Sweden-Number/dlls/gdi32/dibdrv/opengl.c

374 lines
12 KiB
C

/*
* DIB driver OpenGL support
*
* Copyright 2012 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include "gdi_private.h"
#include "dibdrv.h"
#include "wine/library.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(dib);
#ifdef SONAME_LIBOSMESA
#include "wine/wgl.h"
#include "wine/wgl_driver.h"
#define OSMESA_COLOR_INDEX GL_COLOR_INDEX
#define OSMESA_RGBA GL_RGBA
#define OSMESA_BGRA 0x1
#define OSMESA_ARGB 0x2
#define OSMESA_RGB GL_RGB
#define OSMESA_BGR 0x4
#define OSMESA_RGB_565 0x5
#define OSMESA_ROW_LENGTH 0x10
#define OSMESA_Y_UP 0x11
typedef struct osmesa_context *OSMesaContext;
extern BOOL WINAPI GdiSetPixelFormat( HDC hdc, INT fmt, const PIXELFORMATDESCRIPTOR *pfd );
struct wgl_context
{
OSMesaContext context;
int format;
};
static struct opengl_funcs opengl_funcs;
#define USE_GL_FUNC(name) #name,
static const char *opengl_func_names[] = { ALL_WGL_FUNCS };
#undef USE_GL_FUNC
static OSMesaContext (*pOSMesaCreateContextExt)( GLenum format, GLint depthBits, GLint stencilBits,
GLint accumBits, OSMesaContext sharelist );
static void (*pOSMesaDestroyContext)( OSMesaContext ctx );
static void * (*pOSMesaGetProcAddress)( const char *funcName );
static GLboolean (*pOSMesaMakeCurrent)( OSMesaContext ctx, void *buffer, GLenum type,
GLsizei width, GLsizei height );
static void (*pOSMesaPixelStore)( GLint pname, GLint value );
static const struct
{
UINT mesa;
BYTE color_bits;
BYTE red_bits, red_shift;
BYTE green_bits, green_shift;
BYTE blue_bits, blue_shift;
BYTE alpha_bits, alpha_shift;
BYTE accum_bits;
BYTE depth_bits;
BYTE stencil_bits;
} pixel_formats[] =
{
{ OSMESA_BGRA, 32, 8, 16, 8, 8, 8, 0, 8, 24, 16, 32, 8 },
{ OSMESA_BGRA, 32, 8, 16, 8, 8, 8, 0, 8, 24, 16, 16, 8 },
{ OSMESA_RGBA, 32, 8, 0, 8, 8, 8, 16, 8, 24, 16, 32, 8 },
{ OSMESA_RGBA, 32, 8, 0, 8, 8, 8, 16, 8, 24, 16, 16, 8 },
{ OSMESA_ARGB, 32, 8, 8, 8, 16, 8, 24, 8, 0, 16, 32, 8 },
{ OSMESA_ARGB, 32, 8, 8, 8, 16, 8, 24, 8, 0, 16, 16, 8 },
{ OSMESA_RGB, 24, 8, 0, 8, 8, 8, 16, 0, 0, 16, 32, 8 },
{ OSMESA_RGB, 24, 8, 0, 8, 8, 8, 16, 0, 0, 16, 16, 8 },
{ OSMESA_BGR, 24, 8, 16, 8, 8, 8, 0, 0, 0, 16, 32, 8 },
{ OSMESA_BGR, 24, 8, 16, 8, 8, 8, 0, 0, 0, 16, 16, 8 },
{ OSMESA_RGB_565, 16, 5, 0, 6, 5, 5, 11, 0, 0, 16, 32, 8 },
{ OSMESA_RGB_565, 16, 5, 0, 6, 5, 5, 11, 0, 0, 16, 16, 8 },
};
static const int nb_formats = sizeof(pixel_formats) / sizeof(pixel_formats[0]);
static BOOL init_opengl(void)
{
static BOOL init_done = FALSE;
static void *osmesa_handle;
char buffer[200];
unsigned int i;
if (init_done) return (osmesa_handle != NULL);
init_done = TRUE;
osmesa_handle = wine_dlopen( SONAME_LIBOSMESA, RTLD_NOW, buffer, sizeof(buffer) );
if (osmesa_handle == NULL)
{
ERR( "Failed to load OSMesa: %s\n", buffer );
return FALSE;
}
#define LOAD_FUNCPTR(f) do if (!(p##f = wine_dlsym( osmesa_handle, #f, buffer, sizeof(buffer) ))) \
{ \
ERR( "%s not found in %s (%s), disabling.\n", #f, SONAME_LIBOSMESA, buffer ); \
goto failed; \
} while(0)
LOAD_FUNCPTR(OSMesaCreateContextExt);
LOAD_FUNCPTR(OSMesaDestroyContext);
LOAD_FUNCPTR(OSMesaGetProcAddress);
LOAD_FUNCPTR(OSMesaMakeCurrent);
LOAD_FUNCPTR(OSMesaPixelStore);
#undef LOAD_FUNCPTR
for (i = 0; i < sizeof(opengl_func_names)/sizeof(opengl_func_names[0]); i++)
{
if (!(((void **)&opengl_funcs.gl)[i] = pOSMesaGetProcAddress( opengl_func_names[i] )))
{
ERR( "%s not found in %s, disabling.\n", opengl_func_names[i], SONAME_LIBOSMESA );
