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Properly implement the blending

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This commit is contained in:
Maschell 2020-09-05 12:39:16 +02:00
parent 693c3184c3
commit 1401714462
3 changed files with 21 additions and 6 deletions
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5
src/gui/GuiText.cpp
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@ -76,7 +76,10 @@ void GuiText::updateTexture(Renderer *renderer) {
textureData->setBlendMode(SDL_BLENDMODE_BLEND);
texture.setTexture(textureData);
FC_DrawColumnToTexture(fc_font, temp, 0, 0, maxWidth, text.c_str());
SDL_SetRenderTarget(renderer->getRenderer(), temp);
SDL_RenderClear(renderer->getRenderer());
FC_DrawColumn(fc_font, renderer->getRenderer(), 0, 0, maxWidth, text.c_str());
SDL_SetRenderTarget(renderer->getRenderer(), NULL);
} else {
DEBUG_FUNCTION_LINE("Failed to create texture");
}

21
src/gui/GuiTextureData.cpp
View File

@ -24,11 +24,8 @@ GuiTextureData::GuiTextureData(SDL_Texture *texture) {
SDL_QueryTexture(this->texture, nullptr, nullptr, &w, &h);
this->width = w;
this->height = h;
}
void GuiTextureData::loadSurface(SDL_Surface *pSurface) {
if(!pSurface){
return;
@ -74,14 +71,28 @@ void GuiTextureData::draw(Renderer *renderer, const SDL_Rect& dest, float angle)
return;
}
// copy the texture to the rendering context
SDL_BlendMode mode;
SDL_GetRenderDrawBlendMode(renderer->getRenderer(), &mode);
// adjust blend mode
if(blendMode != mode){
SDL_SetRenderDrawBlendMode(renderer->getRenderer(), blendMode);
}
if (angle == 0) {
SDL_RenderCopy(renderer->getRenderer(), texture, nullptr, &dest);
} else {
SDL_RenderCopyEx(renderer->getRenderer(), texture, nullptr, &dest, angle, nullptr, SDL_FLIP_NONE);
}
if(blendMode != mode){
SDL_SetRenderDrawBlendMode(renderer->getRenderer(), mode);
}
}
int GuiTextureData::setBlendMode(SDL_BlendMode) {
if(texture){ return SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND); }
int GuiTextureData::setBlendMode(SDL_BlendMode blendMode) {
this->blendMode = blendMode;
if(texture){ return SDL_SetTextureBlendMode(texture, blendMode); }
return SDL_BLENDMODE_INVALID;
}

1
src/gui/GuiTextureData.h
View File

@ -37,4 +37,5 @@ protected:
SDL_Texture *texture = nullptr;
int32_t width = 0;
int32_t height = 0;
SDL_BlendMode blendMode;
};