static void
lp_jit_init_globals(struct llvmpipe_screen *screen)
{
- /* struct lp_jit_context */
+ LLVMTypeRef texture_type;
+
+ /* struct lp_jit_texture */
{
LLVMTypeRef elem_types[4];
+
+ elem_types[LP_JIT_TEXTURE_WIDTH] = LLVMInt32Type();
+ elem_types[LP_JIT_TEXTURE_HEIGHT] = LLVMInt32Type();
+ elem_types[LP_JIT_TEXTURE_STRIDE] = LLVMInt32Type();
+ elem_types[LP_JIT_TEXTURE_DATA] = LLVMPointerType(LLVMInt8Type(), 0);
+
+ texture_type = LLVMStructType(elem_types, Elements(elem_types), 0);
+
+ LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, width,
+ screen->target, texture_type,
+ LP_JIT_TEXTURE_WIDTH);
+ LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, height,
+ screen->target, texture_type,
+ LP_JIT_TEXTURE_HEIGHT);
+ LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, stride,
+ screen->target, texture_type,
+ LP_JIT_TEXTURE_STRIDE);
+ LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, data,
+ screen->target, texture_type,
+ LP_JIT_TEXTURE_DATA);
+ LP_CHECK_STRUCT_SIZE(struct lp_jit_texture,
+ screen->target, texture_type);
+
+ LLVMAddTypeName(screen->module, "texture", texture_type);
+ }
+
+ /* struct lp_jit_context */
+ {
+ LLVMTypeRef elem_types[5];
LLVMTypeRef context_type;
elem_types[0] = LLVMPointerType(LLVMFloatType(), 0); /* constants */
elem_types[1] = LLVMPointerType(LLVMInt8Type(), 0); /* samplers */
elem_types[2] = LLVMFloatType(); /* alpha_ref_value */
elem_types[3] = LLVMPointerType(LLVMInt8Type(), 0); /* blend_color */
+ elem_types[4] = LLVMArrayType(texture_type, PIPE_MAX_SAMPLERS); /* textures */
context_type = LLVMStructType(elem_types, Elements(elem_types), 0);
screen->target, context_type, 2);
LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color,
screen->target, context_type, 3);
+ LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, textures,
+ screen->target, context_type,
+ LP_JIT_CONTEXT_TEXTURES_INDEX);
LP_CHECK_STRUCT_SIZE(struct lp_jit_context,
screen->target, context_type);
a0_ptr, dadx_ptr, dady_ptr,
x0, y0, 2, 0);
+#if 0
+ /* C texture sampling */
sampler = lp_c_sampler_soa_create(context_ptr);
+#else
+ /* code generated texture sampling */
+ sampler = lp_llvm_sampler_soa_create(key->sampler, context_ptr);
+#endif
for(i = 0; i < num_fs; ++i) {
LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
*/
static void
make_variant_key(struct llvmpipe_context *lp,
+ struct lp_fragment_shader *shader,
struct lp_fragment_shader_variant_key *key)
{
+ unsigned i;
+
memset(key, 0, sizeof *key);
memcpy(&key->depth, &lp->depth_stencil->depth, sizeof key->depth);
/* alpha.ref_value is passed in jit_context */
memcpy(&key->blend, lp->blend, sizeof key->blend);
+
+ for(i = 0; i < PIPE_MAX_SAMPLERS; ++i)
+ if(shader->info.file_mask[TGSI_FILE_SAMPLER] & (1 << i))
+ lp_sampler_static_state(&key->sampler[i], lp->texture[i], lp->sampler[i]);
}
struct lp_fragment_shader_variant_key key;
struct lp_fragment_shader_variant *variant;
- make_variant_key(lp, &key);
+ make_variant_key(lp, shader, &key);
variant = shader->variants;
while(variant) {
--- /dev/null
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/**
+ * Texture sampling code generation
+ *
+ * This file is nothing more than ugly glue between three largely independent
+ * entities:
+ * - TGSI -> LLVM translation (i.e., lp_build_tgsi_soa)
+ * - texture sampling code generation (i.e., lp_build_sample_soa)
+ * - LLVM pipe driver
+ *
+ * All interesting code is in the functions mentioned above. There is really
+ * nothing to see here.
+ *
+ * @author Jose Fonseca <jfonseca@vmware.com>
+ */
+
+#include "pipe/p_defines.h"
+#include "pipe/p_shader_tokens.h"
+#include "lp_bld_debug.h"
+#include "lp_bld_type.h"
+#include "lp_bld_intr.h"
+#include "lp_bld_sample.h"
+#include "lp_bld_tgsi.h"
+#include "lp_state.h"
+#include "lp_tex_sample.h"
+
+
+/**
+ * This provides the bridge between the sampler state store in lp_jit_context
+ * and lp_jit_texture and the sampler code generator. It provides the
+ * texture layout information required by the texture sampler code generator
+ * in terms of the state stored in lp_jit_context and lp_jit_texture in runtime.
