Add font smoothing thanks to @Maschell

It seems smoothER, but there may be room for more improvement

src/gui/FreeTypeGX.cpp

@@ -23,6 +23,7 @@
 #include "FreeTypeGX.h"
 #include "video/CVideo.h"
 #include "video/shaders/Texture2DShader.h"
+#include "utils/logger.h"
 
 using namespace std;
 
@@ -369,7 +370,7 @@ int16_t FreeTypeGX::getStyleOffsetHeight(int16_t format, uint16_t pixelSize)
  * @return The number of characters printed.
  */
 
-uint16_t FreeTypeGX::drawText(CVideo *video, int16_t x, int16_t y, int16_t z, const wchar_t *text, int16_t pixelSize, const glm::vec4 & color, uint16_t textStyle, uint16_t textWidth, const float &textBlur, const float &colorBlurIntensity, const glm::vec4 & blurColor)
+uint16_t FreeTypeGX::drawText(CVideo *video, int16_t x, int16_t y, int16_t z, const wchar_t *text, int16_t pixelSize, const glm::vec4 & color, uint16_t textStyle, uint16_t textWidth, const float &textBlur, const float & colorBlurIntensity, const glm::vec4 & blurColor, const float & internalRenderingScale)
 {
 	if (!text)
         return 0;
@@ -389,7 +390,6 @@ uint16_t FreeTypeGX::drawText(CVideo *video, int16_t x, int16_t y, int16_t z, co
 	}
 
 	int i = 0;
-
 	while (text[i])
 	{
 		ftgxCharData* glyphData = cacheGlyphData(text[i], pixelSize);
@@ -400,9 +400,9 @@ uint16_t FreeTypeGX::drawText(CVideo *video, int16_t x, int16_t y, int16_t z, co
 			{
 				FT_Get_Kerning(ftFace, fontData[pixelSize].ftgxCharMap[text[i - 1]].glyphIndex, glyphData->glyphIndex, FT_KERNING_DEFAULT, &pairDelta);
 				x_pos += (pairDelta.x >> 6);
-			}
 
-			copyTextureToFramebuffer(video, glyphData->texture, x_pos + glyphData->renderOffsetX + x_offset, y + glyphData->renderOffsetY - y_offset, z, color, textBlur, colorBlurIntensity, blurColor);
+			}
+			copyTextureToFramebuffer(video, glyphData->texture,x_pos + glyphData->renderOffsetX + x_offset, y + glyphData->renderOffsetY - y_offset, z, color, textBlur, colorBlurIntensity, blurColor,internalRenderingScale);
 
 			x_pos += glyphData->glyphAdvanceX;
 			++printed;
@@ -547,13 +547,13 @@ void FreeTypeGX::getOffset(const wchar_t *text, int16_t pixelSize, uint16_t widt
  * @param screenY   The screen Y coordinate at which to output the rendered texture.
  * @param color Color to apply to the texture.
  */
-void FreeTypeGX::copyTextureToFramebuffer(CVideo *pVideo, GX2Texture *texture, int16_t x, int16_t y, int16_t z, const glm::vec4 & color, const float & defaultBlur, const float & blurIntensity, const glm::vec4 & blurColor)
+void FreeTypeGX::copyTextureToFramebuffer(CVideo *pVideo, GX2Texture *texture, int16_t x, int16_t y, int16_t z, const glm::vec4 & color, const float & defaultBlur, const float & blurIntensity, const glm::vec4 & blurColor, const float & internalRenderingScale)
 {
     static const f32 imageAngle = 0.0f;
-    static const f32 blurScale = 2.0f;
+    static const f32 blurScale = (2.0f/ (internalRenderingScale));
 
-    f32 offsetLeft = 2.0f * ((f32)x + 0.5f * (f32)texture->surface.width) * (f32)pVideo->getWidthScaleFactor();
+    f32 offsetLeft = blurScale * ((f32)x + 0.5f * (f32)texture->surface.width) * (f32)pVideo->getWidthScaleFactor();
-    f32 offsetTop = 2.0f * ((f32)y - 0.5f * (f32)texture->surface.height) * (f32)pVideo->getHeightScaleFactor();
+    f32 offsetTop = blurScale * ((f32)y -  0.5f * (f32)texture->surface.height) * (f32)pVideo->getHeightScaleFactor();
 
     f32 widthScale = blurScale * (f32)texture->surface.width * pVideo->getWidthScaleFactor();
     f32 heightScale = blurScale * (f32)texture->surface.height * pVideo->getHeightScaleFactor();

src/gui/FreeTypeGX.h

@@ -134,14 +134,14 @@ class FreeTypeGX
 		uint16_t cacheGlyphDataComplete(int16_t pixelSize);
 		void loadGlyphData(FT_Bitmap *bmp, ftgxCharData *charData);
 
