#include "ilo_screen.h"
#include "ilo_resource.h"
+static struct intel_bo *
+alloc_buf_bo(const struct ilo_resource *res)
+{
+ struct ilo_screen *is = ilo_screen(res->base.screen);
+ struct intel_bo *bo;
+ const char *name;
+ const unsigned size = res->bo_width;
+
+ switch (res->base.bind) {
+ case PIPE_BIND_VERTEX_BUFFER:
+ name = "vertex buffer";
+ break;
+ case PIPE_BIND_INDEX_BUFFER:
+ name = "index buffer";
+ break;
+ case PIPE_BIND_CONSTANT_BUFFER:
+ name = "constant buffer";
+ break;
+ case PIPE_BIND_STREAM_OUTPUT:
+ name = "stream output";
+ break;
+ default:
+ name = "unknown buffer";
+ break;
+ }
+
+ /* this is what a buffer supposed to be like */
+ assert(res->bo_width * res->bo_height * res->bo_cpp == size);
+ assert(res->tiling == INTEL_TILING_NONE);
+ assert(res->bo_stride == 0);
+
+ if (res->handle) {
+ bo = is->winsys->import_handle(is->winsys, name,
+ res->bo_width, res->bo_height, res->bo_cpp, res->handle);
+
+ /* since the bo is shared to us, make sure it meets the expectations */
+ if (bo) {
+ assert(bo->get_size(res->bo) == size);
+ assert(bo->get_tiling(res->bo) == res->tiling);
+ assert(bo->get_pitch(res->bo) == res->bo_stride);
+ }
+ }
+ else {
+ bo = is->winsys->alloc_buffer(is->winsys, name, size, 0);
+ }
+
+ return bo;
+}
+
+static struct intel_bo *
+alloc_tex_bo(const struct ilo_resource *res)
+{
+ struct ilo_screen *is = ilo_screen(res->base.screen);
+ struct intel_bo *bo;
+ const char *name;
+
+ switch (res->base.target) {
+ case PIPE_TEXTURE_1D:
+ name = "1D texture";
+ break;
+ case PIPE_TEXTURE_2D:
+ name = "2D texture";
+ break;
+ case PIPE_TEXTURE_3D:
+ name = "3D texture";
+ break;
+ case PIPE_TEXTURE_CUBE:
+ name = "cube texture";
+ break;
+ case PIPE_TEXTURE_RECT:
+ name = "rectangle texture";
+ break;
+ case PIPE_TEXTURE_1D_ARRAY:
+ name = "1D array texture";
+ break;
+ case PIPE_TEXTURE_2D_ARRAY:
+ name = "2D array texture";
+ break;
+ case PIPE_TEXTURE_CUBE_ARRAY:
+ name = "cube array texture";
+ break;
+ default:
+ name ="unknown texture";
+ break;
+ }
+
+ if (res->handle) {
+ bo = is->winsys->import_handle(is->winsys, name,
+ res->bo_width, res->bo_height, res->bo_cpp, res->handle);
+ }
+ else {
+ const bool for_render =
+ (res->base.bind & (PIPE_BIND_DEPTH_STENCIL |
+ PIPE_BIND_RENDER_TARGET));
+ const unsigned long flags =
+ (for_render) ? INTEL_ALLOC_FOR_RENDER : 0;
+
+ bo = is->winsys->alloc(is->winsys, name,
+ res->bo_width, res->bo_height, res->bo_cpp,
+ res->tiling, flags);
+ }
+
+ return bo;
+}
+
+static bool
+realloc_bo(struct ilo_resource *res)
+{
+ struct intel_bo *old_bo = res->bo;
+
+ /* a shared bo cannot be reallocated */
+ if (old_bo && res->handle)
+ return false;
+
+ if (res->base.target == PIPE_BUFFER)
+ res->bo = alloc_buf_bo(res);
+ else
+ res->bo = alloc_tex_bo(res);
+
+ if (!res->bo) {
+ res->bo = old_bo;
+ return false;
+ }
+
+ /* winsys may decide to use a different tiling */
+ res->tiling = res->bo->get_tiling(res->bo);
+ res->bo_stride = res->bo->get_pitch(res->bo);
+
+ if (old_bo)
+ old_bo->unreference(old_bo);
+
+ return true;
+}
+
+static bool
+alloc_slice_offsets(struct ilo_resource *res)
+{
+ int depth, lv;
+
+ /* sum the depths of all levels */
+ depth = 0;
+ for (lv = 0; lv <= res->base.last_level; lv++)
+ depth += u_minify(res->base.depth0, lv);
+
+ /*
+ * There are (depth * res->base.array_size) slices. Either depth is one
+ * (non-3D) or res->base.array_size is one (non-array), but it does not
+ * matter.
