| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| |
| /* |
| Contributed by Brandon Schaefer, <brandon.schaefer@canonical.com> |
| */ |
| |
| #include "../../SDL_internal.h" |
| |
| #if SDL_VIDEO_DRIVER_MIR |
| |
| #include "SDL_mirevents.h" |
| #include "SDL_mirframebuffer.h" |
| #include "SDL_mirwindow.h" |
| |
| #include "SDL_mirdyn.h" |
| |
| int |
| MIR_CreateWindowFramebuffer(_THIS, SDL_Window* window, Uint32* format, |
| void** pixels, int* pitch) |
| { |
| MIR_Data* mir_data = _this->driverdata; |
| |
| mir_data->software = SDL_TRUE; |
| |
| if (MIR_CreateWindow(_this, window) < 0) |
| return SDL_SetError("Failed to created a mir window."); |
| |
| *format = MIR_GetSDLPixelFormat(mir_data->pixel_format); |
| if (*format == SDL_PIXELFORMAT_UNKNOWN) |
| return SDL_SetError("Unknown pixel format"); |
| |
| *pitch = (((window->w * SDL_BYTESPERPIXEL(*format)) + 3) & ~3); |
| |
| *pixels = SDL_malloc(window->h*(*pitch)); |
| if (*pixels == NULL) |
| return SDL_OutOfMemory(); |
| |
| return 0; |
| } |
| |
| int |
| MIR_UpdateWindowFramebuffer(_THIS, SDL_Window* window, |
| const SDL_Rect* rects, int numrects) |
| { |
| MIR_Window* mir_window = window->driverdata; |
| |
| MirGraphicsRegion region; |
| MirBufferStream* bs; |
| int i, j, x, y, w, h, start; |
| int bytes_per_pixel, bytes_per_row, s_stride, d_stride; |
| char* s_dest; |
| char* pixels; |
| |
| bs = MIR_mir_surface_get_buffer_stream(mir_window->surface); |
| MIR_mir_buffer_stream_get_graphics_region(bs, ®ion); |
| |
| s_dest = region.vaddr; |
| pixels = (char*)window->surface->pixels; |
| |
| s_stride = window->surface->pitch; |
| d_stride = region.stride; |
| bytes_per_pixel = window->surface->format->BytesPerPixel; |
| |
| for (i = 0; i < numrects; i++) { |
| s_dest = region.vaddr; |
| pixels = (char*)window->surface->pixels; |
| |
| x = rects[i].x; |
| y = rects[i].y; |
| w = rects[i].w; |
| h = rects[i].h; |
| |
| if (w <= 0 || h <= 0 || (x + w) <= 0 || (y + h) <= 0) |
| continue; |
| |
| if (x < 0) { |
| x += w; |
| w += rects[i].x; |
| } |
| |
| if (y < 0) { |
| y += h; |
| h += rects[i].y; |
| } |
| |
| if (x + w > window->w) |
| w = window->w - x; |
| if (y + h > window->h) |
| h = window->h - y; |
| |
| start = y * s_stride + x; |
| pixels += start; |
| s_dest += start; |
| |
| bytes_per_row = bytes_per_pixel * w; |
| for (j = 0; j < h; j++) { |
| SDL_memcpy(s_dest, pixels, bytes_per_row); |
| pixels += s_stride; |
| s_dest += d_stride; |
| } |
| } |
| |
| MIR_mir_buffer_stream_swap_buffers_sync(bs); |
| |
| return 0; |
| } |
| |
| void |
| MIR_DestroyWindowFramebuffer(_THIS, SDL_Window* window) |
| { |
| } |
| |
| #endif /* SDL_VIDEO_DRIVER_MIR */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |