i965/blorp: Remove support for push constants

Signed-off-by: Topi Pohjolainen <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>

5 files changed, 12 insertions, 145 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_blorp.c b/src/mesa/drivers/dri/i965/brw_blorp.c
index 4d6c0ba6bf2..04c10b66751 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp.c
+++ b/src/mesa/drivers/dri/i965/brw_blorp.c
@@ -187,17 +187,8 @@ brw_blorp_compile_nir_shader(struct brw_context *brw, struct nir_shader *nir,
    struct brw_wm_prog_data wm_prog_data;
    memset(&wm_prog_data, 0, sizeof(wm_prog_data));
 
-   /* We set up the params array but instead of making them point at actual
-    * GL constant values, they just store an index.  This is just fine as the
-    * backend compiler never looks at the contents of the pointers, it just
-    * re-arranges them for us.
-    */
-   const union gl_constant_value *param[BRW_BLORP_NUM_PUSH_CONSTANT_DWORDS];
-   for (unsigned i = 0; i < ARRAY_SIZE(param); i++)
-      param[i] = (const union gl_constant_value *)(intptr_t)i;
-
-   wm_prog_data.base.nr_params = BRW_BLORP_NUM_PUSH_CONSTANT_DWORDS;
-   wm_prog_data.base.param = param;
+   wm_prog_data.base.nr_params = 0;
+   wm_prog_data.base.param = NULL;
 
    /* BLORP always just uses the first two binding table entries */
    wm_prog_data.binding_table.render_target_start = 0;
@@ -235,9 +226,7 @@ brw_blorp_compile_nir_shader(struct brw_context *brw, struct nir_shader *nir,
    prog_data->num_varying_inputs = wm_prog_data.num_varying_inputs;
    prog_data->inputs_read = nir->info.inputs_read;
 
-   prog_data->nr_params = wm_prog_data.base.nr_params;
-   for (unsigned i = 0; i < ARRAY_SIZE(param); i++)
-      prog_data->param[i] = (uintptr_t)wm_prog_data.base.param[i];
+   assert(wm_prog_data.base.nr_params == 0);
 
    return program;
 }
diff --git a/src/mesa/drivers/dri/i965/brw_blorp.h b/src/mesa/drivers/dri/i965/brw_blorp.h
index ccfebc5395e..0d65514db50 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp.h
+++ b/src/mesa/drivers/dri/i965/brw_blorp.h
@@ -223,13 +223,6 @@ struct brw_blorp_wm_inputs
    uint32_t pad[3];
 };
 
-#define BRW_BLORP_NUM_PUSH_CONSTANT_DWORDS \
-   (sizeof(struct brw_blorp_wm_inputs) / 4)
-
-/* Every 32 bytes of push constant data constitutes one GEN register. */
-static const unsigned int BRW_BLORP_NUM_PUSH_CONST_REGS =
-   sizeof(struct brw_blorp_wm_inputs) / 32;
-
 struct brw_blorp_prog_data
 {
    bool dispatch_8;
@@ -253,14 +246,6 @@ struct brw_blorp_prog_data
    uint32_t flat_inputs;
    unsigned num_varying_inputs;
    GLbitfield64 inputs_read;
-
-   /* The compiler will re-arrange push constants and store the upload order
-    * here. Given an index 'i' in the final upload buffer, param[i] gives the
-    * index in the uniform store. In other words, the value to be uploaded can
-    * be found by brw_blorp_params::wm_push_consts[param[i]].
-    */
-   uint8_t nr_params;
-   uint8_t param[BRW_BLORP_NUM_PUSH_CONSTANT_DWORDS];
 };
 
 inline unsigned
diff --git a/src/mesa/drivers/dri/i965/gen6_blorp.c b/src/mesa/drivers/dri/i965/gen6_blorp.c
index 8b6b8f92cc3..c38952e4f3f 100644
--- a/src/mesa/drivers/dri/i965/gen6_blorp.c
+++ b/src/mesa/drivers/dri/i965/gen6_blorp.c
@@ -350,26 +350,6 @@ gen6_blorp_emit_cc_state_pointers(struct brw_context *brw,
    ADVANCE_BATCH();
 }
 
