pvr: Transfer optimisation remove unused features from API

The transfer command "struct pvr_transfer_cmd" has support for
features not used by Vulkan: colour key, pattern, rop blit and
alpha blending

The whole "struct pvr_transfer_blit" can be removed. Also all code
related to transfer alpha blending can be removed.

This is an optimisation and doesn't fix any dEQP tests.

Signed-off-by: Oskar Rundgren <oskar.rundgren@imgtec.com>
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22958>

8 files changed, 11 insertions, 132 deletions

diff --git a/src/imagination/vulkan/pvr_common.h b/src/imagination/vulkan/pvr_common.h
index 13395386b01..3d135a68cef 100644
--- a/src/imagination/vulkan/pvr_common.h
+++ b/src/imagination/vulkan/pvr_common.h
@@ -169,16 +169,6 @@ enum pvr_resolve_op {
    PVR_RESOLVE_SAMPLE7,
 };
 
-enum pvr_alpha_type {
-   PVR_ALPHA_NONE,
-   PVR_ALPHA_SOURCE,
-   PVR_ALPHA_PREMUL_SOURCE,
-   PVR_ALPHA_GLOBAL,
-   PVR_ALPHA_PREMUL_SOURCE_WITH_GLOBAL,
-   PVR_ALPHA_CUSTOM,
-   PVR_ALPHA_AATEXT,
-};
-
 enum pvr_event_state {
    PVR_EVENT_STATE_SET_BY_HOST,
    PVR_EVENT_STATE_RESET_BY_HOST,
diff --git a/src/imagination/vulkan/pvr_formats.c b/src/imagination/vulkan/pvr_formats.c
index 37efc6d9ae6..ac2f02c6796 100644
--- a/src/imagination/vulkan/pvr_formats.c
+++ b/src/imagination/vulkan/pvr_formats.c
@@ -1038,20 +1038,8 @@ bool pvr_format_is_pbe_downscalable(VkFormat vk_format)
    }
 }
 
-uint32_t pvr_pbe_pixel_num_loads(enum pvr_transfer_pbe_pixel_src pbe_format,
-                                 uint32_t alpha_type)
+uint32_t pvr_pbe_pixel_num_loads(enum pvr_transfer_pbe_pixel_src pbe_format)
 {
-   switch (alpha_type) {
-   default:
-   case PVR_ALPHA_NONE:
-      break;
-   case PVR_ALPHA_SOURCE:
-   case PVR_ALPHA_PREMUL_SOURCE:
-   case PVR_ALPHA_PREMUL_SOURCE_WITH_GLOBAL:
-   case PVR_ALPHA_GLOBAL:
-      return 2U;
-   }
-
    switch (pbe_format) {
    case PVR_TRANSFER_PBE_PIXEL_SRC_UU8888:
    case PVR_TRANSFER_PBE_PIXEL_SRC_US8888:
diff --git a/src/imagination/vulkan/pvr_formats.h b/src/imagination/vulkan/pvr_formats.h
index bdd1a4cf906..b0be90b2c29 100644
--- a/src/imagination/vulkan/pvr_formats.h
+++ b/src/imagination/vulkan/pvr_formats.h
@@ -220,13 +220,6 @@ void pvr_get_hw_clear_color(VkFormat vk_format,
                             VkClearColorValue value,
                             uint32_t packed_out[static const 4]);
 
-/* TODO: alpha_type is of 'enum pvr_int_pbe_pixel_num_loads' type. See if we can
- * move that in here. It's currently in pvr_common.h and it doesn't seem
- * appropriate including that in here. Also moving the definition in here would
- * make pvr_common.h include this which would mean that the compiler would be
- * pulling in vulkan specific format stuff.
- */
-uint32_t pvr_pbe_pixel_num_loads(enum pvr_transfer_pbe_pixel_src pbe_format,
-                                 uint32_t alpha_type);
+uint32_t pvr_pbe_pixel_num_loads(enum pvr_transfer_pbe_pixel_src pbe_format);
 