+ */
+ res->slice_offsets[0] =
+ CALLOC(depth * res->base.array_size, sizeof(res->slice_offsets[0][0]));
+ if (!res->slice_offsets[0])
+ return false;
+
+ /* point to the respective positions in the buffer */
+ for (lv = 1; lv <= res->base.last_level; lv++) {
+ res->slice_offsets[lv] = res->slice_offsets[lv - 1] +
+ u_minify(res->base.depth0, lv - 1) * res->base.array_size;
+ }
+
+ return true;
+}
+
+static void
+free_slice_offsets(struct ilo_resource *res)
+{
+ int lv;
+
+ FREE(res->slice_offsets[0]);
+ for (lv = 0; lv <= res->base.last_level; lv++)
+ res->slice_offsets[lv] = NULL;
+}
+
+struct layout_tex_info {
+ bool compressed;
+ int block_width, block_height;
+ int align_i, align_j;
+ int qpitch;
+
+ struct {
+ int w, h, d;
+ } sizes[PIPE_MAX_TEXTURE_LEVELS];
+};
+
+/**
+ * Prepare for texture layout.
+ */
+static void
+layout_tex_init(const struct ilo_resource *res, struct layout_tex_info *info)
+{
+ struct ilo_screen *is = ilo_screen(res->base.screen);
+ const enum intel_tiling_mode tiling = res->tiling;
+ const struct pipe_resource *templ = &res->base;
+ int last_level, lv;
+
+ memset(info, 0, sizeof(*info));
+
+ info->compressed = util_format_is_compressed(templ->format);
+ info->block_width = util_format_get_blockwidth(templ->format);
+ info->block_height = util_format_get_blockheight(templ->format);
+
+ /*
+ * From the Sandy Bridge PRM, volume 1 part 1, page 113:
+ *
+ * "surface format align_i align_j
+ * YUV 4:2:2 formats 4 *see below
+ * BC1-5 4 4
+ * FXT1 8 4
+ * all other formats 4 *see below"
+ *
+ * "- align_j = 4 for any depth buffer
+ * - align_j = 2 for separate stencil buffer
+ * - align_j = 4 for any render target surface is multisampled (4x)
+ * - align_j = 4 for any render target surface with Surface Vertical
+ * Alignment = VALIGN_4
+ * - align_j = 2 for any render target surface with Surface Vertical
+ * Alignment = VALIGN_2
+ * - align_j = 2 for all other render target surface
+ * - align_j = 2 for any sampling engine surface with Surface Vertical
+ * Alignment = VALIGN_2
+ * - align_j = 4 for any sampling engine surface with Surface Vertical
+ * Alignment = VALIGN_4"
+ *
+ * From the Sandy Bridge PRM, volume 4 part 1, page 86:
+ *
+ * "This field (Surface Vertical Alignment) must be set to VALIGN_2 if
+ * the Surface Format is 96 bits per element (BPE)."
