gather_vertex_shader.h

//import <GLUP/current_profile/vertex_shader_preamble.h>
//import <GLUPGLSL/state.h>
//import <GLUP/stdglup.h>
//import <GLUP/current_profile/toggles.h>
//import <GLUP/current_profile/primitive.h>
 
in vec4 vertex_in[glup_nb_vertices_per_GL_v];
in vec4 color_in[glup_nb_vertices_per_GL_v];
in vec4 tex_coord_in[glup_nb_vertices_per_GL_v];
 
out GVertexData {
    vec4 other_vertex_clip_space[glup_nb_vertices_per_GL_v-1];
    vec4 color[glup_nb_vertices_per_GL_v];
    vec4 tex_coord[glup_nb_vertices_per_GL_v];
} VertexOut;
 
 
void main(void) {
    for(int i=0; i<glup_nb_vertices_per_GL_v; ++i) {
        if(glupIsEnabled(GLUP_VERTEX_COLORS)) {
            VertexOut.color[i] = color_in[i];
        }
        if(glupIsEnabled(GLUP_TEXTURING)) {
            if(glupIsEnabled(GLUP_INDIRECT_TEXTURING)) {
                VertexOut.tex_coord[i] = tex_coord_in[i];
            } else {
                VertexOut.tex_coord[i] = GLUP.texture_matrix * tex_coord_in[i];
            }
        }
    }
 
    for(int i=1; i<glup_nb_vertices_per_GL_v; ++i) {
        VertexOut.other_vertex_clip_space[i-1] =
            GLUP.modelviewprojection_matrix * vertex_in[i];
    }
 
    gl_Position = GLUP.modelviewprojection_matrix * vertex_in[0];
}