bool build(ilG_renderman *rm, char **error) {
this->rm = rm;
ilG_material m;
ilG_material_init(&m);
ilG_material_name(&m, "Teapot Material");
ilG_material_arrayAttrib(&m, ILG_MESH_POS, "in_Position");
ilG_material_arrayAttrib(&m, ILG_MESH_TEX, "in_Texcoord");
ilG_material_arrayAttrib(&m, ILG_MESH_NORM, "in_Normal");
ilG_material_arrayAttrib(&m, ILG_MESH_DIFFUSE, "in_Diffuse");
ilG_material_arrayAttrib(&m, ILG_MESH_SPECULAR, "in_Specular");
ilG_material_textureUnit(&m, 0, "tex");
ilG_material_fragData(&m, ILG_GBUFFER_ALBEDO, "out_Albedo");
ilG_material_fragData(&m, ILG_GBUFFER_NORMAL, "out_Normal");
ilG_material_fragData(&m, ILG_GBUFFER_REFRACTION, "out_Refraction");
ilG_material_fragData(&m, ILG_GBUFFER_GLOSS, "out_Gloss");
if (!ilG_renderman_addMaterialFromFile(rm, m, "teapot.vert", "teapot.frag", &mat, error)) {
return false;
}
ilG_material *mat = ilG_renderman_findMaterial(rm, this->mat);
mvp_loc = ilG_material_getLoc(mat, "mvp");
imt_loc = ilG_material_getLoc(mat, "imt");
if (!ilG_mesh_fromfile(&mesh, &demo_fs, "teapot.obj")) {
return false;
}
ilG_tex_loadfile(&tex, &demo_fs, "white-marble-texture.png");
return true;
}
ilG_renderer ilG_heightmap_new(unsigned w, unsigned h, ilG_tex height, ilG_tex normal, ilG_tex color)
{
ilA_mesh *mesh = ilA_mesh_new(ILA_MESH_POSITION|ILA_MESH_TEXCOORD, w * h * 6);
unsigned x, y, i = 0, j;
mesh->mode = ILA_MESH_TRIANGLES;
for (y = 1; y < h; y++) {
for (x = 1; x < w; x++) {
float pos[] = {
x, y, 0, 1,
x, y-1,0, 1,
x-1,y, 0, 1,
x, y-1,0, 1,
x-1,y-1,0, 1,
x-1,y, 0, 1,
};
for (j = 0; j < 24; j += 4) {
pos[j] /= w;
}
for (j = 1; j < 24; j += 4) {
pos[j] /= h;
}
memcpy(mesh->position + i, pos, sizeof(pos));
float tex[] = {
x, y, 0, 0,
x, y, 0, 0,
x, y, 0, 0,
x, y, 0, 0,
x, y, 0, 0,
x, y, 0, 0,
};
memcpy(mesh->texcoord + i, tex, sizeof(tex));
i += 6;
}
}
ilG_heightmap *self = calloc(1, sizeof(ilG_heightmap));
self->w = w;
self->h = h;
height.unit = 0;
normal.unit = 1;
color.unit = 2;
self->height = height;
self->normal = normal;
self->color = color;
self->mesh = mesh;
ilG_material *mat = self->shader = ilG_material_new();
ilG_material_vertex_file(mat, "heightmap.vert");
ilG_material_fragment_file(mat, "heightmap.frag");
ilG_material_name(mat, "Heightmap Shader");
ilG_material_arrayAttrib(mat, ILG_ARRATTR_POSITION, "in_Position");
ilG_material_arrayAttrib(mat, ILG_ARRATTR_TEXCOORD, "in_Texcoord");
ilG_material_textureUnit(mat, 0, "height_tex");
ilG_material_textureUnit(mat, 1, "normal_tex");
ilG_material_textureUnit(mat, 2, "ambient_tex");
ilG_material_fragData(mat, ILG_FRAGDATA_ACCUMULATION, "out_Ambient");
ilG_material_fragData(mat, ILG_FRAGDATA_NORMAL, "out_Normal");
ilG_material_fragData(mat, ILG_FRAGDATA_DIFFUSE, "out_Diffuse");
ilG_material_fragData(mat, ILG_FRAGDATA_SPECULAR, "out_Specular");
ilG_material_matrix(mat, ILG_MVP, "mvp");
ilG_material_matrix(mat, ILG_INVERSE | ILG_MODEL | ILG_TRANSPOSE, "imt");
ilG_material_bindFunc(mat, width_uniform, self, "size");
return ilG_renderer_wrap(self, &ilG_heightmap_renderer);
}
bool ilG_heightmap_build(ilG_heightmap *hm, ilG_renderman *rm, unsigned w, unsigned h,
ilG_tex height, ilG_tex normal, ilG_tex color, char **error)
{
memset(hm, 0, sizeof(*hm));
hm->rm = rm;
ilA_mesh *mesh = ilA_mesh_new(ILA_MESH_POSITION|ILA_MESH_TEXCOORD, w * h * 6);
unsigned x, y, i = 0, j;
mesh->mode = ILA_MESH_TRIANGLES;
for (y = 1; y < h; y++) {
for (x = 1; x < w; x++) {
float pos[] = {
x, y, 0, 1,
x, y-1,0, 1,
x-1,y, 0, 1,
x, y-1,0, 1,
x-1,y-1,0, 1,
x-1,y, 0, 1,
};
for (j = 0; j < 24; j += 4) {
pos[j] /= w;
}
for (j = 1; j < 24; j += 4) {
pos[j] /= h;
}
memcpy(mesh->position + i, pos, sizeof(pos));
float tex[] = {
x, y, 0, 0,
x, y, 0, 0,
x, y, 0, 0,
x, y, 0, 0,
x, y, 0, 0,
x, y, 0, 0,
};
memcpy(mesh->texcoord + i, tex, sizeof(tex));
i += 6;
}
}
hm->w = w;
hm->h = h;
hm->height = height;
hm->normal = normal;
hm->color = color;
ilG_material mat;
ilG_material_init(&mat);
ilG_material_name(&mat, "Heightmap Shader");
ilG_material_arrayAttrib(&mat, ILG_MESH_POS, "in_Position");
ilG_material_arrayAttrib(&mat, ILG_MESH_TEX, "in_Texcoord");
ilG_material_textureUnit(&mat, TEX_HEIGHT, "height_tex");
ilG_material_textureUnit(&mat, TEX_NORMAL, "normal_tex");
ilG_material_textureUnit(&mat, TEX_COLOR, "ambient_tex");
ilG_material_fragData(&mat, ILG_GBUFFER_NORMAL, "out_Normal");
ilG_material_fragData(&mat, ILG_GBUFFER_ALBEDO, "out_Albedo");
if (!ilG_renderman_addMaterialFromFile(hm->rm, mat, "heightmap.vert", "heightmap.frag", &hm->mat, error)) {
return false;
}
ilG_material *mat2 = ilG_renderman_findMaterial(rm, hm->mat);
hm->mvp = ilG_material_getLoc(mat2, "mvp");
hm->imt = ilG_material_getLoc(mat2, "imt");
hm->size = ilG_material_getLoc(mat2, "size");
if (!ilG_mesh_init(&hm->mesh, mesh)) {
ilA_mesh_free(mesh);
return false;
}
ilA_mesh_free(mesh);
return true;
}