diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_wm_emit.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm_emit.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_emit.c b/src/mesa/drivers/dri/i965/brw_wm_emit.c index 6bafa44b82..df51f73dd8 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_emit.c +++ b/src/mesa/drivers/dri/i965/brw_wm_emit.c @@ -122,26 +122,30 @@ static void emit_delta_xy(struct brw_compile *p, } } -static void emit_wpos_xy(struct brw_compile *p, - const struct brw_reg *dst, - GLuint mask, - const struct brw_reg *arg0) +static void emit_wpos_xy(struct brw_wm_compile *c, + const struct brw_reg *dst, + GLuint mask, + const struct brw_reg *arg0) { - /* Calc delta X,Y by subtracting origin in r1 from the pixel - * centers. + struct brw_compile *p = &c->func; + + /* Calculate the pixel offset from window bottom left into destination + * X and Y channels. */ if (mask & WRITEMASK_X) { - brw_MOV(p, + /* X' = X - origin */ + brw_ADD(p, dst[0], - retype(arg0[0], BRW_REGISTER_TYPE_UW)); + retype(arg0[0], BRW_REGISTER_TYPE_W), + brw_imm_d(- c->key.origin_x)); } if (mask & WRITEMASK_Y) { - /* TODO -- window_height - Y */ - brw_MOV(p, + /* Y' = height - (Y - origin_y) = height + origin_y - Y */ + brw_ADD(p, dst[1], - negate(retype(arg0[1], BRW_REGISTER_TYPE_UW))); - + negate(retype(arg0[1], BRW_REGISTER_TYPE_W)), + brw_imm_d(c->key.origin_y + c->key.drawable_height)); } } @@ -1114,7 +1118,7 @@ void brw_wm_emit( struct brw_wm_compile *c ) break; case WM_WPOSXY: - emit_wpos_xy(p, dst, dst_flags, args[0]); + emit_wpos_xy(c, dst, dst_flags, args[0]); break; case WM_PIXELW: |