diff options
Diffstat (limited to 'src/gallium/winsys/gdi/gdi_sw_winsys.c')
| -rw-r--r-- | src/gallium/winsys/gdi/gdi_sw_winsys.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/gallium/winsys/gdi/gdi_sw_winsys.c b/src/gallium/winsys/gdi/gdi_sw_winsys.c new file mode 100644 index 0000000000..00c6facd04 --- /dev/null +++ b/src/gallium/winsys/gdi/gdi_sw_winsys.c @@ -0,0 +1,214 @@ +/************************************************************************** + * + * 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 "util/u_inlines.h" +#include "util/u_format.h" +#include "util/u_math.h" +#include "util/u_memory.h" +#include "state_tracker/sw_winsys.h" +#include "stw_winsys.h" + + +struct gdi_sw_displaytarget +{ + enum pipe_format format; + unsigned width; + unsigned height; + unsigned stride; + + unsigned size; + + void *data; + + BITMAPINFO bmi; +}; + + +/** Cast wrapper */ +static INLINE struct gdi_sw_displaytarget * +gdi_sw_displaytarget( struct sw_displaytarget *buf ) +{ + return (struct gdi_sw_displaytarget *)buf; +} + + +static boolean +gdi_sw_is_displaytarget_format_supported( struct sw_winsys *ws, + enum pipe_format format ) +{ + switch(format) { + case PIPE_FORMAT_B8G8R8X8_UNORM: + case PIPE_FORMAT_B8G8R8A8_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_sw_displaytarget_map(struct sw_winsys *ws, + struct sw_displaytarget *dt, + unsigned flags ) +{ + struct gdi_sw_displaytarget *gdt = gdi_sw_displaytarget(dt); + + return gdt->data; +} + + +static void +gdi_sw_displaytarget_unmap(struct sw_winsys *ws, + struct sw_displaytarget *dt ) +{ + +} + + +static void +gdi_sw_displaytarget_destroy(struct sw_winsys *winsys, + struct sw_displaytarget *dt) +{ + struct gdi_sw_displaytarget *gdt = gdi_sw_displaytarget(dt); + + align_free(gdt->data); + FREE(gdt); +} + + +static struct sw_displaytarget * +gdi_sw_displaytarget_create(struct sw_winsys *winsys, + enum pipe_format format, + unsigned width, unsigned height, + unsigned alignment, + unsigned *stride) +{ + struct gdi_sw_displaytarget *gdt; + unsigned cpp; + unsigned bpp; + + gdt = CALLOC_STRUCT(gdi_sw_displaytarget); + if(!gdt) + goto no_gdt; + + gdt->format = format; + gdt->width = width; + gdt->height = height; + + bpp = util_format_get_blocksizebits(format); + cpp = util_format_get_blocksize(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 sw_displaytarget *)gdt; + +no_data: + FREE(gdt); +no_gdt: + return NULL; +} + + +static void +gdi_sw_displaytarget_display(struct sw_winsys *winsys, + struct sw_displaytarget *dt, + void *context_private) +{ + struct gdi_softpipe_displaytarget *gdt = gdi_sw_displaytarget(dt); + + /* nasty: + */ + HDC hDC = (HDC)context_private; + + StretchDIBits(hDC, + 0, 0, gdt->width, gdt->height, + 0, 0, gdt->width, gdt->height, + gdt->data, &gdt->bmi, 0, SRCCOPY); +} + + +static void +gdi_sw_destroy(struct sw_winsys *winsys) +{ + FREE(winsys); +} + +struct sw_winsys * +gdi_create_sw_winsys(void) +{ + static struct sw_winsys *winsys; + + winsys = CALLOC_STRUCT(sw_winsys); + if(!winsys) + return NULL; + + winsys->destroy = gdi_sw_destroy; + winsys->is_displaytarget_format_supported = gdi_sw_is_displaytarget_format_supported; + winsys->displaytarget_create = gdi_sw_displaytarget_create; + winsys->displaytarget_map = gdi_sw_displaytarget_map; + winsys->displaytarget_unmap = gdi_sw_displaytarget_unmap; + winsys->displaytarget_display = gdi_sw_displaytarget_display; + winsys->displaytarget_destroy = gdi_sw_displaytarget_destroy; + + return winsys; +} + |