diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-11-26 11:18:50 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-02-21 13:04:46 +0000 |
| commit | 298ebb78de8a6b6edf0aa0fe8d784d00bbc2930e (patch) | |
| tree | 591fa55ad4ee8974371ce7c932bda802d35bbfad /src/mesa/drivers/dri | |
| parent | 7c97e288fb6a105ea60c377aef4472cc33ca01bc (diff) | |
i915: Suppress emission of redundant stencil updates
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'src/mesa/drivers/dri')
| -rw-r--r-- | src/mesa/drivers/dri/i915/i915_state.c | 100 |
1 files changed, 55 insertions, 45 deletions
diff --git a/src/mesa/drivers/dri/i915/i915_state.c b/src/mesa/drivers/dri/i915/i915_state.c index ee49c303cd..93d344d9d4 100644 --- a/src/mesa/drivers/dri/i915/i915_state.c +++ b/src/mesa/drivers/dri/i915/i915_state.c @@ -56,8 +56,7 @@ i915_update_stencil(struct gl_context * ctx) GLenum front_func, front_fail, front_pass_z_fail, front_pass_z_pass; GLuint back_ref, back_writemask, back_mask; GLenum back_func, back_fail, back_pass_z_fail, back_pass_z_pass; - - I915_STATECHANGE(i915, I915_UPLOAD_CTX); + GLuint dirty = 0; /* The 915 considers CW to be "front" for two-sided stencil, so choose * appropriately. @@ -94,56 +93,67 @@ i915_update_stencil(struct gl_context * ctx) back_pass_z_fail = ctx->Stencil.ZFailFunc[0]; back_pass_z_pass = ctx->Stencil.ZPassFunc[0]; } +#define set_ctx_bits(reg, mask, set) do{ \ + GLuint dw = i915->state.Ctx[reg]; \ + dw &= ~(mask); \ + dw |= (set); \ + dirty |= dw != i915->state.Ctx[reg]; \ +} while(0) /* Set front state. */ - i915->state.Ctx[I915_CTXREG_STATE4] &= ~(MODE4_ENABLE_STENCIL_TEST_MASK | - MODE4_ENABLE_STENCIL_WRITE_MASK); - i915->state.Ctx[I915_CTXREG_STATE4] |= (ENABLE_STENCIL_TEST_MASK | - ENABLE_STENCIL_WRITE_MASK | - STENCIL_TEST_MASK(front_mask) | - STENCIL_WRITE_MASK(front_writemask)); - - i915->state.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_REF_MASK | - S5_STENCIL_TEST_FUNC_MASK | - S5_STENCIL_FAIL_MASK | - S5_STENCIL_PASS_Z_FAIL_MASK | - S5_STENCIL_PASS_Z_PASS_MASK); - - i915->state.Ctx[I915_CTXREG_LIS5] |= - (front_ref << S5_STENCIL_REF_SHIFT) | - (intel_translate_compare_func(front_func) << S5_STENCIL_TEST_FUNC_SHIFT) | - (intel_translate_stencil_op(front_fail) << S5_STENCIL_FAIL_SHIFT) | - (intel_translate_stencil_op(front_pass_z_fail) << - S5_STENCIL_PASS_Z_FAIL_SHIFT) | - (intel_translate_stencil_op(front_pass_z_pass) << - S5_STENCIL_PASS_Z_PASS_SHIFT); + set_ctx_bits(I915_CTXREG_STATE4, + MODE4_ENABLE_STENCIL_TEST_MASK | + MODE4_ENABLE_STENCIL_WRITE_MASK, + ENABLE_STENCIL_TEST_MASK | + ENABLE_STENCIL_WRITE_MASK | + STENCIL_TEST_MASK(front_mask) | + STENCIL_WRITE_MASK(front_writemask)); + + set_ctx_bits(I915_CTXREG_LIS5, + S5_STENCIL_REF_MASK | + S5_STENCIL_TEST_FUNC_MASK | + S5_STENCIL_FAIL_MASK | + S5_STENCIL_PASS_Z_FAIL_MASK | + S5_STENCIL_PASS_Z_PASS_MASK, + (front_ref << S5_STENCIL_REF_SHIFT) | + (intel_translate_compare_func(front_func) << S5_STENCIL_TEST_FUNC_SHIFT) | + (intel_translate_stencil_op(front_fail) << S5_STENCIL_FAIL_SHIFT) | + (intel_translate_stencil_op(front_pass_z_fail) << + S5_STENCIL_PASS_Z_FAIL_SHIFT) | + (intel_translate_stencil_op(front_pass_z_pass) << + S5_STENCIL_PASS_Z_PASS_SHIFT)); /* Set back state if different from front. */ if (ctx->Stencil._TestTwoSide) { - i915->state.Ctx[I915_CTXREG_BF_STENCIL_OPS] &= - ~(BFO_STENCIL_REF_MASK | - BFO_STENCIL_TEST_MASK | - BFO_STENCIL_FAIL_MASK | - BFO_STENCIL_PASS_Z_FAIL_MASK | - BFO_STENCIL_PASS_Z_PASS_MASK); - i915->state.Ctx[I915_CTXREG_BF_STENCIL_OPS] |= BFO_STENCIL_TWO_SIDE | - (back_ref << BFO_STENCIL_REF_SHIFT) | - (intel_translate_compare_func(back_func) << BFO_STENCIL_TEST_SHIFT) | - (intel_translate_stencil_op(back_fail) << BFO_STENCIL_FAIL_SHIFT) | - (intel_translate_stencil_op(back_pass_z_fail) << - BFO_STENCIL_PASS_Z_FAIL_SHIFT) | - (intel_translate_stencil_op(back_pass_z_pass) << - BFO_STENCIL_PASS_Z_PASS_SHIFT); - - i915->state.Ctx[I915_CTXREG_BF_STENCIL_MASKS] &= - ~(BFM_STENCIL_TEST_MASK_MASK | - BFM_STENCIL_WRITE_MASK_MASK); - i915->state.Ctx[I915_CTXREG_BF_STENCIL_MASKS] |= - BFM_STENCIL_TEST_MASK(back_mask) | - BFM_STENCIL_WRITE_MASK(back_writemask); + set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS, + BFO_STENCIL_REF_MASK | + BFO_STENCIL_TEST_MASK | + BFO_STENCIL_FAIL_MASK | + BFO_STENCIL_PASS_Z_FAIL_MASK | + BFO_STENCIL_PASS_Z_PASS_MASK, + BFO_STENCIL_TWO_SIDE | + (back_ref << BFO_STENCIL_REF_SHIFT) | + (intel_translate_compare_func(back_func) << BFO_STENCIL_TEST_SHIFT) | + (intel_translate_stencil_op(back_fail) << BFO_STENCIL_FAIL_SHIFT) | + (intel_translate_stencil_op(back_pass_z_fail) << + BFO_STENCIL_PASS_Z_FAIL_SHIFT) | + (intel_translate_stencil_op(back_pass_z_pass) << + BFO_STENCIL_PASS_Z_PASS_SHIFT)); + + set_ctx_bits(I915_CTXREG_BF_STENCIL_MASKS, + BFM_STENCIL_TEST_MASK_MASK | + BFM_STENCIL_WRITE_MASK_MASK, + BFM_STENCIL_TEST_MASK(back_mask) | + BFM_STENCIL_WRITE_MASK(back_writemask)); } else { - i915->state.Ctx[I915_CTXREG_BF_STENCIL_OPS] &= ~BFO_STENCIL_TWO_SIDE; + set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS, + BFO_STENCIL_TWO_SIDE, 0); } + +#undef set_ctx_bits + + if (dirty) + I915_STATECHANGE(i915, I915_UPLOAD_CTX); } static void |