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Diffstat (limited to 'src/mesa/pipe/softpipe/sp_texture.c')
-rw-r--r--src/mesa/pipe/softpipe/sp_texture.c425
1 files changed, 425 insertions, 0 deletions
diff --git a/src/mesa/pipe/softpipe/sp_texture.c b/src/mesa/pipe/softpipe/sp_texture.c
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index 0000000000..2f9a1e9837
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+++ b/src/mesa/pipe/softpipe/sp_texture.c
@@ -0,0 +1,425 @@
+/**************************************************************************
+ *
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+ /*
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ * Michel Dänzer <michel@tungstengraphics.com>
+ */
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_util.h"
+#include "pipe/p_winsys.h"
+
+#include "sp_context.h"
+#include "sp_state.h"
+#include "sp_texture.h"
+
+
+/* At the moment, just make softpipe use the same layout for its
+ * textures as the i945. Softpipe needs some sort of texture layout,
+ * this one was handy. May be worthwhile to simplify this code a
+ * little.
+ */
+
+static unsigned minify( unsigned d )
+{
+ return MAX2(1, d>>1);
+}
+
+static int align(int value, int alignment)
+{
+ return (value + alignment - 1) & ~(alignment - 1);
+}
+
+
+static void
+sp_miptree_set_level_info(struct softpipe_texture *spt,
+ unsigned level,
+ unsigned nr_images,
+ unsigned x, unsigned y, unsigned w, unsigned h,
+ unsigned d)
+{
+ struct pipe_texture *pt = &spt->base;
+
+ assert(level < PIPE_MAX_TEXTURE_LEVELS);
+
+ pt->width[level] = w;
+ pt->height[level] = h;
+ pt->depth[level] = d;
+
+ spt->nr_images[level] = nr_images;
+ spt->level_offset[level] = (x + y * spt->pitch) * pt->cpp;
+
+ /*
+ DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
+ level, w, h, d, x, y, spt->level_offset[level]);
+ */
+
+ /* Not sure when this would happen, but anyway:
+ */
+ if (spt->image_offset[level]) {
+ FREE( spt->image_offset[level] );
+ spt->image_offset[level] = NULL;
+ }
+
+ assert(nr_images);
+ assert(!spt->image_offset[level]);
+
+ spt->image_offset[level] = (unsigned *) MALLOC( nr_images * sizeof(unsigned) );
+ spt->image_offset[level][0] = 0;
+}
+
+
+static void
+sp_miptree_set_image_offset(struct softpipe_texture *spt,
+ unsigned level, unsigned img, unsigned x, unsigned y)
+{
+ if (img == 0 && level == 0)
+ assert(x == 0 && y == 0);
+
+ assert(img < spt->nr_images[level]);
+
+ spt->image_offset[level][img] = (x + y * spt->pitch);
+
+ /*
+ DBG("%s level %d img %d pos %d,%d image_offset %x\n",
+ __FUNCTION__, level, img, x, y, spt->image_offset[level][img]);
+ */
+}
+
+
+static void
+sp_miptree_layout_2d( struct softpipe_texture *spt )
+{
+ struct pipe_texture *pt = &spt->base;
+ int align_h = 2, align_w = 4;
+ unsigned level;
+ unsigned x = 0;
+ unsigned y = 0;
+ unsigned width = pt->width[0];
+ unsigned height = pt->height[0];
+
+ spt->pitch = pt->width[0];
+ /* XXX FIX THIS:
+ * we use alignment=64 bytes in sp_region_alloc(). If we change
+ * that, change this too.
+ */
+ if (spt->pitch < 16)
+ spt->pitch = 16;
+
+ /* May need to adjust pitch to accomodate the placement of
+ * the 2nd mipmap. This occurs when the alignment
+ * constraints of mipmap placement push the right edge of the
+ * 2nd mipmap out past the width of its parent.
+ */
+ if (pt->first_level != pt->last_level) {
+ unsigned mip1_width = align(minify(pt->width[0]), align_w)
+ + minify(minify(pt->width[0]));
+
+ if (mip1_width > pt->width[0])
+ spt->pitch = mip1_width;
+ }
+
+ /* Pitch must be a whole number of dwords, even though we
+ * express it in texels.
