summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/i915/i915_texture.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/drivers/i915/i915_texture.c')
-rw-r--r--src/gallium/drivers/i915/i915_texture.c930
1 files changed, 0 insertions, 930 deletions
diff --git a/src/gallium/drivers/i915/i915_texture.c b/src/gallium/drivers/i915/i915_texture.c
deleted file mode 100644
index 7ba222c78b..0000000000
--- a/src/gallium/drivers/i915/i915_texture.c
+++ /dev/null
@@ -1,930 +0,0 @@
-/**************************************************************************
- *
- * 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_state.h"
-#include "pipe/p_context.h"
-#include "pipe/p_defines.h"
-#include "util/u_inlines.h"
-#include "util/u_format.h"
-#include "util/u_math.h"
-#include "util/u_memory.h"
-
-#include "i915_context.h"
-#include "i915_texture.h"
-#include "i915_screen.h"
-#include "intel_winsys.h"
-
-
-/*
- * Helper function and arrays
- */
-
-
-/**
- * Initial offset for Cube map.
- */
-static const int initial_offsets[6][2] = {
- {0, 0},
- {0, 2},
- {1, 0},
- {1, 2},
- {1, 1},
- {1, 3}
-};
-
-/**
- * Step offsets for Cube map.
- */
-static const int step_offsets[6][2] = {
- {0, 2},
- {0, 2},
- {-1, 2},
- {-1, 2},
- {-1, 1},
- {-1, 1}
-};
-
-/* XXX really need twice the size if x is already pot?
- Otherwise just use util_next_power_of_two?
-*/
-static unsigned
-power_of_two(unsigned x)
-{
- unsigned value = 1;
- while (value < x)
- value = value << 1;
- return value;
-}
-
-/*
- * More advanced helper funcs
- */
-
-
-static void
-i915_miptree_set_level_info(struct i915_texture *tex,
- unsigned level,
- unsigned nr_images,
- unsigned w, unsigned h, unsigned d)
-{
- assert(level < PIPE_MAX_TEXTURE_LEVELS);
-
- tex->nr_images[level] = nr_images;
-
- /*
- DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
- level, w, h, d, x, y, tex->level_offset[level]);
- */
-
- /* Not sure when this would happen, but anyway:
- */
- if (tex->image_offset[level]) {
- FREE(tex->image_offset[level]);
- tex->image_offset[level] = NULL;
- }
-
- assert(nr_images);
- assert(!tex->image_offset[level]);
-
- tex->image_offset[level] = (unsigned *) MALLOC(nr_images * sizeof(unsigned));
- tex->image_offset[level][0] = 0;
-}
-
-static void
-i915_miptree_set_image_offset(struct i915_texture *tex,
- unsigned level, unsigned img, unsigned x, unsigned y)
-{
- if (img == 0 && level == 0)
- assert(x == 0 && y == 0);
-
- assert(img < tex->nr_images[level]);
-
- tex->image_offset[level][img] = y * tex->stride + x * util_format_get_blocksize(tex->base.format);
-
- /*
- printf("%s level %d img %d pos %d,%d image_offset %x\n",
- __FUNCTION__, level, img, x, y, tex->image_offset[level][img]);
- */
-}
-
-
-/*
- * i915 layout functions, some used by i945
- */
-
-
-/**
- * Special case to deal with scanout textures.
- */
-static boolean
-i915_scanout_layout(struct i915_texture *tex)
-{
- struct pipe_texture *pt = &tex->base;
-
- if (pt->last_level > 0 || util_format_get_blocksize(pt->format) != 4)
- return FALSE;
-
- i915_miptree_set_level_info(tex, 0, 1,
- pt->width0,
- pt->height0,
- 1);
- i915_miptree_set_image_offset(tex, 0, 0, 0, 0);
-
- if (pt->width0 >= 240) {
- tex->stride = power_of_two(util_format_get_stride(pt->format, pt->width0));
- tex->total_nblocksy = align(util_format_get_nblocksy(pt->format, pt->height0), 8);
- tex->hw_tiled = INTEL_TILE_X;
- } else if (pt->width0 == 64 && pt->height0 == 64) {
- tex->stride = power_of_two(util_format_get_stride(pt->format, pt->width0));
- tex->total_nblocksy = align(util_format_get_nblocksy(pt->format, pt->height0), 8);
- } else {
- return FALSE;
- }
-
- debug_printf("%s size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
- pt->width0, pt->height0, util_format_get_blocksize(pt->format),
- tex->stride, tex->total_nblocksy, tex->stride * tex->total_nblocksy);
-
- return TRUE;
-}
-
-/**
- * Special case to deal with shared textures.