goto failed;
}
}
return TRUE;
failed:
wine_dlclose( osmesa_handle, NULL, 0 );
osmesa_handle = NULL;
return FALSE;
}
/**********************************************************************
* dibdrv_wglDescribePixelFormat
*/
static int dibdrv_wglDescribePixelFormat( HDC hdc, int fmt, UINT size, PIXELFORMATDESCRIPTOR *descr )
{
int ret = sizeof(pixel_formats) / sizeof(pixel_formats[0]);
if (!descr) return ret;
if (fmt <= 0 || fmt > ret) return 0;
if (size < sizeof(*descr)) return 0;
memset( descr, 0, sizeof(*descr) );
descr->nSize = sizeof(*descr);
descr->nVersion = 1;
descr->dwFlags = PFD_SUPPORT_GDI | PFD_SUPPORT_OPENGL | PFD_DRAW_TO_BITMAP | PFD_GENERIC_FORMAT;
descr->iPixelType = PFD_TYPE_RGBA;
descr->cColorBits = pixel_formats[fmt - 1].color_bits;
descr->cRedBits = pixel_formats[fmt - 1].red_bits;
descr->cRedShift = pixel_formats[fmt - 1].red_shift;
descr->cGreenBits = pixel_formats[fmt - 1].green_bits;
descr->cGreenShift = pixel_formats[fmt - 1].green_shift;
descr->cBlueBits = pixel_formats[fmt - 1].blue_bits;
descr->cBlueShift = pixel_formats[fmt - 1].blue_shift;
descr->cAlphaBits = pixel_formats[fmt - 1].alpha_bits;
descr->cAlphaShift = pixel_formats[fmt - 1].alpha_shift;
descr->cAccumBits = pixel_formats[fmt - 1].accum_bits;
descr->cAccumRedBits = pixel_formats[fmt - 1].accum_bits / 4;
descr->cAccumGreenBits = pixel_formats[fmt - 1].accum_bits / 4;
descr->cAccumBlueBits = pixel_formats[fmt - 1].accum_bits / 4;
descr->cAccumAlphaBits = pixel_formats[fmt - 1].accum_bits / 4;
descr->cDepthBits = pixel_formats[fmt - 1].depth_bits;
descr->cStencilBits = pixel_formats[fmt - 1].stencil_bits;
descr->cAuxBuffers = 0;
descr->iLayerType = PFD_MAIN_PLANE;
return ret;
}
/***********************************************************************
* dibdrv_wglCopyContext
*/
static BOOL dibdrv_wglCopyContext( struct wgl_context *src, struct wgl_context *dst, UINT mask )
{
FIXME( "not supported yet\n" );
return FALSE;
}
/***********************************************************************
* dibdrv_wglCreateContext
*/
static struct wgl_context *dibdrv_wglCreateContext( HDC hdc )
{
struct wgl_context *context;
if (!(context = HeapAlloc( GetProcessHeap(), 0, sizeof( *context )))) return NULL;
context->format = GetPixelFormat( hdc );
if (!context->format || context->format > nb_formats) context->format = 1;
if (!(context->context = pOSMesaCreateContextExt( pixel_formats[context->format - 1].mesa,
pixel_formats[context->format - 1].depth_bits,
pixel_formats[context->format - 1].stencil_bits,
pixel_formats[context->format - 1].accum_bits, 0 )))
{
HeapFree( GetProcessHeap(), 0, context );
return NULL;
}
return context;
}
/***********************************************************************
* dibdrv_wglDeleteContext
*/
static BOOL dibdrv_wglDeleteContext( struct wgl_context *context )
{
pOSMesaDestroyContext( context->context );
return HeapFree( GetProcessHeap(), 0, context );
}
/***********************************************************************
* dibdrv_wglGetPixelFormat
*/
static int dibdrv_wglGetPixelFormat( HDC hdc )
{
DC *dc = get_dc_ptr( hdc );
int ret = 0;
if (dc)
{
ret = dc->pixel_format;
release_dc_ptr( dc );
}
return ret;
}
/***********************************************************************
* dibdrv_wglGetProcAddress
*/
static PROC dibdrv_wglGetProcAddress( const char *proc )
{
if (!strncmp( proc, "wgl", 3 )) return NULL;
return (PROC)pOSMesaGetProcAddress( proc );