+ */
+ spt->pitch = align(spt->pitch * pt->cpp, 4) / pt->cpp;
+ spt->total_height = 0;
+
+ for ( level = pt->first_level ; level <= pt->last_level ; level++ ) {
+ unsigned img_height;
+
+ sp_miptree_set_level_info(spt, level, 1, x, y, width, height, 1);
+
+ if (pt->compressed)
+ img_height = MAX2(1, height/4);
+ else
+ img_height = align(height, align_h);
+
+
+ /* Because the images are packed better, the final offset
+ * might not be the maximal one:
+ */
+ spt->total_height = MAX2(spt->total_height, y + img_height);
+
+ /* Layout_below: step right after second mipmap.
+ */
+ if (level == pt->first_level + 1) {
+ x += align(width, align_w);
+ }
+ else {
+ y += img_height;
+ }
+
+ width = minify(width);
+ height = minify(height);
+ }
+}
+
+
+static const int initial_offsets[6][2] = {
+ {0, 0},
+ {0, 2},
+ {1, 0},
+ {1, 2},
+ {1, 1},
+ {1, 3}
+};
+
+static const int step_offsets[6][2] = {
+ {0, 2},
+ {0, 2},
+ {-1, 2},
+ {-1, 2},
+ {-1, 1},
+ {-1, 1}
+};
+
+
+
+static boolean
+softpipe_mipmap_tree_layout(struct pipe_context *pipe, struct softpipe_texture * spt)
+{
+ struct pipe_texture *pt = &spt->base;
+ unsigned level;
+
+ switch (pt->target) {
+ case PIPE_TEXTURE_CUBE:{
+ const unsigned dim = pt->width[0];
+ unsigned face;
+ unsigned lvlWidth = pt->width[0], lvlHeight = pt->height[0];
+
+ assert(lvlWidth == lvlHeight); /* cubemap images are square */
+
+ /* Depending on the size of the largest images, pitch can be
+ * determined either by the old-style packing of cubemap faces,
+ * or the final row of 4x4, 2x2 and 1x1 faces below this.
+ */
+ if (dim > 32)
+ spt->pitch = ((dim * pt->cpp * 2 + 3) & ~3) / pt->cpp;
+ else
+ spt->pitch = 14 * 8;
+
+ spt->total_height = dim * 4 + 4;
+
+ /* Set all the levels to effectively occupy the whole rectangular region.
+ */
+ for (level = pt->first_level; level <= pt->last_level; level++) {
+ sp_miptree_set_level_info(spt, level, 6,
+ 0, 0,
+ lvlWidth, lvlHeight, 1);
+ lvlWidth /= 2;
+ lvlHeight /= 2;
+ }
+
+
+ for (face = 0; face < 6; face++) {
+ unsigned x = initial_offsets[face][0] * dim;
+ unsigned y = initial_offsets[face][1] * dim;
+ unsigned d = dim;
+
+ if (dim == 4 && face >= 4) {
+ y = spt->total_height - 4;
+ x = (face - 4) * 8;
+ }
+ else if (dim < 4 && (face > 0 || pt->first_level > 0)) {
+ y = spt->total_height - 4;
+ x = face * 8;
+ }
+
+ for (level = pt->first_level; level <= pt->last_level; level++) {
+ sp_miptree_set_image_offset(spt, level, face, x, y);
+
+ d >>= 1;
+
+ switch (d) {
+ case 4:
+ switch (face) {
+ case PIPE_TEX_FACE_POS_X:
+ case PIPE_TEX_FACE_NEG_X:
+ x += step_offsets[face][0] * d;
+ y += step_offsets[face][1] * d;
+ break;
+ case PIPE_TEX_FACE_POS_Y:
+ case PIPE_TEX_FACE_NEG_Y:
+ y += 12;
+ x -= 8;
+ break;
+ case PIPE_TEX_FACE_POS_Z:
+ case PIPE_TEX_FACE_NEG_Z:
+ y = spt->total_height - 4;
+ x = (face - 4) * 8;
+ break;
+ }
+
+ case 2:
+ y = spt->total_height - 4;