+ *
+ * They can be rephrased as
+ *
+ * align_i align_j
+ * compressed formats block width block height
+ * PIPE_FORMAT_S8_UINT 4 2
+ * other depth/stencil formats 4 4
+ * 4x multisampled 4 4
+ * bpp 96 4 2
+ * others 4 2 or 4
+ */
+
+ /*
+ * From the Ivy Bridge PRM, volume 1 part 1, page 110:
+ *
+ * "surface defined by surface format align_i align_j
+ * 3DSTATE_DEPTH_BUFFER D16_UNORM 8 4
+ * not D16_UNORM 4 4
+ * 3DSTATE_STENCIL_BUFFER N/A 8 8
+ * SURFACE_STATE BC*, ETC*, EAC* 4 4
+ * FXT1 8 4
+ * all others (set by SURFACE_STATE)"
+ *
+ * From the Ivy Bridge PRM, volume 4 part 1, page 63:
+ *
+ * "- This field (Surface Vertical Aligment) is intended to be set to
+ * VALIGN_4 if the surface was rendered as a depth buffer, for a
+ * multisampled (4x) render target, or for a multisampled (8x)
+ * render target, since these surfaces support only alignment of 4.
+ * - Use of VALIGN_4 for other surfaces is supported, but uses more
+ * memory.
+ * - This field must be set to VALIGN_4 for all tiled Y Render Target
+ * surfaces.
+ * - Value of 1 is not supported for format YCRCB_NORMAL (0x182),
+ * YCRCB_SWAPUVY (0x183), YCRCB_SWAPUV (0x18f), YCRCB_SWAPY (0x190)
+ * - If Number of Multisamples is not MULTISAMPLECOUNT_1, this field
+ * must be set to VALIGN_4."
+ * - VALIGN_4 is not supported for surface format R32G32B32_FLOAT."
+ *
+ * "- This field (Surface Horizontal Aligment) is intended to be set to
+ * HALIGN_8 only if the surface was rendered as a depth buffer with
+ * Z16 format or a stencil buffer, since these surfaces support only
+ * alignment of 8.
+ * - Use of HALIGN_8 for other surfaces is supported, but uses more
+ * memory.
+ * - This field must be set to HALIGN_4 if the Surface Format is BC*.
+ * - This field must be set to HALIGN_8 if the Surface Format is
+ * FXT1."
+ *
+ * They can be rephrased as
+ *
+ * align_i align_j
+ * compressed formats block width block height
+ * PIPE_FORMAT_Z16_UNORM 8 4
+ * PIPE_FORMAT_S8_UINT 8 8
+ * other depth/stencil formats 4 or 8 4
+ * 2x or 4x multisampled 4 or 8 4
+ * tiled Y 4 or 8 4 (if rt)
+ * PIPE_FORMAT_R32G32B32_FLOAT 4 or 8 2
+ * others 4 or 8 2 or 4
+ */
+
+ if (info->compressed) {
+ /* this happens to be the case */
+ info->align_i = info->block_width;
+ info->align_j = info->block_height;
+ }
+ else if (util_format_is_depth_or_stencil(templ->format)) {
+ if (is->gen >= ILO_GEN(7)) {
+ switch (templ->format) {
+ case PIPE_FORMAT_Z16_UNORM:
+ info->align_i = 8;
+ info->align_j = 4;
+ break;
+ case PIPE_FORMAT_S8_UINT:
+ info->align_i = 8;
+ info->align_j = 8;
+ break;
+ default:
+ /*
+ * From the Ivy Bridge PRM, volume 2 part 1, page 319:
+ *
+ * "The 3 LSBs of both offsets (Depth Coordinate Offset Y and
+ * Depth Coordinate Offset X) must be zero to ensure correct
+ * alignment"
+ *
+ * We will make use of them and setting align_i to 8 help us meet
+ * the requirement.
+ */
+ info->align_i = (templ->last_level > 0) ? 8 : 4;
+ info->align_j = 4;
+ break;
+ }
+ }
+ else {
+ switch (templ->format) {
+ case PIPE_FORMAT_S8_UINT:
+ info->align_i = 4;
+ info->align_j = 2;
+ break;
+ default:
+ info->align_i = 4;
+ info->align_j = 4;
+ break;
+ }
+ }
+ }
+ else {
+ const bool valign_4 = (templ->nr_samples > 1) ||
+ (is->gen >= ILO_GEN(7) &&
+ (templ->bind & PIPE_BIND_RENDER_TARGET) &&
+ tiling == INTEL_TILING_Y);
+
+ if (valign_4)
+ assert(util_format_get_blocksizebits(templ->format) != 96);
+
+ info->align_i = 4;
+ info->align_j = (valign_4) ? 4 : 2;
+ }
+
+ /*
+ * the fact that align i and j are multiples of block width and height
+ * respectively is what makes the size of the bo a multiple of the block
+ * size, slices start at block boundaries, and many of the computations
+ * work.
