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path: root/src/gallium/drivers/softpipe/sp_texture.c
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Diffstat (limited to 'src/gallium/drivers/softpipe/sp_texture.c')
-rw-r--r--src/gallium/drivers/softpipe/sp_texture.c356
1 files changed, 356 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_texture.c b/src/gallium/drivers/softpipe/sp_texture.c
new file mode 100644
index 0000000000..3a737d6f72
--- /dev/null
+++ b/src/gallium/drivers/softpipe/sp_texture.c
@@ -0,0 +1,356 @@
+/**************************************************************************
+ *
+ * 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_inlines.h"
+#include "pipe/p_winsys.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "sp_context.h"
+#include "sp_state.h"
+#include "sp_texture.h"
+#include "sp_tile_cache.h"
+#include "sp_screen.h"
+
+
+/* Simple, maximally packed layout.
+ */
+
+static unsigned minify( unsigned d )
+{
+ return MAX2(1, d>>1);
+}
+
+
+/* Conventional allocation path for non-display textures:
+ */
+static boolean
+softpipe_texture_layout(struct pipe_screen *screen,
+ struct softpipe_texture * spt)
+{
+ struct pipe_winsys *ws = screen->winsys;
+ struct pipe_texture *pt = &spt->base;
+ unsigned level;
+ unsigned width = pt->width[0];
+ unsigned height = pt->height[0];
+ unsigned depth = pt->depth[0];
+
+ unsigned buffer_size = 0;
+
+ for (level = 0; level <= pt->last_level; level++) {
+ pt->width[level] = width;
+ pt->height[level] = height;
+ pt->depth[level] = depth;
+ pt->nblocksx[level] = pf_get_nblocksx(&pt->block, width);
+ pt->nblocksy[level] = pf_get_nblocksy(&pt->block, height);
+ spt->stride[level] = pt->nblocksx[level]*pt->block.size;
+
+ spt->level_offset[level] = buffer_size;
+
+ buffer_size += (pt->nblocksy[level] *
+ ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
+ spt->stride[level]);
+
+ width = minify(width);
+ height = minify(height);
+ depth = minify(depth);
+ }
+
+ spt->buffer = ws->buffer_create(ws, 32,
+ PIPE_BUFFER_USAGE_PIXEL,
+ buffer_size);
+
+ return spt->buffer != NULL;
+}
+
+
+
+/* Hack it up to use the old winsys->surface_alloc_storage()
+ * method for now:
+ */
+static boolean
+softpipe_displaytarget_layout(struct pipe_screen *screen,
+ struct softpipe_texture * spt)
+{
+ struct pipe_winsys *ws = screen->winsys;
+ struct pipe_surface surf;
+ unsigned flags = (PIPE_BUFFER_USAGE_CPU_READ |
+ PIPE_BUFFER_USAGE_CPU_WRITE |
+ PIPE_BUFFER_USAGE_GPU_READ |
+ PIPE_BUFFER_USAGE_GPU_WRITE);
+
+
+ memset(&surf, 0, sizeof(surf));
+
+ ws->surface_alloc_storage( ws,
+ &surf,
+ spt->base.width[0],
+ spt->base.height[0],
+ spt->base.format,
+ flags,
+ spt->base.tex_usage);
+
+ /* Now extract the goodies:
+ */
+ spt->base.nblocksx[0] = pf_get_nblocksx(&spt->base.block, spt->base.width[0]);
+ spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height[0]);
+ spt->stride[0] = surf.stride;
+ spt->buffer = surf.buffer;
+
+ return spt->buffer != NULL;
+}
+
+
+
+
+
+static struct pipe_texture *
+softpipe_texture_create(struct pipe_screen *screen,
+ const struct pipe_texture *templat)
+{
+ struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
+ if (!spt)
+ return NULL;
+
+ spt->base = *templat;
+ spt->base.refcount = 1;
+ spt->base.screen = screen;
+
+ if (spt->base.tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
+ if (!softpipe_displaytarget_layout(screen, spt))
+ goto fail;
+ }
+ else {
+ if (!softpipe_texture_layout(screen, spt))
+ goto fail;
+ }
+
+ assert(spt->base.refcount == 1);
+ return &spt->base;
+
+ fail:
+ FREE(spt);
+ return NULL;
+}
+
+
+static struct pipe_texture *
+softpipe_texture_blanket(struct pipe_screen * screen,
+ const struct pipe_texture *base,
+ const unsigned *stride,
+ struct pipe_buffer *buffer)
+{
+ struct softpipe_texture *spt;
+ assert(screen);
+
+ /* Only supports one type */
+ if (base->target != PIPE_TEXTURE_2D ||
+ base->last_level != 0 ||
+ base->depth[0] != 1) {
+ return NULL;
+ }
+
+ spt = CALLOC_STRUCT(softpipe_texture);
+ if (!spt)
+ return NULL;
+
+ spt->base = *base;
+ spt->base.refcount = 1;
+ spt->base.screen = screen;
+ spt->base.nblocksx[0] = pf_get_nblocksx(&spt->base.block, spt->base.width[0]);
+ spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height[0]);
+ spt->stride[0] = stride[0];
+
+ pipe_buffer_reference(screen->winsys, &spt->buffer, buffer);
+
+ return &spt->base;
+}
+
+
+static void
+softpipe_texture_release(struct pipe_screen *screen,
+ struct pipe_texture **pt)
+{
+ if (!*pt)
+ return;
+
+ if (--(*pt)->refcount <= 0) {
+ struct softpipe_texture *spt = softpipe_texture(*pt);
+
+ pipe_buffer_reference(screen->winsys, &spt->buffer, NULL);
+ FREE(spt);
+ }
+ *pt = NULL;
+}
+
+
+static struct pipe_surface *
+softpipe_get_tex_surface(struct pipe_screen *screen,
+ struct pipe_texture *pt,
+ unsigned face, unsigned level, unsigned zslice,
+ unsigned usage)
+{
+ struct pipe_winsys *ws = screen->winsys;
+ struct softpipe_texture *spt = softpipe_texture(pt);
+ struct pipe_surface *ps;
+
+ assert(level <= pt->last_level);
+
+ ps = ws->surface_alloc(ws);
+ if (ps) {
+ assert(ps->refcount);
+ assert(ps->winsys);
+ pipe_buffer_reference(ws, &ps->buffer, spt->buffer);
+ ps->format = pt->format;
+ ps->block = pt->block;
+ ps->width = pt->width[level];
+ ps->height = pt->height[level];
+ ps->nblocksx = pt->nblocksx[level];
+ ps->nblocksy = pt->nblocksy[level];
+ ps->stride = spt->stride[level];
+ ps->offset = spt->level_offset[level];
+ ps->usage = usage;
+
+ /* Because we are softpipe, anything that the state tracker
+ * thought was going to be done with the GPU will actually get
+ * done with the CPU. Let's adjust the flags to take that into
+ * account.
+ */
+ if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
+ /* GPU_WRITE means "render" and that can involve reads (blending) */
+ ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
+ }
+
+ if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
+ ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;
+
+ if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
+ PIPE_BUFFER_USAGE_GPU_WRITE)) {
+ /* Mark the surface as dirty. The tile cache will look for this. */
+ spt->modified = TRUE;
+ }
+
+ pipe_texture_reference(&ps->texture, pt);
+ ps->face = face;
+ ps->level = level;
+ ps->zslice = zslice;
+
+ if (pt->target == PIPE_TEXTURE_CUBE || pt->target == PIPE_TEXTURE_3D) {
+ ps->offset += ((pt->target == PIPE_TEXTURE_CUBE) ? face : zslice) *
+ ps->nblocksy *
+ ps->stride;
+ }
+ else {
+ assert(face == 0);
+ assert(zslice == 0);
+ }
+ }
+ return ps;
+}
+
+
+static void
+softpipe_tex_surface_release(struct pipe_screen *screen,
+ struct pipe_surface **s)
+{
+ /* Effectively do the texture_update work here - if texture images
+ * needed post-processing to put them into hardware layout, this is
+ * where it would happen. For softpipe, nothing to do.
+ */
+ assert ((*s)->texture);
+ pipe_texture_reference(&(*s)->texture, NULL);
+
+ screen->winsys->surface_release(screen->winsys, s);
+}
+
+
+static void *
+softpipe_surface_map( struct pipe_screen *screen,
+ struct pipe_surface *surface,
+ unsigned flags )
+{
+ ubyte *map;
+
+ if (flags & ~surface->usage) {
+ assert(0);
+ return NULL;
+ }
+
+ map = screen->winsys->buffer_map( screen->winsys, surface->buffer, flags );
+ if (map == NULL)
+ return NULL;
+
+ /* May want to different things here depending on read/write nature
+ * of the map:
+ */
+ if (surface->texture &&
+ (flags & PIPE_BUFFER_USAGE_CPU_WRITE))
+ {
+ /* Do something to notify sharing contexts of a texture change.
+ * In softpipe, that would mean flushing the texture cache.
+ */
+ softpipe_screen(screen)->timestamp++;
+ }
+
+ return map + surface->offset;
+}
+
+
+static void
+softpipe_surface_unmap(struct pipe_screen *screen,
+ struct pipe_surface *surface)
+{
+ screen->winsys->buffer_unmap( screen->winsys, surface->buffer );
+}
+
+
+void
+softpipe_init_texture_funcs(struct softpipe_context *sp)
+{
+}
+
+
+void
+softpipe_init_screen_texture_funcs(struct pipe_screen *screen)
+{
+ screen->texture_create = softpipe_texture_create;
+ screen->texture_blanket = softpipe_texture_blanket;
+ screen->texture_release = softpipe_texture_release;
+
+ screen->get_tex_surface = softpipe_get_tex_surface;
+ screen->tex_surface_release = softpipe_tex_surface_release;
+
+ screen->surface_map = softpipe_surface_map;
+ screen->surface_unmap = softpipe_surface_unmap;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 13:13:27 +0000