-
-/* WM push constants */
-uint32_t
-gen6_blorp_emit_wm_constants(struct brw_context *brw,
-                             const struct brw_blorp_params *params)
-{
-   uint32_t wm_push_const_offset;
-
-   uint32_t *constants = brw_state_batch(brw, AUB_TRACE_WM_CONSTANTS,
-                                         sizeof(params->wm_inputs),
-                                         32, &wm_push_const_offset);
-
-   const uint32_t *push_consts = (const uint32_t *)&params->wm_inputs;
-   for (unsigned i = 0; i < params->wm_prog_data->nr_params; i++)
-      constants[i] = push_consts[params->wm_prog_data->param[i]];
-
-   return wm_push_const_offset;
-}
-
-
 /* SURFACE_STATE for renderbuffer or texture surface (see
  * brw_update_renderbuffer_surface and brw_update_texture_surface)
  */
@@ -755,32 +735,6 @@ gen6_blorp_emit_wm_config(struct brw_context *brw,
    ADVANCE_BATCH();
 }
 
-
-static void
-gen6_blorp_emit_constant_ps(struct brw_context *brw,
-                            const struct brw_blorp_params *params,
-                            uint32_t wm_push_const_offset)
-{
-   /* Make sure the push constants fill an exact integer number of
-    * registers.
-    */
-   STATIC_ASSERT(sizeof(struct brw_blorp_wm_inputs) % 32 == 0);
-
-   /* There must be at least one register worth of push constant data. */
-   assert(BRW_BLORP_NUM_PUSH_CONST_REGS > 0);
-
-   /* Enable push constant buffer 0. */
-   BEGIN_BATCH(5);
-   OUT_BATCH(_3DSTATE_CONSTANT_PS << 16 |
-             GEN6_CONSTANT_BUFFER_0_ENABLE |
-             (5 - 2));
-   OUT_BATCH(wm_push_const_offset + (BRW_BLORP_NUM_PUSH_CONST_REGS - 1));
-   OUT_BATCH(0);
-   OUT_BATCH(0);
-   OUT_BATCH(0);
-   ADVANCE_BATCH();
-}
-
 static void
 gen6_blorp_emit_constant_ps_disable(struct brw_context *brw,
                                     const struct brw_blorp_params *params)
@@ -1050,7 +1004,6 @@ gen6_blorp_exec(struct brw_context *brw,
    uint32_t cc_blend_state_offset = 0;
    uint32_t cc_state_offset = 0;
    uint32_t depthstencil_offset;
-   uint32_t wm_push_const_offset = 0;
    uint32_t wm_bind_bo_offset = 0;
 
    /* Emit workaround flushes when we switch from drawing to blorping. */
@@ -1075,10 +1028,6 @@ gen6_blorp_exec(struct brw_context *brw,
       uint32_t wm_surf_offset_renderbuffer;
       uint32_t wm_surf_offset_texture = 0;
 
