Squashed commit of the following:
[mesa.git] / src / gallium / drivers / r300 / r300_texture.c
index cb53619fe5ef450ae1329bd295688829d86854e4..60ea763dfae7f41c30995fd3684fd80399d7e120 100644 (file)
 
 #include "r300_context.h"
 #include "r300_texture.h"
+#include "r300_transfer.h"
 #include "r300_screen.h"
-#include "r300_state_inlines.h"
+#include "r300_winsys.h"
 
-#include "radeon_winsys.h"
+/* XXX Enable float textures here. */
+/*#define ENABLE_FLOAT_TEXTURES*/
 
 #define TILE_WIDTH 0
 #define TILE_HEIGHT 1
@@ -46,6 +48,18 @@ static const unsigned microblock_table[5][3][2] = {
     {{ 2, 1}, {0, 0}, {0, 0}}  /* 128 bits per pixel */
 };
 
+/* Return true for non-compressed and non-YUV formats. */
+static boolean r300_format_is_plain(enum pipe_format format)
+{
+    const struct util_format_description *desc = util_format_description(format);
+
+    if (!format) {
+        return FALSE;
+    }
+
+    return desc->layout == UTIL_FORMAT_LAYOUT_PLAIN;
+}
+
 /* Translate a pipe_format into a useful texture format for sampling.
  *
  * Some special formats are translated directly using R300_EASY_TX_FORMAT,
@@ -62,7 +76,7 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
 {
     uint32_t result = 0;
     const struct util_format_description *desc;
-    unsigned components = 0, i;
+    unsigned i;
     boolean uniform = TRUE;
     const uint32_t swizzle_shift[4] = {
         R300_TX_FORMAT_R_SHIFT,
@@ -93,7 +107,7 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
                 case PIPE_FORMAT_Z16_UNORM:
                     return R300_EASY_TX_FORMAT(X, X, X, X, X16);
                 case PIPE_FORMAT_X8Z24_UNORM:
-                case PIPE_FORMAT_S8Z24_UNORM:
+                case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
                     return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
                 default:
                     return ~0; /* Unsupported. */
@@ -147,8 +161,8 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
         }
     }
 
-    /* Compressed formats. */
-    if (desc->layout == UTIL_FORMAT_LAYOUT_COMPRESSED) {
+    /* S3TC formats. */
+    if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
         switch (format) {
             case PIPE_FORMAT_DXT1_RGB:
             case PIPE_FORMAT_DXT1_RGBA:
@@ -166,28 +180,35 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
         }
     }
 
-    /* Get the number of components. */
-    for (i = 0; i < 4; i++) {
-        if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
-            ++components;
-        }
-    }
-
     /* Add sign. */
-    for (i = 0; i < components; i++) {
+    for (i = 0; i < desc->nr_channels; i++) {
         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
             result |= sign_bit[i];
         }
     }
 
+    /* RGTC formats. */
+    if (desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
+        switch (format) {
+            case PIPE_FORMAT_RGTC1_UNORM:
+            case PIPE_FORMAT_RGTC1_SNORM:
+                return R500_TX_FORMAT_ATI1N | result;
+            case PIPE_FORMAT_RGTC2_UNORM:
+            case PIPE_FORMAT_RGTC2_SNORM:
+                return R400_TX_FORMAT_ATI2N | result;
+            default:
+                return ~0; /* Unsupported/unknown. */
+        }
+    }
+
     /* See whether the components are of the same size. */
-    for (i = 1; i < components; i++) {
+    for (i = 1; i < desc->nr_channels; i++) {
         uniform = uniform && desc->channel[0].size == desc->channel[i].size;
     }
 
     /* Non-uniform formats. */
     if (!uniform) {
-        switch (components) {
+        switch (desc->nr_channels) {
             case 3:
                 if (desc->channel[0].size == 5 &&
                     desc->channel[1].size == 6 &&
@@ -229,7 +250,7 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
 
             switch (desc->channel[0].size) {
                 case 4:
-                    switch (components) {
+                    switch (desc->nr_channels) {
                         case 2:
                             return R300_TX_FORMAT_Y4X4 | result;
                         case 4:
@@ -238,7 +259,7 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
                     return ~0;
 
                 case 8:
-                    switch (components) {
+                    switch (desc->nr_channels) {
                         case 1:
                             return R300_TX_FORMAT_X8 | result;
                         case 2:
@@ -249,7 +270,7 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
                     return ~0;
 
                 case 16:
-                    switch (components) {
+                    switch (desc->nr_channels) {
                         case 1:
                             return R300_TX_FORMAT_X16 | result;
                         case 2:
@@ -260,12 +281,11 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
             }
             return ~0;
 
