i965: Port gen7+ 3DSTATE_PS to genxml.
[mesa.git] / src / mesa / drivers / dri / i965 / gen8_ps_state.c
index 3cc8c68e1322a3412f6f4300c8c82058dfb3ee19..581aa54c904da19b4f2fe9069f0ed6d1221dcc84 100644 (file)
@@ -30,9 +30,7 @@
 
 void
 gen8_upload_ps_extra(struct brw_context *brw,
-                     const struct gl_fragment_program *fp,
-                     const struct brw_wm_prog_data *prog_data,
-                     bool multisampled_fbo)
+                     const struct brw_wm_prog_data *prog_data)
 {
    struct gl_context *ctx = &brw->ctx;
    uint32_t dw1 = 0;
@@ -46,18 +44,28 @@ gen8_upload_ps_extra(struct brw_context *brw,
    if (prog_data->num_varying_inputs != 0)
       dw1 |= GEN8_PSX_ATTRIBUTE_ENABLE;
 
-   if (fp->Base.InputsRead & VARYING_BIT_POS)
-      dw1 |= GEN8_PSX_USES_SOURCE_DEPTH | GEN8_PSX_USES_SOURCE_W;
+   if (prog_data->uses_src_depth)
+      dw1 |= GEN8_PSX_USES_SOURCE_DEPTH;
 
-   if (multisampled_fbo &&
-       _mesa_get_min_invocations_per_fragment(ctx, fp, false) > 1)
+   if (prog_data->uses_src_w)
+      dw1 |= GEN8_PSX_USES_SOURCE_W;
+
+   if (prog_data->persample_dispatch)
       dw1 |= GEN8_PSX_SHADER_IS_PER_SAMPLE;
 
-   if (fp->Base.SystemValuesRead & SYSTEM_BIT_SAMPLE_MASK_IN) {
-      if (brw->gen >= 9)
-         dw1 |= BRW_PSICMS_INNER << GEN9_PSX_SHADER_NORMAL_COVERAGE_MASK_SHIFT;
-      else
+   /* _NEW_MULTISAMPLE | BRW_NEW_CONSERVATIVE_RASTERIZATION */
+   if (prog_data->uses_sample_mask) {
+      if (brw->gen >= 9) {
+         if (prog_data->post_depth_coverage)
+            dw1 |= BRW_PCICMS_DEPTH << GEN9_PSX_SHADER_NORMAL_COVERAGE_MASK_SHIFT;
+         else if (prog_data->inner_coverage && ctx->IntelConservativeRasterization)
+            dw1 |= BRW_PSICMS_INNER << GEN9_PSX_SHADER_NORMAL_COVERAGE_MASK_SHIFT;
+         else
+            dw1 |= BRW_PSICMS_NORMAL << GEN9_PSX_SHADER_NORMAL_COVERAGE_MASK_SHIFT;
+      }
+      else {
          dw1 |= GEN8_PSX_SHADER_USES_INPUT_COVERAGE_MASK;
+      }
    }
 
    if (prog_data->uses_omask)
@@ -88,9 +96,14 @@ gen8_upload_ps_extra(struct brw_context *brw,
     * GEN8_PSX_PIXEL_SHADER_NO_RT_WRITE is not set it shouldn't make any
     * difference so we may just disable it here.
     *
+    * Gen8 hardware tries to compute ThreadDispatchEnable for us but doesn't
+    * take into account KillPixels when no depth or stencil writes are enabled.
+    * In order for occlusion queries to work correctly with no attachments, we
+    * need to force-enable here.
+    *
     * BRW_NEW_FS_PROG_DATA | BRW_NEW_FRAGMENT_PROGRAM | _NEW_BUFFERS | _NEW_COLOR
     */
-   if (_mesa_active_fragment_shader_has_side_effects(&brw->ctx) &&
+   if ((prog_data->has_side_effects || prog_data->uses_kill) &&
        !brw_color_buffer_write_enabled(brw))
       dw1 |= GEN8_PSX_SHADER_HAS_UAV;
 
