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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
/**
* @author Jose Fonseca <jfonseca@vmware.com>
* @author Keith Whitwell <keith@tungstengraphics.com>
*/
#include "util/u_memory.h"
#include "util/u_math.h"
#include "util/u_debug_dump.h"
#include "lp_screen.h"
#include "lp_context.h"
#include "lp_state.h"
#include "lp_bld_type.h"
#include "lp_bld_arit.h"
#include "lp_bld_logic.h"
#include "lp_bld_blend.h"
#include "lp_bld_debug.h"
static void
blend_generate(struct llvmpipe_screen *screen,
struct lp_blend_state *blend)
{
union lp_type type;
struct lp_build_context bld;
LLVMTypeRef vec_type;
LLVMTypeRef int_vec_type;
LLVMTypeRef arg_types[4];
LLVMTypeRef func_type;
LLVMValueRef mask_ptr;
LLVMValueRef src_ptr;
LLVMValueRef dst_ptr;
LLVMValueRef const_ptr;
LLVMBasicBlockRef block;
LLVMBuilderRef builder;
LLVMValueRef mask;
LLVMValueRef src[4];
LLVMValueRef con[4];
LLVMValueRef dst[4];
LLVMValueRef res[4];
char src_name[5] = "src?";
char con_name[5] = "con?";
char dst_name[5] = "dst?";
char res_name[5] = "res?";
unsigned i;
type.value = 0;
type.floating = FALSE;
type.sign = FALSE;
type.norm = TRUE;
type.width = 8;
type.length = 16;
vec_type = lp_build_vec_type(type);
int_vec_type = lp_build_int_vec_type(type);
arg_types[0] = LLVMPointerType(int_vec_type, 0); /* mask */
arg_types[1] = LLVMPointerType(vec_type, 0); /* src */
arg_types[2] = LLVMPointerType(vec_type, 0); /* con */
arg_types[3] = LLVMPointerType(vec_type, 0); /* dst */
func_type = LLVMFunctionType(LLVMVoidType(), arg_types, Elements(arg_types), 0);
blend->function = LLVMAddFunction(screen->module, "blend", func_type);
LLVMSetFunctionCallConv(blend->function, LLVMCCallConv);
mask_ptr = LLVMGetParam(blend->function, 0);
src_ptr = LLVMGetParam(blend->function, 1);
const_ptr = LLVMGetParam(blend->function, 2);
dst_ptr = LLVMGetParam(blend->function, 3);
block = LLVMAppendBasicBlock(blend->function, "entry");
builder = LLVMCreateBuilder();
LLVMPositionBuilderAtEnd(builder, block);
lp_build_context_init(&bld, builder, type);
mask = LLVMBuildLoad(builder, mask_ptr, "mask");
for(i = 0; i < 4; ++i) {
LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
con_name[3] = dst_name[3] = src_name[3] = "rgba"[i];
src[i] = LLVMBuildLoad(builder, LLVMBuildGEP(builder, src_ptr, &index, 1, ""), src_name);
con[i] = LLVMBuildLoad(builder, LLVMBuildGEP(builder, const_ptr, &index, 1, ""), con_name);
dst[i] = LLVMBuildLoad(builder, LLVMBuildGEP(builder, dst_ptr, &index, 1, ""), dst_name);
}
lp_build_blend_soa(builder, &blend->base, type, src, dst, con, res);
for(i = 0; i < 4; ++i) {
LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
res_name[3] = "rgba"[i];
LLVMSetValueName(res[i], res_name);
res[i] = lp_build_select(&bld, mask, res[i], dst[i]);
LLVMBuildStore(builder, res[i], LLVMBuildGEP(builder, dst_ptr, &index, 1, ""));
}
LLVMBuildRetVoid(builder);;
LLVMDisposeBuilder(builder);
}
void *
llvmpipe_create_blend_state(struct pipe_context *pipe,
const struct pipe_blend_state *base)
{
struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
struct lp_blend_state *blend;
blend = CALLOC_STRUCT(lp_blend_state);
if(!blend)
return NULL;
blend->base = *base;
blend_generate(screen, blend);
LLVMRunFunctionPassManager(screen->pass, blend->function);
#ifdef DEBUG
debug_printf("%s=%s %s=%s %s=%s %s=%s %s=%s %s=%s\n",
"rgb_func", debug_dump_blend_func (blend->base.rgb_func, TRUE),
"rgb_src_factor", debug_dump_blend_factor(blend->base.rgb_src_factor, TRUE),
"rgb_dst_factor", debug_dump_blend_factor(blend->base.rgb_dst_factor, TRUE),
"alpha_func", debug_dump_blend_func (blend->base.alpha_func, TRUE),
"alpha_src_factor", debug_dump_blend_factor(blend->base.alpha_src_factor, TRUE),
"alpha_dst_factor", debug_dump_blend_factor(blend->base.alpha_dst_factor, TRUE));
LLVMDumpValue(blend->function);
debug_printf("\n");
#endif
if(LLVMVerifyFunction(blend->function, LLVMPrintMessageAction)) {
LLVMDumpValue(blend->function);
abort();
}
blend->jit_function = (lp_blend_func)LLVMGetPointerToGlobal(screen->engine, blend->function);
#ifdef DEBUG
lp_disassemble(blend->jit_function);
#endif
return blend;
}
void llvmpipe_bind_blend_state( struct pipe_context *pipe,
void *blend )
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
llvmpipe->blend = (struct lp_blend_state *)blend;
llvmpipe->dirty |= LP_NEW_BLEND;
}
void llvmpipe_delete_blend_state(struct pipe_context *pipe,
void *_blend)
{
struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
struct lp_blend_state *blend = (struct lp_blend_state *)_blend;
if(blend->function) {
if(blend->jit_function)
LLVMFreeMachineCodeForFunction(screen->engine, blend->function);
LLVMDeleteFunction(blend->function);
}
FREE( blend );
}
void llvmpipe_set_blend_color( struct pipe_context *pipe,
const struct pipe_blend_color *blend_color )
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
unsigned i, j;
for (i = 0; i < 4; ++i)
for (j = 0; j < 16; ++j)
llvmpipe->blend_color[i][j] = float_to_ubyte(blend_color->color[i]);
llvmpipe->dirty |= LP_NEW_BLEND;
}
/** XXX move someday? Or consolidate all these simple state setters
* into one file.
*/
void *
llvmpipe_create_depth_stencil_state(struct pipe_context *pipe,
const struct pipe_depth_stencil_alpha_state *depth_stencil)
{
return mem_dup(depth_stencil, sizeof(*depth_stencil));
}
void
llvmpipe_bind_depth_stencil_state(struct pipe_context *pipe,
void *depth_stencil)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
llvmpipe->depth_stencil = (const struct pipe_depth_stencil_alpha_state *)depth_stencil;
llvmpipe->dirty |= LP_NEW_DEPTH_STENCIL_ALPHA;
}
void
llvmpipe_delete_depth_stencil_state(struct pipe_context *pipe, void *depth)
{
FREE( depth );
}
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