-/* XXX Enable float textures here. */
-#if 0
+#if defined(ENABLE_FLOAT_TEXTURES)
         case UTIL_FORMAT_TYPE_FLOAT:
             switch (desc->channel[0].size) {
                 case 16:
-                    switch (components) {
+                    switch (desc->nr_channels) {
                         case 1:
                             return R300_TX_FORMAT_16F | result;
                         case 2:
@@ -276,7 +296,7 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
                     return ~0;
 
                 case 32:
-                    switch (components) {
+                    switch (desc->nr_channels) {
                         case 1:
                             return R300_TX_FORMAT_32F | result;
                         case 2:
@@ -291,6 +311,17 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
     return ~0; /* Unsupported/unknown. */
 }
 
+static uint32_t r500_tx_format_msb_bit(enum pipe_format format)
+{
+    switch (format) {
+        case PIPE_FORMAT_RGTC1_UNORM:
+        case PIPE_FORMAT_RGTC1_SNORM:
+            return R500_TXFORMAT_MSB;
+        default:
+            return 0;
+    }
+}
+
 /* Buffer formats. */
 
 /* Colorbuffer formats. This is the unswizzled format of the RB3D block's
@@ -331,12 +362,13 @@ static uint32_t r300_translate_colorformat(enum pipe_format format)
         /* 64-bit buffers. */
         case PIPE_FORMAT_R16G16B16A16_UNORM:
         case PIPE_FORMAT_R16G16B16A16_SNORM:
-        //case PIPE_FORMAT_R16G16B16A16_FLOAT: /* not in pipe_format */
+#if defined(ENABLE_FLOAT_TEXTURES)
+        case PIPE_FORMAT_R16G16B16A16_FLOAT:
+#endif
             return R300_COLOR_FORMAT_ARGB16161616;
 
-/* XXX Enable float textures here. */
-#if 0
         /* 128-bit buffers. */
+#if defined(ENABLE_FLOAT_TEXTURES)
         case PIPE_FORMAT_R32G32B32A32_FLOAT:
             return R300_COLOR_FORMAT_ARGB32323232;
 #endif
@@ -361,7 +393,7 @@ static uint32_t r300_translate_zsformat(enum pipe_format format)
         /* 24-bit depth, ignored stencil */
         case PIPE_FORMAT_X8Z24_UNORM:
         /* 24-bit depth, 8-bit stencil */
-        case PIPE_FORMAT_S8Z24_UNORM:
+        case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
             return R300_DEPTHFORMAT_24BIT_INT_Z_8BIT_STENCIL;
         default:
             return ~0; /* Unsupported. */
@@ -482,15 +514,15 @@ boolean r300_is_sampler_format_supported(enum pipe_format format)
 static void r300_setup_texture_state(struct r300_screen* screen, struct r300_texture* tex)
 {
     struct r300_texture_format_state* state = &tex->state;
-    struct pipe_texture *pt = &tex->tex;
+    struct pipe_resource *pt = &tex->b.b;
     unsigned i;
-    boolean is_r500 = screen->caps->is_r500;
+    boolean is_r500 = screen->caps.is_r500;
 
     /* Set sampler state. */
     state->format0 = R300_TX_WIDTH((pt->width0 - 1) & 0x7ff) |
                      R300_TX_HEIGHT((pt->height0 - 1) & 0x7ff);
 
-    if (tex->is_npot) {
+    if (tex->uses_pitch) {
         /* rectangles love this */
         state->format0 |= R300_TX_PITCH_EN;
         state->format2 = (tex->pitch[0] - 1) & 0x1fff;
@@ -516,34 +548,35 @@ static void r300_setup_texture_state(struct r300_screen* screen, struct r300_tex
         if (pt->height0 > 2048) {
             state->format2 |= R500_TXHEIGHT_BIT11;
         }
+        state->format2 |= r500_tx_format_msb_bit(pt->format);
     }
 