-      if (params->wm_prog_data->nr_params) {
-         wm_push_const_offset = gen6_blorp_emit_wm_constants(brw, params);
-      }
-
       intel_miptree_used_for_rendering(params->dst.mt);
       wm_surf_offset_renderbuffer =
          gen6_blorp_emit_surface_state(brw, params, &params->dst,
@@ -1104,10 +1053,7 @@ gen6_blorp_exec(struct brw_context *brw,
    gen6_blorp_emit_gs_disable(brw, params);
    gen6_blorp_emit_clip_disable(brw);
    gen6_blorp_emit_sf_config(brw, params);
-   if (params->wm_prog_data && params->wm_prog_data->nr_params)
-      gen6_blorp_emit_constant_ps(brw, params, wm_push_const_offset);
-   else
-      gen6_blorp_emit_constant_ps_disable(brw, params);
+   gen6_blorp_emit_constant_ps_disable(brw, params);
    gen6_blorp_emit_wm_config(brw, params);
    if (params->wm_prog_data)
       gen6_blorp_emit_binding_table_pointers(brw, wm_bind_bo_offset);
diff --git a/src/mesa/drivers/dri/i965/gen7_blorp.c b/src/mesa/drivers/dri/i965/gen7_blorp.c
index 7c2da8a39a9..bc076de9735 100644
--- a/src/mesa/drivers/dri/i965/gen7_blorp.c
+++ b/src/mesa/drivers/dri/i965/gen7_blorp.c
@@ -564,9 +564,6 @@ gen7_blorp_emit_ps_config(struct brw_context *brw,
    if (brw->is_haswell)
       dw4 |= SET_FIELD(1, HSW_PS_SAMPLE_MASK); /* 1 sample for now */
    if (params->wm_prog_data) {
-      if (params->wm_prog_data->nr_params)
-         dw4 |= GEN7_PS_PUSH_CONSTANT_ENABLE;
-
       dw5 |= prog_data->first_curbe_grf_0 << GEN7_PS_DISPATCH_START_GRF_SHIFT_0;
       dw5 |= prog_data->first_curbe_grf_2 << GEN7_PS_DISPATCH_START_GRF_SHIFT_2;
 
@@ -625,34 +622,6 @@ gen7_blorp_emit_sampler_state_pointers_ps(struct brw_context *brw,
    ADVANCE_BATCH();
 }
 
-
-void
-gen7_blorp_emit_constant_ps(struct brw_context *brw,
-                            uint32_t wm_push_const_offset)
-{
-   const uint8_t mocs = GEN7_MOCS_L3;
-
-   /* Make sure the push constants fill an exact integer number of
-    * registers.
-    */
-   STATIC_ASSERT(sizeof(struct brw_blorp_wm_inputs) % 32 == 0);
-
-   /* There must be at least one register worth of push constant data. */
-   assert(BRW_BLORP_NUM_PUSH_CONST_REGS > 0);
-
-   /* Enable push constant buffer 0. */
-   BEGIN_BATCH(7);
-   OUT_BATCH(_3DSTATE_CONSTANT_PS << 16 |
-             (7 - 2));
-   OUT_BATCH(BRW_BLORP_NUM_PUSH_CONST_REGS);
-   OUT_BATCH(0);
-   OUT_BATCH(wm_push_const_offset | mocs);
-   OUT_BATCH(0);
-   OUT_BATCH(0);
-   OUT_BATCH(0);
-   ADVANCE_BATCH();
-}
-
 void
 gen7_blorp_emit_constant_ps_disable(struct brw_context *brw)
 {
@@ -845,7 +814,6 @@ gen7_blorp_exec(struct brw_context *brw,
    uint32_t cc_blend_state_offset = 0;
    uint32_t cc_state_offset = 0;
    uint32_t depthstencil_offset;
-   uint32_t wm_push_const_offset = 0;
    uint32_t wm_bind_bo_offset = 0;
 
    brw_upload_state_base_address(brw);
@@ -870,10 +838,6 @@ gen7_blorp_exec(struct brw_context *brw,
       uint32_t wm_surf_offset_renderbuffer;
       uint32_t wm_surf_offset_texture = 0;
 
-      if (params->wm_prog_data->nr_params) {
-          wm_push_const_offset = gen6_blorp_emit_wm_constants(brw, params);
-      }
-
       intel_miptree_used_for_rendering(params->dst.mt);
       wm_surf_offset_renderbuffer =
          gen7_blorp_emit_surface_state(brw, &params->dst,
@@ -903,10 +867,7 @@ gen7_blorp_exec(struct brw_context *brw,
    if (params->wm_prog_data)
       gen7_blorp_emit_binding_table_pointers_ps(brw, wm_bind_bo_offset);
 
