ofxAddons/ofxGPUFont
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add color in BufferVertex

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This commit is contained in:
jrkb 2023-04-17 20:13:03 +02:00
parent c94acb14a2
commit 133b74699e
7 changed files with 23 additions and 7 deletions
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12
src/gpufont/font.hpp
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@ -191,6 +191,7 @@ class Font {
struct BufferVertex {
float x, y, u, v;
int32_t bufferIndex;
float r, g, b, a;
};
/// A structure to model a given axis of a variable font.
@ -407,6 +408,8 @@ class Font {
glVertexAttribPointer(1, 2, GL_FLOAT, false, sizeof(BufferVertex), (void *)offsetof(BufferVertex, u));
glEnableVertexAttribArray(2);
glVertexAttribIPointer(2, 1, GL_INT, sizeof(BufferVertex), (void *)offsetof(BufferVertex, bufferIndex));
glEnableVertexAttribArray(3);
glVertexAttribPointer(3, 4, GL_FLOAT, false, sizeof(BufferVertex), (void *)offsetof(BufferVertex, r));
glBindVertexArray(0);
uploadBuffers();
@ -874,6 +877,7 @@ class Font {
const std::vector <GlyphIdentity> & variationText,
std::vector <BufferVertex> & vertices,
std::vector <int32_t> & indices,
const glm::vec4 & color = glm::vec4(1),
const bool vFlip = false,
const float fontSize_px = 42){
float advanceX = 0;
@ -944,10 +948,10 @@ class Font {
glm::vec4 p3 = node.getGlobalTransformMatrix() * glm::vec4(x0, y1 + advanceY, 0, 1);
int32_t base = static_cast <int32_t>(vertices.size());
vertices.push_back(BufferVertex{p0.x, p0.y, u0, v0, glyph.bufferIndex});
vertices.push_back(BufferVertex{p1.x, p1.y, u1, v0, glyph.bufferIndex});
vertices.push_back(BufferVertex{p2.x, p2.y, u1, v1, glyph.bufferIndex});
vertices.push_back(BufferVertex{p3.x, p3.y, u0, v1, glyph.bufferIndex});
vertices.push_back(BufferVertex{p0.x, p0.y, u0, v0, glyph.bufferIndex, color.r, color.g, color.b, color.a});
vertices.push_back(BufferVertex{p1.x, p1.y, u1, v0, glyph.bufferIndex, color.r, color.g, color.b, color.a});
vertices.push_back(BufferVertex{p2.x, p2.y, u1, v1, glyph.bufferIndex, color.r, color.g, color.b, color.a});
vertices.push_back(BufferVertex{p3.x, p3.y, u0, v1, glyph.bufferIndex, color.r, color.g, color.b, color.a});
indices.insert(indices.end(), {base, base + 1, base + 2, base + 2, base + 3, base});
}