st_texture.c revision da8412ec19ad00627ae9139dc02f46f344bbb6ac 
1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 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.
25 *
26 **************************************************************************/
27
28#include "st_context.h"
29#include "st_format.h"
30#include "st_texture.h"
31#include "st_cb_fbo.h"
32#include "st_inlines.h"
33#include "main/enums.h"
34#include "main/texfetch.h"
35#include "main/teximage.h"
36#include "main/texobj.h"
37
38#undef Elements  /* fix re-defined macro warning */
39
40#include "pipe/p_state.h"
41#include "pipe/p_context.h"
42#include "pipe/p_defines.h"
43#include "util/u_inlines.h"
44#include "util/u_format.h"
45#include "util/u_rect.h"
46#include "util/u_math.h"
47
48
49#define DBG if(0) printf
50
51#if 0
52static GLenum
53target_to_target(GLenum target)
54{
55   switch (target) {
56   case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
57   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
58   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
59   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
60   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
61   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
62      return GL_TEXTURE_CUBE_MAP_ARB;
63   default:
64      return target;
65   }
66}
67#endif
68
69
70/**
71 * Allocate a new pipe_resource object
72 * width0, height0, depth0 are the dimensions of the level 0 image
73 * (the highest resolution).  last_level indicates how many mipmap levels
74 * to allocate storage for.  For non-mipmapped textures, this will be zero.
75 */
76struct pipe_resource *
77st_texture_create(struct st_context *st,
78                  enum pipe_texture_target target,
79		  enum pipe_format format,
80		  GLuint last_level,
81		  GLuint width0,
82		  GLuint height0,
83		  GLuint depth0,
84                  GLuint bind )
85{
86   struct pipe_resource pt, *newtex;
87   struct pipe_screen *screen = st->pipe->screen;
88
89   assert(target <= PIPE_TEXTURE_CUBE);
90
91   DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
92       _mesa_lookup_enum_by_nr(target),
93       _mesa_lookup_enum_by_nr(format), last_level);
94
95   assert(format);
96   assert(screen->is_format_supported(screen, format, target,
97                                      PIPE_BIND_SAMPLER_VIEW, 0));
98
99   memset(&pt, 0, sizeof(pt));
100   pt.target = target;
101   pt.format = format;
102   pt.last_level = last_level;
103   pt.width0 = width0;
104   pt.height0 = height0;
105   pt.depth0 = depth0;
106   pt._usage = PIPE_USAGE_DEFAULT;
107   pt.bind = bind;
108   pt.flags = 0;
109
110   newtex = screen->resource_create(screen, &pt);
111
112   assert(!newtex || pipe_is_referenced(&newtex->reference));
113
114   return newtex;
115}
116
117
118/**
119 * Check if a texture image can be pulled into a unified mipmap texture.
120 */
121GLboolean
122st_texture_match_image(const struct pipe_resource *pt,
123                       const struct gl_texture_image *image,
124                       GLuint face, GLuint level)
125{
126   /* Images with borders are never pulled into mipmap textures.
127    */
128   if (image->Border)
129      return GL_FALSE;
130
131   /* Check if this image's format matches the established texture's format.
132    */
133   if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
134      return GL_FALSE;
135
136   /* Test if this image's size matches what's expected in the
137    * established texture.
138    */
139   if (image->Width != u_minify(pt->width0, level) ||
140       image->Height != u_minify(pt->height0, level) ||
141       image->Depth != u_minify(pt->depth0, level))
142      return GL_FALSE;
143
144   return GL_TRUE;
145}
146
147
148#if 000
149/* Although we use the image_offset[] array to store relative offsets
150 * to cube faces, Mesa doesn't know anything about this and expects
151 * each cube face to be treated as a separate image.
152 *
153 * These functions present that view to mesa:
154 */
155const GLuint *
156st_texture_depth_offsets(struct pipe_resource *pt, GLuint level)
157{
158   static const GLuint zero = 0;
159
160   if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
161      return &zero;
162   else
163      return pt->level[level].image_offset;
164}
165
166
167/**
168 * Return the offset to the given mipmap texture image within the
169 * texture memory buffer, in bytes.
170 */
171GLuint
172st_texture_image_offset(const struct pipe_resource * pt,
173                        GLuint face, GLuint level)
174{
175   if (pt->target == PIPE_TEXTURE_CUBE)
176      return (pt->level[level].level_offset +
177              pt->level[level].image_offset[face] * pt->cpp);
178   else
179      return pt->level[level].level_offset;
180}
181#endif
182
183
184/**
185 * Map a teximage in a mipmap texture.
186 * \param row_stride  returns row stride in bytes
187 * \param image_stride  returns image stride in bytes (for 3D textures).
