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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 |
| * 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; |
| } |
| |