static void noise_render() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(-1.0, 1.0, -1.0, 1.0, -1, 1);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
material* noise_mat = asset_get(P("./noise.mat"));
GLuint handle = shader_program_handle(material_get_entry(noise_mat, 0)->program);
GLuint random_tex = texture_handle(asset_get(P("$CORANGE/textures/random.dds")));
glUseProgram(handle);
glActiveTexture(GL_TEXTURE0 + 0 );
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, random_tex);
glUniform1i(glGetUniformLocation(handle, "noise_texture"), 0);
glUniform1f(glGetUniformLocation(handle, "time"), shader_time);
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(-1.0, -1.0, 0.0f);
glTexCoord2f(1.0f, 0.0f);
glVertex3f(1.0, -1.0, 0.0f);
glTexCoord2f(1.0f, 1.0f);
glVertex3f(1.0, 1.0, 0.0f);
glTexCoord2f(0.0f, 1.0f);
glVertex3f(-1.0, 1.0, 0.0f);
glEnd();
glActiveTexture(GL_TEXTURE0 + 0 );
glDisable(GL_TEXTURE_2D);
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glUseProgram(0);
}
void marching_cubes_render_shadows(light* l) {
mat4 viewm = light_view_matrix(l);
mat4 projm = light_proj_matrix(l);
mat4_to_array(viewm, view_matrix);
mat4_to_array(projm, proj_matrix);
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf(view_matrix);
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(proj_matrix);
mat4_to_array(mat4_id(), world_matrix);
material* depth_mat = asset_get_load(P("$CORANGE/shaders/depth.mat"));
shader_program* depth_shader = material_get_entry(depth_mat, 0)->program;
glUseProgram(*depth_shader);
GLint world_matrix_u = glGetUniformLocation(*depth_shader, "world_matrix");
glUniformMatrix4fv(world_matrix_u, 1, 0, world_matrix);
GLint proj_matrix_u = glGetUniformLocation(*depth_shader, "proj_matrix");
glUniformMatrix4fv(proj_matrix_u, 1, 0, proj_matrix);
GLint view_matrix_u = glGetUniformLocation(*depth_shader, "view_matrix");
glUniformMatrix4fv(view_matrix_u, 1, 0, view_matrix);
glBindBuffer(GL_ARRAY_BUFFER, vertex_positions);
glVertexPointer(4, GL_FLOAT, 0, (void*)0);
glEnableClientState(GL_VERTEX_ARRAY);
glDrawArrays(GL_TRIANGLES, 0, num_verts);
glDisableClientState(GL_VERTEX_ARRAY);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glUseProgram(0);
}
void marching_cubes_render(bool wireframe, camera* c, light* l) {
const int full_size = width * height * depth;
kernel_memory_gl_aquire(point_color_buffer);
kernel_run(write_point_color_back, full_size);
kernel_memory_gl_release(point_color_buffer);
/* Before we do the metaballs lets just do a rendering based upon volume data */
/*
glPointSize(1.0f);
glBindBuffer(GL_ARRAY_BUFFER, point_positions);
glVertexPointer(4, GL_FLOAT, 0, (void*)0);
glEnableClientState(GL_VERTEX_ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, point_colors);
glColorPointer(4, GL_FLOAT, 0, (void*)0);
glEnableClientState(GL_COLOR_ARRAY);
glDrawArrays(GL_POINTS, 0, full_size);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glPointSize(1.0f);
*/
/* Then Draw Triangles */
if (wireframe) {
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
}
material* metaballs_mat = asset_get_load(P("./shaders/metaballs.mat"));
shader_program* metaballs = material_get_entry(metaballs_mat, 0)->program;
GLuint NORMALS = glGetAttribLocation(*metaballs, "normals");
glUseProgram(*metaballs);
GLint light_position_u = glGetUniformLocation(*metaballs, "light_position");
glUniform3f(light_position_u, l->position.x, l->position.y, l->position.z);
GLint camera_position_u = glGetUniformLocation(*metaballs, "camera_position");
glUniform3f(camera_position_u, c->position.x, c->position.y, c->position.z);
mat4 lviewm = light_view_matrix(l);
mat4 lprojm = light_proj_matrix(l);
mat4_to_array(lviewm, lview_matrix);
mat4_to_array(lprojm, lproj_matrix);
GLint lproj_matrix_u = glGetUniformLocation(*metaballs, "light_proj");
glUniformMatrix4fv(lproj_matrix_u, 1, 0, lproj_matrix);
GLint lview_matrix_u = glGetUniformLocation(*metaballs, "light_view");