- */
-static boolean
-i915_display_target_layout(struct i915_texture *tex)
-{
- struct pipe_texture *pt = &tex->base;
-
- if (pt->last_level > 0 || util_format_get_blocksize(pt->format) != 4)
- return FALSE;
-
- /* fallback to normal textures for small textures */
- if (pt->width0 < 240)
- return FALSE;
-
- i915_miptree_set_level_info(tex, 0, 1,
- pt->width0,
- pt->height0,
- 1);
- i915_miptree_set_image_offset(tex, 0, 0, 0, 0);
-
- tex->stride = power_of_two(util_format_get_stride(pt->format, pt->width0));
- tex->total_nblocksy = align(util_format_get_nblocksy(pt->format, pt->height0), 8);
- tex->hw_tiled = INTEL_TILE_X;
-
- debug_printf("%s size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
- pt->width0, pt->height0, util_format_get_blocksize(pt->format),
- tex->stride, tex->total_nblocksy, tex->stride * tex->total_nblocksy);
-
- return TRUE;
-}
-
-static void
-i915_miptree_layout_2d(struct i915_texture *tex)
-{
- struct pipe_texture *pt = &tex->base;
- unsigned level;
- unsigned width = pt->width0;
- unsigned height = pt->height0;
- unsigned nblocksy = util_format_get_nblocksy(pt->format, pt->width0);
-
- /* used for scanouts that need special layouts */
- if (pt->tex_usage & PIPE_TEXTURE_USAGE_PRIMARY)
- if (i915_scanout_layout(tex))
- return;
-
- /* for shared buffers we use something very like scanout */
- if (pt->tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET)
- if (i915_display_target_layout(tex))
- return;
-
- tex->stride = align(util_format_get_stride(pt->format, pt->width0), 4);
- tex->total_nblocksy = 0;
-
- for (level = 0; level <= pt->last_level; level++) {
- i915_miptree_set_level_info(tex, level, 1, width, height, 1);
- i915_miptree_set_image_offset(tex, level, 0, 0, tex->total_nblocksy);
-
- nblocksy = align(MAX2(2, nblocksy), 2);
-
- tex->total_nblocksy += nblocksy;
-
- width = u_minify(width, 1);
- height = u_minify(height, 1);
- nblocksy = util_format_get_nblocksy(pt->format, height);
- }
-}
-
-static void
-i915_miptree_layout_3d(struct i915_texture *tex)
-{
- struct pipe_texture *pt = &tex->base;
- unsigned level;
-
- unsigned width = pt->width0;
- unsigned height = pt->height0;
- unsigned depth = pt->depth0;
- unsigned nblocksy = util_format_get_nblocksy(pt->format, pt->height0);
- unsigned stack_nblocksy = 0;
-
- /* Calculate the size of a single slice.
- */
- tex->stride = align(util_format_get_stride(pt->format, pt->width0), 4);
-
- /* XXX: hardware expects/requires 9 levels at minimum.
- */
- for (level = 0; level <= MAX2(8, pt->last_level); level++) {
- i915_miptree_set_level_info(tex, level, depth, width, height, depth);
-
- stack_nblocksy += MAX2(2, nblocksy);
-
- width = u_minify(width, 1);
- height = u_minify(height, 1);
- nblocksy = util_format_get_nblocksy(pt->format, height);
- }
-
- /* Fixup depth image_offsets:
- */
- for (level = 0; level <= pt->last_level; level++) {
- unsigned i;
- for (i = 0; i < depth; i++)
- i915_miptree_set_image_offset(tex, level, i, 0, i * stack_nblocksy);
-
- depth = u_minify(depth, 1);
- }
-
- /* Multiply slice size by texture depth for total size. It's
- * remarkable how wasteful of memory the i915 texture layouts
- * are. They are largely fixed in the i945.
