ryujinx/SDL
1
0
Fork 0
mirror of https://github.com/Ryujinx/SDL.git synced 2024-12-23 17:35:34 +00:00
Code Issues Packages Projects Releases Wiki Activity

Make RenderCopyEx rotate around center

Browse source 
This still isn't perfect. The rotation is the wrong way around and the
images are upside down.
This commit is contained in:
Wouter Wijsman 2022-02-08 18:03:11 +01:00 committed by Sam Lantinga
parent 2df2da11f6
commit 2b572dff88
1 changed files with 17 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
src/render/psp/SDL_render_psp.c
View file

@ -891,15 +891,13 @@ PSP_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * t
const float width = dstrect->w - centerx;
const float height = dstrect->h - centery;
float s, c;
float cw, sw, ch, sh;
float cw1, sw1, ch1, sh1, cw2, sw2, ch2, sh2;
float u0 = srcrect->x;
float v0 = srcrect->y;
float u1 = srcrect->x + srcrect->w;
float v1 = srcrect->y + srcrect->h;
if (!verts) {
return -1;
}
@ -908,10 +906,14 @@ PSP_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * t
MathSincos(degToRad(angle), &s, &c);
cw = c * width;
sw = s * width;
ch = c * height;
sh = s * height;
cw1 = c * width;
sw1 = s * width;
ch1 = c * height;
sh1 = s * height;
cw2 = c * -centerx;
sw2 = s * -centerx;
ch2 = c * -centery;
sh2 = s * -centery;
if (flip & SDL_FLIP_VERTICAL) {
Swap(&v0, &v1);
@ -923,29 +925,29 @@ PSP_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * t
verts->u = u0;
verts->v = v0;
verts->x = x - cw + sh;
verts->y = y - sw - ch;
verts->x = x + cw1 + sh1;
verts->y = y - sw1 + ch1;
verts->z = 0;
verts++;
verts->u = u0;
verts->v = v1;
verts->x = x - cw - sh;
verts->y = y - sw + ch;
verts->x = x + cw1 + sh2;
verts->y = y - sw1 + ch2;
verts->z = 0;
verts++;
verts->u = u1;
verts->v = v1;
verts->x = x + cw - sh;
verts->y = y + sw + ch;
verts->x = x + cw2 + sh2;
verts->y = y - sw2 + ch2;
verts->z = 0;
verts++;
verts->u = u1;
verts->v = v0;
verts->x = x + cw + sh;
verts->y = y + sw - ch;
verts->x = x + cw2 + sh1;
verts->y = y - sw2 + ch1;
verts->z = 0;
verts++;