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/**************************************************************************
*
* Copyright 2008 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.
*
**************************************************************************/
#include <llvm-c/Transforms/Scalar.h>
#include "util/u_memory.h"
#include "util/u_simple_screen.h"
#include "pipe/internal/p_winsys_screen.h"
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "lp_texture.h"
#include "lp_winsys.h"
#include "lp_screen.h"
static const char *
llvmpipe_get_vendor(struct pipe_screen *screen)
{
return "Tungsten Graphics, Inc.";
}
static const char *
llvmpipe_get_name(struct pipe_screen *screen)
{
return "llvmpipe";
}
static int
llvmpipe_get_param(struct pipe_screen *screen, int param)
{
switch (param) {
case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
return PIPE_MAX_SAMPLERS;
case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
return PIPE_MAX_SAMPLERS;
case PIPE_CAP_NPOT_TEXTURES:
return 1;
case PIPE_CAP_TWO_SIDED_STENCIL:
return 1;
case PIPE_CAP_GLSL:
return 1;
case PIPE_CAP_S3TC:
return 0;
case PIPE_CAP_ANISOTROPIC_FILTER:
return 0;
case PIPE_CAP_POINT_SPRITE:
return 1;
case PIPE_CAP_MAX_RENDER_TARGETS:
return PIPE_MAX_COLOR_BUFS;
case PIPE_CAP_OCCLUSION_QUERY:
return 1;
case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
return 1;
case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
return 1;
case PIPE_CAP_TEXTURE_SHADOW_MAP:
return 1;
case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
return 13; /* max 4Kx4K */
case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
return 8; /* max 128x128x128 */
case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
return 13; /* max 4Kx4K */
case PIPE_CAP_TGSI_CONT_SUPPORTED:
return 1;
case PIPE_CAP_BLEND_EQUATION_SEPARATE:
return 1;
default:
return 0;
}
}
static float
llvmpipe_get_paramf(struct pipe_screen *screen, int param)
{
switch (param) {
case PIPE_CAP_MAX_LINE_WIDTH:
/* fall-through */
case PIPE_CAP_MAX_LINE_WIDTH_AA:
return 255.0; /* arbitrary */
case PIPE_CAP_MAX_POINT_WIDTH:
/* fall-through */
case PIPE_CAP_MAX_POINT_WIDTH_AA:
return 255.0; /* arbitrary */
case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
return 16.0; /* not actually signficant at this time */
case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
return 16.0; /* arbitrary */
default:
return 0;
}
}
/**
* Query format support for creating a texture, drawing surface, etc.
* \param format the format to test
* \param type one of PIPE_TEXTURE, PIPE_SURFACE
*/
static boolean
llvmpipe_is_format_supported( struct pipe_screen *screen,
enum pipe_format format,
enum pipe_texture_target target,
unsigned tex_usage,
unsigned geom_flags )
{
assert(target == PIPE_TEXTURE_1D ||
target == PIPE_TEXTURE_2D ||
target == PIPE_TEXTURE_3D ||
target == PIPE_TEXTURE_CUBE);
switch(format) {
case PIPE_FORMAT_DXT1_RGB:
case PIPE_FORMAT_DXT1_RGBA:
case PIPE_FORMAT_DXT3_RGBA:
case PIPE_FORMAT_DXT5_RGBA:
return FALSE;
default:
return TRUE;
}
}
static void
llvmpipe_destroy_screen( struct pipe_screen *_screen )
{
struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
struct pipe_winsys *winsys = _screen->winsys;
if(screen->engine)
LLVMDisposeExecutionEngine(screen->engine);
if(screen->pass)
LLVMDisposePassManager(screen->pass);
if(winsys->destroy)
winsys->destroy(winsys);
FREE(screen);
}
/**
* Create a new pipe_screen object
* Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
*/
struct pipe_screen *
llvmpipe_create_screen(struct pipe_winsys *winsys)
{
struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
char *error = NULL;
if (!screen)
return NULL;
screen->base.winsys = winsys;
screen->base.destroy = llvmpipe_destroy_screen;
screen->base.get_name = llvmpipe_get_name;
screen->base.get_vendor = llvmpipe_get_vendor;
screen->base.get_param = llvmpipe_get_param;
screen->base.get_paramf = llvmpipe_get_paramf;
screen->base.is_format_supported = llvmpipe_is_format_supported;
llvmpipe_init_screen_texture_funcs(&screen->base);
u_simple_screen_init(&screen->base);
screen->module = LLVMModuleCreateWithName("llvmpipe");
screen->provider = LLVMCreateModuleProviderForExistingModule(screen->module);
if (LLVMCreateJITCompiler(&screen->engine, screen->provider, 1, &error)) {
fprintf(stderr, "%s\n", error);
LLVMDisposeMessage(error);
abort();
}
screen->pass = LLVMCreateFunctionPassManager(screen->provider);
LLVMAddTargetData(LLVMGetExecutionEngineTargetData(screen->engine), screen->pass);
/* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
* but there are more on SVN. */
LLVMAddConstantPropagationPass(screen->pass);
LLVMAddInstructionCombiningPass(screen->pass);
LLVMAddPromoteMemoryToRegisterPass(screen->pass);
LLVMAddGVNPass(screen->pass);
LLVMAddCFGSimplificationPass(screen->pass);
return &screen->base;
}
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