}
/***********************************************************************
* dibdrv_wglMakeCurrent
*/
static BOOL dibdrv_wglMakeCurrent( HDC hdc, struct wgl_context *context )
{
HBITMAP bitmap;
BITMAPOBJ *bmp;
dib_info dib;
GLenum type;
BOOL ret = FALSE;
if (!context)
{
pOSMesaMakeCurrent( NULL, NULL, GL_UNSIGNED_BYTE, 0, 0 );
return TRUE;
}
if (GetPixelFormat( hdc ) != context->format)
FIXME( "mismatched pixel formats %u/%u not supported yet\n",
GetPixelFormat( hdc ), context->format );
bitmap = GetCurrentObject( hdc, OBJ_BITMAP );
bmp = GDI_GetObjPtr( bitmap, OBJ_BITMAP );
if (!bmp) return FALSE;
if (init_dib_info_from_bitmapobj( &dib, bmp ))
{
char *bits;
int width = dib.rect.right - dib.rect.left;
int height = dib.rect.bottom - dib.rect.top;
if (dib.stride < 0)
bits = (char *)dib.bits.ptr + (dib.rect.bottom - 1) * dib.stride;
else
bits = (char *)dib.bits.ptr + dib.rect.top * dib.stride;
bits += dib.rect.left * dib.bit_count / 8;
TRACE( "context %p bits %p size %ux%u\n", context, bits, width, height );
if (pixel_formats[context->format - 1].mesa == OSMESA_RGB_565)
type = GL_UNSIGNED_SHORT_5_6_5;
else
type = GL_UNSIGNED_BYTE;
ret = pOSMesaMakeCurrent( context->context, bits, type, width, height );
if (ret)
{
pOSMesaPixelStore( OSMESA_ROW_LENGTH, abs( dib.stride ) * 8 / dib.bit_count );
pOSMesaPixelStore( OSMESA_Y_UP, 1 ); /* Windows seems to assume bottom-up */
}
}
GDI_ReleaseObj( bitmap );
return ret;
}
/**********************************************************************
* dibdrv_wglSetPixelFormat
*/
static BOOL dibdrv_wglSetPixelFormat( HDC hdc, int fmt, const PIXELFORMATDESCRIPTOR *descr )
{
if (fmt <= 0 || fmt > nb_formats) return FALSE;
return GdiSetPixelFormat( hdc, fmt, descr );
}
/***********************************************************************
* dibdrv_wglShareLists
*/
static BOOL dibdrv_wglShareLists( struct wgl_context *org, struct wgl_context *dest )
{
FIXME( "not supported yet\n" );
return FALSE;
}
/***********************************************************************
* dibdrv_wglSwapBuffers
*/
static BOOL dibdrv_wglSwapBuffers( HDC hdc )
{
return TRUE;
}
static struct opengl_funcs opengl_funcs =
{
{
dibdrv_wglCopyContext, /* p_wglCopyContext */
dibdrv_wglCreateContext, /* p_wglCreateContext */
dibdrv_wglDeleteContext, /* p_wglDeleteContext */
dibdrv_wglDescribePixelFormat,/* p_wglDescribePixelFormat */
dibdrv_wglGetPixelFormat, /* p_wglGetPixelFormat */
dibdrv_wglGetProcAddress, /* p_wglGetProcAddress */
dibdrv_wglMakeCurrent, /* p_wglMakeCurrent */
dibdrv_wglSetPixelFormat, /* p_wglSetPixelFormat */
dibdrv_wglShareLists, /* p_wglShareLists */
dibdrv_wglSwapBuffers, /* p_wglSwapBuffers */
}
};
/**********************************************************************
* dibdrv_wine_get_wgl_driver
*/
struct opengl_funcs *dibdrv_wine_get_wgl_driver( PHYSDEV dev, UINT version )
{
if (version != WINE_WGL_DRIVER_VERSION)
{
ERR( "version mismatch, opengl32 wants %u but dibdrv has %u\n", version, WINE_WGL_DRIVER_VERSION );
return NULL;
}
if (!init_opengl()) return (void *)-1;
return &opengl_funcs;
}
#else /* SONAME_LIBOSMESA */
/**********************************************************************
* dibdrv_wine_get_wgl_driver
*/
struct opengl_funcs *dibdrv_wine_get_wgl_driver( PHYSDEV dev, UINT version )
{
static int warned;
if (!warned++) ERR( "OSMesa not compiled in, no OpenGL bitmap support\n" );
return (void *)-1;
}
#endif /* SONAME_LIBOSMESA */