-		void copyTextureToFramebuffer(CVideo * pVideo, GX2Texture *tex, int16_t screenX, int16_t screenY, int16_t screenZ, const glm::vec4 & color, const float &textBlur, const float &colorBlurIntensity, const glm::vec4 & blurColor);
+		void copyTextureToFramebuffer(CVideo * pVideo, GX2Texture *tex, int16_t screenX, int16_t screenY, int16_t screenZ, const glm::vec4 & color, const float &textBlur, const float &colorBlurIntensity, const glm::vec4 & blurColor, const float & internalRenderingScale);
 
 	public:
 		FreeTypeGX(const uint8_t* fontBuffer, FT_Long bufferSize, bool lastFace = false);
 		~FreeTypeGX();
 
 		uint16_t drawText(CVideo * pVideo, int16_t x, int16_t y, int16_t z, const wchar_t *text, int16_t pixelSize, const glm::vec4 & color,
-                            uint16_t textStyling, uint16_t textWidth, const float &textBlur, const float &colorBlurIntensity, const glm::vec4 & blurColor);
+                            uint16_t textStyling, uint16_t textWidth, const float &textBlur, const float &colorBlurIntensity, const glm::vec4 & blurColor, const float & internalRenderingScale);
 
 		uint16_t getWidth(const wchar_t *text, int16_t pixelSize);
 		uint16_t getCharWidth(const wchar_t wChar, int16_t pixelSize, const wchar_t prevChar = 0x0000);

src/gui/GuiText.cpp

@@ -20,6 +20,7 @@
 
 FreeTypeGX * GuiText::presentFont = NULL;
 int GuiText::presetSize = 28;
+int GuiText::presetInternalRenderingScale = 2.0f; //Lets render the font at the doubled size. This make it even smoother!
 int GuiText::presetMaxWidth = 0xFFFF;
 int GuiText::presetAlignment = ALIGN_CENTER | ALIGN_MIDDLE;
 GX2ColorF32 GuiText::presetColor = (GX2ColorF32){ 1.0f, 1.0f, 1.0f, 1.0f };
@@ -52,6 +53,7 @@ GuiText::GuiText()
 	blurGlowIntensity = 0.0f;
 	blurAlpha = 0.0f;
 	blurGlowColor = glm::vec4(0.0f);
+	internalRenderingScale = presetInternalRenderingScale;
 }
 
 GuiText::GuiText(const char * t, int s, const glm::vec4 & c)
@@ -74,6 +76,7 @@ GuiText::GuiText(const char * t, int s, const glm::vec4 & c)
 	blurGlowIntensity = 0.0f;
 	blurAlpha = 0.0f;
 	blurGlowColor = glm::vec4(0.0f);
+	internalRenderingScale = presetInternalRenderingScale;
 
 	if(t)
 	{
@@ -105,6 +108,7 @@ GuiText::GuiText(const wchar_t * t, int s, const glm::vec4 & c)
 	blurGlowIntensity = 0.0f;
 	blurAlpha = 0.0f;
 	blurGlowColor = glm::vec4(0.0f);
+	internalRenderingScale = presetInternalRenderingScale;
 
 	if(t)
 	{
@@ -141,6 +145,7 @@ GuiText::GuiText(const char * t)
 	blurGlowIntensity = 0.0f;
 	blurAlpha = 0.0f;
 	blurGlowColor = glm::vec4(0.0f);
+	internalRenderingScale = presetInternalRenderingScale;
 
 	if(t)
 	{
@@ -530,16 +535,23 @@ void GuiText::draw(CVideo *pVideo)
 
     color[3] = getAlpha();
     blurGlowColor[3] = blurAlpha * getAlpha();
-	int newSize = size * getScale();
+
+    float finalRenderingScale = 2.0f * internalRenderingScale;
+
+	int newSize = size * getScale() * finalRenderingScale;
+	int normal_size = size * getScale();
 
 	if(newSize != currentSize)
 	{
-		currentSize = newSize;
+		currentSize = normal_size;
 
 		if(text)
-			textWidth = font->getWidth(text, currentSize);
+			textWidth = font->getWidth(text, normal_size);
 	}
 
