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sdl/texture: Set filtering mode when creating from surface

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Defaults to nearest-neighbour interpolation.
This commit is contained in:
Tommy 2022-06-17 21:58:56 +12:00
parent 1b0fdeecad
commit c466323808
2 changed files with 16 additions and 3 deletions
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6
src/sdl/texture.cpp
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@ -54,7 +54,7 @@ texture::texture(SDL_Texture* txt)
}
}
texture::texture(const surface& surf)
texture::texture(const surface& surf, bool linear_interpolation)
: texture()
{
if (!surf) {
@ -70,6 +70,10 @@ texture::texture(const surface& surf)
return;
}
// Filtering mode must be set before texture creation.
const char* scale_quality = linear_interpolation ? "linear" : "nearest";
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, scale_quality);
texture_.reset(SDL_CreateTextureFromSurface(renderer, surf), &cleanup_texture);
if(!texture_) {
ERR_SDL << "When creating texture from surface: " << SDL_GetError() << std::endl;

13
src/sdl/texture.hpp
View file

@ -36,8 +36,17 @@ public:
/** Assigns the given texture to this one. */
explicit texture(SDL_Texture* txt);
/** Construct a texture from a surface. */
explicit texture(const surface& surf);
/**
* Construct a texture from a surface.
*
* @param surf The surface to copy.
* @param linear_interpolation If true this texture will use linear
* interpolation when drawing. Otherwise
* nearest-neighbour interpolation is used.
* This does not affect texture creation,
* only later application.
*/
explicit texture(const surface& surf, bool linear_interpolation = false);
/** Construct a texture of the specified size and access type. */
texture(int w, int h, SDL_TextureAccess access);