+ */
+struct llvmpipe_sampler_dynamic_state
+{
+ struct lp_sampler_dynamic_state base;
+
+ const struct lp_sampler_static_state *static_state;
+
+ LLVMValueRef context_ptr;
+};
+
+
+/**
+ * This is the bridge between our sampler and the TGSI translator.
+ */
+struct lp_llvm_sampler_soa
+{
+ struct lp_build_sampler_soa base;
+
+ struct llvmpipe_sampler_dynamic_state dynamic_state;
+};
+
+
+/**
+ * Fetch the specified member of the lp_jit_texture structure.
+ *
+ * @sa http://llvm.org/docs/GetElementPtr.html
+ */
+static LLVMValueRef
+lp_llvm_texture_member(struct lp_sampler_dynamic_state *base,
+ LLVMBuilderRef builder,
+ unsigned unit,
+ unsigned member_index,
+ const char *member_name)
+{
+ struct llvmpipe_sampler_dynamic_state *state = (struct llvmpipe_sampler_dynamic_state *)base;
+ LLVMValueRef indices[4];
+ LLVMValueRef ptr;
+ LLVMValueRef res;
+
+ assert(unit < PIPE_MAX_SAMPLERS);
+
+ /* context[0] */
+ indices[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
+ /* context[0].textures */
+ indices[1] = LLVMConstInt(LLVMInt32Type(), LP_JIT_CONTEXT_TEXTURES_INDEX, 0);
+ /* context[0].textures[unit] */
+ indices[2] = LLVMConstInt(LLVMInt32Type(), unit, 0);
+ /* context[0].textures[unit].member */
+ indices[3] = LLVMConstInt(LLVMInt32Type(), member_index, 0);
+
+ ptr = LLVMBuildGEP(builder, state->context_ptr, indices, Elements(indices), "");
+
+ res = LLVMBuildLoad(builder, ptr, "");
+
+ lp_build_name(res, "context.texture%u.%s", unit, member_name);
+
+ return res;
+}
+
+
+/**
+ * Helper macro to instantiate the functions that generate the code to fetch
+ * the members of lp_jit_texture to fulfill the sampler code generator requests.
+ *
+ * This complexity is the price we have to pay to keep the texture sampler code
+ * generator a reusable module without dependencies to llvmpipe internals.
+ */
+#define LP_LLVM_TEXTURE_MEMBER(_name, _index) \
+ static LLVMValueRef \
+ lp_llvm_texture_##_name( struct lp_sampler_dynamic_state *base, \
+ LLVMBuilderRef builder, \
+ unsigned unit) \
+ { \
+ return lp_llvm_texture_member(base, builder, unit, _index, #_name ); \
+ }
+
+
+LP_LLVM_TEXTURE_MEMBER(width, LP_JIT_TEXTURE_WIDTH)
+LP_LLVM_TEXTURE_MEMBER(height, LP_JIT_TEXTURE_HEIGHT)
+LP_LLVM_TEXTURE_MEMBER(stride, LP_JIT_TEXTURE_STRIDE)
+LP_LLVM_TEXTURE_MEMBER(data_ptr, LP_JIT_TEXTURE_DATA)
+
+
+static void
+lp_llvm_sampler_soa_destroy(struct lp_build_sampler_soa *sampler)
+{
+ FREE(sampler);
+}
+
+
+static void
+lp_llvm_sampler_soa_emit_fetch_texel(struct lp_build_sampler_soa *base,
+ LLVMBuilderRef builder,
+ union lp_type type,
+ unsigned unit,
+ unsigned num_coords,
+ const LLVMValueRef *coords,
+ LLVMValueRef lodbias,
+ LLVMValueRef *texel)
+{
+ struct lp_llvm_sampler_soa *sampler = (struct lp_llvm_sampler_soa *)base;
+
+ assert(unit < PIPE_MAX_SAMPLERS);
+
+ lp_build_sample_soa(builder,
+ &sampler->dynamic_state.static_state[unit],
+ &sampler->dynamic_state.base,
+ type,
+ unit,
+ num_coords,
+ coords,
+ lodbias,
+ texel);
+}
+
+
+struct lp_build_sampler_soa *
+lp_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
+ LLVMValueRef context_ptr)
+{
+ struct lp_llvm_sampler_soa *sampler;
+
+ sampler = CALLOC_STRUCT(lp_llvm_sampler_soa);
+ if(!sampler)
+ return NULL;
+
+ sampler->base.destroy = lp_llvm_sampler_soa_destroy;
+ sampler->base.emit_fetch_texel = lp_llvm_sampler_soa_emit_fetch_texel;
+ sampler->dynamic_state.base.width = lp_llvm_texture_width;
+ sampler->dynamic_state.base.height = lp_llvm_texture_height;
+ sampler->dynamic_state.base.stride = lp_llvm_texture_stride;
+ sampler->dynamic_state.base.data_ptr = lp_llvm_texture_data_ptr;
+ sampler->dynamic_state.static_state = static_state;
+ sampler->dynamic_state.context_ptr = context_ptr;
+
+ return &sampler->base;
+}
+
OSDN Git Service
