Elysian Shadows

Code: Select all

    void FontRenderable::Render()
    {
#if 0
        // Draw the vertex buffers.
        std::map<std::string, GLuint>::const_iterator iterator;
        for (iterator = mHandles.begin()
            ; iterator != mHandles.end()
            ; ++iterator)
        {
            glDisable(GL_TEXTURE_2D);

            glBindBuffer(GL_ARRAY_BUFFER, iterator->second);

            // Configure the vertex state.
            glEnableClientState(GL_VERTEX_ARRAY);
            glVertexPointer(2, GL_FLOAT, sizeof Vertex, reinterpret_cast<GLvoid*>(0));

            // Configure the color state.
            glEnableClientState(GL_COLOR_ARRAY);
            glColorPointer(4, GL_UNSIGNED_BYTE, sizeof Vertex, reinterpret_cast<GLvoid*>(8));

            // Configure the texture state if this is not the underline buffer.
            if (iterator->first != "__underline__")
            {
                glEnable(GL_TEXTURE_2D);
                mFamily.Face(iterator->first).Texture().Active(true);
                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
                glTexCoordPointer(2, GL_FLOAT, sizeof Vertex, reinterpret_cast<GLvoid*>(12));
            }

            glDrawElements(GL_QUADS, mIndices[iterator->first].size(), GL_UNSIGNED_INT, &mIndices[iterator->first][0]);

            // Disable the states.
            glDisableClientState(GL_TEXTURE_COORD_ARRAY);
            glDisableClientState(GL_COLOR_ARRAY);
            glDisableClientState(GL_VERTEX_ARRAY);
        }

        glEnable(GL_TEXTURE_2D);
#else
        // Configure the vertex state.
        glEnableClientState(GL_VERTEX_ARRAY);
        glVertexPointer(2, GL_FLOAT, sizeof Vertex, reinterpret_cast<GLvoid*>(0));

        // Configure the color state.
        glEnableClientState(GL_COLOR_ARRAY);
        glColorPointer(4, GL_UNSIGNED_BYTE, sizeof Vertex, reinterpret_cast<GLvoid*>(8));

        // Configure the texture state.
        glEnable(GL_TEXTURE_2D);
        glEnableClientState(GL_TEXTURE_COORD_ARRAY);
        glTexCoordPointer(2, GL_FLOAT, sizeof Vertex, reinterpret_cast<GLvoid*>(12));

        // Draw the text buffers.
        std::map<std::string, GLuint>::const_iterator iterator;
        for (iterator = mHandles.begin()
            ; iterator != mHandles.end()
            ; ++iterator)
        {
            // The underline buffer is drawn separately.
            if (iterator->first == "__underline__")
            {
                continue;
            }

            mFamily.Face(iterator->first).Texture().Active(true);
            glBindBuffer(GL_ARRAY_BUFFER, iterator->second);
            glDrawElements(GL_QUADS, mIndices[iterator->first].size(), GL_UNSIGNED_INT, &mIndices[iterator->first][0]);
        }

        // Disable the texture state.
        glDisableClientState(GL_TEXTURE_COORD_ARRAY);
        glDisable(GL_TEXTURE_2D);

        // Draw the underline buffer.
        iterator = mHandles.find("__underline__");
        if (iterator != mHandles.end())
        {
            glBindBuffer(GL_ARRAY_BUFFER, iterator->second);
            glDrawElements(GL_QUADS, mIndices[iterator->first].size(), GL_UNSIGNED_INT, &mIndices[iterator->first][0]);
        }

        // Disable the color and vertex states.
        glDisableClientState(GL_COLOR_ARRAY);
        glDisableClientState(GL_VERTEX_ARRAY);
#endif
    }

Code: Select all

struct Buffer
{
    GLuint IndexCount;
    GLuint VertexHandle;
    GLuint IndexHandle;
    GLuint TextureHandle;
};

glEnable(GL_TEXTURE_2D);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
for (std::map<std::string, Buffer>::const_iterator iterator = mBuffers.begin()
    ; iterator != mBuffers.end()
    ; ++iterator)
{
    glBindTexture(GL_TEXTURE_2D, iterator->second.TextureHandle);
    glBindBuffer(GL_ARRAY_BUFFER, iterator->second.VertexHandle);
    glVertexPointer(2, GL_FLOAT, sizeof Vertex, Pointer(0));
    glColorPointer(4, GL_UNSIGNED_BYTE, sizeof Vertex, Pointer(8));
    glTexCoordPointer(2, GL_FLOAT, sizeof Vertex, Pointer(12));
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, iterator->second.IndexHandle);
    glDrawElements(GL_QUADS, iterator->second.IndexCount, GL_UNSIGNED_INT, Pointer(0));
}
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glDisable(GL_TEXTURE_2D);

Code: Select all

struct FontGlyph
{
    // This contains the glyph's coordinates within the face's texture
};

class FontFace
{
public:
    uint GlyphIndex(uint characterCode);
    FontGlyph& Glyph(uint glyphIndex);

protected:
    std::map<uint, uint> mGlyphIndices; // This maps character codes to glyph indices
    std::map<uint, FontGlyph> mGlyphs;
    Texture* mTexture;
};

class FontManager
{
public:
    // This method gets a face from mFace, loading it if it doesn't exist
    // id is formatted like this: <name>:<size>
    FontFace& Face(std::string const& id);

protected:
    std::map<std::string, FontFace> mFaces;
};