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Diffstat (limited to 'src/gallium/drivers/cell/ppu/cell_texture.c')
-rw-r--r--src/gallium/drivers/cell/ppu/cell_texture.c528
1 files changed, 528 insertions, 0 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_texture.c b/src/gallium/drivers/cell/ppu/cell_texture.c
new file mode 100644
index 0000000000..47cd9605c8
--- /dev/null
+++ b/src/gallium/drivers/cell/ppu/cell_texture.c
@@ -0,0 +1,528 @@
+/**************************************************************************
+ *
+ * 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>
+ * Brian Paul
+ */
+
+#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 "cell_context.h"
+#include "cell_state.h"
+#include "cell_texture.h"
+
+
+
+static unsigned
+minify(unsigned d)
+{
+ return MAX2(1, d>>1);
+}
+
+
+static void
+cell_texture_layout(struct cell_texture *ct)
+{
+ struct pipe_texture *pt = &ct->base;
+ unsigned level;
+ unsigned width = pt->width[0];
+ unsigned height = pt->height[0];
+ unsigned depth = pt->depth[0];
+
+ ct->buffer_size = 0;
+
+ for ( level = 0 ; level <= pt->last_level ; level++ ) {
+ unsigned size;
+ unsigned w_tile, h_tile;
+
+ assert(level < CELL_MAX_TEXTURE_LEVELS);
+
+ /* width, height, rounded up to tile size */
+ w_tile = align(width, TILE_SIZE);
+ h_tile = align(height, TILE_SIZE);
+
+ pt->width[level] = width;
+ pt->height[level] = height;
+ pt->depth[level] = depth;
+ pt->nblocksx[level] = pf_get_nblocksx(&pt->block, w_tile);
+ pt->nblocksy[level] = pf_get_nblocksy(&pt->block, h_tile);
+
+ ct->stride[level] = pt->nblocksx[level] * pt->block.size;
+
+ ct->level_offset[level] = ct->buffer_size;
+
+ size = pt->nblocksx[level] * pt->nblocksy[level] * pt->block.size;
+ if (pt->target == PIPE_TEXTURE_CUBE)
+ size *= 6;
+ else
+ size *= depth;
+
+ ct->buffer_size += size;
+
+ width = minify(width);
+ height = minify(height);
+ depth = minify(depth);
+ }
+}
+
+
+static struct pipe_texture *
+cell_texture_create(struct pipe_screen *screen,
+ const struct pipe_texture *templat)
+{
+ struct pipe_winsys *ws = screen->winsys;
+ struct cell_texture *ct = CALLOC_STRUCT(cell_texture);
+ if (!ct)
+ return NULL;
+
+ ct->base = *templat;
+ ct->base.refcount = 1;
+ ct->base.screen = screen;
+
+ cell_texture_layout(ct);
+
+ ct->buffer = ws->buffer_create(ws, 32, PIPE_BUFFER_USAGE_PIXEL,
+ ct->buffer_size);
+
+ if (!ct->buffer) {
+ FREE(ct);
+ return NULL;
+ }
+
+ return &ct->base;
+}
+
+
+static void
+cell_texture_release(struct pipe_screen *screen,
+ 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) {
+ /* Delete this texture now.
+ * But note that the underlying pipe_buffer may linger...
+ */
+ struct cell_texture *ct = cell_texture(*pt);
+ uint i;
+
+ /*
+ DBG("%s deleting %p\n", __FUNCTION__, (void *) ct);
+ */
+
+ pipe_buffer_reference(screen, &ct->buffer, NULL);
+
+ for (i = 0; i < CELL_MAX_TEXTURE_LEVELS; i++) {
+ /* Unreference the tiled image buffer.
+ * It may not actually be deleted until a fence is hit.
+ */
+ if (ct->tiled_buffer[i]) {
+ ct->tiled_mapped[i] = NULL;
+ winsys_buffer_reference(screen->winsys, &ct->tiled_buffer[i], NULL);
+ }
+ }
+
+ FREE(ct);
+ }
+ *pt = NULL;
+}
+
+
+
+/**
+ * Convert image from linear layout to tiled layout. 4-byte pixels.