     SCREEN_DBG(screen, DBG_TEX, "r300: Set texture state (%dx%d, %d levels)\n",
                pt->width0, pt->height0, pt->last_level);
 
     /* Set framebuffer state. */
-    if (util_format_is_depth_or_stencil(tex->tex.format)) {
-        for (i = 0; i <= tex->tex.last_level; i++) {
+    if (util_format_is_depth_or_stencil(tex->b.b.format)) {
+        for (i = 0; i <= tex->b.b.last_level; i++) {
             tex->fb_state.depthpitch[i] =
                 tex->pitch[i] |
                 R300_DEPTHMACROTILE(tex->mip_macrotile[i]) |
                 R300_DEPTHMICROTILE(tex->microtile);
         }
-        tex->fb_state.zb_format = r300_translate_zsformat(tex->tex.format);
+        tex->fb_state.zb_format = r300_translate_zsformat(tex->b.b.format);
     } else {
-        for (i = 0; i <= tex->tex.last_level; i++) {
+        for (i = 0; i <= tex->b.b.last_level; i++) {
             tex->fb_state.colorpitch[i] =
                 tex->pitch[i] |
-                r300_translate_colorformat(tex->tex.format) |
+                r300_translate_colorformat(tex->b.b.format) |
                 R300_COLOR_TILE(tex->mip_macrotile[i]) |
                 R300_COLOR_MICROTILE(tex->microtile);
         }
-        tex->fb_state.us_out_fmt = r300_translate_out_fmt(tex->tex.format);
+        tex->fb_state.us_out_fmt = r300_translate_out_fmt(tex->b.b.format);
     }
 }
 
 void r300_texture_reinterpret_format(struct pipe_screen *screen,
-                                     struct pipe_texture *tex,
+                                     struct pipe_resource *tex,
                                      enum pipe_format new_format)
 {
     struct r300_screen *r300screen = r300_screen(screen);
@@ -553,7 +586,7 @@ void r300_texture_reinterpret_format(struct pipe_screen *screen,
 
     tex->format = new_format;
 
-    r300_setup_texture_state(r300_screen(screen), (struct r300_texture*)tex);
+    r300_setup_texture_state(r300_screen(screen), r300_texture(tex));
 }
 
 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
@@ -561,7 +594,7 @@ unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
 {
     unsigned offset = tex->offset[level];
 
-    switch (tex->tex.target) {
+    switch (tex->b.b.target) {
         case PIPE_TEXTURE_3D:
             assert(face == 0);
             return offset + zslice * tex->layer_size[level];
@@ -585,7 +618,7 @@ static unsigned r300_texture_get_tile_size(struct r300_texture* tex,
 {
     unsigned pixsize, tile_size;
 
-    pixsize = util_format_get_blocksize(tex->tex.format);
+    pixsize = util_format_get_blocksize(tex->b.b.format);
     tile_size = microblock_table[util_logbase2(pixsize)][tex->microtile][dim];
 
     if (macrotile) {
@@ -606,9 +639,9 @@ static boolean r300_texture_macro_switch(struct r300_texture *tex,
 
     tile = r300_texture_get_tile_size(tex, dim, TRUE);
     if (dim == TILE_WIDTH) {
-        texdim = u_minify(tex->tex.width0, level);
+        texdim = u_minify(tex->b.b.width0, level);
     } else {
-        texdim = u_minify(tex->tex.height0, level);
+        texdim = u_minify(tex->b.b.height0, level);
     }
 
     /* See TX_FILTER1_n.MACRO_SWITCH. */
@@ -632,22 +665,22 @@ unsigned r300_texture_get_stride(struct r300_screen* screen,
         return tex->stride_override;
 
     /* Check the level. */
-    if (level > tex->tex.last_level) {
+    if (level > tex->b.b.last_level) {
         SCREEN_DBG(screen, DBG_TEX, "%s: level (%u) > last_level (%u)\n",
-                   __FUNCTION__, level, tex->tex.last_level);
+                   __FUNCTION__, level, tex->b.b.last_level);
         return 0;
     }
 