@@ -108,24 +121,18 @@ gen8_upload_ps_extra(struct brw_context *brw,
 static void
 upload_ps_extra(struct brw_context *brw)
 {
-   /* BRW_NEW_FRAGMENT_PROGRAM */
-   const struct brw_fragment_program *fp =
-      brw_fragment_program_const(brw->fragment_program);
    /* BRW_NEW_FS_PROG_DATA */
-   const struct brw_wm_prog_data *prog_data = brw->wm.prog_data;
-   /* BRW_NEW_NUM_SAMPLES */
-   const bool multisampled_fbo = brw->num_samples > 1;
-
-   gen8_upload_ps_extra(brw, &fp->program, prog_data, multisampled_fbo);
+   gen8_upload_ps_extra(brw, brw_wm_prog_data(brw->wm.base.prog_data));
 }
 
 const struct brw_tracked_state gen8_ps_extra = {
    .dirty = {
       .mesa  = _NEW_BUFFERS | _NEW_COLOR,
-      .brw   = BRW_NEW_CONTEXT |
+      .brw   = BRW_NEW_BLORP |
+               BRW_NEW_CONTEXT |
                BRW_NEW_FRAGMENT_PROGRAM |
                BRW_NEW_FS_PROG_DATA |
-               BRW_NEW_NUM_SAMPLES,
+               BRW_NEW_CONSERVATIVE_RASTERIZATION,
    },
    .emit = upload_ps_extra,
 };
@@ -136,6 +143,10 @@ upload_wm_state(struct brw_context *brw)
    struct gl_context *ctx = &brw->ctx;
    uint32_t dw1 = 0;
 
+   /* BRW_NEW_FS_PROG_DATA */
+   const struct brw_wm_prog_data *wm_prog_data =
+      brw_wm_prog_data(brw->wm.base.prog_data);
+
    dw1 |= GEN7_WM_STATISTICS_ENABLE;
    dw1 |= GEN7_WM_LINE_AA_WIDTH_1_0;
    dw1 |= GEN7_WM_LINE_END_CAP_AA_WIDTH_0_5;
@@ -149,14 +160,13 @@ upload_wm_state(struct brw_context *brw)
    if (ctx->Polygon.StippleFlag)
       dw1 |= GEN7_WM_POLYGON_STIPPLE_ENABLE;
 
-   /* BRW_NEW_FS_PROG_DATA */
-   dw1 |= brw->wm.prog_data->barycentric_interp_modes <<
+   dw1 |= wm_prog_data->barycentric_interp_modes <<
       GEN7_WM_BARYCENTRIC_INTERPOLATION_MODE_SHIFT;
 
    /* BRW_NEW_FS_PROG_DATA */
-   if (brw->wm.prog_data->early_fragment_tests)
+   if (wm_prog_data->early_fragment_tests)
       dw1 |= GEN7_WM_EARLY_DS_CONTROL_PREPS;
-   else if (brw->wm.prog_data->base.nr_image_params)
+   else if (wm_prog_data->has_side_effects)
       dw1 |= GEN7_WM_EARLY_DS_CONTROL_PSEXEC;
 
