diff options
Diffstat (limited to 'src/mesa/drivers/dri')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_blorp_blit.cpp | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp index 9eeb89dbbbe..2e69e96d8ab 100644 --- a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp +++ b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp @@ -1506,6 +1506,9 @@ brw_blorp_blit_program::manual_blend_bilinear(unsigned num_samples) * --------- --------- * | 6 | 7 | | 7 | 1 | * --------- --------- + * + * Fortunately, this can be done fairly easily as: + * S' = (0x17306425 >> (S * 4)) & 0xf */ emit_frc(vec16(t1_f), x_sample_coords); emit_frc(vec16(t2_f), y_sample_coords); @@ -1515,23 +1518,10 @@ brw_blorp_blit_program::manual_blend_bilinear(unsigned num_samples) emit_mov(vec16(S), t1_f); if (num_samples == 8) { - /* Map the sample index to a sample number */ - emit_cmp_if(BRW_CONDITIONAL_L, S, brw_imm_d(4)); - { - emit_mov(vec16(t2), brw_imm_d(5)); - emit_if_eq_mov(S, 1, vec16(t2), 2); - emit_if_eq_mov(S, 2, vec16(t2), 4); - emit_if_eq_mov(S, 3, vec16(t2), 6); - } - emit_else(); - { - emit_mov(vec16(t2), brw_imm_d(0)); - emit_if_eq_mov(S, 5, vec16(t2), 3); - emit_if_eq_mov(S, 6, vec16(t2), 7); - emit_if_eq_mov(S, 7, vec16(t2), 1); - } - emit_endif(); - emit_mov(vec16(S), t2); + emit_mov(vec16(t2), brw_imm_d(0x17306425)); + emit_shl(vec16(S), S, brw_imm_d(2)); + emit_shr(vec16(S), t2, S); + emit_and(vec16(S), S, brw_imm_d(0xf)); } texel_fetch(texture_data[i]); } |