- */
- tex->total_nblocksy = stack_nblocksy * pt->depth0;
-}
-
-static void
-i915_miptree_layout_cube(struct i915_texture *tex)
-{
- struct pipe_texture *pt = &tex->base;
- unsigned width = pt->width0, height = pt->height0;
- const unsigned nblocks = util_format_get_nblocksx(pt->format, pt->width0);
- unsigned level;
- unsigned face;
-
- assert(width == height); /* cubemap images are square */
-
- /* double pitch for cube layouts */
- tex->stride = align(nblocks * util_format_get_blocksize(pt->format) * 2, 4);
- tex->total_nblocksy = nblocks * 4;
-
- for (level = 0; level <= pt->last_level; level++) {
- i915_miptree_set_level_info(tex, level, 6, width, height, 1);
- width /= 2;
- height /= 2;
- }
-
- for (face = 0; face < 6; face++) {
- unsigned x = initial_offsets[face][0] * nblocks;
- unsigned y = initial_offsets[face][1] * nblocks;
- unsigned d = nblocks;
-
- for (level = 0; level <= pt->last_level; level++) {
- i915_miptree_set_image_offset(tex, level, face, x, y);
- d >>= 1;
- x += step_offsets[face][0] * d;
- y += step_offsets[face][1] * d;
- }
- }
-}
-
-static boolean
-i915_miptree_layout(struct i915_texture * tex)
-{
- struct pipe_texture *pt = &tex->base;
-
- switch (pt->target) {
- case PIPE_TEXTURE_1D:
- case PIPE_TEXTURE_2D:
- i915_miptree_layout_2d(tex);
- break;
- case PIPE_TEXTURE_3D:
- i915_miptree_layout_3d(tex);
- break;
- case PIPE_TEXTURE_CUBE:
- i915_miptree_layout_cube(tex);
- break;
- default:
- assert(0);
- return FALSE;
- }
-
- return TRUE;
-}
-
-
-/*
- * i945 layout functions
- */
-
-
-static void
-i945_miptree_layout_2d(struct i915_texture *tex)
-{
- struct pipe_texture *pt = &tex->base;
- const int align_x = 2, align_y = 4;
- unsigned level;
- unsigned x = 0;
- unsigned y = 0;
- unsigned width = pt->width0;
- unsigned height = pt->height0;
- unsigned nblocksx = util_format_get_nblocksx(pt->format, pt->width0);
- unsigned nblocksy = util_format_get_nblocksy(pt->format, pt->height0);
-
- /* used for scanouts that need special layouts */
- if (tex->base.tex_usage & PIPE_TEXTURE_USAGE_PRIMARY)
- if (i915_scanout_layout(tex))
- return;
-
- /* for shared buffers we use some very like scanout */
- if (tex->base.tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET)
- if (i915_display_target_layout(tex))
- return;
-
- tex->stride = align(util_format_get_stride(pt->format, pt->width0), 4);
-
- /* May need to adjust pitch to accomodate the placement of
- * the 2nd mipmap level. This occurs when the alignment
- * constraints of mipmap placement push the right edge of the
- * 2nd mipmap level out past the width of its parent.
- */
- if (pt->last_level > 0) {
- unsigned mip1_nblocksx
- = align(util_format_get_nblocksx(pt->format, u_minify(width, 1)), align_x)
- + util_format_get_nblocksx(pt->format, u_minify(width, 2));
-
- if (mip1_nblocksx > nblocksx)
- tex->stride = mip1_nblocksx * util_format_get_blocksize(pt->format);
- }
-
- /* Pitch must be a whole number of dwords
- */
- tex->stride = align(tex->stride, 64);
- tex->total_nblocksy = 0;
-
- for (level = 0; level <= pt->last_level; level++) {
- i915_miptree_set_level_info(tex, level, 1, width, height, 1);
- i915_miptree_set_image_offset(tex, level, 0, x, y);
-
- nblocksy = align(nblocksy, align_y);
-
- /* Because the images are packed better, the final offset
- * might not be the maximal one:
- */
- tex->total_nblocksy = MAX2(tex->total_nblocksy, y + nblocksy);
-
- /* Layout_below: step right after second mipmap level.