 #endif /* PVR_FORMATS_H */
diff --git a/src/imagination/vulkan/pvr_job_transfer.c b/src/imagination/vulkan/pvr_job_transfer.c
index 7f435ac7935..9f38be154b2 100644
--- a/src/imagination/vulkan/pvr_job_transfer.c
+++ b/src/imagination/vulkan/pvr_job_transfer.c
@@ -1459,15 +1459,14 @@ static void pvr_uv_space(const struct pvr_device_info *dev_info,
 }
 
 static uint32_t pvr_int_pbe_pixel_num_sampler_and_image_states(
-   enum pvr_transfer_pbe_pixel_src pbe_format,
-   uint32_t alpha_type)
+   enum pvr_transfer_pbe_pixel_src pbe_format)
 {
    switch (pbe_format) {
    case PVR_TRANSFER_PBE_PIXEL_SRC_Y_UV_INTERLEAVED:
    case PVR_TRANSFER_PBE_PIXEL_SRC_Y_U_V:
       return 1U;
    default:
-      return pvr_pbe_pixel_num_loads(pbe_format, alpha_type);
+      return pvr_pbe_pixel_num_loads(pbe_format);
    }
 }
 
@@ -1663,9 +1662,7 @@ pvr_sampler_image_state(struct pvr_transfer_ctx *ctx,
       for (uint32_t source = 0; source < transfer_cmd->source_count; source++) {
          struct pvr_tq_layer_properties *layer =
             &state->shader_props.layer_props;
-         uint32_t max_load =
-            pvr_pbe_pixel_num_loads(layer->pbe_format,
-                                    state->shader_props.alpha_type);
+         uint32_t max_load = pvr_pbe_pixel_num_loads(layer->pbe_format);
 
          for (uint32_t load = 0U; load < max_load; load++) {
             const struct pvr_transfer_cmd_surface *surface;
@@ -1685,11 +1682,7 @@ pvr_sampler_image_state(struct pvr_transfer_ctx *ctx,
             case PVR_TRANSFER_PBE_PIXEL_SRC_F16_U8:
                if (load > 0U) {
                   surface = &transfer_cmd->dst;
-
-                  if (state->shader_props.alpha_type != PVR_ALPHA_NONE)
-                     filter = PVR_FILTER_POINT;
-                  else
-                     filter = transfer_cmd->sources[source].filter;
+                  filter = transfer_cmd->sources[source].filter;
                } else {
                   surface = &transfer_cmd->sources[source].surface;
                   filter = state->filter[source];
@@ -1709,8 +1702,7 @@ pvr_sampler_image_state(struct pvr_transfer_ctx *ctx,
             }
 
             if (load < pvr_int_pbe_pixel_num_sampler_and_image_states(
-                          layer->pbe_format,
-                          state->shader_props.alpha_type)) {
+                          layer->pbe_format)) {
                const struct pvr_device_info *dev_info =
                   &transfer_cmd->cmd_buffer->device->pdevice->dev_info;
 
@@ -1758,17 +1750,6 @@ static inline uint32_t pvr_dynamic_const_reg_advance(
    return offset + state->dynamic_const_reg_ptr++;
 }
 
-static inline void
-pvr_dma_global_alpha(const struct pvr_transfer_alpha *alpha,
-                     struct pvr_transfer_3d_state *state,
-                     const struct pvr_tq_frag_sh_reg_layout *sh_reg_layout,
-                     uint32_t *mem_ptr)
-{
-   float global = (float)alpha->global / 255.0f;
-
-   mem_ptr[pvr_dynamic_const_reg_advance(sh_reg_layout, state)] = fui(global);
-}
-
 /** Scales coefficients for sampling. (non normalized). */
 static inline void
 pvr_dma_texture_floats(const struct pvr_transfer_cmd *transfer_cmd,
@@ -2779,15 +2760,6 @@ static VkResult pvr_3d_copy_blit_core(struct pvr_transfer_ctx *ctx,
 
       state->shader_props.pick_component =
          pvr_pick_component_needed(&state->custom_mapping);
-      state->shader_props.alpha_type = transfer_cmd->blit.alpha.type;
-
-      if (state->shader_props.alpha_type != PVR_ALPHA_NONE &&
-          (state->shader_props.layer_props.pbe_format !=
-              PVR_TRANSFER_PBE_PIXEL_SRC_F16F16 &&
-           state->shader_props.layer_props.pbe_format !=
-              PVR_TRANSFER_PBE_PIXEL_SRC_F16_U8)) {
-         return vk_error(device, VK_ERROR_FORMAT_NOT_SUPPORTED);
-      }
 
       if (state->filter[0] == PVR_FILTER_LINEAR &&
           pvr_requires_usc_linear_filter(
@@ -2849,15 +2821,6 @@ static VkResult pvr_3d_copy_blit_core(struct pvr_transfer_ctx *ctx,
       if (result != VK_SUCCESS)
          return result;
 
-      if (state->shader_props.alpha_type == PVR_ALPHA_GLOBAL ||
-          state->shader_props.alpha_type ==
-             PVR_ALPHA_PREMUL_SOURCE_WITH_GLOBAL) {
-         pvr_dma_global_alpha(&transfer_cmd->blit.alpha,
-                              state,
-                              sh_reg_layout,
-                              dma_space);
-      }
-
       pvr_dma_texture_floats(transfer_cmd, state, sh_reg_layout, dma_space);
 
       if (transfer_cmd->sources[0].surface.mem_layout ==
@@ -4515,8 +4478,6 @@ static VkResult pvr_3d_clip_blit(struct pvr_transfer_ctx *ctx,
       ~(PVR_TRANSFER_CMD_FLAGS_FAST2D | PVR_TRANSFER_CMD_FLAGS_FILL |
         PVR_TRANSFER_CMD_FLAGS_DSMERGE | PVR_TRANSFER_CMD_FLAGS_PICKD);
 
-   memset(&bg_cmd.blit, 0U, sizeof(bg_cmd.blit));
-
    bg_cmd.source_count = state->custom_mapping.pass_count > 0U ? 0 : 1;
    if (bg_cmd.source_count > 0) {
       struct pvr_transfer_cmd_source *src = &bg_cmd.sources[0];
@@ -5474,12 +5435,8 @@ static VkResult pvr_reroute_to_clip(struct pvr_transfer_ctx *ctx,
                                     uint32_t pass_idx,
                                     bool *finished_out)
 {
-   const struct pvr_transfer_blit *blit = &transfer_cmd->blit;
    struct pvr_transfer_cmd clip_transfer_cmd;
 
-   if (blit->alpha.type != PVR_ALPHA_NONE)
-      return vk_error(ctx->device, VK_ERROR_FORMAT_NOT_SUPPORTED);
-
    clip_transfer_cmd = *transfer_cmd;
    clip_transfer_cmd.flags |= PVR_TRANSFER_CMD_FLAGS_FAST2D;
 
@@ -5506,7 +5463,6 @@ static VkResult pvr_3d_copy_blit(struct pvr_transfer_ctx *ctx,
    const struct pvr_device_info *const dev_info =
       &ctx->device->pdevice->dev_info;
 
-   const struct pvr_transfer_blit *blit = &transfer_cmd->blit;
    struct pvr_transfer_3d_state *state = &prep_data->state;
    struct pvr_transfer_cmd *active_cmd = transfer_cmd;
    struct pvr_transfer_cmd int_cmd;
@@ -5528,8 +5484,7 @@ static VkResult pvr_3d_copy_blit(struct pvr_transfer_ctx *ctx,
       if (src->surface.vk_format == transfer_cmd->dst.vk_format &&
           state->filter[0] == PVR_FILTER_POINT &&
           src->surface.sample_count <= transfer_cmd->dst.sample_count &&
-          (transfer_cmd->flags & PVR_TRANSFER_CMD_FLAGS_DSMERGE) == 0U &&
-          transfer_cmd->blit.alpha.type == PVR_ALPHA_NONE) {
+          (transfer_cmd->flags & PVR_TRANSFER_CMD_FLAGS_DSMERGE) == 0U) {
          uint32_t bpp;
 
          int_cmd = *transfer_cmd;
@@ -5583,9 +5538,6 @@ static VkResult pvr_3d_copy_blit(struct pvr_transfer_ctx *ctx,
    if (state->custom_mapping.pass_count > 0U) {
       struct pvr_transfer_pass *pass = &state->custom_mapping.passes[pass_idx];
 
-      if (blit->alpha.type != PVR_ALPHA_NONE)
-         return vk_error(ctx->device, VK_ERROR_FORMAT_NOT_SUPPORTED);
-
       if (active_cmd != &int_cmd) {
          int_cmd = *active_cmd;
          active_cmd = &int_cmd;
diff --git a/src/imagination/vulkan/pvr_private.h b/src/imagination/vulkan/pvr_private.h
index 36e9ddf02c5..cf281f6e825 100644
--- a/src/imagination/vulkan/pvr_private.h
+++ b/src/imagination/vulkan/pvr_private.h
@@ -398,44 +398,6 @@ struct pvr_rect_mapping {
    bool flip_y;
 };
 