-    width = u_minify(tex->tex.width0, level);
+    width = u_minify(tex->b.b.width0, level);
 
-    if (!util_format_is_compressed(tex->tex.format)) {
+    if (r300_format_is_plain(tex->b.b.format)) {
         tile_width = r300_texture_get_tile_size(tex, TILE_WIDTH,
                                                 tex->mip_macrotile[level]);
         width = align(width, tile_width);
 
-        return util_format_get_stride(tex->tex.format, width);
+        return util_format_get_stride(tex->b.b.format, width);
     } else {
-        return align(util_format_get_stride(tex->tex.format, width), 32);
+        return align(util_format_get_stride(tex->b.b.format, width), 32);
     }
 }
 
@@ -656,23 +689,26 @@ static unsigned r300_texture_get_nblocksy(struct r300_texture* tex,
 {
     unsigned height, tile_height;
 
-    height = u_minify(tex->tex.height0, level);
+    height = u_minify(tex->b.b.height0, level);
 
-    if (!util_format_is_compressed(tex->tex.format)) {
+    if (r300_format_is_plain(tex->b.b.format)) {
         tile_height = r300_texture_get_tile_size(tex, TILE_HEIGHT,
                                                  tex->mip_macrotile[level]);
         height = align(height, tile_height);
+
+        /* This is needed for the kernel checker, unfortunately. */
+        height = util_next_power_of_two(height);
     }
 
-    return util_format_get_nblocksy(tex->tex.format, height);
+    return util_format_get_nblocksy(tex->b.b.format, height);
 }
 
 static void r300_setup_miptree(struct r300_screen* screen,
                                struct r300_texture* tex)
 {
-    struct pipe_texture* base = &tex->tex;
+    struct pipe_resource* base = &tex->b.b;
     unsigned stride, size, layer_size, nblocksy, i;
-    boolean rv350_mode = screen->caps->family >= CHIP_FAMILY_RV350;
+    boolean rv350_mode = screen->caps.family >= CHIP_FAMILY_RV350;
 
     SCREEN_DBG(screen, DBG_TEX, "r300: Making miptree for texture, format %s\n",
                util_format_name(base->format));
@@ -681,7 +717,8 @@ static void r300_setup_miptree(struct r300_screen* screen,
         /* Let's see if this miplevel can be macrotiled. */
         tex->mip_macrotile[i] =
             (tex->macrotile == R300_BUFFER_TILED &&
-             r300_texture_macro_switch(tex, i, rv350_mode, TILE_WIDTH)) ?
+             r300_texture_macro_switch(tex, i, rv350_mode, TILE_WIDTH) &&
+             r300_texture_macro_switch(tex, i, rv350_mode, TILE_HEIGHT)) ?
              R300_BUFFER_TILED : R300_BUFFER_LINEAR;
 
         stride = r300_texture_get_stride(screen, tex, i);
@@ -708,22 +745,24 @@ static void r300_setup_miptree(struct r300_screen* screen,
 
 static void r300_setup_flags(struct r300_texture* tex)
 {
-    tex->is_npot = !util_is_power_of_two(tex->tex.width0) ||
-                   !util_is_power_of_two(tex->tex.height0);
+    tex->uses_pitch = !util_is_power_of_two(tex->b.b.width0) ||
+                      !util_is_power_of_two(tex->b.b.height0) ||
+                      tex->stride_override;
 }
 
 static void r300_setup_tiling(struct pipe_screen *screen,
                               struct r300_texture *tex)
 {
-    enum pipe_format format = tex->tex.format;
-    boolean rv350_mode = r300_screen(screen)->caps->family >= CHIP_FAMILY_RV350;
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
+    enum pipe_format format = tex->b.b.format;
+    boolean rv350_mode = r300_screen(screen)->caps.family >= CHIP_FAMILY_RV350;
 
-    if (util_format_is_compressed(format)) {
+    if (!r300_format_is_plain(format)) {
         return;
     }
 
-    if (tex->tex.width0 == 1 ||
-        tex->tex.height0 == 1) {
+    if (tex->b.b.width0 == 1 ||
+        tex->b.b.height0 == 1) {
         return;
     }
 