- */
- if (level == 1) {
- x += align(nblocksx, align_x);
- }
- else {
- y += nblocksy;
- }
-
- width = u_minify(width, 1);
- height = u_minify(height, 1);
- nblocksx = util_format_get_nblocksx(pt->format, width);
- nblocksy = util_format_get_nblocksy(pt->format, height);
- }
-}
-
-static void
-i945_miptree_layout_3d(struct i915_texture *tex)
-{
- struct pipe_texture *pt = &tex->base;
- unsigned width = pt->width0;
- unsigned height = pt->height0;
- unsigned depth = pt->depth0;
- unsigned nblocksy = util_format_get_nblocksy(pt->format, pt->width0);
- unsigned pack_x_pitch, pack_x_nr;
- unsigned pack_y_pitch;
- unsigned level;
-
- tex->stride = align(util_format_get_stride(pt->format, pt->width0), 4);
- tex->total_nblocksy = 0;
-
- pack_y_pitch = MAX2(nblocksy, 2);
- pack_x_pitch = tex->stride / util_format_get_blocksize(pt->format);
- pack_x_nr = 1;
-
- for (level = 0; level <= pt->last_level; level++) {
- int x = 0;
- int y = 0;
- unsigned q, j;
-
- i915_miptree_set_level_info(tex, level, depth, width, height, depth);
-
- for (q = 0; q < depth;) {
- for (j = 0; j < pack_x_nr && q < depth; j++, q++) {
- i915_miptree_set_image_offset(tex, level, q, x, y + tex->total_nblocksy);
- x += pack_x_pitch;
- }
-
- x = 0;
- y += pack_y_pitch;
- }
-
- tex->total_nblocksy += y;
-
- if (pack_x_pitch > 4) {
- pack_x_pitch >>= 1;
- pack_x_nr <<= 1;
- assert(pack_x_pitch * pack_x_nr * util_format_get_blocksize(pt->format) <= tex->stride);
- }
-
- if (pack_y_pitch > 2) {
- pack_y_pitch >>= 1;
- }
-
- width = u_minify(width, 1);
- height = u_minify(height, 1);
- depth = u_minify(depth, 1);
- nblocksy = util_format_get_nblocksy(pt->format, height);
- }
-}
-
-static void
-i945_miptree_layout_cube(struct i915_texture *tex)
-{
- struct pipe_texture *pt = &tex->base;
- unsigned level;
-
- const unsigned nblocks = util_format_get_nblocksx(pt->format, pt->width0);
- unsigned face;
- unsigned width = pt->width0;
- unsigned height = pt->height0;
-
- /*
- printf("%s %i, %i\n", __FUNCTION__, pt->width0, pt->height0);
- */
-
- assert(width == height); /* cubemap images are square */
-
- /*
- * XXX Should only be used for compressed formats. But lets
- * keep this code active just in case.
- *
- * 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 (nblocks > 32)
- tex->stride = align(nblocks * util_format_get_blocksize(pt->format) * 2, 4);
- else
- tex->stride = 14 * 8 * util_format_get_blocksize(pt->format);
-
- tex->total_nblocksy = nblocks * 4;
-
- /* Set all the levels to effectively occupy the whole rectangular region.
- */
- for (level = 0; level <= pt->last_level; level++) {
- i915_miptree_set_level_info(tex, level, 6, width, height, 1);
- width /= 2;
- height /= 2;
- }
-
- for (face = 0; face < 6; face++) {
- unsigned x = initial_offsets[face][0] * nblocks;
- unsigned y = initial_offsets[face][1] * nblocks;
- unsigned d = nblocks;
-
-#if 0 /* Fix and enable this code for compressed formats */
- if (nblocks == 4 && face >= 4) {
- y = tex->total_height - 4;
- x = (face - 4) * 8;
- }
- else if (nblocks < 4 && (face > 0)) {
- y = tex->total_height - 4;
- x = face * 8;
- }
-#endif
-
- for (level = 0; level <= pt->last_level; level++) {
- i915_miptree_set_image_offset(tex, level, face, x, y);
-
- d >>= 1;
-
-#if 0 /* Fix and enable this code for compressed formats */
- 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 = tex->total_height - 4;
- x = (face - 4) * 8;
- break;
- }
- case 2:
- y = tex->total_height - 4;
- x = 16 + face * 8;
- break;
-
- case 1:
- x += 48;
- break;
- default:
-#endif
- x += step_offsets[face][0] * d;
- y += step_offsets[face][1] * d;
-#if 0
- break;
- }
-#endif
- }
- }
-}
-
-static boolean
-i945_miptree_layout(struct i915_texture * tex)
-{
- struct pipe_texture *pt = &tex->base;
