diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/state_tracker/st_format.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c index fa5d8f5050a..3260297c6c1 100644 --- a/src/mesa/state_tracker/st_format.c +++ b/src/mesa/state_tracker/st_format.c @@ -68,10 +68,18 @@ GLenum st_format_datatype(enum pipe_format format) { const struct util_format_description *desc; + int i; desc = util_format_description(format); assert(desc); + /* Find the first non-VOID channel. */ + for (i = 0; i < 4; i++) { + if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) { + break; + } + } + if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) { if (format == PIPE_FORMAT_B5G5R5A1_UNORM || format == PIPE_FORMAT_B5G6R5_UNORM) { @@ -85,21 +93,26 @@ st_format_datatype(enum pipe_format format) } else { const GLuint size = format_max_bits(format); + + assert(i < 4); + if (i == 4) + return GL_NONE; + if (size == 8) { - if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) + if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) return GL_UNSIGNED_BYTE; else return GL_BYTE; } else if (size == 16) { - if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) + if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) return GL_UNSIGNED_SHORT; else return GL_SHORT; } else { assert( size <= 32 ); - if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) + if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) return GL_UNSIGNED_INT; else return GL_INT; |