diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/intel_blit.c | 36 |
1 files changed, 29 insertions, 7 deletions
diff --git a/src/mesa/drivers/dri/i965/intel_blit.c b/src/mesa/drivers/dri/i965/intel_blit.c index aae0d2502d7..059165e6dba 100644 --- a/src/mesa/drivers/dri/i965/intel_blit.c +++ b/src/mesa/drivers/dri/i965/intel_blit.c @@ -139,6 +139,31 @@ blt_pitch(struct intel_mipmap_tree *mt) return pitch; } +static bool +blt_compatible_formats(mesa_format src, mesa_format dst) +{ + /* The BLT doesn't handle sRGB conversion */ + assert(src == _mesa_get_srgb_format_linear(src)); + assert(dst == _mesa_get_srgb_format_linear(dst)); + + /* No swizzle or format conversions possible, except... */ + if (src == dst) + return true; + + /* ...we can either discard the alpha channel when going from A->X, + * or we can fill the alpha channel with 0xff when going from X->A + */ + if (src == MESA_FORMAT_B8G8R8A8_UNORM || src == MESA_FORMAT_B8G8R8X8_UNORM) + return (dst == MESA_FORMAT_B8G8R8A8_UNORM || + dst == MESA_FORMAT_B8G8R8X8_UNORM); + + if (src == MESA_FORMAT_R8G8B8A8_UNORM || src == MESA_FORMAT_R8G8B8X8_UNORM) + return (dst == MESA_FORMAT_R8G8B8A8_UNORM || + dst == MESA_FORMAT_R8G8B8X8_UNORM); + + return false; +} + /** * Implements a rectangular block transfer (blit) of pixels between two * miptrees. @@ -181,11 +206,7 @@ intel_miptree_blit(struct brw_context *brw, * the X channel don't matter), and XRGB8888 to ARGB8888 by setting the A * channel to 1.0 at the end. */ - if (src_format != dst_format && - ((src_format != MESA_FORMAT_B8G8R8A8_UNORM && - src_format != MESA_FORMAT_B8G8R8X8_UNORM) || - (dst_format != MESA_FORMAT_B8G8R8A8_UNORM && - dst_format != MESA_FORMAT_B8G8R8X8_UNORM))) { + if (!blt_compatible_formats(src_format, dst_format)) { perf_debug("%s: Can't use hardware blitter from %s to %s, " "falling back.\n", __func__, _mesa_get_format_name(src_format), @@ -270,8 +291,9 @@ intel_miptree_blit(struct brw_context *brw, return false; } - if (src_mt->format == MESA_FORMAT_B8G8R8X8_UNORM && - dst_mt->format == MESA_FORMAT_B8G8R8A8_UNORM) { + /* XXX This could be done in a single pass using XY_FULL_MONO_PATTERN_BLT */ + if (_mesa_get_format_bits(src_format, GL_ALPHA_BITS) == 0 && + _mesa_get_format_bits(dst_format, GL_ALPHA_BITS) > 0) { intel_miptree_set_alpha_to_one(brw, dst_mt, dst_x, dst_y, width, height); |