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path: root/src/gallium/drivers/llvmpipe/lp_texture.c
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Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_texture.c')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_texture.c429
1 files changed, 429 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_texture.c b/src/gallium/drivers/llvmpipe/lp_texture.c
new file mode 100644
index 0000000000..724d437833
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_texture.c
@@ -0,0 +1,429 @@
+/**************************************************************************
+ *
+ * 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/internal/p_winsys_screen.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "lp_context.h"
+#include "lp_state.h"
+#include "lp_texture.h"
+#include "lp_tex_cache.h"
+#include "lp_screen.h"
+#include "lp_winsys.h"
+
+
+/* Simple, maximally packed layout.
+ */
+
+
+/* Conventional allocation path for non-display textures:
+ */
+static boolean
+llvmpipe_texture_layout(struct llvmpipe_screen *screen,
+ struct llvmpipe_texture * lpt)
+{
+ struct pipe_texture *pt = &lpt->base;
+ unsigned level;
+ unsigned width = pt->width[0];
+ unsigned height = pt->height[0];
+ unsigned depth = pt->depth[0];
+
+ unsigned buffer_size = 0;
+
+ pf_get_block(lpt->base.format, &lpt->base.block);
+
+ 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);
+ lpt->stride[level] = align(pt->nblocksx[level]*pt->block.size, 16);
+
+ lpt->level_offset[level] = buffer_size;
+
+ buffer_size += (pt->nblocksy[level] *
+ ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
+ lpt->stride[level]);
+
+ width = minify(width);
+ height = minify(height);
+ depth = minify(depth);
+ }
+
+ lpt->data = align_malloc(buffer_size, 16);
+
+ return lpt->data != NULL;
+}
+
+static boolean
+llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
+ struct llvmpipe_texture * lpt)
+{
+ struct llvmpipe_winsys *winsys = screen->winsys;
+
+ pf_get_block(lpt->base.format, &lpt->base.block);
+ lpt->base.nblocksx[0] = pf_get_nblocksx(&lpt->base.block, lpt->base.width[0]);
+ lpt->base.nblocksy[0] = pf_get_nblocksy(&lpt->base.block, lpt->base.height[0]);
+
+ lpt->dt = winsys->displaytarget_create(winsys,
+ lpt->base.format,
+ lpt->base.width[0],
+ lpt->base.height[0],
+ 16,
+ &lpt->stride[0] );
+
+ return lpt->dt != NULL;
+}
+
+
+
+
+
+static struct pipe_texture *
+llvmpipe_texture_create(struct pipe_screen *_screen,
+ const struct pipe_texture *templat)
+{
+ struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
+ struct llvmpipe_texture *lpt = CALLOC_STRUCT(llvmpipe_texture);
+ if (!lpt)
+ return NULL;
+
+ lpt->base = *templat;
+ pipe_reference_init(&lpt->base.reference, 1);
+ lpt->base.screen = &screen->base;
+
+ /* XXX: The xlib state tracker is brain-dead and will request
+ * PIPE_FORMAT_Z16_UNORM no matter how much we tell it we don't support it.
+ */
+ if(lpt->base.format == PIPE_FORMAT_Z16_UNORM)
+ lpt->base.format = PIPE_FORMAT_Z32_UNORM;
+
+ if (lpt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
+ PIPE_TEXTURE_USAGE_PRIMARY)) {
+ if (!llvmpipe_displaytarget_layout(screen, lpt))
+ goto fail;
+ }
+ else {
+ if (!llvmpipe_texture_layout(screen, lpt))
+ goto fail;
+ }
+
+ return &lpt->base;
+
+ fail:
+ FREE(lpt);
+ return NULL;
+}
+
+
+static struct pipe_texture *
+llvmpipe_texture_blanket(struct pipe_screen * screen,
+ const struct pipe_texture *base,
+ const unsigned *stride,
+ struct pipe_buffer *buffer)
+{
+ /* FIXME */
+#if 0
+ struct llvmpipe_texture *lpt;
+ assert(screen);
+
+ /* Only supports one type */
+ if (base->target != PIPE_TEXTURE_2D ||
+ base->last_level != 0 ||
+ base->depth[0] != 1) {
+ return NULL;
+ }
+
+ lpt = CALLOC_STRUCT(llvmpipe_texture);
+ if (!lpt)
+ return NULL;
+
+ lpt->base = *base;
+ pipe_reference_init(&lpt->base.reference, 1);
+ lpt->base.screen = screen;
+ lpt->base.nblocksx[0] = pf_get_nblocksx(&lpt->base.block, lpt->base.width[0]);
+ lpt->base.nblocksy[0] = pf_get_nblocksy(&lpt->base.block, lpt->base.height[0]);
+ lpt->stride[0] = stride[0];
+
+ pipe_buffer_reference(&lpt->buffer, buffer);
+
+ return &lpt->base;
+#else
+ return NULL;
+#endif
+}
+
+
+static void
+llvmpipe_texture_destroy(struct pipe_texture *pt)
+{
+ struct llvmpipe_screen *screen = llvmpipe_screen(pt->screen);
+ struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
+
+ if(lpt->dt) {
+ struct llvmpipe_winsys *winsys = screen->winsys;
+ winsys->displaytarget_destroy(winsys, lpt->dt);
+ }
+ else
+ align_free(lpt->data);
+
+ FREE(lpt);
+}
+
+
+static struct pipe_surface *
+llvmpipe_get_tex_surface(struct pipe_screen *screen,
+ struct pipe_texture *pt,
+ unsigned face, unsigned level, unsigned zslice,
+ unsigned usage)
+{
+ struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
+ struct pipe_surface *ps;
+
+ assert(level <= pt->last_level);
+
+ 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 = lpt->level_offset[level];
+ ps->usage = usage;
+
+ /* Because we are llvmpipe, 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. */
+ lpt->timestamp++;
+ llvmpipe_screen(screen)->timestamp++;
+ }
+
+ ps->face = face;
+ ps->level = level;
+ ps->zslice = zslice;
+
+ if (pt->target == PIPE_TEXTURE_CUBE) {
+ ps->offset += face * pt->nblocksy[level] * lpt->stride[level];
+ }
+ else if (pt->target == PIPE_TEXTURE_3D) {
+ ps->offset += zslice * pt->nblocksy[level] * lpt->stride[level];
+ }
+ else {
+ assert(face == 0);
+ assert(zslice == 0);
+ }
+ }
+ return ps;
+}
+
+
+static void
+llvmpipe_tex_surface_destroy(struct pipe_surface *surf)
+{
+ /* 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 llvmpipe, nothing to do.