+ */
+static void
+twiddle_image_uint(uint w, uint h, uint tile_size, uint *dst,
+ uint src_stride, const uint *src)
+{
+ const uint tile_size2 = tile_size * tile_size;
+ const uint h_t = (h + tile_size - 1) / tile_size;
+ const uint w_t = (w + tile_size - 1) / tile_size;
+
+ uint it, jt; /* tile counters */
+ uint i, j; /* intra-tile counters */
+
+ src_stride /= 4; /* convert from bytes to pixels */
+
+ /* loop over dest tiles */
+ for (it = 0; it < h_t; it++) {
+ for (jt = 0; jt < w_t; jt++) {
+ /* start of dest tile: */
+ uint *tdst = dst + (it * w_t + jt) * tile_size2;
+
+ /* compute size of this tile (may be smaller than tile_size) */
+ /* XXX note: a compiler bug was found here. That's why the code
+ * looks as it does.
+ */
+ uint tile_width = w - jt * tile_size;
+ tile_width = MIN2(tile_width, tile_size);
+ uint tile_height = h - it * tile_size;
+ tile_height = MIN2(tile_height, tile_size);
+
+ /* loop over texels in the tile */
+ for (i = 0; i < tile_height; i++) {
+ for (j = 0; j < tile_width; j++) {
+ const uint srci = it * tile_size + i;
+ const uint srcj = jt * tile_size + j;
+ ASSERT(srci < h);
+ ASSERT(srcj < w);
+ tdst[i * tile_size + j] = src[srci * src_stride + srcj];
+ }
+ }
+ }
+ }
+}
+
+
+/**
+ * For Cell. Basically, rearrange the pixels/quads from this layout:
+ * +--+--+--+--+
+ * |p0|p1|p2|p3|....
+ * +--+--+--+--+
+ *
+ * to this layout:
+ * +--+--+
+ * |p0|p1|....
+ * +--+--+
+ * |p2|p3|
+ * +--+--+
+ */
+static void
+twiddle_tile(const uint *tileIn, uint *tileOut)
+{
+ int y, x;
+
+ for (y = 0; y < TILE_SIZE; y+=2) {
+ for (x = 0; x < TILE_SIZE; x+=2) {
+ int k = 4 * (y/2 * TILE_SIZE/2 + x/2);
+ tileOut[y * TILE_SIZE + (x + 0)] = tileIn[k];
+ tileOut[y * TILE_SIZE + (x + 1)] = tileIn[k+1];
+ tileOut[(y + 1) * TILE_SIZE + (x + 0)] = tileIn[k+2];
+ tileOut[(y + 1) * TILE_SIZE + (x + 1)] = tileIn[k+3];
+ }
+ }
+}
+
+
+/**
+ * Convert image from tiled layout to linear layout. 4-byte pixels.
+ */
+static void
+untwiddle_image_uint(uint w, uint h, uint tile_size, uint *dst,
+ uint dst_stride, const uint *src)
+{
+ const uint tile_size2 = tile_size * tile_size;
+ const uint h_t = (h + tile_size - 1) / tile_size;
+ const uint w_t = (w + tile_size - 1) / tile_size;
+ uint *tile_buf;
+ uint it, jt; /* tile counters */
+ uint i, j; /* intra-tile counters */
+
+ dst_stride /= 4; /* convert from bytes to pixels */
+
+ tile_buf = align_malloc(tile_size * tile_size * 4, 16);
+
+ /* loop over src tiles */
+ for (it = 0; it < h_t; it++) {
+ for (jt = 0; jt < w_t; jt++) {
+ /* start of src tile: */
+ const uint *tsrc = src + (it * w_t + jt) * tile_size2;
+
+ twiddle_tile(tsrc, tile_buf);
+ tsrc = tile_buf;
+
+ /* compute size of this tile (may be smaller than tile_size) */
+ /* XXX note: a compiler bug was found here. That's why the code
+ * looks as it does.