    BEGIN_BATCH(2);
@@ -169,143 +179,9 @@ const struct brw_tracked_state gen8_wm_state = {
    .dirty = {
       .mesa  = _NEW_LINE |
                _NEW_POLYGON,
-      .brw   = BRW_NEW_CONTEXT |
+      .brw   = BRW_NEW_BLORP |
+               BRW_NEW_CONTEXT |
                BRW_NEW_FS_PROG_DATA,
    },
    .emit = upload_wm_state,
 };
-
-void
-gen8_upload_ps_state(struct brw_context *brw,
-                     const struct gl_fragment_program *fp,
-                     const struct brw_stage_state *stage_state,
-                     const struct brw_wm_prog_data *prog_data,
-                     uint32_t fast_clear_op)
-{
-   struct gl_context *ctx = &brw->ctx;
-   uint32_t dw3 = 0, dw6 = 0, dw7 = 0, ksp0, ksp2 = 0;
-
-   /* Initialize the execution mask with VMask.  Otherwise, derivatives are
-    * incorrect for subspans where some of the pixels are unlit.  We believe
-    * the bit just didn't take effect in previous generations.
-    */
-   dw3 |= GEN7_PS_VECTOR_MASK_ENABLE;
-
-   const unsigned sampler_count =
-      DIV_ROUND_UP(CLAMP(stage_state->sampler_count, 0, 16), 4);
-   dw3 |= SET_FIELD(sampler_count, GEN7_PS_SAMPLER_COUNT);
-
-   /* BRW_NEW_FS_PROG_DATA */
-   dw3 |=
-      ((prog_data->base.binding_table.size_bytes / 4) <<
-       GEN7_PS_BINDING_TABLE_ENTRY_COUNT_SHIFT);
-
-   if (prog_data->base.use_alt_mode)
-      dw3 |= GEN7_PS_FLOATING_POINT_MODE_ALT;
-
-   /* 3DSTATE_PS expects the number of threads per PSD, which is always 64;
-    * it implicitly scales for different GT levels (which have some # of PSDs).
-    *
-    * In Gen8 the format is U8-2 whereas in Gen9 it is U8-1.
-    */
-   if (brw->gen >= 9)
-      dw6 |= (64 - 1) << HSW_PS_MAX_THREADS_SHIFT;
-   else
-      dw6 |= (64 - 2) << HSW_PS_MAX_THREADS_SHIFT;
-
-   if (prog_data->base.nr_params > 0)
-      dw6 |= GEN7_PS_PUSH_CONSTANT_ENABLE;
-
-   /* From the documentation for this packet:
-    * "If the PS kernel does not need the Position XY Offsets to
-    *  compute a Position Value, then this field should be programmed
-    *  to POSOFFSET_NONE."
-    *
-    * "SW Recommendation: If the PS kernel needs the Position Offsets
-    *  to compute a Position XY value, this field should match Position
-    *  ZW Interpolation Mode to ensure a consistent position.xyzw
-    *  computation."
-    *
-    * We only require XY sample offsets. So, this recommendation doesn't
-    * look useful at the moment. We might need this in future.
-    */
-   if (prog_data->uses_pos_offset)
-      dw6 |= GEN7_PS_POSOFFSET_SAMPLE;
-   else
-      dw6 |= GEN7_PS_POSOFFSET_NONE;
-
-   dw6 |= fast_clear_op;
-
-   /* _NEW_MULTISAMPLE
-    * In case of non 1x per sample shading, only one of SIMD8 and SIMD16
-    * should be enabled. We do 'SIMD16 only' dispatch if a SIMD16 shader
-    * is successfully compiled. In majority of the cases that bring us
-    * better performance than 'SIMD8 only' dispatch.
-    */
-   int min_invocations_per_fragment =
-      _mesa_get_min_invocations_per_fragment(ctx, fp, false);
-   assert(min_invocations_per_fragment >= 1);
-
-   if (prog_data->prog_offset_16 || prog_data->no_8) {
-      dw6 |= GEN7_PS_16_DISPATCH_ENABLE;
-      if (!prog_data->no_8 && min_invocations_per_fragment == 1) {
-         dw6 |= GEN7_PS_8_DISPATCH_ENABLE;
-         dw7 |= (prog_data->base.dispatch_grf_start_reg <<
-                 GEN7_PS_DISPATCH_START_GRF_SHIFT_0);
-         dw7 |= (prog_data->dispatch_grf_start_reg_16 <<
-                 GEN7_PS_DISPATCH_START_GRF_SHIFT_2);
-         ksp0 = stage_state->prog_offset;
-         ksp2 = stage_state->prog_offset + prog_data->prog_offset_16;
-      } else {
-         dw7 |= (prog_data->dispatch_grf_start_reg_16 <<
-                 GEN7_PS_DISPATCH_START_GRF_SHIFT_0);
-
-         ksp0 = stage_state->prog_offset + prog_data->prog_offset_16;
-      }
-   } else {
-      dw6 |= GEN7_PS_8_DISPATCH_ENABLE;
-      dw7 |= (prog_data->base.dispatch_grf_start_reg <<
-              GEN7_PS_DISPATCH_START_GRF_SHIFT_0);
-      ksp0 = stage_state->prog_offset;
-   }
-
-   BEGIN_BATCH(12);
-   OUT_BATCH(_3DSTATE_PS << 16 | (12 - 2));
-   OUT_BATCH(ksp0);
-   OUT_BATCH(0);
-   OUT_BATCH(dw3);
-   if (prog_data->base.total_scratch) {
-      OUT_RELOC64(stage_state->scratch_bo,
-                  I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
-                  ffs(prog_data->base.total_scratch) - 11);
-   } else {
-      OUT_BATCH(0);
-      OUT_BATCH(0);
-   }
-   OUT_BATCH(dw6);
-   OUT_BATCH(dw7);
-   OUT_BATCH(0); /* kernel 1 pointer */
-   OUT_BATCH(0);
-   OUT_BATCH(ksp2);
-   OUT_BATCH(0);
-   ADVANCE_BATCH();
-}
-
-static void
-upload_ps_state(struct brw_context *brw)
-{
-   /* BRW_NEW_FS_PROG_DATA */
-   const struct brw_wm_prog_data *prog_data = brw->wm.prog_data;
-   gen8_upload_ps_state(brw, brw->fragment_program, &brw->wm.base, prog_data,
-                        brw->wm.fast_clear_op);
-}
-
-const struct brw_tracked_state gen8_ps_state = {
-   .dirty = {
-      .mesa  = _NEW_MULTISAMPLE,
-      .brw   = BRW_NEW_BATCH |
-               BRW_NEW_FRAGMENT_PROGRAM |
-               BRW_NEW_FS_PROG_DATA,
-   },
-   .emit = upload_ps_state,
-};