@@ -734,12 +773,12 @@ static void r300_setup_tiling(struct pipe_screen *screen,
             tex->microtile = R300_BUFFER_TILED;
             break;
 
-        /* XXX Square-tiling doesn't work with kernel older than 2.6.34,
-         * XXX need to check the DRM version */
-        /*case 2:
+        case 2:
         case 8:
-            tex->microtile = R300_BUFFER_SQUARETILED;
-            break;*/
+            if (rws->get_value(rws, R300_VID_SQUARE_TILING_SUPPORT)) {
+                tex->microtile = R300_BUFFER_SQUARETILED;
+            }
+            break;
     }
 
     /* Set macrotiling. */
@@ -749,9 +788,73 @@ static void r300_setup_tiling(struct pipe_screen *screen,
     }
 }
 
+
+static unsigned r300_texture_is_referenced(struct pipe_context *context,
+                                        struct pipe_resource *texture,
+                                        unsigned face, unsigned level)
+{
+    struct r300_context *r300 = r300_context(context);
+    struct r300_texture *rtex = (struct r300_texture *)texture;
+
+    if (r300->rws->is_buffer_referenced(r300->rws, rtex->buffer))
+        return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
+
+    return PIPE_UNREFERENCED;
+}
+
+static void r300_texture_destroy(struct pipe_screen *screen,
+                                struct pipe_resource* texture)
+{
+    struct r300_texture* tex = (struct r300_texture*)texture;
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)texture->screen->winsys;
+
+    rws->buffer_reference(rws, &tex->buffer, NULL);
+    FREE(tex);
+}
+
+
+
+
+static boolean
+    r300_texture_get_handle(struct pipe_screen* screen,
+                            struct pipe_resource *texture,
+                            struct winsys_handle *whandle)
+{
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
+    struct r300_texture* tex = (struct r300_texture*)texture;
+    unsigned stride;
+
+    if (!tex) {
+        return FALSE;
+    }
+
+    stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
+
+    rws->buffer_get_handle(rws, tex->buffer, stride, whandle);
+
+    return TRUE;
+}
+
+
+
+struct u_resource_vtbl r300_texture_vtbl = 
+{
+   r300_texture_get_handle,          /* get_handle */
+   r300_texture_destroy,             /* resource_destroy */
+   r300_texture_is_referenced,       /* is_resource_referenced */
+   r300_texture_get_transfer,        /* get_transfer */
+   r300_texture_transfer_destroy,     /* transfer_destroy */
+   r300_texture_transfer_map,        /* transfer_map */
+   u_default_transfer_flush_region,   /* transfer_flush_region */
+   r300_texture_transfer_unmap,              /* transfer_unmap */
+   u_default_transfer_inline_write    /* transfer_inline_write */
+};
+
+
+
 /* Create a new texture. */
-static struct pipe_texture* r300_texture_create(struct pipe_screen* screen,
-                                         const struct pipe_texture* template)
+struct pipe_resource* r300_texture_create(struct pipe_screen* screen,
+                                          const struct pipe_resource* base)
 {
     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
     struct r300_screen* rscreen = r300_screen(screen);
@@ -761,50 +864,47 @@ static struct pipe_texture* r300_texture_create(struct pipe_screen* screen,
         return NULL;
     }
 
-    tex->tex = *template;
-    pipe_reference_init(&tex->tex.reference, 1);
-    tex->tex.screen = screen;
+    tex->b.b = *base;
+    tex->b.vtbl = &r300_texture_vtbl;
+    pipe_reference_init(&tex->b.b.reference, 1);
+    tex->b.b.screen = screen;
 
     r300_setup_flags(tex);
-    if (!(template->tex_usage & R300_TEXTURE_USAGE_TRANSFER)) {
+    if (!(base->flags & R300_RESOURCE_FLAG_TRANSFER) &&
+        !(base->bind & PIPE_BIND_SCANOUT)) {
         r300_setup_tiling(screen, tex);
     }
     r300_setup_miptree(rscreen, tex);
     r300_setup_texture_state(rscreen, tex);
 
