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Added the SDL_HINT_RENDER_SCALE_QUALITY hint, which defaults to nearest pixel sampling.

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This commit is contained in:
Sam Lantinga 2011-03-13 11:18:35 -07:00
parent fbc49beee3
commit a19e258730
5 changed files with 79 additions and 9 deletions
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30
src/render/direct3d/SDL_render_d3d.c
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@ -26,6 +26,7 @@
#include "../../core/windows/SDL_windows.h"
#include "SDL_hints.h"
#include "SDL_loadso.h"
#include "SDL_syswm.h"
#include "../SDL_sysrender.h"
@ -137,11 +138,13 @@ typedef struct
D3DPRESENT_PARAMETERS pparams;
SDL_bool updateSize;
SDL_bool beginScene;
D3DTEXTUREFILTERTYPE scaleMode;
} D3D_RenderData;
typedef struct
{
IDirect3DTexture9 *texture;
D3DTEXTUREFILTERTYPE scaleMode;
} D3D_TextureData;
typedef struct
@ -451,6 +454,7 @@ D3D_CreateRenderer(SDL_Window * window, Uint32 flags)
return NULL;
}
data->beginScene = SDL_TRUE;
data->scaleMode = D3DTEXF_FORCE_DWORD;
/* Get presentation parameters to fill info */
result = IDirect3DDevice9_GetSwapChain(data->device, 0, &chain);
@ -537,6 +541,20 @@ D3D_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
}
}
static D3DTEXTUREFILTERTYPE
GetScaleQuality(void)
{
const char *hint = SDL_GetHint(SDL_HINT_RENDER_SCALE_QUALITY);
if (!hint || *hint == '0' || SDL_strcasecmp(hint, "nearest") == 0) {
return D3DTEXF_POINT;
} else if (*hint == '1' || SDL_strcasecmp(hint, "linear") == 0) {
return D3DTEXF_LINEAR;
} else {
return D3DTEXF_ANISOTROPIC;
}
}
static int
D3D_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
@ -553,6 +571,7 @@ D3D_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
SDL_OutOfMemory();
return -1;
}
data->scaleMode = GetScaleQuality();
texture->driverdata = data;
@ -1018,10 +1037,13 @@ D3D_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
D3D_SetBlendMode(data, texture->blendMode);
IDirect3DDevice9_SetSamplerState(data->device, 0, D3DSAMP_MINFILTER,
D3DTEXF_LINEAR);
IDirect3DDevice9_SetSamplerState(data->device, 0, D3DSAMP_MAGFILTER,
D3DTEXF_LINEAR);
if (texturedata->scaleMode != data->scaleMode) {
IDirect3DDevice9_SetSamplerState(data->device, 0, D3DSAMP_MINFILTER,
texturedata->scaleMode);
IDirect3DDevice9_SetSamplerState(data->device, 0, D3DSAMP_MAGFILTER,
texturedata->scaleMode);
data->scaleMode = texturedata->scaleMode;
}
result =
IDirect3DDevice9_SetTexture(data->device, 0, (IDirect3DBaseTexture9 *)