+ */
+ uint tile_width = w - jt * tile_size;
+ tile_width = MIN2(tile_width, tile_size);
+ uint tile_height = h - it * tile_size;
+ tile_height = MIN2(tile_height, tile_size);
+
+ /* loop over texels in the tile */
+ for (i = 0; i < tile_height; i++) {
+ for (j = 0; j < tile_width; j++) {
+ uint dsti = it * tile_size + i;
+ uint dstj = jt * tile_size + j;
+ ASSERT(dsti < h);
+ ASSERT(dstj < w);
+ dst[dsti * dst_stride + dstj] = tsrc[i * tile_size + j];
+ }
+ }
+ }
+ }
+
+ align_free(tile_buf);
+}
+
+
+/**
+ * Convert linear texture image data to tiled format for SPU usage.
+ */
+static void
+cell_twiddle_texture(struct pipe_screen *screen,
+ struct pipe_surface *surface)
+{
+ struct cell_texture *ct = cell_texture(surface->texture);
+ const uint level = surface->level;
+ const uint texWidth = ct->base.width[level];
+ const uint texHeight = ct->base.height[level];
+ const uint bufWidth = align(texWidth, TILE_SIZE);
+ const uint bufHeight = align(texHeight, TILE_SIZE);
+ const void *map = pipe_buffer_map(screen, surface->buffer,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ const uint *src = (const uint *) ((const ubyte *) map + surface->offset);
+
+ switch (ct->base.format) {
+ case PIPE_FORMAT_A8R8G8B8_UNORM:
+ case PIPE_FORMAT_B8G8R8A8_UNORM:
+ case PIPE_FORMAT_S8Z24_UNORM:
+ {
+ int numFaces = ct->base.target == PIPE_TEXTURE_CUBE ? 6 : 1;
+ int offset = bufWidth * bufHeight * 4 * surface->face;
+ uint *dst;
+
+ if (!ct->tiled_buffer[level]) {
+ /* allocate buffer for tiled data now */
+ struct pipe_winsys *ws = screen->winsys;
+ uint bytes = bufWidth * bufHeight * 4 * numFaces;
+ ct->tiled_buffer[level] = ws->buffer_create(ws, 16,
+ PIPE_BUFFER_USAGE_PIXEL,
+ bytes);
+ /* and map it */
+ ct->tiled_mapped[level] = ws->buffer_map(ws, ct->tiled_buffer[level],
+ PIPE_BUFFER_USAGE_GPU_READ);
+ }
+ dst = (uint *) ((ubyte *) ct->tiled_mapped[level] + offset);
+
+ twiddle_image_uint(texWidth, texHeight, TILE_SIZE, dst,
+ surface->stride, src);
+ }
+ break;
+ default:
+ printf("Cell: twiddle unsupported texture format 0x%x\n", ct->base.format);
+ ;
+ }
+
+ pipe_buffer_unmap(screen, surface->buffer);
+}
+
+
+/**
+ * Convert SPU tiled texture image data to linear format for app usage.
