diff options
author | Jouk <joukj@tarantella.nano.tudelft.nl> | 2007-10-02 15:17:23 +0200 |
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committer | Jouk <joukj@tarantella.nano.tudelft.nl> | 2007-10-02 15:17:23 +0200 |
commit | 584b84256b07e106cd7295495355eb21226465d7 (patch) | |
tree | 028d47d265d01f3f96787792fbd41d495d60856c /src/mesa/drivers/dri/i915/i915_tex_layout.c | |
parent | eb9a5b6d5127858b01ec12672c999e7d25cd7aed (diff) | |
parent | de1d725f442caa4d8ecbac3256b5a33d1f4a1257 (diff) |
Merge branch 'master' of git+ssh://joukj@git.freedesktop.org/git/mesa/mesa
Diffstat (limited to 'src/mesa/drivers/dri/i915/i915_tex_layout.c')
-rw-r--r-- | src/mesa/drivers/dri/i915/i915_tex_layout.c | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915/i915_tex_layout.c b/src/mesa/drivers/dri/i915/i915_tex_layout.c new file mode 100644 index 0000000000..7b761a7b22 --- /dev/null +++ b/src/mesa/drivers/dri/i915/i915_tex_layout.c @@ -0,0 +1,343 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +/* Code to layout images in a mipmap tree for i915 and i945 + * respectively. + */ + +#include "intel_mipmap_tree.h" +#include "intel_tex_layout.h" +#include "macros.h" +#include "intel_context.h" + +#define FILE_DEBUG_FLAG DEBUG_TEXTURE + +static GLint initial_offsets[6][2] = { {0, 0}, +{0, 2}, +{1, 0}, +{1, 2}, +{1, 1}, +{1, 3} +}; + + +static GLint step_offsets[6][2] = { {0, 2}, +{0, 2}, +{-1, 2}, +{-1, 2}, +{-1, 1}, +{-1, 1} +}; + +GLboolean +i915_miptree_layout(struct intel_mipmap_tree * mt) +{ + GLint level; + + switch (mt->target) { + case GL_TEXTURE_CUBE_MAP:{ + const GLuint dim = mt->width0; + GLuint face; + GLuint lvlWidth = mt->width0, lvlHeight = mt->height0; + + assert(lvlWidth == lvlHeight); /* cubemap images are square */ + + /* double pitch for cube layouts */ + mt->pitch = ((dim * mt->cpp * 2 + 3) & ~3) / mt->cpp; + mt->total_height = dim * 4; + + for (level = mt->first_level; level <= mt->last_level; level++) { + intel_miptree_set_level_info(mt, level, 6, + 0, 0, + /*OLD: mt->pitch, mt->total_height,*/ + lvlWidth, lvlHeight, + 1); + lvlWidth /= 2; + lvlHeight /= 2; + } + + for (face = 0; face < 6; face++) { + GLuint x = initial_offsets[face][0] * dim; + GLuint y = initial_offsets[face][1] * dim; + GLuint d = dim; + + for (level = mt->first_level; level <= mt->last_level; level++) { + intel_miptree_set_image_offset(mt, level, face, x, y); + + if (d == 0) + _mesa_printf("cube mipmap %d/%d (%d..%d) is 0x0\n", + face, level, mt->first_level, mt->last_level); + + d >>= 1; + x += step_offsets[face][0] * d; + y += step_offsets[face][1] * d; + } + } + break; + } + case GL_TEXTURE_3D:{ + GLuint width = mt->width0; + GLuint height = mt->height0; + GLuint depth = mt->depth0; + GLuint stack_height = 0; + + /* Calculate the size of a single slice. + */ + mt->pitch = ((mt->width0 * mt->cpp + 3) & ~3) / mt->cpp; + + /* XXX: hardware expects/requires 9 levels at minimum. + */ + for (level = mt->first_level; level <= MAX2(8, mt->last_level); + level++) { + intel_miptree_set_level_info(mt, level, depth, 0, mt->total_height, + width, height, depth); + + + stack_height += MAX2(2, height); + + width = minify(width); + height = minify(height); + depth = minify(depth); + } + + /* Fixup depth image_offsets: + */ + depth = mt->depth0; + for (level = mt->first_level; level <= mt->last_level; level++) { + GLuint i; + for (i = 0; i < depth; i++) + intel_miptree_set_image_offset(mt, level, i, + 0, i * stack_height); + + depth = minify(depth); + } + + + /* 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. + */ + mt->total_height = stack_height * mt->depth0; + break; + } + + default:{ + GLuint width = mt->width0; + GLuint height = mt->height0; + GLuint