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gallium: Add utility helper for packing combined depth/stencil values.

This commit is contained in:
Michel Dänzer 2009-04-04 16:04:59 +02:00
parent b0ce915186
commit ba14b043bc
2 changed files with 23 additions and 13 deletions
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20
src/gallium/auxiliary/util/u_pack_color.h
View File

@ -440,6 +440,26 @@ util_pack_z(enum pipe_format format, double z)
return 0;
}
}
/**
* Note: it's assumed that z is in [0,1] and s in [0,255]
*/
static INLINE uint
util_pack_z_stencil(enum pipe_format format, double z, uint s)
{
switch (format) {
case PIPE_FORMAT_S8Z24_UNORM:
return util_pack_z(format, z) | s << 24;
case PIPE_FORMAT_Z24S8_UNORM:
return util_pack_z(format, z) | s;
default:
debug_print_format("gallium: unhandled format in util_pack_z_stencil()",
format);
assert(0);
return 0;
}
}
/**

16
src/mesa/state_tracker/st_cb_clear.c
View File

@ -460,19 +460,9 @@ clear_depth_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
}
else {
/* clear whole buffer w/out masking */
GLuint clearValue = util_pack_z(strb->surface->format, ctx->Depth.Clear);
switch (strb->surface->format) {
case PIPE_FORMAT_S8Z24_UNORM:
clearValue |= ctx->Stencil.Clear << 24;
break;
case PIPE_FORMAT_Z24S8_UNORM:
clearValue |= ctx->Stencil.Clear;
break;
default:
assert(0);
}
GLuint clearValue = util_pack_z_stencil(strb->surface->format,
ctx->Depth.Clear,
ctx->Stencil.Clear);
ctx->st->pipe->clear(ctx->st->pipe, strb->surface, clearValue);
}
}