+ */
+static void
+cell_untwiddle_texture(struct pipe_screen *screen,
+ struct pipe_surface *surface)
+{
+ struct cell_texture *ct = cell_texture(surface->texture);
+ const uint level = surface->level;
+ const uint texWidth = ct->base.width[level];
+ const uint texHeight = ct->base.height[level];
+ const void *map = pipe_buffer_map(screen, surface->buffer,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ const uint *src = (const uint *) ((const ubyte *) map + surface->offset);
+
+ switch (ct->base.format) {
+ case PIPE_FORMAT_A8R8G8B8_UNORM:
+ case PIPE_FORMAT_B8G8R8A8_UNORM:
+ case PIPE_FORMAT_S8Z24_UNORM:
+ {
+ int numFaces = ct->base.target == PIPE_TEXTURE_CUBE ? 6 : 1;
+ int offset = surface->stride * texHeight * 4 * surface->face;
+ uint *dst;
+
+ if (!ct->untiled_data[level]) {
+ ct->untiled_data[level] =
+ align_malloc(surface->stride * texHeight * 4 * numFaces, 16);
+ }
+
+ dst = (uint *) ((ubyte *) ct->untiled_data[level] + offset);
+
+ untwiddle_image_uint(texWidth, texHeight, TILE_SIZE, dst,
+ surface->stride, src);
+ }
+ break;
+ default:
+ {
+ ct->untiled_data[level] = NULL;
+ printf("Cell: untwiddle unsupported texture format 0x%x\n", ct->base.format);
+ }
+ }
+
+ pipe_buffer_unmap(screen, surface->buffer);
+}
+
+
+static struct pipe_surface *
+cell_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 cell_texture *ct = cell_texture(pt);
+ struct pipe_surface *ps;
+
+ ps = ws->surface_alloc(ws);
+ if (ps) {
+ assert(ps->refcount);
+ assert(ps->winsys);
+ winsys_buffer_reference(ws, &ps->buffer, ct->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 = ct->stride[level];
+ ps->offset = ct->level_offset[level];
+ ps->usage = usage;
+
+ /* XXX may need to override usage flags (see sp_texture.c) */
+
+ 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);
+ }
+
+ if (ps->usage & PIPE_BUFFER_USAGE_CPU_READ) {
+ /* convert from tiled to linear layout */
+ cell_untwiddle_texture(screen, ps);
+ }
+ }
+ return ps;
+}
+
+
+static void
+cell_tex_surface_release(struct pipe_screen *screen,
+ struct pipe_surface **s)
+{
+ struct cell_texture *ct = cell_texture((*s)->texture);
+ const uint level = (*s)->level;
+
+ if (((*s)->usage & PIPE_BUFFER_USAGE_CPU_READ) && (ct->untiled_data[level]))
+ {
+ align_free(ct->untiled_data[level]);
+ ct->untiled_data[level] = NULL;
+ }
+
+ /* XXX if done rendering to teximage, re-tile */
+
+ pipe_texture_reference(&(*s)->texture, NULL);
+
+ screen->winsys->surface_release(screen->winsys, s);
+}
+
+
+static void *
+cell_surface_map(struct pipe_screen *screen,
+ struct pipe_surface *surface,
+ unsigned flags)
+{
+ ubyte *map;
+ struct cell_texture *ct = cell_texture(surface->texture);
+ const uint level = surface->level;
+
+ assert(ct);
+
+ if (flags & ~surface->usage) {
+ assert(0);
+ return NULL;
+ }
+
+ map = pipe_buffer_map( screen, surface->buffer, flags );
+ if (map == NULL)
+ return NULL;
+ else
+ {
+ if ((surface->usage & PIPE_BUFFER_USAGE_CPU_READ) && (ct->untiled_data[level])) {
+ return (void *) ((ubyte *) ct->untiled_data[level] + surface->offset);
+ }
+ else {
+ return (void *) (map + surface->offset);
+ }
+ }
+}
+
+
+static void
+cell_surface_unmap(struct pipe_screen *screen,
+ struct pipe_surface *surface)
+{
+ struct cell_texture *ct = cell_texture(surface->texture);
+
+ assert(ct);
+
+ if ((ct->base.tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) &&
+ (surface->usage & PIPE_BUFFER_USAGE_CPU_WRITE)) {
+ /* convert from linear to tiled layout */
+ cell_twiddle_texture(screen, surface);
+ }
+
+ pipe_buffer_unmap( screen, surface->buffer );
+}
+
+
+
+void
+cell_init_screen_texture_funcs(struct pipe_screen *screen)
+{
+ screen->texture_create = cell_texture_create;
+ screen->texture_release = cell_texture_release;
+
+ screen->get_tex_surface = cell_get_tex_surface;
+ screen->tex_surface_release = cell_tex_surface_release;
+
+ screen->surface_map = cell_surface_map;
+ screen->surface_unmap = cell_surface_unmap;
+}
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