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63724c113b
Vim users can use the [editorconfig plugin](https://github.com/editorconfig/editorconfig-vim) to automatically set tab spacing for the SDL coding style. Fixes https://github.com/libsdl-org/SDL/issues/6903
110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#if SDL_VIDEO_RENDER_SW && !SDL_RENDER_DISABLED
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#include "SDL_draw.h"
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#include "SDL_drawpoint.h"
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int SDL_DrawPoint(SDL_Surface *dst, int x, int y, Uint32 color)
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{
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if (dst == NULL) {
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return SDL_InvalidParamError("SDL_DrawPoint(): dst");
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}
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/* This function doesn't work on surfaces < 8 bpp */
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if (dst->format->BitsPerPixel < 8) {
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return SDL_SetError("SDL_DrawPoint(): Unsupported surface format");
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}
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/* Perform clipping */
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if (x < dst->clip_rect.x || y < dst->clip_rect.y ||
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x >= (dst->clip_rect.x + dst->clip_rect.w) ||
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y >= (dst->clip_rect.y + dst->clip_rect.h)) {
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return 0;
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}
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switch (dst->format->BytesPerPixel) {
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case 1:
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DRAW_FASTSETPIXELXY1(x, y);
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break;
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case 2:
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DRAW_FASTSETPIXELXY2(x, y);
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break;
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case 3:
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return SDL_Unsupported();
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case 4:
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DRAW_FASTSETPIXELXY4(x, y);
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break;
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}
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return 0;
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}
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int SDL_DrawPoints(SDL_Surface *dst, const SDL_Point *points, int count,
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Uint32 color)
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{
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int minx, miny;
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int maxx, maxy;
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int i;
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int x, y;
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if (dst == NULL) {
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return SDL_InvalidParamError("SDL_DrawPoints(): dst");
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}
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/* This function doesn't work on surfaces < 8 bpp */
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if (dst->format->BitsPerPixel < 8) {
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return SDL_SetError("SDL_DrawPoints(): Unsupported surface format");
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}
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minx = dst->clip_rect.x;
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maxx = dst->clip_rect.x + dst->clip_rect.w - 1;
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miny = dst->clip_rect.y;
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maxy = dst->clip_rect.y + dst->clip_rect.h - 1;
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for (i = 0; i < count; ++i) {
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x = points[i].x;
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y = points[i].y;
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if (x < minx || x > maxx || y < miny || y > maxy) {
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continue;
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}
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switch (dst->format->BytesPerPixel) {
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case 1:
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DRAW_FASTSETPIXELXY1(x, y);
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break;
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case 2:
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DRAW_FASTSETPIXELXY2(x, y);
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break;
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case 3:
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return SDL_Unsupported();
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case 4:
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DRAW_FASTSETPIXELXY4(x, y);
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break;
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}
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}
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return 0;
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}
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#endif /* SDL_VIDEO_RENDER_SW && !SDL_RENDER_DISABLED */
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