radeonsi: add preloading for all samplers

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.c b/src/gallium/drivers/radeonsi/radeonsi_shader.c
index 33f79e7ebe4d0cd357253f61c22d05ac952d55db..840537a69b2c61c461fc842f00751f5015ea4eb1 100644 (file)
--- a/src/gallium/drivers/radeonsi/radeonsi_shader.c
+++ b/src/gallium/drivers/radeonsi/radeonsi_shader.c
@@ -63,6 +63,8 @@ struct si_shader_context
        LLVMValueRef const_md;
        LLVMValueRef const_resource;
        LLVMValueRef *constants;
+       LLVMValueRef *resources;
+       LLVMValueRef *samplers;
 };
 
 static struct si_shader_context * si_shader_context(
@@ -740,8 +742,6 @@ static void tex_fetch_args(
        const struct tgsi_full_instruction * inst = emit_data->inst;
        unsigned opcode = inst->Instruction.Opcode;
        unsigned target = inst->Texture.Texture;
-       LLVMValueRef ptr;
-       LLVMValueRef offset;
        LLVMValueRef coords[4];
        LLVMValueRef address[16];
        unsigned count = 0;
@@ -859,18 +859,10 @@ static void tex_fetch_args(
        emit_data->args[1] = lp_build_gather_values(gallivm, address, count);
 
        /* Resource */
-       ptr = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_RESOURCE);
-       offset = lp_build_const_int32(bld_base->base.gallivm,
-                                 emit_data->inst->Src[1].Register.Index);
-       emit_data->args[2] = build_indexed_load(si_shader_ctx,
-                                               ptr, offset);
+       emit_data->args[2] = si_shader_ctx->resources[emit_data->inst->Src[1].Register.Index];
 
        /* Sampler */
-       ptr = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_SAMPLER);
-       offset = lp_build_const_int32(bld_base->base.gallivm,
-                                 emit_data->inst->Src[1].Register.Index);
-       emit_data->args[3] = build_indexed_load(si_shader_ctx,
-                                               ptr, offset);
+       emit_data->args[3] = si_shader_ctx->samplers[emit_data->inst->Src[1].Register.Index];
 
        /* Dimensions */
        emit_data->args[4] = lp_build_const_int32(bld_base->base.gallivm, target);
@@ -1009,6 +1001,40 @@ static void preload_constants(struct si_shader_context *si_shader_ctx)
        }
 }
 
+static void preload_samplers(struct si_shader_context *si_shader_ctx)
+{
+       struct lp_build_tgsi_context * bld_base = &si_shader_ctx->radeon_bld.soa.bld_base;
+       struct gallivm_state * gallivm = bld_base->base.gallivm;
+       const struct tgsi_shader_info * info = bld_base->info;
+
+       unsigned i, num_samplers = info->file_max[TGSI_FILE_SAMPLER] + 1;
+
+       LLVMValueRef res_ptr, samp_ptr;
+       LLVMValueRef offset;
+
+       if (num_samplers == 0)
+               return;
+
+       /* Allocate space for the values */
+       si_shader_ctx->resources = CALLOC(num_samplers, sizeof(LLVMValueRef));
+       si_shader_ctx->samplers = CALLOC(num_samplers, sizeof(LLVMValueRef));
+
+       res_ptr = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_RESOURCE);
+       samp_ptr = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_SAMPLER);
+
+       /* Load the resources and samplers, we rely on the code sinking to do the rest */
+       for (i = 0; i < num_samplers; ++i) {
+
+               /* Resource */
+               offset = lp_build_const_int32(gallivm, i);
+               si_shader_ctx->resources[i] = build_indexed_load(si_shader_ctx, res_ptr, offset);
+
+               /* Sampler */
+               offset = lp_build_const_int32(gallivm, i);
+               si_shader_ctx->samplers[i] = build_indexed_load(si_shader_ctx, samp_ptr, offset);
+       }
+}
+
 int si_pipe_shader_create(
        struct pipe_context *ctx,
        struct si_pipe_shader *shader,
@@ -1058,6 +1084,7 @@ int si_pipe_shader_create(
        create_meta_data(&si_shader_ctx);
        create_function(&si_shader_ctx);
        preload_constants(&si_shader_ctx);
+       preload_samplers(&si_shader_ctx);
 
        shader->shader.nr_cbufs = rctx->framebuffer.nr_cbufs;
 
@@ -1070,6 +1097,8 @@ int si_pipe_shader_create(
        if (!lp_build_tgsi_llvm(bld_base, sel->tokens)) {
                fprintf(stderr, "Failed to translate shader from TGSI to LLVM\n");
                FREE(si_shader_ctx.constants);
+               FREE(si_shader_ctx.resources);
+               FREE(si_shader_ctx.samplers);
                return -EINVAL;
        }
 
@@ -1102,6 +1131,8 @@ int si_pipe_shader_create(
                                               inst_byte_count - 12);
        if (shader->bo == NULL) {
                FREE(si_shader_ctx.constants);
+               FREE(si_shader_ctx.resources);
+               FREE(si_shader_ctx.samplers);
                return -ENOMEM;
        }
 
@@ -1116,6 +1147,8 @@ int si_pipe_shader_create(
        rctx->ws->buffer_unmap(shader->bo->cs_buf);
 
        FREE(si_shader_ctx.constants);
+       FREE(si_shader_ctx.resources);
+       FREE(si_shader_ctx.samplers);
        free(inst_bytes);
 
        return 0;