+ */
+ assert(info->align_i % info->block_width == 0);
+ assert(info->align_j % info->block_height == 0);
+
+ /* make sure align() works */
+ assert(util_is_power_of_two(info->align_i) &&
+ util_is_power_of_two(info->align_j));
+ assert(util_is_power_of_two(info->block_width) &&
+ util_is_power_of_two(info->block_height));
+
+ last_level = templ->last_level;
+ /* need at least 2 levels to compute qpitch below */
+ if (templ->array_size > 1 && last_level == 0 &&
+ templ->format != PIPE_FORMAT_S8_UINT)
+ last_level++;
+
+ /* compute mip level sizes */
+ for (lv = 0; lv <= last_level; lv++) {
+ int w, h, d;
+
+ w = u_minify(templ->width0, lv);
+ h = u_minify(templ->height0, lv);
+ d = u_minify(templ->depth0, lv);
+
+ /*
+ * From the Sandy Bridge PRM, volume 1 part 1, page 114:
+ *
+ * "The dimensions of the mip maps are first determined by applying
+ * the sizing algorithm presented in Non-Power-of-Two Mipmaps
+ * above. Then, if necessary, they are padded out to compression
+ * block boundaries."
+ */
+ w = align(w, info->block_width);
+ h = align(h, info->block_height);
+
+ /*
+ * From the Sandy Bridge PRM, volume 1 part 1, page 111:
+ *
+ * "If the surface is multisampled (4x), these values must be
+ * adjusted as follows before proceeding:
+ *
+ * W_L = ceiling(W_L / 2) * 4
+ * H_L = ceiling(H_L / 2) * 4"
+ */
+ if (templ->nr_samples > 1) {
+ w = align(w, 2) * 2;
+ h = align(h, 2) * 2;
+ }
+
+ info->sizes[lv].w = w;
+ info->sizes[lv].h = h;
+ info->sizes[lv].d = d;
+ }
+
+ if (templ->array_size > 1) {
+ const int h0 = align(info->sizes[0].h, info->align_j);
+
+ if (templ->format == PIPE_FORMAT_S8_UINT) {
+ info->qpitch = h0;
+ }
+ else {
+ const int h1 = align(info->sizes[1].h, info->align_j);
+
+ /*
+ * From the Sandy Bridge PRM, volume 1 part 1, page 115:
+ *
+ * "The following equation is used for surface formats other than
+ * compressed textures:
+ *
+ * QPitch = (h0 + h1 + 11j)"
+ *
+ * "The equation for compressed textures (BC* and FXT1 surface
+ * formats) follows:
+ *
+ * QPitch = (h0 + h1 + 11j) / 4"
+ *
+ * "[DevSNB] Errata: Sampler MSAA Qpitch will be 4 greater than
+ * the value calculated in the equation above, for every other
+ * odd Surface Height starting from 1 i.e. 1,5,9,13"
+ *
+ * To access the N-th slice, an offset of (Stride * QPitch * N) is
+ * added to the base address. The PRM divides QPitch by 4 for
+ * compressed formats because the block height for those formats are
+ * 4, and it wants QPitch to mean the number of memory rows, as
+ * opposed to texel rows, between slices. Since we use texel rows in
+ * res->slice_offsets, we do not need to divide QPitch by 4.
+ */
+ info->qpitch = h0 + h1 +
+ ((is->gen >= ILO_GEN(7)) ? 12 : 11) * info->align_j;
+
+ if (is->gen == ILO_GEN(6) && templ->nr_samples > 1 &&
+ templ->height0 % 4 == 1)
+ info->qpitch += 4;
+ }
+ }
+}
+
+/**
+ * Layout a 2D texture.