glUniformMatrix4fv(lview_matrix_u, 1, 0, lview_matrix);
texture* env_map = asset_get_load(P("./resources/metaballs_env.dds"));
glActiveTexture(GL_TEXTURE0 + 0 );
glBindTexture(GL_TEXTURE_2D, *env_map);
glEnable(GL_TEXTURE_2D);
glUniform1i(glGetUniformLocation(*metaballs, "env_map"), 0);
texture* shadow_map = shadow_mapper_depth_texture();
glActiveTexture(GL_TEXTURE0 + 1);
glBindTexture(GL_TEXTURE_2D, *shadow_map);
glEnable(GL_TEXTURE_2D);
glUniform1i(glGetUniformLocation(*metaballs, "shadow_map"), 1);
glBindBuffer(GL_ARRAY_BUFFER, vertex_positions);
glVertexPointer(4, GL_FLOAT, 0, (void*)0);
glEnableClientState(GL_VERTEX_ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, vertex_normals);
glVertexAttribPointer(NORMALS, 4, GL_FLOAT, GL_FALSE, 0, (void*)0);
glEnableVertexAttribArray(NORMALS);
glDrawArrays(GL_TRIANGLES, 0, num_verts);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableVertexAttribArray(NORMALS);
glActiveTexture(GL_TEXTURE0 + 1 );
glDisable(GL_TEXTURE_2D);
glActiveTexture(GL_TEXTURE0 + 0 );
glDisable(GL_TEXTURE_2D);
glUseProgram(0);
if (wireframe) {
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
}
}
int main(int argc, char **argv) {
#ifdef _WIN32
FILE* ctt = fopen("CON", "w" );
FILE* fout = freopen( "CON", "w", stdout );
FILE* ferr = freopen( "CON", "w", stderr );
#endif
corange_init("../../assets_core");
graphics_viewport_set_title("Teapot");
graphics_viewport_set_size(1280, 720);
camera* cam = entity_new("camera", camera);
cam->position = vec3_new(5, 5, 5);
cam->target = vec3_new(0, 0, 0);
teapot_shader = asset_hndl_new_load(P("./assets/teapot.mat"));
teapot_object = asset_hndl_new_load(P("./assets/teapot.obj"));
int running = 1;
SDL_Event e = {0};
while(running) {
frame_begin();
camera* cam = entity_get("camera");
while(SDL_PollEvent(&e)) {
switch(e.type){
case SDL_KEYDOWN:
case SDL_KEYUP:
if (e.key.keysym.sym == SDLK_ESCAPE) { running = 0; }
if (e.key.keysym.sym == SDLK_PRINTSCREEN) { graphics_viewport_screenshot(); }
if (e.key.keysym.sym == SDLK_r &&
e.key.keysym.mod == KMOD_LCTRL) {
asset_reload_all();
}
break;
case SDL_QUIT:
running = 0;
break;
}
camera_control_orbit(cam, e);
ui_event(e);
}
ui_update();
glClearColor(0.25, 0.25, 0.25, 1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
shader_program* shader = material_first_program(asset_hndl_ptr(&teapot_shader));
shader_program_enable(shader);
shader_program_set_mat4(shader, "world", mat4_id());
shader_program_set_mat4(shader, "view", camera_view_matrix(cam));
shader_program_set_mat4(shader, "proj", camera_proj_matrix(cam));
shader_program_set_texture(shader, "cube_beach", 0, asset_hndl_new_load(P("$CORANGE/water/cube_sea.dds")));
shader_program_set_vec3(shader, "camera_direction", camera_direction(cam));
renderable* r = asset_hndl_ptr(&teapot_object);
for(int i=0; i < r->num_surfaces; i++) {
renderable_surface* s = r->surfaces[i];
int mentry_id = min(i, ((material*)asset_hndl_ptr(&r->material))->num_entries-1);
material_entry* me = material_get_entry(asset_hndl_ptr(&r->material), mentry_id);
glBindBuffer(GL_ARRAY_BUFFER, s->vertex_vbo);
shader_program_enable_attribute(shader, "vPosition", 3, 18, (void*)0);
shader_program_enable_attribute(shader, "vNormal", 3, 18, (void*)(sizeof(float) * 3));
//shader_program_enable_attribute(shader, "vTangent", 3, 18, (void*)(sizeof(float) * 6));
//shader_program_enable_attribute(shader, "vBinormal", 3, 18, (void*)(sizeof(float) * 9));
//shader_program_enable_attribute(shader, "vTexcoord", 2, 18, (void*)(sizeof(float) * 12));
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, s->triangle_vbo);
glDrawElements(GL_TRIANGLES, s->num_triangles * 3, GL_UNSIGNED_INT, (void*)0);
shader_program_disable_attribute(shader, "vPosition");
shader_program_disable_attribute(shader, "vNormal");
//shader_program_disable_attribute(shader, "vTangent");
//shader_program_disable_attribute(shader, "vBinormal");
//shader_program_disable_attribute(shader, "vTexcoord");
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