img_height; + + mt->pitch = ((mt->width0 * mt->cpp + 3) & ~3) / mt->cpp; + mt->total_height = 0; + + for (level = mt->first_level; level <= mt->last_level; level++) { + intel_miptree_set_level_info(mt, level, 1, + 0, mt->total_height, + width, height, 1); + + if (mt->compressed) + img_height = MAX2(1, height / 4); + else + img_height = (MAX2(2, height) + 1) & ~1; + + mt->total_height += img_height; + + width = minify(width); + height = minify(height); + } + break; + } + } + DBG("%s: %dx%dx%d - sz 0x%x\n", __FUNCTION__, + mt->pitch, + mt->total_height, mt->cpp, mt->pitch * mt->total_height * mt->cpp); + + return GL_TRUE; +} + + +GLboolean +i945_miptree_layout(struct intel_mipmap_tree * mt) +{ + GLint level; + + switch (mt->target) { + case GL_TEXTURE_CUBE_MAP:{ + const GLuint dim = mt->width0; + GLuint face; + GLuint lvlWidth = mt->width0, lvlHeight = mt->height0; + + 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) + mt->pitch = ((dim * mt->cpp * 2 + 3) & ~3) / mt->cpp; + else + mt->pitch = 14 * 8; + + mt->total_height = dim * 4 + 4; + + /* Set all the levels to effectively occupy the whole rectangular region. + */ + for (level = mt->first_level; level <= mt->last_level; level++) { + intel_miptree_set_level_info(mt, level, 6, + 0, 0, + lvlWidth, lvlHeight, 1); + lvlWidth /= 2; + lvlHeight /= 2; + } + + + for (face = 0; face < 6; face++) { + GLuint x = initial_offsets[face][0] * dim; + GLuint y = initial_offsets[face][1] * dim; + GLuint d = dim; + + if (dim == 4 && face >= 4) { + y = mt->total_height - 4; + x = (face - 4) * 8; + } + else if (dim < 4 && (face > 0 || mt->first_level > 0)) { + y = mt->total_height - 4; + x = face * 8; + } + + for (level = mt->first_level; level <= mt->last_level; level++) { + intel_miptree_set_image_offset(mt, level, face, x, y); + + d >>= 1; + + switch (d) { + case 4: + switch (face) { + case FACE_POS_X: + case FACE_NEG_X: + x += step_offsets[face][0] * d; + y += step_offsets[face][1] * d; + break; + case FACE_POS_Y: + case FACE_NEG_Y: + y += 12; + x -= 8; + break; + case FACE_POS_Z: + case FACE_NEG_Z: + y = mt->total_height - 4; + x = (face - 4) * 8; + break; + } + + case 2: + y = mt->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 GL_TEXTURE_3D:{ + GLuint width = mt->width0; + GLuint height = mt->height0; + GLuint depth = mt->depth0; + GLuint pack_x_pitch, pack_x_nr; + GLuint pack_y_pitch; + GLuint level; + + mt->pitch = ((mt->width0 * mt->cpp + 3) & ~3) / mt->cpp; + mt->total_height = 0; + + pack_y_pitch = MAX2(mt->height0, 2); + pack_x_pitch = mt->pitch; + pack_x_nr = 1; + + for (level = mt->first_level; level <= mt->last_level; level++) { + GLuint nr_images = mt->target == GL_TEXTURE_3D ? depth : 6; + GLint x = 0; + GLint y = 0; + GLint q, j; + + intel_miptree_set_level_info(mt, level, nr_images, + 0, mt->total_height, + width, height, depth); + + for (q = 0; q < nr_images;) { + for (j = 0; j < pack_x_nr && q < nr_images; j++, q++) { + intel_miptree_set_image_offset(mt, level, q, x, y); + x += pack_x_pitch; + } + + x = 0; + y += pack_y_pitch; + } + + + mt->total_height += y; + + if (pack_x_pitch > 4) { + pack_x_pitch >>= 1; + pack_x_nr <<= 1; + assert(pack_x_pitch * pack_x_nr <= mt->pitch); + } + + if (pack_y_pitch > 2) { + pack_y_pitch >>= 1; + } + + width = minify(width); + height = minify(height); + depth = minify(depth); + } + break; + } + + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_TEXTURE_RECTANGLE_ARB: + i945_miptree_layout_2d(mt); + break; + default: + _mesa_problem(NULL, "Unexpected tex target in i945_miptree_layout()"); + } + + DBG("%s: %dx%dx%d - sz 0x%x\n", __FUNCTION__, + mt->pitch, + mt->total_height, mt->cpp, mt->pitch * mt->total_height * mt->cpp); + + return GL_TRUE; +} |