void Texture::OnDraw(int x, int y) const
{
glColor4f(1, 1, 1, 1); // Should be black?
auto shader = _vid.GetShader(0);
shader->Use();
// Update parameters
glUniform1i(shader->grad_shift_id, 0);
float recols[] = {
0.0, 1.0, 0.0,
1.0, 0.0, 0.0,
};
glUniform3fv(shader->recolour, 2, recols);
int *pos_id = &shader->pos_id;
int *texcoord_id = &shader->tex_coord;
// If there's no mask, maskid is bound to the 0 texture, so ends up being a no-op.
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, this->maskid);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, this->texid);
float left = x;
float right = x + this->width;
float top = y;
float bottom = y + this->height;
float vertices[] = {
left, top, 0, 0, // top-left
right, top, 1, 0, // top-right
left, bottom, 0, 1, // bottom-left
right, top, 1, 0, // top-right
left, bottom, 0, 1, // bottom-left
right, bottom, 1, 1, // bottom-right
};
glBindBuffer(GL_ARRAY_BUFFER, this->vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_DYNAMIC_DRAW);
glEnableVertexAttribArray(*pos_id);
glEnableVertexAttribArray(*texcoord_id);
glVertexAttribPointer(*pos_id, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void *)(0));
glVertexAttribPointer(*texcoord_id, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void *)(2 * sizeof(float)));
glDrawArrays(GL_TRIANGLES, 0, 6); // 2 triangles
/* Clean up */
glDisableVertexAttribArray(*pos_id);
glDisableVertexAttribArray(*texcoord_id);
glBindBuffer(GL_ARRAY_BUFFER, 0);
shader->StopUsing();
}
//------------------------------------------------------------------------
void CVehicleSeatActionAnimation::Reset()
{
if (m_userId)
StopUsing();
}
void RenderRectangle(const GG::Pt& ul, const GG::Pt& lr) {
StartUsing();
GG::FlatRectangle(ul, lr, GG::CLR_WHITE, GG::CLR_WHITE, 0u);
StopUsing();
}
void RenderCircle(const GG::Pt& ul, const GG::Pt& lr) {
StartUsing();
CircleArc(ul, lr, 0.0, TWO_PI, true);
StopUsing();
}
