/**************************************************************************
*
* 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 "util/u_memory.h"
#include "util/u_format.h"
#include "util/u_format_s3tc.h"
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "lp_texture.h"
#include "lp_fence.h"
#include "lp_jit.h"
#include "lp_screen.h"
#include "lp_context.h"
#include "lp_debug.h"
#include "lp_public.h"
#include "state_tracker/sw_winsys.h"
#ifdef DEBUG
int LP_DEBUG = 0;
static const struct debug_named_value lp_debug_flags[] = {
{ "pipe", DEBUG_PIPE },
{ "tgsi", DEBUG_TGSI },
{ "tex", DEBUG_TEX },
{ "asm", DEBUG_ASM },
{ "setup", DEBUG_SETUP },
{ "rast", DEBUG_RAST },
{ "query", DEBUG_QUERY },
{ "screen", DEBUG_SCREEN },
{ "jit", DEBUG_JIT },
{ "show_tiles", DEBUG_SHOW_TILES },
{ "show_subtiles", DEBUG_SHOW_SUBTILES },
{ "counters", DEBUG_COUNTERS },
{ "nopt", DEBUG_NO_LLVM_OPT },
{NULL, 0}
};
#endif
static const char *
llvmpipe_get_vendor(struct pipe_screen *screen)
{
return "VMware, 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 0;
case PIPE_CAP_MAX_COMBINED_SAMPLERS:
return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_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_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 LP_MAX_TEXTURE_2D_LEVELS;
case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
return LP_MAX_TEXTURE_3D_LEVELS;
case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
return LP_MAX_TEXTURE_2D_LEVELS;
case PIPE_CAP_TGSI_CONT_SUPPORTED:
return 1;
case PIPE_CAP_BLEND_EQUATION_SEPARATE:
return 1;
case PIPE_CAP_INDEP_BLEND_ENABLE:
return 0;
case PIPE_CAP_INDEP_BLEND_FUNC:
return 0;
case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
return 1;
case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
return 0;
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 )
{
struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
struct sw_winsys *winsys = screen->winsys;
const struct util_format_description *format_desc;
format_desc = util_format_description(format);
if(!format_desc)
return FALSE;
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 util_format_s3tc_enabled;
default:
break;
}
if(tex_usage & PIPE_BIND_RENDER_TARGET) {
if(format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
return FALSE;
if(format_desc->block.width != 1 ||
format_desc->block.height != 1)
return FALSE;
if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB)
return FALSE;
}
if(tex_usage & (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
PIPE_BIND_SHARED)) {
if(!winsys->is_displaytarget_format_supported(winsys, tex_usage, format))
return FALSE;
}
if(tex_usage & PIPE_BIND_DEPTH_STENCIL) {
if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
return FALSE;
/* FIXME: Temporary restriction. See lp_state_fs.c. */
if(format_desc->block.bits != 32)
return FALSE;
}
return TRUE;
}
static void
llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
struct pipe_surface *surface,
void *context_private)
{
struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
struct sw_winsys *winsys = screen->winsys;
struct llvmpipe_resource *texture = llvmpipe_resource(surface->texture);
assert(texture->dt);
if (texture->dt)
winsys->displaytarget_display(winsys, texture->dt, context_private);
}
static void
llvmpipe_destroy_screen( struct pipe_screen *_screen )
{
struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
struct sw_winsys *winsys = screen->winsys;
lp_jit_screen_cleanup(screen);
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 sw_winsys *winsys)
{
struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
#ifdef DEBUG
LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
#endif
if (!screen)
return NULL;
screen->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;
screen->base.context_create = llvmpipe_create_context;
screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
util_format_s3tc_init();
llvmpipe_init_screen_resource_funcs(&screen->base);
llvmpipe_init_screen_fence_funcs(&screen->base);
lp_jit_screen_init(screen);
return &screen->base;
}