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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.c497
1 files changed, 497 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..6a63a0e6ce
--- /dev/null
+++ b/src/gallium/drivers/cell/ppu/cell_texture.c
@@ -0,0 +1,497 @@
+/**************************************************************************
+ *
+ * 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/internal/p_winsys_screen.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "cell_context.h"
+#include "cell_state.h"
+#include "cell_texture.h"
+
+
+
+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 cell_texture *ct = CALLOC_STRUCT(cell_texture);
+ if (!ct)
+ return NULL;
+
+ ct->base = *templat;
+ pipe_reference_init(&ct->base.reference, 1);
+ ct->base.screen = screen;
+
+ cell_texture_layout(ct);
+
+ ct->buffer = screen->buffer_create(screen, 32, PIPE_BUFFER_USAGE_PIXEL,
+ ct->buffer_size);
+
+ if (!ct->buffer) {
+ FREE(ct);
+ return NULL;
+ }
+
+ return &ct->base;
+}
+
+
+static void
+cell_texture_destroy(struct pipe_texture *pt)
+{
+ struct cell_texture *ct = cell_texture(pt);
+
+ if (ct->mapped) {
+ pipe_buffer_unmap(ct->buffer->screen, ct->buffer);
+ ct->mapped = NULL;
+ }
+
+ pipe_buffer_reference(&ct->buffer, NULL);
+
+ FREE(ct);
+}
+
+
+
+/**
+ * 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);
+}
+
+
+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 cell_texture *ct = cell_texture(pt);
+ struct pipe_surface *ps;
+
+ ps = CALLOC_STRUCT(pipe_surface);
+ if (ps) {
+ pipe_reference_init(&ps->reference, 1);
+ pipe_texture_reference(&ps->texture, pt);
+ ps->format = pt->format;
+ ps->width = pt->width[level];
+ ps->height = pt->height[level];
+ ps->offset = ct->level_offset[level];
+ /* XXX may need to override usage flags (see sp_texture.c) */
+ ps->usage = usage;
+ ps->face = face;
+ ps->level = level;
+ ps->zslice = zslice;
+
+ if (pt->target == PIPE_TEXTURE_CUBE) {
+ ps->offset += face * pt->nblocksy[level] * ct->stride[level];
+ }
+ else if (pt->target == PIPE_TEXTURE_3D) {
+ ps->offset += zslice * pt->nblocksy[level] * ct->stride[level];
+ }
+ else {
+ assert(face == 0);
+ assert(zslice == 0);
+ }
+ }
+ return ps;
+}
+
+
+static void
+cell_tex_surface_destroy(struct pipe_surface *surf)
+{
+ pipe_texture_reference(&surf->texture, NULL);
+ FREE(surf);
+}
+
+
+/**
+ * Create new pipe_transfer object.
+ * This is used by the user to put tex data into a texture (and get it
+ * back out for glGetTexImage).
+ */
+static struct pipe_transfer *
+cell_get_tex_transfer(struct pipe_screen *screen,
+ struct pipe_texture *texture,
+ unsigned face, unsigned level, unsigned zslice,
+ enum pipe_transfer_usage usage,
+ unsigned x, unsigned y, unsigned w, unsigned h)
+{
+ struct cell_texture *ct = cell_texture(texture);
+ struct cell_transfer *ctrans;
+
+ assert(texture);
+ assert(level <= texture->last_level);
+
+ ctrans = CALLOC_STRUCT(cell_transfer);
+ if (ctrans) {
+ struct pipe_transfer *pt = &ctrans->base;
+ pipe_texture_reference(&pt->texture, texture);
+ pt->format = texture->format;
+ pt->block = texture->block;
+ pt->x = x;
+ pt->y = y;
+ pt->width = w;
+ pt->height = h;
+ pt->nblocksx = texture->nblocksx[level];
+ pt->nblocksy = texture->nblocksy[level];
+ pt->stride = ct->stride[level];
+ pt->usage = usage;
+ pt->face = face;
+ pt->level = level;
+ pt->zslice = zslice;
+
+ ctrans->offset = ct->level_offset[level];
+
+ if (texture->target == PIPE_TEXTURE_CUBE) {
+ ctrans->offset += face * pt->nblocksy * pt->stride;
+ }
+ else if (texture->target == PIPE_TEXTURE_3D) {
+ ctrans->offset += zslice * pt->nblocksy * pt->stride;
+ }
+ else {
+ assert(face == 0);
+ assert(zslice == 0);
+ }
+ return pt;
+ }
+ return NULL;
+}
+
+
+static void
+cell_tex_transfer_destroy(struct pipe_transfer *t)
+{
+ struct cell_transfer *transfer = cell_transfer(t);
+ /* 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 cell, nothing to do.
