#include "i915_debug.h"
#include "i915_screen.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}
+};
static unsigned minify( unsigned d )
{
return MAX2(1, d>>1);
}
+static unsigned
+power_of_two(unsigned x)
+{
+ unsigned value = 1;
+ while (value <= x)
+ value = value << 1;
+ return value;
+}
+
+static unsigned
+round_up(unsigned n, unsigned multiple)
+{
+ return (n + multiple - 1) & ~(multiple - 1);
+}
+
+
+/*
+ * More advanced helper funcs
+ */
static void
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)
assert(img < tex->nr_images[level]);
tex->image_offset[level][img] = (x + y * tex->pitch);
-
/*
- DBG("%s level %d img %d pos %d,%d image_offset %x\n",
+ printf("%s level %d img %d pos %d,%d image_offset %x\n",
__FUNCTION__, level, img, x, y, tex->image_offset[level][img]);
*/
}
-static unsigned
-power_of_two(unsigned x)
-{
- unsigned value = 1;
- while (value <= x)
- value = value << 1;
- return value;
-}
-static unsigned
-round_up(unsigned n, unsigned multiple)
-{
- return (n + multiple - 1) & ~(multiple - 1);
-}
+/*
+ * Layout functions
+ */
+
/**
* Special case to deal with display targets.
tex->total_height = tex->base.height[0];
}
-/*
+ /*
printf("%s size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
tex->base.width[0], tex->base.height[0], pt->cpp,
tex->pitch, tex->total_height, tex->pitch * tex->total_height * 4);
-*/
+ */
return 1;
}
}
}
+static void
+i945_miptree_layout_cube(struct i915_texture *tex)
+{
+ struct pipe_texture *pt = &tex->base;
+ unsigned level;
-static const int initial_offsets[6][2] = {
- {0, 0},
- {0, 2},
- {1, 0},
- {1, 2},
- {1, 1},
- {1, 3}
-};
+ const unsigned dim = pt->width[0];
+ unsigned face;
+ unsigned lvlWidth = pt->width[0], lvlHeight = pt->height[0];
-static const int step_offsets[6][2] = {
- {0, 2},
- {0, 2},
- {-1, 2},
- {-1, 2},
- {-1, 1},
- {-1, 1}
-};
+ assert(lvlWidth == lvlHeight); /* cubemap images are square */
+
+ /* 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 (dim > 32)
+ tex->pitch = ((dim * pt->cpp * 2 + 3) & ~3) / pt->cpp;
+ else
+ tex->pitch = 14 * 8;
+
+ tex->total_height = dim * 4 + 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, 0, 0, lvlWidth, lvlHeight, 1);
+ lvlWidth /= 2;
+ lvlHeight /= 2;
+ }
+ for (face = 0; face < 6; face++) {
+ unsigned x = initial_offsets[face][0] * dim;
+ unsigned y = initial_offsets[face][1] * dim;
+ unsigned d = dim;
+
+ if (dim == 4 && face >= 4) {
+ y = tex->total_height - 4;
+ x = (face - 4) * 8;
+ }
+ else if (dim < 4 && (face > 0)) {
+ y = tex->total_height - 4;
+ x = face * 8;
+ }
+
+ for (level = 0; level <= pt->last_level; level++) {
+ i915_miptree_set_image_offset(tex, level, face, x, y);
+
+ d >>= 1;
+
+ 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:
+ x += step_offsets[face][0] * d;
+ y += step_offsets[face][1] * d;
+ break;
+ }
+ }
+ }
+}
static boolean
i915_miptree_layout(struct i915_texture * tex)
unsigned level;
switch (pt->target) {
- case PIPE_TEXTURE_CUBE:{
- const unsigned dim = pt->width[0];
- unsigned face;
- unsigned lvlWidth = pt->width[0], lvlHeight = pt->height[0];
-
- assert(lvlWidth == lvlHeight); /* cubemap images are square */
-
- /* 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 (dim > 32)
- tex->pitch = ((dim * pt->cpp * 2 + 3) & ~3) / pt->cpp;
- else
- tex->pitch = 14 * 8;
-
- tex->total_height = dim * 4 + 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,
- 0, 0,
- lvlWidth, lvlHeight, 1);
- lvlWidth /= 2;
- lvlHeight /= 2;
- }
-
-
- for (face = 0; face < 6; face++) {
- unsigned x = initial_offsets[face][0] * dim;
- unsigned y = initial_offsets[face][1] * dim;
- unsigned d = dim;
-
- if (dim == 4 && face >= 4) {
- y = tex->total_height - 4;
- x = (face - 4) * 8;
- }
- else if (dim < 4 && (face > 0)) {
- y = tex->total_height - 4;
- x = face * 8;
- }
-
- for (level = 0; level <= pt->last_level; level++) {
- i915_miptree_set_image_offset(tex, level, face, x, y);
-
- d >>= 1;
-
- 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:
- x += step_offsets[face][0] * d;
- y += step_offsets[face][1] * d;
- break;
- }
- }
- }
- break;
- }
+ case PIPE_TEXTURE_CUBE:
+ i945_miptree_layout_cube(tex);
+ break;
case PIPE_TEXTURE_3D:{
unsigned width = pt->width[0];
unsigned height = pt->height[0];
unsigned depth = pt->depth[0];
unsigned pack_x_pitch, pack_x_nr;
unsigned pack_y_pitch;
- unsigned level;
tex->pitch = ((pt->width[0] * pt->cpp + 3) & ~3) / pt->cpp;
tex->total_height = 0;
*pt = NULL;
}
-
-
-/*
- * XXX note: same as code in sp_surface.c
- */
static struct pipe_surface *
i915_get_tex_surface(struct pipe_screen *screen,
struct pipe_texture *pt,
assert(zslice == 0);
}
- ps = CALLOC_STRUCT(pipe_surface);//ws->surface_alloc(ws);
+ ps = CALLOC_STRUCT(pipe_surface);
if (ps) {
ps->refcount = 1;
ps->winsys = ws;
return ps;
}
-
void
i915_init_texture_functions(struct i915_context *i915)
{
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