diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_wm_fp.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm_fp.c | 61 |
1 files changed, 34 insertions, 27 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_fp.c b/src/mesa/drivers/dri/i965/brw_wm_fp.c index b9e8dd2e96e..606baab9675 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_fp.c +++ b/src/mesa/drivers/dri/i965/brw_wm_fp.c @@ -376,14 +376,6 @@ static void emit_interp( struct brw_wm_compile *c, } break; case FRAG_ATTRIB_FOGC: - /* The FOGC input is really special. When a program uses glFogFragCoord, - * the results returned are supposed to be (f,0,0,1). But for Mesa GLSL, - * the glFrontFacing and glPointCoord values are also stashed in FOGC. - * So, write the interpolated fog value to X, then either 0, 1, or the - * stashed values to Y, Z, W. Note that this means that - * glFogFragCoord.yzw can be wrong in those cases! - */ - /* Interpolate the fog coordinate */ emit_op(c, WM_PINTERP, @@ -393,26 +385,40 @@ static void emit_interp( struct brw_wm_compile *c, deltas, get_pixel_w(c)); - /* Move the front facing value into FOGC.y if it's needed. */ - if (c->fp->program.UsesFrontFacing) { - emit_op(c, - WM_FRONTFACING, - dst_mask(dst, WRITEMASK_Y), - 0, - src_undef(), - src_undef(), - src_undef()); - } else { - emit_op(c, - OPCODE_MOV, - dst_mask(dst, WRITEMASK_Y), - 0, - src_swizzle1(interp, SWIZZLE_ZERO), - src_undef(), - src_undef()); - } + emit_op(c, + OPCODE_MOV, + dst_mask(dst, WRITEMASK_YZW), + 0, + src_swizzle(interp, + SWIZZLE_ZERO, + SWIZZLE_ZERO, + SWIZZLE_ZERO, + SWIZZLE_ONE), + src_undef(), + src_undef()); + break; + + case FRAG_ATTRIB_FACE: + /* XXX review/test this case */ + emit_op(c, + WM_FRONTFACING, + dst_mask(dst, WRITEMASK_X), + 0, + src_undef(), + src_undef(), + src_undef()); + break; + + case FRAG_ATTRIB_PNTC: + /* XXX review/test this case */ + emit_op(c, + WM_PINTERP, + dst_mask(dst, WRITEMASK_XY), + 0, + interp, + deltas, + get_pixel_w(c)); - /* Should do the PointCoord thing here. */ emit_op(c, OPCODE_MOV, dst_mask(dst, WRITEMASK_ZW), @@ -425,6 +431,7 @@ static void emit_interp( struct brw_wm_compile *c, src_undef(), src_undef()); break; + default: emit_op(c, WM_PINTERP, |