+	f32 x_pos = getCenterX() * finalRenderingScale;
+	f32 y_pos = getCenterY() * finalRenderingScale;
+
 	if(maxWidth > 0 && maxWidth <= textWidth)
 	{
 		if(wrapMode == DOTTED) // text dotted
@@ -552,11 +564,12 @@ void GuiText::draw(CVideo *pVideo)
                 textDynWidth.resize(textDyn.size());
 
                 for(u32 i = 0; i < textDynWidth.size(); i++)
-                    textDynWidth[i] = font->getWidth(textDyn[i], currentSize);
+                    textDynWidth[i] = font->getWidth(textDyn[i], newSize);
             }
 
+
 			if(textDyn.size() > 0)
-				font->drawText(pVideo, getCenterX(), getCenterY(), getDepth(), textDyn[textDyn.size()-1], currentSize, color, alignment, textDynWidth[textDyn.size()-1], defaultBlur, blurGlowIntensity, blurGlowColor);
+				font->drawText(pVideo, x_pos, y_pos, getDepth(), textDyn[textDyn.size()-1], newSize, color, alignment, textDynWidth[textDyn.size()-1], defaultBlur, blurGlowIntensity, blurGlowColor,finalRenderingScale);
 		}
 
 		else if(wrapMode == SCROLL_HORIZONTAL)
@@ -564,11 +577,12 @@ void GuiText::draw(CVideo *pVideo)
 			scrollText(pVideo->getFrameCount());
 
 			if(textDyn.size() > 0)
-				font->drawText(pVideo, getCenterX(), getCenterY(), getDepth(), textDyn[textDyn.size()-1], currentSize, color, alignment, maxWidth, defaultBlur, blurGlowIntensity, blurGlowColor);
+				font->drawText(pVideo, x_pos, y_pos, getDepth(), textDyn[textDyn.size()-1], newSize, color, alignment, maxWidth*finalRenderingScale, defaultBlur, blurGlowIntensity, blurGlowColor,finalRenderingScale);
+
 		}
 		else if(wrapMode == WRAP)
 		{
-			int lineheight = currentSize + 6;
+			int lineheight = newSize + 6;
 			int yoffset = 0;
 			int voffset = 0;
 
@@ -580,7 +594,7 @@ void GuiText::draw(CVideo *pVideo)
                 textDynWidth.resize(textDyn.size());
 
                 for(u32 i = 0; i < textDynWidth.size(); i++)
-                    textDynWidth[i] = font->getWidth(textDyn[i], currentSize);
+                    textDynWidth[i] = font->getWidth(textDyn[i], newSize);
             }
 
 			if(alignment & ALIGN_MIDDLE)
@@ -588,13 +602,14 @@ void GuiText::draw(CVideo *pVideo)
 
 			for(u32 i = 0; i < textDyn.size(); i++)
 			{
-				font->drawText(pVideo, getCenterX(), getCenterY() + voffset + yoffset, getDepth(), textDyn[i], currentSize, color, alignment, textDynWidth[i], defaultBlur, blurGlowIntensity, blurGlowColor);
+				font->drawText(pVideo, x_pos, y_pos + voffset + yoffset, getDepth(), textDyn[i], newSize, color, alignment, textDynWidth[i], defaultBlur, blurGlowIntensity, blurGlowColor,finalRenderingScale);
                 yoffset -= lineheight;
 			}
 		}
 	}
 	else
 	{
-		font->drawText(pVideo, getCenterX(), getCenterY(), getDepth(), text, currentSize, color, alignment, textWidth, defaultBlur, blurGlowIntensity, blurGlowColor);
+	    uint16_t newtextWidth = font->getWidth(text, newSize);
+		font->drawText(pVideo, x_pos, y_pos, getDepth(), text, newSize, color, alignment, newtextWidth, defaultBlur, blurGlowIntensity, blurGlowColor,finalRenderingScale);
 	}
 }

src/gui/GuiText.h

@@ -104,6 +104,7 @@ protected:
     static FreeTypeGX * presentFont;
     static int presetSize;
     static int presetMaxWidth;
+    static int presetInternalRenderingScale;
     static int presetAlignment;
     static GX2ColorF32 presetColor;
 
@@ -134,6 +135,7 @@ protected:
     float blurGlowIntensity;
     float blurAlpha;
     glm::vec4 blurGlowColor;
+    float internalRenderingScale;
 };
 
 #endif