diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_format.c')
-rw-r--r-- | src/gallium/auxiliary/util/u_format.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_format.c b/src/gallium/auxiliary/util/u_format.c index 4896faa..9cbdd0a 100644 --- a/src/gallium/auxiliary/util/u_format.c +++ b/src/gallium/auxiliary/util/u_format.c @@ -36,6 +36,55 @@ #include "u_memory.h" #include "u_rect.h" #include "u_format.h" +#include "u_format_s3tc.h" + +#include "pipe/p_defines.h" + + +boolean +util_format_is_float(enum pipe_format format) +{ + const struct util_format_description *desc = util_format_description(format); + unsigned i; + + assert(desc); + if (!desc) { + return FALSE; + } + + /* Find the first non-void channel. */ + for (i = 0; i < 4; i++) { + if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) { + break; + } + } + + if (i == 4) { + return FALSE; + } + + return desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT ? TRUE : FALSE; +} + + +boolean +util_format_is_supported(enum pipe_format format, unsigned bind) +{ + if (util_format_is_s3tc(format) && !util_format_s3tc_enabled) { + return FALSE; + } + +#ifndef TEXTURE_FLOAT_ENABLED + if ((bind & PIPE_BIND_RENDER_TARGET) && + format != PIPE_FORMAT_R9G9B9E5_FLOAT && + format != PIPE_FORMAT_R11G11B10_FLOAT && + util_format_is_float(format)) { + return FALSE; + } +#endif + + return TRUE; +} void |