A font described as quads from textures

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A font described as quads from textures

int textureLayers

The number of textures to be placed in the texture units

int textureCoords

The number of texture coordinates used

vector<GLenum> textureUnits

The texture unit tokens into which the textures are to be placed

vector<GLenum> coordTextureUnits

The texture unit tokens for which texture coordinates need to be set.

vector<GLenum> textureTargets

The texture targets the textures should be loaded

vector<GLuint> textures

The actual texture ids.

void setNTextureLayers(int n, int npages)

Set the number of texture layers.

void bindTextures(int texIndex)

Bind the textures corresponding to the given index

int nGlyphs

The number of glyphs

vector<int> textureIndex

The texture indices.

vector<float> coordinates

The quad coordinates.

vector<float> advances

The advances.

int textureLayers

The number of textures to be placed in the texture units

int textureCoords

The number of texture coordinates used

vector<GLenum> textureUnits

The texture unit tokens into which the textures are to be placed

vector<GLenum> coordTextureUnits

The texture unit tokens for which texture coordinates need to be set. For vertex and fragment programs, the this may be different from the above.

vector<GLenum> textureTargets

The texture targets the textures should be loaded

vector<GLuint> textures

The actual texture ids. An interleaved vector, with textureLayers textures on the first level.

void setNTextureLayers(int n, int npages)

Set the number of texture layers. Discards all glyphs since changing this is kind of big.

void bindTextures(int texIndex)

Bind the textures corresponding to the given index

int nGlyphs

The number of glyphs

vector<int> textureIndex

The texture indices. Used to index the textures array, with multiplier textureLayers. -1 for "no such glyph".

vector<float> coordinates

The quad coordinates. These are stored in a single array so we can, in the future, bind and download this to the GPU and just index it, along with a vector of offsets (the cumulative sum of the advances). Stored as groups of 8: x0, y0, x1, y1, tx0, ty0, tx1, ty1.

vector<float> advances

The advances. Only horizontal text supported here so far.

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