-   if (params->wm_prog_data && params->wm_prog_data->nr_params)
-      gen7_blorp_emit_constant_ps(brw, wm_push_const_offset);
-   else
-      gen7_blorp_emit_constant_ps_disable(brw);
+   gen7_blorp_emit_constant_ps_disable(brw);
 
    if (params->src.mt) {
       const uint32_t sampler_offset =
diff --git a/src/mesa/drivers/dri/i965/gen8_blorp.c b/src/mesa/drivers/dri/i965/gen8_blorp.c
index d8ea831f279..5d10a91724d 100644
--- a/src/mesa/drivers/dri/i965/gen8_blorp.c
+++ b/src/mesa/drivers/dri/i965/gen8_blorp.c
@@ -402,9 +402,6 @@ gen8_blorp_emit_ps_config(struct brw_context *brw,
       dw3 |= 1 << GEN7_PS_BINDING_TABLE_ENTRY_COUNT_SHIFT; /* One surface */
    }
 
-   if (prog_data->nr_params)
-      dw6 |= GEN7_PS_PUSH_CONSTANT_ENABLE;
-
    dw7 |= prog_data->first_curbe_grf_0 << GEN7_PS_DISPATCH_START_GRF_SHIFT_0;
    dw7 |= prog_data->first_curbe_grf_2 << GEN7_PS_DISPATCH_START_GRF_SHIFT_2;
 
@@ -577,9 +574,7 @@ gen8_blorp_emit_depth_stencil_state(struct brw_context *brw,
 }
 
 static void
-gen8_blorp_emit_constant_ps(struct brw_context *brw,
-                            const struct brw_blorp_params *params,
-                            uint32_t wm_push_const_offset)
+gen8_blorp_emit_disable_constant_ps(struct brw_context *brw)
 {
    const int dwords = brw->gen >= 8 ? 11 : 7;
    BEGIN_BATCH(dwords);
@@ -587,9 +582,9 @@ gen8_blorp_emit_constant_ps(struct brw_context *brw,
 
    if (brw->gen >= 9) {
       OUT_BATCH(0);
-      OUT_BATCH(params->wm_prog_data->nr_params);
+      OUT_BATCH(0);
    } else {
-      OUT_BATCH(params->wm_prog_data->nr_params);
+      OUT_BATCH(0);
       OUT_BATCH(0);
    }
 
@@ -598,19 +593,12 @@ gen8_blorp_emit_constant_ps(struct brw_context *brw,
       OUT_BATCH(0);
       OUT_BATCH(0);
       OUT_BATCH(0);
-
-      if (params->wm_prog_data->nr_params) {
-         OUT_RELOC64(brw->batch.bo, I915_GEM_DOMAIN_RENDER, 0,
-                     wm_push_const_offset);
-      } else {
-         OUT_BATCH(0);
-         OUT_BATCH(0);
-      }
-
+      OUT_BATCH(0);
+      OUT_BATCH(0);
       OUT_BATCH(0);
       OUT_BATCH(0);
    } else {
-      OUT_BATCH(wm_push_const_offset);
+      OUT_BATCH(0);
       OUT_BATCH(0);
       OUT_BATCH(0);
       OUT_BATCH(0);
@@ -704,9 +692,7 @@ gen8_blorp_exec(struct brw_context *brw, const struct brw_blorp_params *params)
    gen8_blorp_emit_disable_constant_state(brw, _3DSTATE_CONSTANT_DS);
    gen8_blorp_emit_disable_constant_state(brw, _3DSTATE_CONSTANT_GS);
 
-   const uint32_t wm_push_const_offset = params->wm_prog_data->nr_params ?
-      gen6_blorp_emit_wm_constants(brw, params) : 0;
-   gen8_blorp_emit_constant_ps(brw, params, wm_push_const_offset);
+   gen8_blorp_emit_disable_constant_ps(brw);
    wm_bind_bo_offset = gen8_blorp_emit_surface_states(brw, params);
 
    gen8_blorp_emit_disable_binding_table(brw,