+ */
+static void
+layout_tex_2d(struct ilo_resource *res, const struct layout_tex_info *info)
+{
+ const struct pipe_resource *templ = &res->base;
+ unsigned int level_x, level_y;
+ int lv;
+
+ res->bo_width = 0;
+ res->bo_height = 0;
+
+ level_x = 0;
+ level_y = 0;
+ for (lv = 0; lv <= templ->last_level; lv++) {
+ const unsigned int level_w = info->sizes[lv].w;
+ const unsigned int level_h = info->sizes[lv].h;
+ int slice;
+
+ for (slice = 0; slice < templ->array_size; slice++) {
+ res->slice_offsets[lv][slice].x = level_x;
+ /* slices are qpitch apart in Y-direction */
+ res->slice_offsets[lv][slice].y = level_y + info->qpitch * slice;
+ }
+
+ /* extend the size of the monolithic bo to cover this mip level */
+ if (res->bo_width < level_x + level_w)
+ res->bo_width = level_x + level_w;
+ if (res->bo_height < level_y + level_h)
+ res->bo_height = level_y + level_h;
+
+ /* MIPLAYOUT_BELOW */
+ if (lv == 1)
+ level_x += align(level_w, info->align_i);
+ else
+ level_y += align(level_h, info->align_j);
+ }
+
+ /* we did not take slices into consideration in the computation above */
+ res->bo_height += info->qpitch * (templ->array_size - 1);
+}
+
+/**
+ * Layout a 3D texture.
+ */
+static void
+layout_tex_3d(struct ilo_resource *res, const struct layout_tex_info *info)
+{
+ const struct pipe_resource *templ = &res->base;
+ unsigned int level_y;
+ int lv;
+
+ res->bo_width = 0;
+ res->bo_height = 0;
+
+ level_y = 0;
+ for (lv = 0; lv <= templ->last_level; lv++) {
+ const unsigned int level_w = info->sizes[lv].w;
+ const unsigned int level_h = info->sizes[lv].h;
+ const unsigned int level_d = info->sizes[lv].d;
+ const unsigned int slice_pitch = align(level_w, info->align_i);
+ const unsigned int slice_qpitch = align(level_h, info->align_j);
+ const unsigned int num_slices_per_row = 1 << lv;
+ int slice;
+
+ for (slice = 0; slice < level_d; slice += num_slices_per_row) {
+ int i;
+
+ for (i = 0; i < num_slices_per_row && slice + i < level_d; i++) {
+ res->slice_offsets[lv][slice + i].x = slice_pitch * i;
+ res->slice_offsets[lv][slice + i].y = level_y;
+ }
+
+ /* move on to the next slice row */
+ level_y += slice_qpitch;
+ }
+
+ /* rightmost slice */
+ slice = MIN2(num_slices_per_row, level_d) - 1;
+
+ /* extend the size of the monolithic bo to cover this slice */
+ if (res->bo_width < slice_pitch * slice + level_w)
+ res->bo_width = slice_pitch * slice + level_w;
+ if (lv == templ->last_level)
+ res->bo_height = (level_y - slice_qpitch) + level_h;
+ }
+}
+
+/**
+ * Guess the texture size. For large textures, the errors are relative small.
+ */
+static size_t
+guess_tex_size(const struct pipe_resource *templ,
+ enum intel_tiling_mode tiling)
+{
+ int bo_width, bo_height, bo_stride;
+
+ /* HALIGN_8 and VALIGN_4 */
+ bo_width = align(templ->width0, 8);
+ bo_height = align(templ->height0, 4);
+
+ if (templ->target == PIPE_TEXTURE_3D) {
+ const int num_rows = util_next_power_of_two(templ->depth0);
+ int lv, sum;
+
+ sum = bo_height * templ->depth0;
+ for (lv = 1; lv <= templ->last_level; lv++)
+ sum += u_minify(bo_height, lv) * u_minify(num_rows, lv);
+
+ bo_height = sum;
+ }
+ else if (templ->last_level > 0) {
+ /* MIPLAYOUT_BELOW, ignore qpich */
+ bo_height = (bo_height + u_minify(bo_height, 1)) * templ->array_size;
+ }
+
+ bo_stride = util_format_get_stride(templ->format, bo_width);
+
+ switch (tiling) {
+ case INTEL_TILING_X:
+ bo_stride = align(bo_stride, 512);
+ bo_height = align(bo_height, 8);
+ break;
+ case INTEL_TILING_Y:
+ bo_stride = align(bo_stride, 128);
+ bo_height = align(bo_height, 32);
+ break;
+ default:
+ bo_height = align(bo_height, 2);
+ break;
+ }
+
+ return util_format_get_2d_size(templ->format, bo_stride, bo_height);
+}
+
+static enum intel_tiling_mode
+get_tex_tiling(const struct ilo_resource *res)
+{
+ const struct pipe_resource *templ = &res->base;
+
+ /*
+ * From the Sandy Bridge PRM, volume 1 part 2, page 32:
+ *
+ * "Display/Overlay Y-Major not supported.
