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Add inline funtion to comput format size based on code in st_format.c.

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Including state_tracker/st_format.h from pipe drivers is not an option
since it uses GL* types and pipe/p_util.h will clash with main/imports.h.
This commit is contained in:
José Fonseca 2007-12-11 00:46:44 +00:00
parent 7d1894c655
commit 609538f57c
1 changed files with 47 additions and 0 deletions
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47
src/mesa/pipe/p_format.h
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@ -366,4 +366,51 @@ static INLINE char *pf_sprint_name( char *str, uint format )
return str;
}
static INLINE uint pf_get_component_bits( uint format, uint comp )
{
uint size;
if (pf_swizzle_x(format) == comp) {
size = pf_size_x(format);
}
else if (pf_swizzle_y(format) == comp) {
size = pf_size_y(format);
}
else if (pf_swizzle_z(format) == comp) {
size = pf_size_z(format);
}
else if (pf_swizzle_w(format) == comp) {
size = pf_size_w(format);
}
else {
size = 0;
}
return size << (pf_exp8(format) * 3);
}
static INLINE uint pf_get_bits( uint format )
{
if (pf_layout(format) == PIPE_FORMAT_LAYOUT_RGBAZS) {
return
pf_get_component_bits( format, PIPE_FORMAT_COMP_R ) +
pf_get_component_bits( format, PIPE_FORMAT_COMP_G ) +
pf_get_component_bits( format, PIPE_FORMAT_COMP_B ) +
pf_get_component_bits( format, PIPE_FORMAT_COMP_A ) +
pf_get_component_bits( format, PIPE_FORMAT_COMP_Z ) +
pf_get_component_bits( format, PIPE_FORMAT_COMP_S );
}
else {
assert( pf_layout(format) == PIPE_FORMAT_LAYOUT_YCBCR );
/* TODO */
assert( 0 );
return 0;
}
}
static INLINE uint pf_get_size( uint format ) {
assert(pf_get_bits(format) % 8 == 0);
return pf_get_bits(format) / 8;
}
#endif