-/* Describes an Alpha-Transparency configuration - for Transfer Queue Use. */
-struct pvr_transfer_alpha {
-   enum pvr_alpha_type type;
-   /* Global alpha value. */
-   uint32_t global;
-
-   /* Custom blend op for rgb. */
-   uint32_t custom_rgb;
-   /* Custom blend op for alpha. */
-   uint32_t custom_alpha;
-   /* Custom global alpha value for alpha output. */
-   uint32_t global2;
-   /* Custom multiplication of global and source alpha. */
-   bool glob_src_mul;
-   /* Custom zero source alpha transparency stage. */
-   bool zero_src_a_trans;
-
-   /* Enable argb1555 alpha components. */
-   bool alpha_components;
-   /* Source alpha value when argb1555 alpha bit is 0. */
-   uint32_t component0;
-   /* Source alpha value when argb1555 alpha bit is 1. */
-   uint32_t component1;
-};
-
-struct pvr_transfer_blit {
-   /* 16 bit rop4 (ie two 8 bit rop3's). */
-   uint32_t rop_code;
-
-   /* Color key mask. */
-   uint32_t color_mask;
-
-   /* Alpha blend. */
-   struct pvr_transfer_alpha alpha;
-
-   VkOffset2D offset;
-};
-
 struct pvr_transfer_cmd_source {
    struct pvr_transfer_cmd_surface surface;
 
@@ -473,8 +435,6 @@ struct pvr_transfer_cmd {
 
    VkRect2D scissor;
 
-   struct pvr_transfer_blit blit;
-
    /* Pointer to cmd buffer this transfer cmd belongs to. This is mainly used
     * to link buffer objects allocated during job submission into
     * cmd_buffer::bo_list head.
diff --git a/src/imagination/vulkan/pvr_transfer_frag_store.c b/src/imagination/vulkan/pvr_transfer_frag_store.c
index 758f7849011..1a0d29685b1 100644
--- a/src/imagination/vulkan/pvr_transfer_frag_store.c
+++ b/src/imagination/vulkan/pvr_transfer_frag_store.c
@@ -161,7 +161,8 @@ static uint32_t pvr_transfer_frag_shader_key(
    hash |= 1;
 
    shift_hash(hash, 3U);
-   hash |= shader_props->alpha_type;
+   /* alpha type none */
+   hash |= 0;
 
 #undef shift_hash
 
diff --git a/src/imagination/vulkan/usc/pvr_uscgen.h b/src/imagination/vulkan/usc/pvr_uscgen.h
index 89106301717..103df838e2e 100644
--- a/src/imagination/vulkan/usc/pvr_uscgen.h
+++ b/src/imagination/vulkan/usc/pvr_uscgen.h
@@ -49,9 +49,6 @@ struct pvr_tq_shader_properties {
    /* Sample specific channel of pixel. */
    bool pick_component;
 
-   /* Alpha type from transfer API. */
-   uint32_t alpha_type;
-
    struct pvr_tq_layer_properties {
       /* Controls whether we need to send the sample count to the TPU. */
       bool msaa;
diff --git a/src/imagination/vulkan/usc/pvr_uscgen_tq.c b/src/imagination/vulkan/usc/pvr_uscgen_tq.c
index 961310441bc..fc6f031994f 100644
--- a/src/imagination/vulkan/usc/pvr_uscgen_tq.c
+++ b/src/imagination/vulkan/usc/pvr_uscgen_tq.c
@@ -63,7 +63,6 @@ void pvr_uscgen_tq_frag(const struct pvr_tq_shader_properties *shader_props,
    /* TODO: Unrestrict. */
    assert(shader_props->full_rate == false);
    assert(shader_props->pick_component == false);
-   assert(shader_props->alpha_type == 0);
 
    const struct pvr_tq_layer_properties *layer_props =
       &shader_props->layer_props;
@@ -80,8 +79,7 @@ void pvr_uscgen_tq_frag(const struct pvr_tq_shader_properties *shader_props,
    assert(layer_props->byte_unwind == 0);
    assert(layer_props->linear == false);
 
-   loads = pvr_pbe_pixel_num_loads(layer_props->pbe_format,
-                                   shader_props->alpha_type);
+   loads = pvr_pbe_pixel_num_loads(layer_props->pbe_format);
    for (uint32_t load = 0; load < loads; ++load) {
       if (shader_props->iterated) {
          /* TODO: feed{back,forward} the coeff index to/from shader_info. */