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Diffstat (limited to '3rdparty/SDL2/src/render/software/SDL_drawline.c')
-rw-r--r--3rdparty/SDL2/src/render/software/SDL_drawline.c209
1 files changed, 0 insertions, 209 deletions
diff --git a/3rdparty/SDL2/src/render/software/SDL_drawline.c b/3rdparty/SDL2/src/render/software/SDL_drawline.c
deleted file mode 100644
index fd50ea748b0..00000000000
--- a/3rdparty/SDL2/src/render/software/SDL_drawline.c
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
- 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.
-*/
-#include "../../SDL_internal.h"
-
-#if !SDL_RENDER_DISABLED
-
-#include "SDL_draw.h"
-#include "SDL_drawline.h"
-#include "SDL_drawpoint.h"
-
-
-static void
-SDL_DrawLine1(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color,
- SDL_bool draw_end)
-{
- if (y1 == y2) {
- int length;
- int pitch = (dst->pitch / dst->format->BytesPerPixel);
- Uint8 *pixel;
- if (x1 <= x2) {
- pixel = (Uint8 *)dst->pixels + y1 * pitch + x1;
- length = draw_end ? (x2-x1+1) : (x2-x1);
- } else {
- pixel = (Uint8 *)dst->pixels + y1 * pitch + x2;
- if (!draw_end) {
- ++pixel;
- }
- length = draw_end ? (x1-x2+1) : (x1-x2);
- }
- SDL_memset(pixel, color, length);
- } else if (x1 == x2) {
- VLINE(Uint8, DRAW_FASTSETPIXEL1, draw_end);
- } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
- DLINE(Uint8, DRAW_FASTSETPIXEL1, draw_end);
- } else {
- BLINE(x1, y1, x2, y2, DRAW_FASTSETPIXELXY1, draw_end);
- }
-}
-
-static void
-SDL_DrawLine2(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color,
- SDL_bool draw_end)
-{
- if (y1 == y2) {
- HLINE(Uint16, DRAW_FASTSETPIXEL2, draw_end);
- } else if (x1 == x2) {
- VLINE(Uint16, DRAW_FASTSETPIXEL2, draw_end);
- } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
- DLINE(Uint16, DRAW_FASTSETPIXEL2, draw_end);
- } else {
- Uint8 _r, _g, _b, _a;
- const SDL_PixelFormat * fmt = dst->format;
- SDL_GetRGBA(color, fmt, &_r, &_g, &_b, &_a);
- if (fmt->Rmask == 0x7C00) {
- AALINE(x1, y1, x2, y2,
- DRAW_FASTSETPIXELXY2, DRAW_SETPIXELXY_BLEND_RGB555,
- draw_end);
- } else if (fmt->Rmask == 0xF800) {
- AALINE(x1, y1, x2, y2,
- DRAW_FASTSETPIXELXY2, DRAW_SETPIXELXY_BLEND_RGB565,
- draw_end);
- } else {
- AALINE(x1, y1, x2, y2,
- DRAW_FASTSETPIXELXY2, DRAW_SETPIXELXY2_BLEND_RGB,
- draw_end);
- }
- }
-}
-
-static void
-SDL_DrawLine4(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color,
- SDL_bool draw_end)
-{
- if (y1 == y2) {
- HLINE(Uint32, DRAW_FASTSETPIXEL4, draw_end);
- } else if (x1 == x2) {
- VLINE(Uint32, DRAW_FASTSETPIXEL4, draw_end);
- } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
- DLINE(Uint32, DRAW_FASTSETPIXEL4, draw_end);
- } else {
- Uint8 _r, _g, _b, _a;
- const SDL_PixelFormat * fmt = dst->format;
- SDL_GetRGBA(color, fmt, &_r, &_g, &_b, &_a);
- if (fmt->Rmask == 0x00FF0000) {
- if (!fmt->Amask) {
- AALINE(x1, y1, x2, y2,
- DRAW_FASTSETPIXELXY4, DRAW_SETPIXELXY_BLEND_RGB888,
- draw_end);
- } else {
- AALINE(x1, y1, x2, y2,
- DRAW_FASTSETPIXELXY4, DRAW_SETPIXELXY_BLEND_ARGB8888,
- draw_end);
- }
- } else {
- AALINE(x1, y1, x2, y2,
- DRAW_FASTSETPIXELXY4, DRAW_SETPIXELXY4_BLEND_RGB,
- draw_end);
- }
- }
-}
-
-typedef void (*DrawLineFunc) (SDL_Surface * dst,
- int x1, int y1, int x2, int y2,
- Uint32 color, SDL_bool draw_end);
-
-static DrawLineFunc
-SDL_CalculateDrawLineFunc(const SDL_PixelFormat * fmt)
-{
- switch (fmt->BytesPerPixel) {
- case 1:
- if (fmt->BitsPerPixel < 8) {
- break;
- }
- return SDL_DrawLine1;
- case 2:
- return SDL_DrawLine2;
- case 4:
- return SDL_DrawLine4;
- }
- return NULL;
-}
-
-int
-SDL_DrawLine(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color)
-{
- DrawLineFunc func;
-
- if (!dst) {
- return SDL_SetError("SDL_DrawLine(): Passed NULL destination surface");
- }
-
- func = SDL_CalculateDrawLineFunc(dst->format);
- if (!func) {
- return SDL_SetError("SDL_DrawLine(): Unsupported surface format");
- }
-
- /* Perform clipping */
- /* FIXME: We don't actually want to clip, as it may change line slope */
- if (!SDL_IntersectRectAndLine(&dst->clip_rect, &x1, &y1, &x2, &y2)) {
- return 0;
- }
-
- func(dst, x1, y1, x2, y2, color, SDL_TRUE);
- return 0;
-}
-
-int
-SDL_DrawLines(SDL_Surface * dst, const SDL_Point * points, int count,
- Uint32 color)
-{
- int i;
- int x1, y1;
- int x2, y2;
- SDL_bool draw_end;
- DrawLineFunc func;
-
- if (!dst) {
- return SDL_SetError("SDL_DrawLines(): Passed NULL destination surface");
- }
-
- func = SDL_CalculateDrawLineFunc(dst->format);
- if (!func) {
- return SDL_SetError("SDL_DrawLines(): Unsupported surface format");
- }
-
- for (i = 1; i < count; ++i) {
- x1 = points[i-1].x;
- y1 = points[i-1].y;
- x2 = points[i].x;
- y2 = points[i].y;
-
- /* Perform clipping */
- /* FIXME: We don't actually want to clip, as it may change line slope */
- if (!SDL_IntersectRectAndLine(&dst->clip_rect, &x1, &y1, &x2, &y2)) {
- continue;
- }
-
- /* Draw the end if it was clipped */
- draw_end = (x2 != points[i].x || y2 != points[i].y);
-
- func(dst, x1, y1, x2, y2, color, draw_end);
- }
- if (points[0].x != points[count-1].x || points[0].y != points[count-1].y) {
- SDL_DrawPoint(dst, points[count-1].x, points[count-1].y, color);
- }
- return 0;
-}
-
-#endif /* !SDL_RENDER_DISABLED */
-
-/* vi: set ts=4 sw=4 expandtab: */