diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_tex_layout.c')
| -rw-r--r-- | src/mesa/drivers/dri/intel/intel_tex_layout.c | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_tex_layout.c b/src/mesa/drivers/dri/intel/intel_tex_layout.c index fcb5cc3906..fdecd3e186 100644 --- a/src/mesa/drivers/dri/intel/intel_tex_layout.c +++ b/src/mesa/drivers/dri/intel/intel_tex_layout.c @@ -40,6 +40,23 @@ static int align(int value, int alignment) return (value + alignment - 1) & ~(alignment - 1); } +GLuint intel_compressed_alignment(GLenum internalFormat) +{ + GLuint alignment = 4; + + switch (internalFormat) { + case GL_COMPRESSED_RGB_FXT1_3DFX: + case GL_COMPRESSED_RGBA_FXT1_3DFX: + alignment = 8; + break; + + default: + break; + } + + return alignment; +} + void i945_miptree_layout_2d( struct intel_mipmap_tree *mt ) { GLint align_h = 2, align_w = 4; @@ -51,17 +68,30 @@ void i945_miptree_layout_2d( struct intel_mipmap_tree *mt ) mt->pitch = mt->width0; + if (mt->compressed) { + align_w = intel_compressed_alignment(mt->internal_format); + mt->pitch = align(mt->width0, align_w); + } + /* May need to adjust pitch to accomodate the placement of * the 2nd mipmap. This occurs when the alignment * constraints of mipmap placement push the right edge of the * 2nd mipmap out past the width of its parent. */ if (mt->first_level != mt->last_level) { - GLuint mip1_width = align(minify(mt->width0), align_w) - + minify(minify(mt->width0)); + 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->width0) - mt->pitch = mip1_width; + if (mip1_width > mt->pitch) { + mt->pitch = mip1_width; + } } /* Pitch must be a whole number of dwords, even though we |