-
- switch (pt->target) {
- case PIPE_TEXTURE_1D:
- case PIPE_TEXTURE_2D:
- i945_miptree_layout_2d(tex);
- break;
- case PIPE_TEXTURE_3D:
- i945_miptree_layout_3d(tex);
- break;
- case PIPE_TEXTURE_CUBE:
- i945_miptree_layout_cube(tex);
- break;
- default:
- assert(0);
- return FALSE;
- }
-
- return TRUE;
-}
-
-
-/*
- * Screen texture functions
- */
-
-
-static struct pipe_texture *
-i915_texture_create(struct pipe_screen *screen,
- const struct pipe_texture *templat)
-{
- struct i915_screen *is = i915_screen(screen);
- struct intel_winsys *iws = is->iws;
- struct i915_texture *tex = CALLOC_STRUCT(i915_texture);
- size_t tex_size;
- unsigned buf_usage = 0;
-
- if (!tex)
- return NULL;
-
- tex->base = *templat;
- pipe_reference_init(&tex->base.reference, 1);
- tex->base.screen = screen;
-
- if (is->is_i945) {
- if (!i945_miptree_layout(tex))
- goto fail;
- } else {
- if (!i915_miptree_layout(tex))
- goto fail;
- }
-
- tex_size = tex->stride * tex->total_nblocksy;
-
-
-
- /* for scanouts and cursors, cursors arn't scanouts */
- if (templat->tex_usage & PIPE_TEXTURE_USAGE_PRIMARY && templat->width0 != 64)
- buf_usage = INTEL_NEW_SCANOUT;
- else
- buf_usage = INTEL_NEW_TEXTURE;
-
- tex->buffer = iws->buffer_create(iws, tex_size, 64, buf_usage);
- if (!tex->buffer)
- goto fail;
-
- /* setup any hw fences */
- if (tex->hw_tiled) {
- assert(tex->sw_tiled == INTEL_TILE_NONE);
- iws->buffer_set_fence_reg(iws, tex->buffer, tex->stride, tex->hw_tiled);
- }
-
-
-#if 0
- void *ptr = ws->buffer_map(ws, tex->buffer,
- PIPE_BUFFER_USAGE_CPU_WRITE);
- memset(ptr, 0x80, tex_size);
- ws->buffer_unmap(ws, tex->buffer);
-#endif
-
- return &tex->base;
-
-fail:
- FREE(tex);
- return NULL;
-}
-
-static struct pipe_texture *
-i915_texture_blanket(struct pipe_screen * screen,
- const struct pipe_texture *base,
- const unsigned *stride,
- struct pipe_buffer *buffer)
-{
-#if 0
- struct i915_texture *tex;
- assert(screen);
-
- /* Only supports one type */
- if (base->target != PIPE_TEXTURE_2D ||
- base->last_level != 0 ||
- base->depth0 != 1) {
- return NULL;
- }
-
- tex = CALLOC_STRUCT(i915_texture);
- if (!tex)
- return NULL;
-
- tex->base = *base;
- pipe_reference_init(&tex->base.reference, 1);
- tex->base.screen = screen;
-
- tex->stride = stride[0];
-
- i915_miptree_set_level_info(tex, 0, 1, base->width0, base->height0, 1);
- i915_miptree_set_image_offset(tex, 0, 0, 0, 0);
-
- pipe_buffer_reference(&tex->buffer, buffer);
-
- return &tex->base;
-#else
- return NULL;
-#endif
-}
-
-static void
-i915_texture_destroy(struct pipe_texture *pt)
-{
- struct i915_texture *tex = (struct i915_texture *)pt;
- struct intel_winsys *iws = i915_screen(pt->screen)->iws;
- uint i;
-
- /*
- DBG("%s deleting %p\n", __FUNCTION__, (void *) tex);
- */
-
- iws->buffer_destroy(iws, tex->buffer);
-
- for (i = 0; i < PIPE_MAX_TEXTURE_LEVELS; i++)
- if (tex->image_offset[i])
- FREE(tex->image_offset[i]);
-
- FREE(tex);
-}
-
-
-/*
- * Screen surface functions
- */
-
-
-static struct pipe_surface *
-i915_get_tex_surface(struct pipe_screen *screen,
- struct pipe_texture *pt,
- unsigned face, unsigned level, unsigned zslice,
- unsigned flags)
-{
- struct i915_texture *tex = (struct i915_texture *)pt;
- struct pipe_surface *ps;
- unsigned offset; /* in bytes */
-
- if (pt->target == PIPE_TEXTURE_CUBE) {
- offset = tex->image_offset[level][face];
- }
- else if (pt->target == PIPE_TEXTURE_3D) {
- offset = tex->image_offset[level][zslice];
- }
- else {
- offset = tex->image_offset[level][0];
- assert(face == 0);
- assert(zslice == 0);
- }
-
- 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 = u_minify(pt->width0, level);
- ps->height = u_minify(pt->height0, level);
- ps->offset = offset;
- ps->usage = flags;
- }
- return ps;
-}
-