+ * X-Major required for Async Flips"
+ */
+ if (unlikely(templ->bind & PIPE_BIND_SCANOUT))
+ return INTEL_TILING_X;
+
+ /*
+ * From the Sandy Bridge PRM, volume 3 part 2, page 158:
+ *
+ * "The cursor surface address must be 4K byte aligned. The cursor must
+ * be in linear memory, it cannot be tiled."
+ */
+ if (unlikely(templ->bind & PIPE_BIND_CURSOR))
+ return INTEL_TILING_NONE;
+
+ /*
+ * From the Sandy Bridge PRM, volume 2 part 1, page 318:
+ *
+ * "[DevSNB+]: This field (Tiled Surface) must be set to TRUE. Linear
+ * Depth Buffer is not supported."
+ *
+ * "The Depth Buffer, if tiled, must use Y-Major tiling."
+ */
+ if (templ->bind & PIPE_BIND_DEPTH_STENCIL)
+ return INTEL_TILING_Y;
+
+ if (templ->bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) {
+ enum intel_tiling_mode tiling = INTEL_TILING_NONE;
+
+ /*
+ * From the Sandy Bridge PRM, volume 1 part 2, page 32:
+ *
+ * "NOTE: 128BPE Format Color buffer ( render target ) MUST be
+ * either TileX or Linear."
+ *
+ * Also, heuristically set a minimum width/height for enabling tiling.
+ */
+ if (util_format_get_blocksizebits(templ->format) == 128 &&
+ (templ->bind & PIPE_BIND_RENDER_TARGET) && templ->width0 >= 64)
+ tiling = INTEL_TILING_X;
+ else if ((templ->width0 >= 32 && templ->height0 >= 16) ||
+ (templ->width0 >= 16 && templ->height0 >= 32))
+ tiling = INTEL_TILING_Y;
+
+ /* make sure the bo can be mapped through GTT if tiled */
+ if (tiling != INTEL_TILING_NONE) {
+ /*
+ * Usually only the first 256MB of the GTT is mappable.
+ *
+ * See also how intel_context::max_gtt_map_object_size is calculated.
+ */
+ const size_t mappable_gtt_size = 256 * 1024 * 1024;
+ const size_t size = guess_tex_size(templ, tiling);
+
+ /* be conservative */
+ if (size > mappable_gtt_size / 4)
+ tiling = INTEL_TILING_NONE;
+ }
+
+ return tiling;
+ }
+
+ return INTEL_TILING_NONE;
+}
+
+static void
+init_texture(struct ilo_resource *res)
+{
+ const enum pipe_format format = res->base.format;
+ struct layout_tex_info info;
+
+ /* determine tiling first as it may affect the layout */
+ res->tiling = get_tex_tiling(res);
+
+ layout_tex_init(res, &info);
+
+ res->compressed = info.compressed;
+ res->block_width = info.block_width;
+ res->block_height = info.block_height;
+ res->halign_8 = (info.align_i == 8);
+ res->valign_4 = (info.align_j == 4);
+
+ switch (res->base.target) {
+ case PIPE_TEXTURE_1D:
+ case PIPE_TEXTURE_2D:
+ case PIPE_TEXTURE_CUBE:
+ case PIPE_TEXTURE_RECT:
+ case PIPE_TEXTURE_1D_ARRAY:
+ case PIPE_TEXTURE_2D_ARRAY:
+ case PIPE_TEXTURE_CUBE_ARRAY:
+ layout_tex_2d(res, &info);
+ break;
+ case PIPE_TEXTURE_3D:
+ layout_tex_3d(res, &info);
+ break;
+ default:
+ assert(!"unknown resource target");
+ break;
+ }
+
+ /* in blocks */
+ assert(res->bo_width % info.block_width == 0);
+ assert(res->bo_height % info.block_height == 0);
+ res->bo_width /= info.block_width;
+ res->bo_height /= info.block_height;
