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add in High DPI support (aka Retina)

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- based on J?rgen's patch with a few bug fixes
This commit is contained in:
Edward Rudd
2013-09-20 13:43:00 -04:00
parent 0103bc0bff
commit 869a707612
12 changed files with 134 additions and 11 deletions
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11
src/render/SDL_render.c
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@@ -117,7 +117,12 @@ SDL_RendererEventWatch(void *userdata, SDL_Event *event)
/* Window was resized, reset viewport */
int w, h;
SDL_GetWindowSize(window, &w, &h);
if (renderer->GetOutputSize) {
renderer->GetOutputSize(renderer, &w, &h);
} else {
SDL_GetWindowSize(renderer->window, &w, &h);
}
if (renderer->target) {
renderer->viewport_backup.x = 0;
renderer->viewport_backup.y = 0;
@@ -335,11 +340,11 @@ SDL_GetRendererOutputSize(SDL_Renderer * renderer, int *w, int *h)
if (renderer->target) {
return SDL_QueryTexture(renderer->target, NULL, NULL, w, h);
} else if (renderer->GetOutputSize) {
return renderer->GetOutputSize(renderer, w, h);
} else if (renderer->window) {
SDL_GetWindowSize(renderer->window, w, h);
return 0;
} else if (renderer->GetOutputSize) {
return renderer->GetOutputSize(renderer, w, h);
} else {
/* This should never happen */
SDL_SetError("Renderer doesn't support querying output size");

10
src/render/opengl/SDL_render_gl.c
View File

@@ -47,6 +47,7 @@ static const float inv255f = 1.0f / 255.0f;
static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags);
static void GL_WindowEvent(SDL_Renderer * renderer,
const SDL_WindowEvent *event);
static int GL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h);
static int GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels,
@@ -399,6 +400,7 @@ GL_CreateRenderer(SDL_Window * window, Uint32 flags)
}
renderer->WindowEvent = GL_WindowEvent;
renderer->GetOutputSize = GL_GetOutputSize;
renderer->CreateTexture = GL_CreateTexture;
renderer->UpdateTexture = GL_UpdateTexture;
renderer->LockTexture = GL_LockTexture;
@@ -539,6 +541,14 @@ GL_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
}
}
static int
GL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h)
{
SDL_GL_GetDrawableSize(renderer->window, w, h);
return 0;
}
SDL_FORCE_INLINE int
power_of_2(int input)
{