/************************************************************************** * * 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 * GDI software rasterizer 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 "gdi_sw_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, unsigned tex_usage, 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, unsigned tex_usage, 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 struct sw_displaytarget * gdi_sw_displaytarget_from_handle(struct sw_winsys *winsys, const struct pipe_resource *templet, struct winsys_handle *whandle, unsigned *stride) { assert(0); return NULL; } static boolean gdi_sw_displaytarget_get_handle(struct sw_winsys *winsys, struct sw_displaytarget *dt, struct winsys_handle *whandle) { assert(0); return FALSE; } void gdi_sw_display( struct sw_winsys *winsys, struct sw_displaytarget *dt, HDC hDC ) { struct gdi_sw_displaytarget *gdt = gdi_sw_displaytarget(dt); StretchDIBits(hDC, 0, 0, gdt->width, gdt->height, 0, 0, gdt->width, gdt->height, gdt->data, &gdt->bmi, 0, SRCCOPY); } static void gdi_sw_displaytarget_display(struct sw_winsys *winsys, struct sw_displaytarget *dt, void *context_private) { /* nasty: */ HDC hDC = (HDC)context_private; gdi_sw_display(winsys, dt, hDC); } 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_from_handle = gdi_sw_displaytarget_from_handle; winsys->displaytarget_get_handle = gdi_sw_displaytarget_get_handle; 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; }