+ res->bo_cpp = util_format_get_blocksize(format);
+}
+
+static void
+init_buffer(struct ilo_resource *res)
+{
+ res->compressed = false;
+ res->block_width = 1;
+ res->block_height = 1;
+ res->halign_8 = false;
+ res->valign_4 = false;
+
+ res->bo_width = res->base.width0;
+ res->bo_height = 1;
+ res->bo_cpp = 1;
+ res->bo_stride = 0;
+ res->tiling = INTEL_TILING_NONE;
+}
+
+static struct pipe_resource *
+create_resource(struct pipe_screen *screen,
+ const struct pipe_resource *templ,
+ struct winsys_handle *handle)
+{
+ struct ilo_resource *res;
+
+ res = CALLOC_STRUCT(ilo_resource);
+ if (!res)
+ return NULL;
+
+ res->base = *templ;
+ res->base.screen = screen;
+ pipe_reference_init(&res->base.reference, 1);
+ res->handle = handle;
+
+ if (!alloc_slice_offsets(res)) {
+ FREE(res);
+ return NULL;
+ }
+
+ if (templ->target == PIPE_BUFFER)
+ init_buffer(res);
+ else
+ init_texture(res);
+
+ if (!realloc_bo(res)) {
+ free_slice_offsets(res);
+ FREE(res);
+ return NULL;
+ }
+
+ return &res->base;
+}
+
+static boolean
+ilo_can_create_resource(struct pipe_screen *screen,
+ const struct pipe_resource *templ)
+{
+ /*
+ * We do not know if we will fail until we try to allocate the bo.
+ * So just set a limit on the texture size.
+ */
+ const size_t max_size = 1 * 1024 * 1024 * 1024;
+ const size_t size = guess_tex_size(templ, INTEL_TILING_Y);
+
+ return (size <= max_size);
+}
+
+static struct pipe_resource *
+ilo_resource_create(struct pipe_screen *screen,
+ const struct pipe_resource *templ)
+{
+ return create_resource(screen, templ, NULL);
+}
+
+static struct pipe_resource *
+ilo_resource_from_handle(struct pipe_screen *screen,
+ const struct pipe_resource *templ,
+ struct winsys_handle *handle)
+{
+ return create_resource(screen, templ, handle);
+}
+
+static boolean
+ilo_resource_get_handle(struct pipe_screen *screen,
+ struct pipe_resource *r,
+ struct winsys_handle *handle)
+{
+ struct ilo_resource *res = ilo_resource(r);
+ int err;
+
+ err = res->bo->export_handle(res->bo, handle);
+
+ return !err;
+}
+
+static void
+ilo_resource_destroy(struct pipe_screen *screen,
+ struct pipe_resource *r)
+{
+ struct ilo_resource *res = ilo_resource(r);
+
+ free_slice_offsets(res);
+ res->bo->unreference(res->bo);
+ FREE(res);
+}
+
/**
* Initialize resource-related functions.
*/
void
ilo_init_resource_functions(struct ilo_screen *is)
{
- is->base.can_create_resource = NULL;
- is->base.resource_create = NULL;
- is->base.resource_from_handle = NULL;
- is->base.resource_get_handle = NULL;
- is->base.resource_destroy = NULL;
+ is->base.can_create_resource = ilo_can_create_resource;
+ is->base.resource_create = ilo_resource_create;
+ is->base.resource_from_handle = ilo_resource_from_handle;
+ is->base.resource_get_handle = ilo_resource_get_handle;
+ is->base.resource_destroy = ilo_resource_destroy;
}
/**
projects / platform / upstream / mesa.git / commitdiff