-static void
-i915_tex_surface_destroy(struct pipe_surface *surf)
-{
- pipe_texture_reference(&surf->texture, NULL);
- FREE(surf);
-}
-
-
-/*
- * Screen transfer functions
- */
-
-
-static struct pipe_transfer*
-i915_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 i915_texture *tex = (struct i915_texture *)texture;
- struct i915_transfer *trans;
- unsigned offset; /* in bytes */
-
- if (texture->target == PIPE_TEXTURE_CUBE) {
- offset = tex->image_offset[level][face];
- }
- else if (texture->target == PIPE_TEXTURE_3D) {
- offset = tex->image_offset[level][zslice];
- }
- else {
- offset = tex->image_offset[level][0];
- assert(face == 0);
- assert(zslice == 0);
- }
-
- trans = CALLOC_STRUCT(i915_transfer);
- if (trans) {
- pipe_texture_reference(&trans->base.texture, texture);
- trans->base.x = x;
- trans->base.y = y;
- trans->base.width = w;
- trans->base.height = h;
- trans->base.stride = tex->stride;
- trans->offset = offset;
- trans->base.usage = usage;
- }
- return &trans->base;
-}
-
-static void *
-i915_transfer_map(struct pipe_screen *screen,
- struct pipe_transfer *transfer)
-{
- struct i915_texture *tex = (struct i915_texture *)transfer->texture;
- struct intel_winsys *iws = i915_screen(tex->base.screen)->iws;
- char *map;
- boolean write = FALSE;
- enum pipe_format format = tex->base.format;
-
- if (transfer->usage & PIPE_TRANSFER_WRITE)
- write = TRUE;
-
- map = iws->buffer_map(iws, tex->buffer, write);
- if (map == NULL)
- return NULL;
-
- return map + i915_transfer(transfer)->offset +
- transfer->y / util_format_get_blockheight(format) * transfer->stride +
- transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
-}
-
-static void
-i915_transfer_unmap(struct pipe_screen *screen,
- struct pipe_transfer *transfer)
-{
- struct i915_texture *tex = (struct i915_texture *)transfer->texture;
- struct intel_winsys *iws = i915_screen(tex->base.screen)->iws;
- iws->buffer_unmap(iws, tex->buffer);
-}
-
-static void
-i915_tex_transfer_destroy(struct pipe_transfer *trans)
-{
- pipe_texture_reference(&trans->texture, NULL);
- FREE(trans);
-}
-
-
-/*
- * Other texture functions
- */
-
-
-void
-i915_init_screen_texture_functions(struct i915_screen *is)
-{
- is->base.texture_create = i915_texture_create;
- is->base.texture_blanket = i915_texture_blanket;
- is->base.texture_destroy = i915_texture_destroy;
- is->base.get_tex_surface = i915_get_tex_surface;
- is->base.tex_surface_destroy = i915_tex_surface_destroy;
- is->base.get_tex_transfer = i915_get_tex_transfer;
- is->base.transfer_map = i915_transfer_map;
- is->base.transfer_unmap = i915_transfer_unmap;
- is->base.tex_transfer_destroy = i915_tex_transfer_destroy;
-}
-
-struct pipe_texture *
-i915_texture_blanket_intel(struct pipe_screen *screen,
- struct pipe_texture *base,
- unsigned stride,
- struct intel_buffer *buffer)
-{
- struct i915_texture *tex;
- assert(screen);
-
- /* Only supports one type */
- if (base->target != PIPE_TEXTURE_2D ||
- base->last_level != 0 ||
- base->depth0 != 1) {
- return NULL;
- }
-
- tex = CALLOC_STRUCT(i915_texture);
- if (!tex)
- return NULL;
-
- tex->base = *base;
- pipe_reference_init(&tex->base.reference, 1);
- tex->base.screen = screen;
-
- tex->stride = stride;
-
- i915_miptree_set_level_info(tex, 0, 1, base->width0, base->height0, 1);
- i915_miptree_set_image_offset(tex, 0, 0, 0, 0);
-
- tex->buffer = buffer;
-
- return &tex->base;
-}
-
-boolean
-i915_get_texture_buffer_intel(struct pipe_texture *texture,
- struct intel_buffer **buffer,
- unsigned *stride)
-{
- struct i915_texture *tex = (struct i915_texture *)texture;
-
- if (!texture)
- return FALSE;
-
- *stride = tex->stride;
- *buffer = tex->buffer;
-
- return TRUE;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-14 05:12:26 +0000