+ */
+ assert(surf->texture);
+ pipe_texture_reference(&surf->texture, NULL);
+ FREE(surf);
+}
+
+
+static struct pipe_transfer *
+llvmpipe_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 llvmpipe_texture *lptex = llvmpipe_texture(texture);
+ struct llvmpipe_transfer *lpt;
+
+ assert(texture);
+ assert(level <= texture->last_level);
+
+ lpt = CALLOC_STRUCT(llvmpipe_transfer);
+ if (lpt) {
+ struct pipe_transfer *pt = &lpt->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 = lptex->stride[level];
+ pt->usage = usage;
+ pt->face = face;
+ pt->level = level;
+ pt->zslice = zslice;
+
+ lpt->offset = lptex->level_offset[level];
+
+ if (texture->target == PIPE_TEXTURE_CUBE) {
+ lpt->offset += face * pt->nblocksy * pt->stride;
+ }
+ else if (texture->target == PIPE_TEXTURE_3D) {
+ lpt->offset += zslice * pt->nblocksy * pt->stride;
+ }
+ else {
+ assert(face == 0);
+ assert(zslice == 0);
+ }
+ return pt;
+ }
+ return NULL;
+}
+
+
+static void
+llvmpipe_tex_transfer_destroy(struct pipe_transfer *transfer)
+{
+ /* 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 llvmpipe, nothing to do.
+ */
+ assert (transfer->texture);
+ pipe_texture_reference(&transfer->texture, NULL);
+ FREE(transfer);
+}
+
+
+static void *
+llvmpipe_transfer_map( struct pipe_screen *_screen,
+ struct pipe_transfer *transfer )
+{
+ struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
+ ubyte *map, *xfer_map;
+ struct llvmpipe_texture *lpt;
+
+ assert(transfer->texture);
+ lpt = llvmpipe_texture(transfer->texture);
+
+ if(lpt->dt) {
+ struct llvmpipe_winsys *winsys = screen->winsys;
+ unsigned flags = 0;
+
+ if (transfer->usage != PIPE_TRANSFER_READ) {
+ flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
+ }
+
+ if (transfer->usage != PIPE_TRANSFER_WRITE) {
+ flags |= PIPE_BUFFER_USAGE_CPU_READ;
+ }
+
+ map = winsys->displaytarget_map(winsys, lpt->dt, flags);
+ if (map == NULL)
+ return NULL;
+ }
+ else
+ map = lpt->data;
+
+ /* May want to different things here depending on read/write nature
+ * of the map:
+ */
+ if (transfer->texture && transfer->usage != PIPE_TRANSFER_READ)
+ {
+ /* Do something to notify sharing contexts of a texture change.
+ * In llvmpipe, that would mean flushing the texture cache.
+ */
+ screen->timestamp++;
+ }
+
+ xfer_map = map + llvmpipe_transfer(transfer)->offset +
+ transfer->y / transfer->block.height * transfer->stride +
+ transfer->x / transfer->block.width * transfer->block.size;
+ /*printf("map = %p xfer map = %p\n", map, xfer_map);*/
+ return xfer_map;
+}
+
+
+static void
+llvmpipe_transfer_unmap(struct pipe_screen *_screen,
+ struct pipe_transfer *transfer)
+{
+ struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
+ struct llvmpipe_texture *lpt;
+
+ assert(transfer->texture);
+ lpt = llvmpipe_texture(transfer->texture);
+
+ if(lpt->dt) {
+ struct llvmpipe_winsys *winsys = screen->winsys;
+ winsys->displaytarget_unmap(winsys, lpt->dt);
+ }
+}
+
+
+void
+llvmpipe_init_texture_funcs(struct llvmpipe_context *lp)
+{
+}
+
+
+void
+llvmpipe_init_screen_texture_funcs(struct pipe_screen *screen)
+{
+ screen->texture_create = llvmpipe_texture_create;
+ screen->texture_blanket = llvmpipe_texture_blanket;
+ screen->texture_destroy = llvmpipe_texture_destroy;
+
+ screen->get_tex_surface = llvmpipe_get_tex_surface;
+ screen->tex_surface_destroy = llvmpipe_tex_surface_destroy;
+
+ screen->get_tex_transfer = llvmpipe_get_tex_transfer;
+ screen->tex_transfer_destroy = llvmpipe_tex_transfer_destroy;
+ screen->transfer_map = llvmpipe_transfer_map;
+ screen->transfer_unmap = llvmpipe_transfer_unmap;
+}