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/**************************************************************************
*
* 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 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
* THE COPYRIGHT HOLDERS, AUTHORS 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.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*
**************************************************************************/
/**
* @file
* LLVMpipe support.
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
#include <windows.h>
#include "pipe/p_format.h"
#include "pipe/p_context.h"
#include "pipe/p_inlines.h"
#include "util/u_format.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "llvmpipe/lp_winsys.h"
#include "llvmpipe/lp_texture.h"
#include "stw_winsys.h"
struct gdi_llvmpipe_displaytarget
{
enum pipe_format format;
unsigned width;
unsigned height;
unsigned stride;
unsigned size;
void *data;
BITMAPINFO bmi;
};
/** Cast wrapper */
static INLINE struct gdi_llvmpipe_displaytarget *
gdi_llvmpipe_displaytarget( struct llvmpipe_displaytarget *buf )
{
return (struct gdi_llvmpipe_displaytarget *)buf;
}
static boolean
gdi_llvmpipe_is_displaytarget_format_supported( struct llvmpipe_winsys *ws,
enum pipe_format format )
{
switch(format) {
case PIPE_FORMAT_X8R8G8B8_UNORM:
case PIPE_FORMAT_A8R8G8B8_UNORM:
return TRUE;
/* TODO: Support other formats possible with BMPs, as described in
* http://msdn.microsoft.com/en-us/library/dd183376(VS.85).aspx */
default:
return FALSE;
}
}
static void *
gdi_llvmpipe_displaytarget_map(struct llvmpipe_winsys *ws,
struct llvmpipe_displaytarget *dt,
unsigned flags )
{
struct gdi_llvmpipe_displaytarget *gdt = gdi_llvmpipe_displaytarget(dt);
return gdt->data;
}
static void
gdi_llvmpipe_displaytarget_unmap(struct llvmpipe_winsys *ws,
struct llvmpipe_displaytarget *dt )
{
}
static void
gdi_llvmpipe_displaytarget_destroy(struct llvmpipe_winsys *winsys,
struct llvmpipe_displaytarget *dt)
{
struct gdi_llvmpipe_displaytarget *gdt = gdi_llvmpipe_displaytarget(dt);
align_free(gdt->data);
FREE(gdt);
}
static struct llvmpipe_displaytarget *
gdi_llvmpipe_displaytarget_create(struct llvmpipe_winsys *winsys,
enum pipe_format format,
unsigned width, unsigned height,
unsigned alignment,
unsigned *stride)
{
struct gdi_llvmpipe_displaytarget *gdt;
unsigned cpp;
unsigned bpp;
gdt = CALLOC_STRUCT(gdi_llvmpipe_displaytarget);
if(!gdt)
goto no_gdt;
gdt->format = format;
gdt->width = width;
gdt->height = height;
bpp = util_format_get_bits(format);
cpp = util_format_get_size(format);
gdt->stride = align(width * cpp, alignment);
gdt->size = gdt->stride * height;
gdt->data = align_malloc(gdt->size, alignment);
if(!gdt->data)
goto no_data;
gdt->bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
gdt->bmi.bmiHeader.biWidth = gdt->stride / cpp;
gdt->bmi.bmiHeader.biHeight= -(long)height;
gdt->bmi.bmiHeader.biPlanes = 1;
gdt->bmi.bmiHeader.biBitCount = bpp;
gdt->bmi.bmiHeader.biCompression = BI_RGB;
gdt->bmi.bmiHeader.biSizeImage = 0;
gdt->bmi.bmiHeader.biXPelsPerMeter = 0;
gdt->bmi.bmiHeader.biYPelsPerMeter = 0;
gdt->bmi.bmiHeader.biClrUsed = 0;
gdt->bmi.bmiHeader.biClrImportant = 0;
*stride = gdt->stride;
return (struct llvmpipe_displaytarget *)gdt;
no_data:
FREE(gdt);
no_gdt:
return NULL;
}
static void
gdi_llvmpipe_displaytarget_display(struct llvmpipe_winsys *winsys,
struct llvmpipe_displaytarget *dt,
void *context_private)
{
assert(0);
}
static void
gdi_llvmpipe_destroy(struct llvmpipe_winsys *winsys)
{
FREE(winsys);
}
static struct pipe_screen *
gdi_llvmpipe_screen_create(void)
{
static struct llvmpipe_winsys *winsys;
struct pipe_screen *screen;
winsys = CALLOC_STRUCT(llvmpipe_winsys);
if(!winsys)
goto no_winsys;
winsys->destroy = gdi_llvmpipe_destroy;
winsys->is_displaytarget_format_supported = gdi_llvmpipe_is_displaytarget_format_supported;
winsys->displaytarget_create = gdi_llvmpipe_displaytarget_create;
winsys->displaytarget_map = gdi_llvmpipe_displaytarget_map;
winsys->displaytarget_unmap = gdi_llvmpipe_displaytarget_unmap;
winsys->displaytarget_display = gdi_llvmpipe_displaytarget_display;
winsys->displaytarget_destroy = gdi_llvmpipe_displaytarget_destroy;
screen = llvmpipe_create_screen(winsys);
if(!screen)
goto no_screen;
return screen;
no_screen:
FREE(winsys);
no_winsys:
return NULL;
}
static struct pipe_context *
gdi_llvmpipe_context_create(struct pipe_screen *screen)
{
return llvmpipe_create(screen);
}
static void
gdi_llvmpipe_present(struct pipe_screen *screen,
struct pipe_surface *surface,
HDC hDC)
{
struct llvmpipe_texture *texture;
struct gdi_llvmpipe_displaytarget *gdt;
texture = llvmpipe_texture(surface->texture);
gdt = gdi_llvmpipe_displaytarget(texture->dt);
StretchDIBits(hDC,
0, 0, gdt->width, gdt->height,
0, 0, gdt->width, gdt->height,
gdt->data, &gdt->bmi, 0, SRCCOPY);
}
static const struct stw_winsys stw_winsys = {
&gdi_llvmpipe_screen_create,
&gdi_llvmpipe_context_create,
&gdi_llvmpipe_present,
NULL, /* get_adapter_luid */
NULL, /* shared_surface_open */
NULL, /* shared_surface_close */
NULL /* compose */
};
BOOL WINAPI
DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
{
switch (fdwReason) {
case DLL_PROCESS_ATTACH:
if (!stw_init(&stw_winsys)) {
return FALSE;
}
return stw_init_thread();
case DLL_THREAD_ATTACH:
return stw_init_thread();
case DLL_THREAD_DETACH:
stw_cleanup_thread();
break;
case DLL_PROCESS_DETACH:
stw_cleanup_thread();
stw_cleanup();
break;
}
return TRUE;
}
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