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SDL_RenderTexture() and SDL_RenderTextureRotated() take floating point source coordinates

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See the discussion at https://discourse.libsdl.org/t/sdl-rendercopyf-uses-ints/36732/8
This commit is contained in:
Sam Lantinga
2023-03-02 08:56:54 -08:00
parent 199a7af296
commit bd2e2ee7aa
9 changed files with 82 additions and 75 deletions
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15
src/render/software/SDL_render_sw.c
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@@ -227,7 +227,7 @@ static int SW_QueueFillRects(SDL_Renderer *renderer, SDL_RenderCommand *cmd, con
}
static int SW_QueueCopy(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
const SDL_Rect *srcrect, const SDL_FRect *dstrect)
const SDL_FRect *srcrect, const SDL_FRect *dstrect)
{
SDL_Rect *verts = (SDL_Rect *)SDL_AllocateRenderVertices(renderer, 2 * sizeof(SDL_Rect), 0, &cmd->data.draw.first);
@@ -237,7 +237,10 @@ static int SW_QueueCopy(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Text
cmd->data.draw.count = 1;
SDL_copyp(verts, srcrect);
verts->x = (int)srcrect->x;
verts->y = (int)srcrect->y;
verts->w = (int)srcrect->w;
verts->h = (int)srcrect->h;
verts++;
verts->x = (int)dstrect->x;
@@ -260,7 +263,7 @@ typedef struct CopyExData
} CopyExData;
static int SW_QueueCopyEx(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
const SDL_Rect *srcrect, const SDL_FRect *dstrect,
const SDL_FRect *srcrect, const SDL_FRect *dstrect,
const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip, float scale_x, float scale_y)
{
CopyExData *verts = (CopyExData *)SDL_AllocateRenderVertices(renderer, sizeof(CopyExData), 0, &cmd->data.draw.first);
@@ -271,8 +274,10 @@ static int SW_QueueCopyEx(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Te
cmd->data.draw.count = 1;
SDL_copyp(&verts->srcrect, srcrect);
verts->srcrect.x = (int)srcrect->x;
verts->srcrect.y = (int)srcrect->y;
verts->srcrect.w = (int)srcrect->w;
verts->srcrect.h = (int)srcrect->h;
verts->dstrect.x = (int)dstrect->x;
verts->dstrect.y = (int)dstrect->y;
verts->dstrect.w = (int)dstrect->w;