct pipe_blit_info blit;
68
69 st_manager_validate_framebuffers(st);
70
71 /* Make sure bitmap rendering has landed in the framebuffers */
72 st_flush_bitmap_cache(st);
73 st_invalidate_readpix_cache(st);
74
75 clip.srcX0 = srcX0;
76 clip.srcY0 = srcY0;
77 clip.srcX1 = srcX1;
78 clip.srcY1 = srcY1;
79 clip.dstX0 = dstX0;
80 clip.dstY0 = dstY0;
81 clip.dstX1 = dstX1;
82 clip.dstY1 = dstY1;
83
84 /* NOTE: If the src and dst dimensions don't match, we cannot simply adjust
85 * the integer coordinates to account for clipping (or scissors) because that
86 * would make us cut off fractional parts, affecting the result of the blit.
87 *
88 * XXX: This should depend on mask !
89 */
90 if (!_mesa_clip_blit(ctx, readFB, drawFB,
91 &clip.srcX0, &clip.srcY0, &clip.srcX1, &clip.srcY1,
92 &clip.dstX0, &clip.dstY0, &clip.dstX1, &clip.dstY1)) {
93 return; /* nothing to draw/blit */
94 }
95 memset(&blit, 0, sizeof(struct pipe_blit_info));
96 blit.scissor_enable =
97 (dstX0 != clip.dstX0) ||
98 (dstY0 != clip.dstY0) ||
99 (dstX1 != clip.dstX1) ||
100 (dstY1 != clip.dstY1);
101
102 if (st_fb_orientation(drawFB) == Y_0_TOP) {
103 /* invert Y for dest */
104 dstY0 = drawFB->Height - dstY0;
105 dstY1 = drawFB->Height - dstY1;
106 /* invert Y for clip */
107 clip.dstY0 = drawFB->Height - clip.dstY0;
108 clip.dstY1 = drawFB->Height - clip.dstY1;
109 }
110 if (blit.scissor_enable) {
111 blit.scissor.minx = MIN2(clip.dstX0, clip.dstX1);
112 blit.scissor.miny = MIN2(clip.dstY0, clip.dstY1);
113 blit.scissor.maxx = MAX2(clip.dstX0, clip.dstX1);
114 blit.scissor.maxy = MAX2(clip.dstY0, clip.dstY1);
115 #if 0
116 debug_printf("scissor = (%i,%i)-(%i,%i)\n",
117 blit.scissor.minx,blit.scissor.miny,
118 blit.scissor.maxx,blit.scissor.maxy);
119 #endif
120 }
121
122 if (st_fb_orientation(readFB) == Y_0_TOP) {
123 /* invert Y for src */
124 srcY0 = readFB->Height - srcY0;
125 srcY1 = readFB->Height - srcY1;
126 }
127
128 if (srcY0 > srcY1 && dstY0 > dstY1) {
129 /* Both src and dst are upside down. Swap Y to make it
130 * right-side up to increase odds of using a fast path.
131 * Recall that all Gallium raster coords have Y=0=top.
132 */
133 GLint tmp;
134 tmp = srcY0;
135 srcY0 = srcY1;
136 srcY1 = tmp;
137 tmp = dstY0;
138 dstY0 = dstY1;
139 dstY1 = tmp;
140 }
141
142 blit.src.box.depth = 1;
143 blit.dst.box.depth = 1;
144
145 /* Destination dimensions have to be positive: */
146 if (dstX0 < dstX1) {
147 blit.dst.box.x = dstX0;
148 blit.src.box.x = srcX0;
149 blit.dst.box.width = dstX1 - dstX0;
150 blit.src.box.width = srcX1 - srcX0;
151 } else {
152 blit.dst.box.x = dstX1;
153 blit.src.box.x = srcX1;
154 blit.dst.box.width = dstX0 - dstX1;
155 blit.src.box.width = srcX0 - srcX1;
156 }
157 if (dstY0 < dstY1) {
158 blit.dst.box.y = dstY0;
159 blit.src.box.y = srcY0;
160 blit.dst.box.height = dstY1 - dstY0;
161 blit.src.box.height = srcY1 - srcY0;
162 } else {
163 blit.dst.box.y = dstY1;
164 blit.src.box.y = srcY1;
165 blit.dst.box.height = dstY0 - dstY1;
166 blit.src.box.height = srcY0 - srcY1;
167 }
168
169 if (drawFB != ctx->WinSysDrawBuffer)
170 st_window_rectangles_to_blit(ctx, &blit);
171
172 blit.filter = pFilter;
173 blit.render_condition_enable = st->has_conditional_render;
174 blit.alpha_blend = FALSE;
175
176 if (mask & GL_COLOR_BUFFER_BIT) {
177 struct gl_renderbuffer_attachment *srcAtt =
178 &readFB->Attachment[readFB->_ColorReadBufferIndex];
179 GLuint i;
180
181 blit.mask = PIPE_MASK_RGBA;
182
183 if (srcAtt->Type == GL_TEXTURE) {
184 /* Make sure that the st_texture_object->pt is the current storage for
185 * our miplevel. The finalize would happen at some point anyway, might
186 * as well be now.
187 */
188 st_finalize_texture(ctx, st->pipe, srcAtt->Texture, srcAtt->CubeMapFace);
189
190 struct st_texture_object *srcObj = st_texture_object(srcAtt->Texture);
191
192 if (!srcObj || !srcObj->pt) {
193 return;
194 }
195
196 blit.src.resource = srcObj->pt;
197 blit.src.level = srcAtt->TextureLevel;
198 blit.src.box.z = srcAtt->Zoffset + srcAtt->CubeMapFace;
199 blit.src.format = srcObj->surface_based ? srcObj->surface_format : srcObj->pt->format;
200
201 if (!ctx->Color.sRGBEnabled)
202 blit.src.format = util_format_linear(blit.src.format);
203 }
204 else {
205 struct st_renderbuffer *srcRb =
206 st_renderbuffer(readFB->_ColorReadBuffer);
207 struct pipe_surface *srcSurf;
208
209 if (!srcRb)
210 return;
211
212 st_update_renderbuffer_surface(st, srcRb);
213
214 if (!srcRb->surface)
215 return;
216
217 srcSurf = srcRb->surface;
218
219 blit.src.resource = srcSurf->texture;
220 blit.src.level = srcSurf->u.tex.level;
221 blit.src.box.z = srcSurf->u.tex.first_layer;
222 blit.src.format = srcSurf->format;
223 }
224
225 for (i = 0; i < drawFB->_NumColorDrawBuffers; i++) {
226 struct st_renderbuffer *dstRb =
227 st_renderbuffer(drawFB->_ColorDrawBuffers[i]);
228
229 if (dstRb) {
230 struct pipe_surface *dstSurf;
231
232 st_update_renderbuffer_surface(st, dstRb);
233
234 dstSurf = dstRb->surface;
235
236 if (dstSurf) {
237 blit.dst.resource = dstSurf->texture;
238 blit.dst.level = dstSurf->u.tex.level;
239 blit.dst.box.z = dstSurf->u.tex.first_layer;
240 blit.dst.format = dstSurf->format;
241
242 st->pipe->blit(st->pipe, &blit);
243 dstRb->defined = true; /* front buffer tracking */
244 }
245 }
246 }
247 }
248
249 if (mask & depthStencil) {
250 /* depth and/or stencil blit */
251
252 /* get src/dst depth surfaces */
253 struct st_renderbuffer *srcDepthRb =
254 st_renderbuffer(readFB->Attachment[BUFFER_DEPTH].Renderbuffer);
255 struct st_renderbuffer *dstDepthRb =
256 st_renderbuffer(drawFB->Attachment[BUFFER_DEPTH].Renderbuffer);
257 struct pipe_surface *dstDepthSurf =
258 dstDepthRb ? dstDepthRb->surface : NULL;
259
260 struct st_renderbuffer *srcStencilRb =
261 st_renderbuffer(readFB->Attachment[BUFFER_STENCIL].Renderbuffer);
262 struct st_renderbuffer *dstStencilRb =
263 st_renderbuffer(drawFB->Attachment[BUFFER_STENCIL].Renderbuffer);
264 struct pipe_surface *dstStencilSurf =
265 dstStencilRb ? dstStencilRb->surface : NULL;
266
267 if (_mesa_has_depthstencil_combined(readFB) &&
268 _mesa_has_depthstencil_combined(drawFB)) {
269 blit.mask = 0;
270 if (mask & GL_DEPTH_BUFFER_BIT)
271 blit.mask |= PIPE_MASK_Z;
272 if (mask & GL_STENCIL_BUFFER_BIT)
273 blit.mask |= PIPE_MASK_S;
274
275 blit.dst.resource = dstDepthSurf->texture;
276 blit.dst.level = dstDepthSurf->u.tex.level;
277 blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
278 blit.dst.format = dstDepthSurf->format;
279
280 blit.src.resource = srcDepthRb->texture;
281 blit.src.level = srcDepthRb->surface->u.tex.level;
282 blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
283 blit.src.format = srcDepthRb->surface->format;
284
285 st->pipe->blit(st->pipe, &blit);
286 }
287 else {
288 /* blitting depth and stencil separately */
289
290 if (mask & GL_DEPTH_BUFFER_BIT) {
291 blit.mask = PIPE_MASK_Z;
292
293 blit.dst.resource = dstDepthSurf->texture;
294 blit.dst.level = dstDepthSurf->u.tex.level;
295 blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
296 blit.dst.format = dstDepthSurf->format;
297
298 blit.src.resource = srcDepthRb->texture;
299 blit.src.level = srcDepthRb->surface->u.tex.level;
300 blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
301 blit.src.format = srcDepthRb->surface->format;
302
303 st->pipe->blit(st->pipe, &blit);
304 }
305
306 if (mask & GL_STENCIL_BUFFER_BIT) {
307 blit.mask = PIPE_MASK_S;
308
309 blit.dst.resource = dstStencilSurf->texture;
310 blit.dst.level = dstStencilSurf->u.tex.level;
311 blit.dst.box.z = dstStencilSurf->u.tex.first_layer;
312 blit.dst.format = dstStencilSurf->format;
313
314 blit.src.resource = srcStencilRb->texture;
315 blit.src.level = srcStencilRb->surface->u.tex.level;
316 blit.src.box.z = srcStencilRb->surface->u.tex.first_layer;
317 blit.src.format = srcStencilRb->surface->format;
318
319 st->pipe->blit(st->pipe, &blit);
320 }
321 }
322 }
323 }
324
325
326 void
st_init_blit_functions(struct dd_function_table * functions)327 st_init_blit_functions(struct dd_function_table *functions)
328 {
329 functions->BlitFramebuffer = st_BlitFramebuffer;
330 }
331