* Initial offset for Cube map.
*/
static const int initial_offsets[6][2] = {
- {0, 0},
- {0, 2},
- {1, 0},
- {1, 2},
- {1, 1},
- {1, 3}
+ [PIPE_TEX_FACE_POS_X] = {0, 0},
+ [PIPE_TEX_FACE_POS_Y] = {1, 0},
+ [PIPE_TEX_FACE_POS_Z] = {1, 1},
+ [PIPE_TEX_FACE_NEG_X] = {0, 2},
+ [PIPE_TEX_FACE_NEG_Y] = {1, 2},
+ [PIPE_TEX_FACE_NEG_Z] = {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}
+ [PIPE_TEX_FACE_POS_X] = { 0, 2},
+ [PIPE_TEX_FACE_POS_Y] = {-1, 2},
+ [PIPE_TEX_FACE_POS_Z] = {-1, 1},
+ [PIPE_TEX_FACE_NEG_X] = { 0, 2},
+ [PIPE_TEX_FACE_NEG_Y] = {-1, 2},
+ [PIPE_TEX_FACE_NEG_Z] = {-1, 1},
};
+/**
+ * For compressed level 2
+ */
+static const int bottom_offsets[6] = {
+ [PIPE_TEX_FACE_POS_X] = 16 + 0 * 8,
+ [PIPE_TEX_FACE_POS_Y] = 16 + 1 * 8,
+ [PIPE_TEX_FACE_POS_Z] = 16 + 2 * 8,
+ [PIPE_TEX_FACE_NEG_X] = 16 + 3 * 8,
+ [PIPE_TEX_FACE_NEG_Y] = 16 + 4 * 8,
+ [PIPE_TEX_FACE_NEG_Z] = 16 + 5 * 8,
+};
+
+
/* XXX really need twice the size if x is already pot?
Otherwise just use util_next_power_of_two?
*/
return FALSE;
}
+/**
+ * Cube layout used on i915 and for non-compressed textures on i945.
+ */
+static void
+i9x5_texture_layout_cube(struct i915_texture *tex)
+{
+ struct pipe_resource *pt = &tex->b.b;
+ const unsigned nblocks = util_format_get_nblocksx(pt->format, pt->width0);
+ unsigned level;
+ unsigned face;
+
+ assert(pt->width0 == pt->height0); /* 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_texture_set_level_info(tex, level, 6);
+
+ 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_texture_set_image_offset(tex, level, face, x, y);
+ d >>= 1;
+ x += step_offsets[face][0] * d;
+ y += step_offsets[face][1] * d;
+ }
+ }
+}
+
/*
* i915 layout functions
tex->total_nblocksy = stack_nblocksy * pt->depth0;
}
-static void
-i915_texture_layout_cube(struct i915_texture *tex)
-{
- struct pipe_resource *pt = &tex->b.b;
- const unsigned nblocks = util_format_get_nblocksx(pt->format, pt->width0);
- unsigned level;
- unsigned face;
-
- assert(pt->width0 == pt->height0); /* 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_texture_set_level_info(tex, level, 6);
-
- 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_texture_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_texture_layout(struct i915_texture * tex)
{
i915_texture_layout_3d(tex);
break;
case PIPE_TEXTURE_CUBE:
- i915_texture_layout_cube(tex);
+ i9x5_texture_layout_cube(tex);
break;
default:
assert(0);
i945_texture_layout_cube(struct i915_texture *tex)
{
struct pipe_resource *pt = &tex->b.b;
- unsigned level;
const unsigned nblocks = util_format_get_nblocksx(pt->format, pt->width0);
+ const unsigned dim = pt->width0;
+ unsigned level;
unsigned face;
- /*
- printf("%s %i, %i\n", __FUNCTION__, pt->width0, pt->height0);
- */
-
assert(pt->width0 == pt->height0); /* cubemap images are square */
+ assert(util_next_power_of_two(pt->width0) == pt->width0); /* npot only */
+ assert(util_format_is_s3tc(pt->format)); /* compressed only */
/*
- * 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.
+ *
+ * 64 * 2 / 4 = 32
+ * 14 * 2 = 28
*/
- if (nblocks > 32)
- tex->stride = align(nblocks * util_format_get_blocksize(pt->format) * 2, 4);
+ if (pt->width0 >= 64)
+ tex->stride = nblocks * 2 * util_format_get_blocksize(pt->format);
else
- tex->stride = 14 * 8 * util_format_get_blocksize(pt->format);
+ tex->stride = 14 * 2 * util_format_get_blocksize(pt->format);
- tex->total_nblocksy = nblocks * 4;
+ /*
+ * Something similary apply for height as well.
+ */
+ if (pt->width0 >= 4)
+ tex->total_nblocksy = nblocks * 4 + 1;
+ else
+ tex->total_nblocksy = 1;
- /* Set all the levels to effectively occupy the whole rectangular region.
- */
+ /* Set all the levels to effectively occupy the whole rectangular region */
for (level = 0; level <= pt->last_level; level++)
i915_texture_set_level_info(tex, level, 6);
for (face = 0; face < 6; face++) {
- unsigned x = initial_offsets[face][0] * nblocks;
- unsigned y = initial_offsets[face][1] * nblocks;
- unsigned d = nblocks;
+ /* all calculations in pixels */
+ unsigned total_height = tex->total_nblocksy * 4;
+ unsigned x = initial_offsets[face][0] * dim;
+ unsigned y = initial_offsets[face][1] * dim;
+ unsigned d = dim;
-#if 0 /* Fix and enable this code for compressed formats */
- if (nblocks == 4 && face >= 4) {
- y = tex->total_height - 4;
+ if (dim == 4 && face >= 4) {
x = (face - 4) * 8;
- }
- else if (nblocks < 4 && (face > 0)) {
- y = tex->total_height - 4;
+ y = tex->total_nblocksy * 4 - 4; /* 4 = 1 block */
+ } else if (dim < 4 && (face > 0)) {
x = face * 8;
+ y = total_height - 4;
}
-#endif
for (level = 0; level <= pt->last_level; level++) {
- i915_texture_set_image_offset(tex, level, face, x, y);
+ i915_texture_set_image_offset(tex, level, face,
+ util_format_get_nblocksx(pt->format, x),
+ util_format_get_nblocksy(pt->format, 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
+ 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;
-#if 0
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 = total_height - 4;
+ x = (face - 4) * 8;
+ break;
+ }
+ break;
+ case 2:
+ y = total_height - 4;
+ x = bottom_offsets[face];
+ break;
+ case 1:
+ x += 48;
+ break;
+ default:
+ x += step_offsets[face][0] * d;
+ y += step_offsets[face][1] * d;
+ break;
}
-#endif
}
}
}
i945_texture_layout_3d(tex);
break;
case PIPE_TEXTURE_CUBE:
- i945_texture_layout_cube(tex);
+ if (!util_format_is_s3tc(pt->format))
+ i9x5_texture_layout_cube(tex);
+ else
+ i945_texture_layout_cube(tex);
break;
default:
assert(0);
projects / mesa.git / commitdiff