shader_program_disable(shader);
glDisable(GL_DEPTH_TEST);
ui_render();
graphics_swap();
frame_end();
}
corange_finish();
return 0;
}
void ui_rectangle_render(ui_rectangle* r) {
if(!r->active) {
return;
}
int width = graphics_viewport_width();
int height = graphics_viewport_height();
asset_hndl mat = asset_hndl_new_load(P("$CORANGE/shaders/ui.mat"));
shader_program* program_ui = material_get_entry(asset_hndl_ptr(&mat), 0)->program;
shader_program_enable(program_ui);
shader_program_set_mat4(program_ui, "world", mat4_id());
shader_program_set_mat4(program_ui, "view", mat4_id());
shader_program_set_mat4(program_ui, "proj", mat4_orthographic(0, width, height, 0, -1, 1));
glEnable(GL_BLEND);
glBlendFunc(r->blend_src, r->blend_dst);
if (asset_hndl_isnull(&r->texture)) {
shader_program_set_texture(program_ui, "diffuse", 0, asset_hndl_new_load(P("$CORANGE/textures/white.dds")));
} else {
shader_program_set_texture(program_ui, "diffuse", 0, r->texture);
}
shader_program_set_texture(program_ui, "random", 1, asset_hndl_new_load(P("$CORANGE/textures/random.dds")));
shader_program_set_float(program_ui, "time", r->time);
shader_program_set_float(program_ui, "glitch", r->glitch);
float rect_colors[] = {
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w
};
float rect_positions[] = {
r->top_left.x, r->top_left.y,
r->top_left.x, r->bottom_right.y,
r->bottom_right.x, r->bottom_right.y,
r->top_left.x, r->top_left.y,
r->bottom_right.x, r->top_left.y,
r->bottom_right.x, r->bottom_right.y,
};
float rect_texcoords[12];
if (r->texture_tile) {
float width = r->bottom_right.x - r->top_left.x;
float height = r->bottom_right.y - r->top_left.y;
rect_texcoords[0] = 0;
rect_texcoords[1] = height / r->texture_height;
rect_texcoords[2] = width / r->texture_width;
rect_texcoords[3] = height / r->texture_height;
rect_texcoords[4] = width / r->texture_width;
rect_texcoords[5] = 0;
rect_texcoords[6] = 0;
rect_texcoords[7] = height / r->texture_height;
rect_texcoords[8] = 0;
rect_texcoords[9] = 0;
rect_texcoords[10] = width / r->texture_width;
rect_texcoords[11] = 0;
} else {
rect_texcoords[0] = 0;
rect_texcoords[1] = 0;
rect_texcoords[2] = 1;
rect_texcoords[3] = 0;
rect_texcoords[4] = 1;
rect_texcoords[5] = 1;
rect_texcoords[6] = 0;
rect_texcoords[7] = 0;
rect_texcoords[8] = 0;
rect_texcoords[9] = 1;
rect_texcoords[10] = 1;
rect_texcoords[11] = 1;
}
shader_program_enable_attribute(program_ui, "vPosition", 2, 2, rect_positions);
shader_program_enable_attribute(program_ui, "vTexcoord", 2, 2, rect_texcoords);
shader_program_enable_attribute(program_ui, "vColor", 4, 4, rect_colors);
glDrawArrays(GL_TRIANGLES, 0, 6);
shader_program_disable_attribute(program_ui, "vPosition");
shader_program_disable_attribute(program_ui, "vTexcoord");
shader_program_disable_attribute(program_ui, "vColor");
if (r->border_size > 0) {
glLineWidth(r->border_size);
float border_colors[] = {
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w,
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w,
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w,
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w,
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w
};
float border_positions[] = {
r->top_left.x, r->top_left.y,
r->bottom_right.x, r->top_left.y,
r->bottom_right.x, r->bottom_right.y,
r->top_left.x, r->bottom_right.y,
r->top_left.x, r->top_left.y
};
float border_texcoord[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
shader_program_enable_attribute(program_ui, "vPosition", 2, 2, border_positions);
shader_program_enable_attribute(program_ui, "vTexcoord", 2, 2, border_texcoord);
shader_program_enable_attribute(program_ui, "vColor", 4, 4, border_colors);
glDrawArrays(GL_LINE_STRIP, 0, 5);
shader_program_disable_attribute(program_ui, "vPosition");
shader_program_disable_attribute(program_ui, "vTexcoord");
shader_program_disable_attribute(program_ui, "vColor");
glLineWidth(1);
}
glDisable(GL_BLEND);
shader_program_disable(program_ui);
}