diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_screen_texture.c')
| -rw-r--r-- | src/gallium/drivers/i965/brw_screen_texture.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_screen_texture.c b/src/gallium/drivers/i965/brw_screen_texture.c new file mode 100644 index 0000000000..50c30878c6 --- /dev/null +++ b/src/gallium/drivers/i965/brw_screen_texture.c @@ -0,0 +1,218 @@ +/* + Copyright (C) Intel Corp. 2006. All Rights Reserved. + Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to + develop this 3D driver. + + 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, sublicense, 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 NONINFRINGEMENT. + IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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. + + **********************************************************************/ + /* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +/* Code to layout images in a mipmap tree for i965. + */ + +#include "brw_tex_layout.h" + +#define FILE_DEBUG_FLAG DEBUG_MIPTREE + +GLboolean brw_miptree_layout(struct brw_context *brw, + struct intel_mipmap_tree *mt, + uint32_t tiling) +{ + /* XXX: these vary depending on image format: */ + /* GLint align_w = 4; */ + + switch (mt->target) { + case GL_TEXTURE_CUBE_MAP: + if (IS_IGDNG(brw->brw_screen->pci_id)) { + GLuint align_h = 2, align_w = 4; + GLuint level; + GLuint x = 0; + GLuint y = 0; + GLuint width = mt->width0; + GLuint height = mt->height0; + GLuint qpitch = 0; + GLuint y_pitch = 0; + + mt->pitch = mt->width0; + intel_get_texture_alignment_unit(mt->internal_format, &align_w, &align_h); + y_pitch = ALIGN(height, align_h); + + if (mt->compressed) { + mt->pitch = ALIGN(mt->width0, align_w); + } + + if (mt->last_level != 0) { + GLuint mip1_width; + + if (mt->compressed) { + mip1_width = ALIGN(minify(mt->width0), align_w) + + ALIGN(minify(minify(mt->width0)), align_w); + } else { + mip1_width = ALIGN(minify(mt->width0), align_w) + + minify(minify(mt->width0)); + } + + if (mip1_width > mt->pitch) { + mt->pitch = mip1_width; + } + } + + mt->pitch = intel_miptree_pitch_align(intel, mt, tiling, mt->pitch); + + if (mt->compressed) { + qpitch = (y_pitch + ALIGN(minify(y_pitch), align_h) + 11 * align_h) / 4 * mt->pitch * mt->cpp; + mt->total_height = (y_pitch + ALIGN(minify(y_pitch), align_h) + 11 * align_h) / 4 * 6; + } else { + qpitch = (y_pitch + ALIGN(minify(y_pitch), align_h) + 11 * align_h) * mt->pitch * mt->cpp; + mt->total_height = (y_pitch + ALIGN(minify(y_pitch), align_h) + 11 * align_h) * 6; + } + + for (level = 0; level <= mt->last_level; level++) { + GLuint img_height; + GLuint nr_images = 6; + GLuint q = 0; + + intel_miptree_set_level_info(mt, level, nr_images, x, y, width, + height, 1); + + for (q = 0; q < nr_images; q++) + intel_miptree_set_image_offset_ex(mt, level, q, x, y, q * qpitch); + + if (mt->compressed) + img_height = MAX2(1, height/4); + else + img_height = ALIGN(height, align_h); + + if (level == 1) { + x += ALIGN(width, align_w); + } + else { + y += img_height; + } + + width = minify(width); + height = minify(height); + } + + 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; + GLuint align_h = 2; + GLuint align_w = 4; + + mt->total_height = 0; + intel_get_texture_alignment_unit(mt->internal_format, &align_w, &align_h); + + if (mt->compressed) { + mt->pitch = ALIGN(width, align_w); + pack_y_pitch = (height + 3) / 4; + } else { + mt->pitch = intel_miptree_pitch_align (intel, mt, tiling, mt->width0); + pack_y_pitch = ALIGN(mt->height0, align_h); + } + + pack_x_pitch = width; + pack_x_nr = 1; + + for (level = 0 ; 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; + width = minify(width); + height = minify(height); + depth = minify(depth); + + if (mt->compressed) { + pack_y_pitch = (height + 3) / 4; + + if (pack_x_pitch > ALIGN(width, align_w)) { + pack_x_pitch = ALIGN(width, align_w); + pack_x_nr <<= 1; + } + } else { + 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; + pack_y_pitch = ALIGN(pack_y_pitch, align_h); + } + } + + } + /* The 965's sampler lays cachelines out according to how accesses + * in the texture surfaces run, so they may be "vertical" through + * memory. As a result, the docs say in Surface Padding Requirements: + * Sampling Engine Surfaces that two extra rows of padding are required. + * We don't know of similar requirements for pre-965, but given that + * those docs are silent on padding requirements in general, let's play + * it safe. + */ + if (mt->target == GL_TEXTURE_CUBE_MAP) + mt->total_height += 2; + break; + } + + default: + i945_miptree_layout_2d(intel, mt, tiling); + 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; +} + |