     tex->buffer = rws->buffer_create(rws, 2048,
-                                    PIPE_BUFFER_USAGE_PIXEL,
+                                    PIPE_BIND_SAMPLER_VIEW, /* XXX */
                                     tex->size);
     rws->buffer_set_tiling(rws, tex->buffer,
                           tex->pitch[0],
-                          tex->microtile != R300_BUFFER_LINEAR,
-                          tex->macrotile != R300_BUFFER_LINEAR);
+                          tex->microtile,
+                          tex->macrotile);
 
     if (!tex->buffer) {
         FREE(tex);
         return NULL;
     }
 
-    return (struct pipe_texture*)tex;
+    return (struct pipe_resource*)tex;
 }
 
-static void r300_texture_destroy(struct pipe_texture* texture)
-{
-    struct r300_texture* tex = (struct r300_texture*)texture;
-    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)texture->screen->winsys;
 
-    rws->buffer_reference(rws, &tex->buffer, NULL);
-    FREE(tex);
-}
 
-static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
-                                                 struct pipe_texture* texture,
-                                                 unsigned face,
-                                                 unsigned level,
-                                                 unsigned zslice,
-                                                 unsigned flags)
+/* Not required to implement u_resource_vtbl, consider moving to another file:
+ */
+struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
+                                         struct pipe_resource* texture,
+                                         unsigned face,
+                                         unsigned level,
+                                         unsigned zslice,
+                                         unsigned flags)
 {
-    struct r300_texture* tex = (struct r300_texture*)texture;
+    struct r300_texture* tex = r300_texture(texture);
     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
     unsigned offset;
 
@@ -812,7 +912,7 @@ static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 
     if (surface) {
         pipe_reference_init(&surface->reference, 1);
-        pipe_texture_reference(&surface->texture, texture);
+        pipe_resource_reference(&surface->texture, texture);
         surface->format = texture->format;
         surface->width = u_minify(texture->width0, level);
         surface->height = u_minify(texture->height0, level);
@@ -827,23 +927,25 @@ static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
     return surface;
 }
 
-static void r300_tex_surface_destroy(struct pipe_surface* s)
+/* Not required to implement u_resource_vtbl, consider moving to another file:
+ */
+void r300_tex_surface_destroy(struct pipe_surface* s)
 {
-    pipe_texture_reference(&s->texture, NULL);
+    pipe_resource_reference(&s->texture, NULL);
     FREE(s);
 }
 
-
-static struct pipe_texture*
-    r300_texture_from_handle(struct pipe_screen* screen,
-                             const struct pipe_texture* base,
-                             struct winsys_handle *whandle)
+struct pipe_resource*
+r300_texture_from_handle(struct pipe_screen* screen,
+                         const struct pipe_resource* base,
+                         struct winsys_handle *whandle)
 {
     struct r300_winsys_screen *rws = (struct r300_winsys_screen*)screen->winsys;
     struct r300_screen* rscreen = r300_screen(screen);
     struct r300_winsys_buffer *buffer;
     struct r300_texture* tex;
     unsigned stride;
+    boolean override_zb_flags;
 
     /* Support only 2D textures without mipmaps */
     if (base->target != PIPE_TEXTURE_2D ||
@@ -862,122 +964,50 @@ static struct pipe_texture*
         return NULL;
     }
 
-    tex->tex = *base;
-    pipe_reference_init(&tex->tex.reference, 1);
-    tex->tex.screen = screen;
+    tex->b.b = *base;
+    tex->b.vtbl = &r300_texture_vtbl;
+    pipe_reference_init(&tex->b.b.reference, 1);
+    tex->b.b.screen = screen;
 
     tex->stride_override = stride;
-    tex->pitch[0] = stride / util_format_get_blocksize(base->format);
-
-    r300_setup_flags(tex);
-    r300_setup_texture_state(rscreen, tex);
 
     /* one ref already taken */
     tex->buffer = buffer;
 