188 * \return address of mapping
189 */
190GLubyte *
191st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
192		     GLuint zoffset, enum pipe_transfer_usage usage,
193                     GLuint x, GLuint y, GLuint w, GLuint h)
194{
195   struct pipe_context *pipe = st->pipe;
196   struct pipe_resource *pt = stImage->pt;
197
198   DBG("%s \n", __FUNCTION__);
199
200   stImage->transfer = st_no_flush_get_tex_transfer(st, pt, stImage->face,
201						    stImage->level, zoffset,
202						    usage, x, y, w, h);
203
204   if (stImage->transfer)
205      return pipe_transfer_map(pipe, stImage->transfer);
206   else
207      return NULL;
208}
209
210
211void
212st_texture_image_unmap(struct st_context *st,
213                       struct st_texture_image *stImage)
214{
215   struct pipe_context *pipe = st->pipe;
216
217   DBG("%s\n", __FUNCTION__);
218
219   pipe_transfer_unmap(pipe, stImage->transfer);
220
221   pipe->transfer_destroy(pipe, stImage->transfer);
222}
223
224
225
226/**
227 * Upload data to a rectangular sub-region.  Lots of choices how to do this:
228 *
229 * - memcpy by span to current destination
230 * - upload data as new buffer and blit
231 *
232 * Currently always memcpy.
233 */
234static void
235st_surface_data(struct pipe_context *pipe,
236		struct pipe_transfer *dst,
237		unsigned dstx, unsigned dsty,
238		const void *src, unsigned src_stride,
239		unsigned srcx, unsigned srcy, unsigned width, unsigned height)
240{
241   void *map = pipe_transfer_map(pipe, dst);
242
243   assert(dst->resource);
244   util_copy_rect(map,
245                  dst->resource->format,
246                  dst->stride,
247                  dstx, dsty,
248                  width, height,
249                  src, src_stride,
250                  srcx, srcy);
251
252   pipe_transfer_unmap(pipe, dst);
253}
254
255
256/* Upload data for a particular image.
257 */
258void
259st_texture_image_data(struct st_context *st,
260                      struct pipe_resource *dst,
261                      GLuint face,
262                      GLuint level,
263                      void *src,
264                      GLuint src_row_stride, GLuint src_image_stride)
265{
266   struct pipe_context *pipe = st->pipe;
267   GLuint depth = u_minify(dst->depth0, level);
268   GLuint i;
269   const GLubyte *srcUB = src;
270   struct pipe_transfer *dst_transfer;
271
272   DBG("%s\n", __FUNCTION__);
273
274   for (i = 0; i < depth; i++) {
275      dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
276						  PIPE_TRANSFER_WRITE, 0, 0,
277						  u_minify(dst->width0, level),
278                                                  u_minify(dst->height0, level));
279
280      st_surface_data(pipe, dst_transfer,
281		      0, 0,                             /* dstx, dsty */
282		      srcUB,
283		      src_row_stride,
284		      0, 0,                             /* source x, y */
285		      u_minify(dst->width0, level),
286                      u_minify(dst->height0, level));      /* width, height */
287
288      pipe->transfer_destroy(pipe, dst_transfer);
289
290      srcUB += src_image_stride;
291   }
292}
293
294
295/* Copy mipmap image between textures
296 */
297void
298st_texture_image_copy(struct pipe_context *pipe,
299                      struct pipe_resource *dst, GLuint dstLevel,
300                      struct pipe_resource *src,
301                      GLuint face)
302{
303   struct pipe_screen *screen = pipe->screen;
304   GLuint width = u_minify(dst->width0, dstLevel);
305   GLuint height = u_minify(dst->height0, dstLevel);
306   GLuint depth = u_minify(dst->depth0, dstLevel);
307   struct pipe_surface *src_surface;
308   struct pipe_surface *dst_surface;
309   GLuint i;
310
311   for (i = 0; i < depth; i++) {
312      GLuint srcLevel;
313
314      /* find src texture level of needed size */
315      for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
316         if (u_minify(src->width0, srcLevel) == width &&
317             u_minify(src->height0, srcLevel) == height) {
318            break;
319         }
320      }
321      assert(u_minify(src->width0, srcLevel) == width);
322      assert(u_minify(src->height0, srcLevel) == height);
323
324#if 0
325      {
326         src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
327                                               PIPE_BUFFER_USAGE_CPU_READ);
328         ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
329         map += src_surface->width * src_surface->height * 4 / 2;
330         printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
331                __FUNCTION__,
332                map[0], map[1], map[2], map[3],
333                src, srcLevel, dst, dstLevel);
334
335         screen->surface_unmap(screen, src_surface);
336         pipe_surface_reference(&src_surface, NULL);
337      }
338#endif
339
340      dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
341                                            PIPE_BIND_BLIT_DESTINATION);
342
343      src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
344                                            PIPE_BIND_BLIT_SOURCE);
345
346      pipe->surface_copy(pipe,
347                         dst_surface,
348                         0, 0, /* destX, Y */
349                         src_surface,
350                         0, 0, /* srcX, Y */
351                         width, height);
352
353      pipe_surface_reference(&src_surface, NULL);
354      pipe_surface_reference(&dst_surface, NULL);
355   }
356}
357
358
359void
360st_teximage_flush_before_map(struct st_context *st,
361			     struct pipe_resource *pt,
362			     unsigned int face,
363			     unsigned int level,
364			     enum pipe_transfer_usage usage)
365{
366   struct pipe_context *pipe = st->pipe;
367   unsigned referenced =
368      pipe->is_resource_referenced(pipe, pt, face, level);
369
370   if (referenced && ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
371		      (usage & PIPE_TRANSFER_WRITE)))
372      st->pipe->flush(st->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
373}
374