+ */
+ assert (transfer->base.texture);
+ pipe_texture_reference(&transfer->base.texture, NULL);
+ FREE(transfer);
+}
+
+
+/**
+ * Return pointer to texture image data in linear layout.
+ */
+static void *
+cell_transfer_map(struct pipe_screen *screen, struct pipe_transfer *transfer)
+{
+ struct cell_transfer *ctrans = cell_transfer(transfer);
+ struct pipe_texture *pt = transfer->texture;
+ struct cell_texture *ct = cell_texture(pt);
+ const uint level = ctrans->base.level;
+ const uint texWidth = pt->width[level];
+ const uint texHeight = pt->height[level];
+ const uint stride = ct->stride[level];
+ unsigned flags = 0x0;
+ unsigned size;
+
+ assert(transfer->texture);
+
+ if (transfer->usage != PIPE_TRANSFER_READ) {
+ flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
+ }
+
+ if (transfer->usage != PIPE_TRANSFER_WRITE) {
+ flags |= PIPE_BUFFER_USAGE_CPU_READ;
+ }
+
+ if (!ct->mapped) {
+ /* map now */
+ ct->mapped = pipe_buffer_map(screen, ct->buffer, flags);
+ }
+
+ /*
+ * Create a buffer of ordinary memory for the linear texture.
+ * This is the memory that the user will read/write.
+ */
+ size = pt->nblocksx[level] * pt->nblocksy[level] * pt->block.size;
+
+ ctrans->map = align_malloc(size, 16);
+ if (!ctrans->map)
+ return NULL; /* out of memory */
+
+ if (transfer->usage == PIPE_TRANSFER_READ ||
+ transfer->usage == PIPE_TRANSFER_READ_WRITE) {
+ /* need to untwiddle the texture to make a linear version */
+ const uint bpp = pf_get_size(ct->base.format);
+ if (bpp == 4) {
+ const uint *src = (uint *) (ct->mapped + ctrans->offset);
+ uint *dst = ctrans->map;
+ untwiddle_image_uint(texWidth, texHeight, TILE_SIZE,
+ dst, stride, src);
+ }
+ else {
+ // xxx fix
+ }
+ }
+
+ return ctrans->map;
+}
+
+
+/**
+ * Called when user is done reading/writing texture data.
+ * If new data was written, this is where we convert the linear data
+ * to tiled data.
+ */
+static void
+cell_transfer_unmap(struct pipe_screen *screen,
+ struct pipe_transfer *transfer)
+{
+ struct cell_transfer *ctrans = cell_transfer(transfer);
+ struct pipe_texture *pt = transfer->texture;
+ struct cell_texture *ct = cell_texture(pt);
+ const uint level = ctrans->base.level;
+ const uint texWidth = pt->width[level];
+ const uint texHeight = pt->height[level];
+ const uint stride = ct->stride[level];
+
+ if (!ct->mapped) {
+ /* map now */
+ ct->mapped = pipe_buffer_map(screen, ct->buffer,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ }
+
+ if (transfer->usage == PIPE_TRANSFER_WRITE ||
+ transfer->usage == PIPE_TRANSFER_READ_WRITE) {
+ /* The user wrote new texture data into the mapped buffer.
+ * We need to convert the new linear data into the twiddled/tiled format.
+ */
+ const uint bpp = pf_get_size(ct->base.format);
+ if (bpp == 4) {
+ const uint *src = ctrans->map;
+ uint *dst = (uint *) (ct->mapped + ctrans->offset);
+ twiddle_image_uint(texWidth, texHeight, TILE_SIZE, dst, stride, src);
+ }
+ else {
+ // xxx fix
+ }
+ }
+
+ align_free(ctrans->map);
+ ctrans->map = NULL;
+}
+
+
+void
+cell_init_screen_texture_funcs(struct pipe_screen *screen)
+{
+ screen->texture_create = cell_texture_create;
+ screen->texture_destroy = cell_texture_destroy;
+
+ screen->get_tex_surface = cell_get_tex_surface;
+ screen->tex_surface_destroy = cell_tex_surface_destroy;
+
+ screen->get_tex_transfer = cell_get_tex_transfer;
+ screen->tex_transfer_destroy = cell_tex_transfer_destroy;
+
+ screen->transfer_map = cell_transfer_map;
+ screen->transfer_unmap = cell_transfer_unmap;
+}
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