-    return (struct pipe_texture*)tex;
-}
-
-static boolean
-    r300_texture_get_handle(struct pipe_screen* screen,
-                            struct pipe_texture *texture,
-                            struct winsys_handle *whandle)
-{
-    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
-    struct r300_texture* tex = (struct r300_texture*)texture;
-    unsigned stride;
-
-    if (!tex) {
-        return FALSE;
-    }
-
-    stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
-
-    rws->buffer_get_handle(rws, tex->buffer, stride, whandle);
-
-    return TRUE;
-}
-
-static struct pipe_video_surface *
-r300_video_surface_create(struct pipe_screen *screen,
-                          enum pipe_video_chroma_format chroma_format,
-                          unsigned width, unsigned height)
-{
-    struct r300_video_surface *r300_vsfc;
-    struct pipe_texture template;
-
-    assert(screen);
-    assert(width && height);
-
-    r300_vsfc = CALLOC_STRUCT(r300_video_surface);
-    if (!r300_vsfc)
-       return NULL;
-
-    pipe_reference_init(&r300_vsfc->base.reference, 1);
-    r300_vsfc->base.screen = screen;
-    r300_vsfc->base.chroma_format = chroma_format;
-    r300_vsfc->base.width = width;
-    r300_vsfc->base.height = height;
-
-    memset(&template, 0, sizeof(struct pipe_texture));
-    template.target = PIPE_TEXTURE_2D;
-    template.format = PIPE_FORMAT_B8G8R8X8_UNORM;
-    template.last_level = 0;
-    template.width0 = util_next_power_of_two(width);
-    template.height0 = util_next_power_of_two(height);
-    template.depth0 = 1;
-    template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
-                         PIPE_TEXTURE_USAGE_RENDER_TARGET;
-
-    r300_vsfc->tex = screen->texture_create(screen, &template);
-    if (!r300_vsfc->tex)
-    {
-        FREE(r300_vsfc);
-        return NULL;
-    }
-
-    return &r300_vsfc->base;
-}
+    rws->buffer_get_tiling(rws, buffer, &tex->microtile, &tex->macrotile);
+    r300_setup_flags(tex);
 
-static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
-{
-    struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
-    pipe_texture_reference(&r300_vsfc->tex, NULL);
-    FREE(r300_vsfc);
-}
+    /* Enforce microtiled zbuffer. */
+    override_zb_flags = util_format_is_depth_or_stencil(base->format) &&
+                        tex->microtile == R300_BUFFER_LINEAR;
 
-void r300_init_screen_texture_functions(struct pipe_screen* screen)
-{
-    screen->texture_create = r300_texture_create;
-    screen->texture_from_handle = r300_texture_from_handle;
-    screen->texture_get_handle = r300_texture_get_handle;
-    screen->texture_destroy = r300_texture_destroy;
-    screen->get_tex_surface = r300_get_tex_surface;
-    screen->tex_surface_destroy = r300_tex_surface_destroy;
-
-    screen->video_surface_create = r300_video_surface_create;
-    screen->video_surface_destroy= r300_video_surface_destroy;
-}
+    if (override_zb_flags) {
+        switch (util_format_get_blocksize(base->format)) {
+            case 4:
+                tex->microtile = R300_BUFFER_TILED;
+                break;
 
-boolean r300_get_texture_buffer(struct pipe_screen* screen,
-                                struct pipe_texture* texture,
-                                struct r300_winsys_buffer** buffer,
-                                unsigned* stride)
-{
-    struct r300_texture* tex = (struct r300_texture*)texture;
-    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
-    struct r300_winsys_buffer *buf;
+            case 2:
+                if (rws->get_value(rws, R300_VID_SQUARE_TILING_SUPPORT)) {
+                    tex->microtile = R300_BUFFER_SQUARETILED;
+                    break;
+                }
+                /* Pass through. */
 
-    if (!tex) {
-        return FALSE;
+            default:
+                override_zb_flags = FALSE;
+        }
     }
 
-    rws->buffer_reference(rws, &buf, tex->buffer);
+    r300_setup_miptree(rscreen, tex);
+    r300_setup_texture_state(rscreen, tex);
 
-    if (stride) {
-        *stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
+    if (override_zb_flags) {
+        rws->buffer_set_tiling(rws, tex->buffer,
+                               tex->pitch[0],
+                               tex->microtile,
+                               tex->macrotile);
     }
-
-    *buffer = buf;
-    return TRUE;
+    return (struct pipe_resource*)tex;
 }
+