Added Font to ResourceManager

2015-12-11 16:53:51 +01:00
parent a8a38716bd
commit 9bd3da409d
7 changed files with 113 additions and 76 deletions
@@ -0,0 +1,73 @@
+#include "Rendering/Font.h"
+
+
+Font::Font(std::string path)
+{
+    FT_Library library;
+    FT_Face face;
+
+    if (FT_Init_FreeType(&library)) {
+        LOG_ERROR("FreeType error: init failed");
+    }
+
+    if (FT_New_Face(library, path.c_str(), 0, &face)) {
+        LOG_ERROR("FreeType error: loading font");
+    }
+
+    FT_Set_Pixel_Sizes(face, 0, 48);
+
+    if (FT_Load_Char(face, 'X', FT_LOAD_RENDER)) {
+        LOG_ERROR("FreeType error: loading char");
+    }
+
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+    for (GLubyte c = 0; c < 128; c++) {
+        //Load character glyph
+        if (FT_Load_Char(face, c, FT_LOAD_RENDER)) {
+            continue;
+        }
+        printf("Char: %c\n", c);
+        //Generate texture
+        GLuint texture;
+        glGenTextures(1, &texture);
+        glBindTexture(GL_TEXTURE_2D, texture);
+
+        glTexImage2D(
+            GL_TEXTURE_2D,
+            0,
+            GL_RED,
+            face->glyph->bitmap.width,
+            face->glyph->bitmap.rows,
+            0,
+            GL_RED,
+            GL_UNSIGNED_BYTE,
+            face->glyph->bitmap.buffer
+            );
+        // Set texture options
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        // Now store character for later use
+        Character character = {
+            texture,
+            glm::ivec2(face->glyph->bitmap.width, face->glyph->bitmap.rows),
+            glm::ivec2(face->glyph->bitmap_left, face->glyph->bitmap_top),
+            face->glyph->advance.x
+        };
+
+        m_Characters.insert(std::pair<GLchar, Character>(c, character));
+    }
+
+    FT_Done_Face(face);
+    FT_Done_FreeType(library);
+    GLERROR("Font Load");
+}
+
+Font::~Font()
+{
+    for (auto c : m_Characters) {
+        glDeleteTextures(1, &c.second.TextureID);
+    }
+}