+ x = 16 + face * 8;
+ break;
+
+ case 1:
+ x += 48;
+ break;
+
+ default:
+ x += step_offsets[face][0] * d;
+ y += step_offsets[face][1] * d;
+ break;
+ }
+ }
+ }
+ break;
+ }
+ case PIPE_TEXTURE_3D:{
+ unsigned width = pt->width[0];
+ unsigned height = pt->height[0];
+ unsigned depth = pt->depth[0];
+ unsigned pack_x_pitch, pack_x_nr;
+ unsigned pack_y_pitch;
+ unsigned level;
+
+ spt->pitch = ((pt->width[0] * pt->cpp + 3) & ~3) / pt->cpp;
+ spt->total_height = 0;
+
+ pack_y_pitch = MAX2(pt->height[0], 2);
+ pack_x_pitch = spt->pitch;
+ pack_x_nr = 1;
+
+ for (level = pt->first_level; level <= pt->last_level; level++) {
+ unsigned nr_images = pt->target == PIPE_TEXTURE_3D ? depth : 6;
+ int x = 0;
+ int y = 0;
+ unsigned q, j;
+
+ sp_miptree_set_level_info(spt, level, nr_images,
+ 0, spt->total_height,
+ width, height, depth);
+
+ for (q = 0; q < nr_images;) {
+ for (j = 0; j < pack_x_nr && q < nr_images; j++, q++) {
+ sp_miptree_set_image_offset(spt, level, q, x, y);
+ x += pack_x_pitch;
+ }
+
+ x = 0;
+ y += pack_y_pitch;
+ }
+
+
+ spt->total_height += y;
+
+ if (pack_x_pitch > 4) {
+ pack_x_pitch >>= 1;
+ pack_x_nr <<= 1;
+ assert(pack_x_pitch * pack_x_nr <= spt->pitch);
+ }
+
+ if (pack_y_pitch > 2) {
+ pack_y_pitch >>= 1;
+ }
+
+ width = minify(width);
+ height = minify(height);
+ depth = minify(depth);
+ }
+ break;
+ }
+
+ case PIPE_TEXTURE_1D:
+ case PIPE_TEXTURE_2D:
+// case PIPE_TEXTURE_RECTANGLE:
+ sp_miptree_layout_2d(spt);
+ break;
+ default:
+ assert(0);
+ break;
+ }
+
+ /*
+ DBG("%s: %dx%dx%d - sz 0x%x\n", __FUNCTION__,
+ spt->pitch,
+ spt->total_height, pt->cpp, spt->pitch * spt->total_height * pt->cpp);
+ */
+
+ return TRUE;
+}
+
+void
+softpipe_texture_create(struct pipe_context *pipe, struct pipe_texture **pt)
+{
+ struct softpipe_texture *spt = REALLOC(*pt, sizeof(struct pipe_texture),
+ sizeof(struct softpipe_texture));
+
+ if (spt) {
+ memset(&spt->base + 1, 0,
+ sizeof(struct softpipe_texture) - sizeof(struct pipe_texture));
+
+ if (softpipe_mipmap_tree_layout(pipe, spt)) {
+ spt->region = pipe->winsys->region_alloc(pipe->winsys,
+ spt->pitch * (*pt)->cpp *
+ spt->total_height,
+ PIPE_SURFACE_FLAG_TEXTURE);
+ }
+
+ if (!spt->region) {
+ FREE(spt);
+ spt = NULL;
+ }
+ }
+
+ *pt = &spt->base;
+}
+
+void
+softpipe_texture_release(struct pipe_context *pipe, struct pipe_texture **pt)
+{
+ if (!*pt)
+ return;
+
+ /*
+ DBG("%s %p refcount will be %d\n",
+ __FUNCTION__, (void *) *pt, (*pt)->refcount - 1);
+ */
+ if (--(*pt)->refcount <= 0) {
+ struct softpipe_texture *spt = (struct softpipe_texture *)*pt;
+ uint i;
+
+ /*
+ DBG("%s deleting %p\n", __FUNCTION__, (void *) spt);
+ */
+
+ pipe->winsys->region_release(pipe->winsys, &spt->region);
+
+ for (i = 0; i < PIPE_MAX_TEXTURE_LEVELS; i++)
+ if (spt->image_offset[i])
+ free(spt->image_offset[i]);
+
+ free(spt);
+ }
+ *pt = NULL;
+}
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