Spheres/primitive built-in meshes, cull-modes, vec4 uniforms

color.odin

@@ -1,7 +1,8 @@
 package renderer
 
 import "core:math/rand"
-Color :: union {
+
+Color :: union #no_nil {
     RGB_Color,
     RGBA_Color,
 }

mesh.odin

@@ -1,5 +1,7 @@
 package renderer
 
+import "core:math"
+import "core:log"
 Mesh :: struct {
     amount_of_indices: u32,
     backend: Mesh_Backend,
@@ -14,7 +16,12 @@ Mesh_Layout :: struct {
     type_size: u32,
 }
 
-create_mesh :: proc(renderer: ^Renderer, layout: []Mesh_Layout, vertices: []f32, indices: []u32) -> (Mesh, bool) { // TODO: SS - Should probably return a Mesh_Handle.
+create_mesh :: proc {
+    create_mesh_layout_vertices_indices,
+    create_mesh_from_primitive,
+}
+
+create_mesh_layout_vertices_indices :: proc(renderer: ^Renderer, layout: []Mesh_Layout, vertices: []f32, indices: []u32) -> (Mesh, bool) { // TODO: SS - Should probably return a Mesh_Handle.
     mesh: Mesh
 
     if len(vertices) == 0 {
@@ -39,4 +46,191 @@ create_mesh :: proc(renderer: ^Renderer, layout: []Mesh_Layout, vertices: []f32,
     }
 
     return m, true
+}
+
+Primitive_Mesh_Type :: enum {
+    Cube,
+    Quad,
+    Sphere,
+}
+
+create_mesh_from_primitive :: proc(renderer: ^Renderer, primitive_mesh_type: Primitive_Mesh_Type) -> (Mesh, bool) {
+    switch primitive_mesh_type {
+        case .Cube: {
+            m, ok := create_mesh(
+                renderer = renderer,
+                layout = {
+                    { "position",       3, size_of(f32), },
+                    { "normal",         3, size_of(f32), },
+                    { "texture_coords", 2, size_of(f32), },
+                    { "tangent",        3, size_of(f32), },
+                },
+                vertices = []f32{
+                    // Positions          // Normals       // UV       // Tangent
+                    // Back face
+                    -0.5, -0.5, -0.5,      0.0, 0.0, -1.0,   0.0, 0.0,    1.0, 0.0, 0.0,
+                    0.5, -0.5, -0.5,      0.0, 0.0, -1.0,   1.0, 0.0,    1.0, 0.0, 0.0,
+                    0.5,  0.5, -0.5,      0.0, 0.0, -1.0,   1.0, 1.0,    1.0, 0.0, 0.0,
+                    -0.5,  0.5, -0.5,      0.0, 0.0, -1.0,   0.0, 1.0,    1.0, 0.0, 0.0,
+
+                    // Front face
+                    -0.5, -0.5,  0.5,      0.0, 0.0,  1.0,   0.0, 0.0,    1.0, 0.0, 0.0,
+                    0.5, -0.5,  0.5,      0.0, 0.0,  1.0,   1.0, 0.0,    1.0, 0.0, 0.0,
+                    0.5,  0.5,  0.5,      0.0, 0.0,  1.0,   1.0, 1.0,    1.0, 0.0, 0.0,
+                    -0.5,  0.5,  0.5,      0.0, 0.0,  1.0,   0.0, 1.0,    1.0, 0.0, 0.0,
+
+                    // Left face
+                    -0.5,  0.5,  0.5,     -1.0, 0.0, 0.0,    1.0, 0.0,    0.0, 0.0, 1.0,
+                    -0.5,  0.5, -0.5,     -1.0, 0.0, 0.0,    1.0, 1.0,    0.0, 0.0, 1.0,
+                    -0.5, -0.5, -0.5,     -1.0, 0.0, 0.0,    0.0, 1.0,    0.0, 0.0, 1.0,
+                    -0.5, -0.5,  0.5,     -1.0, 0.0, 0.0,    0.0, 0.0,    0.0, 0.0, 1.0,
+
+                    // Right face
+                    0.5,  0.5,  0.5,      1.0, 0.0, 0.0,    1.0, 0.0,    0.0, 0.0, -1.0,
+                    0.5, -0.5,  0.5,      1.0, 0.0, 0.0,    0.0, 0.0,    0.0, 0.0, -1.0,
+                    0.5, -0.5, -0.5,      1.0, 0.0, 0.0,    0.0, 1.0,    0.0, 0.0, -1.0,
+                    0.5,  0.5, -0.5,      1.0, 0.0, 0.0,    1.0, 1.0,    0.0, 0.0, -1.0,
+
+                    // Bottom face
+                    -0.5, -0.5, -0.5,      0.0,-1.0, 0.0,    0.0, 1.0,    1.0, 0.0, 0.0,
+                    0.5, -0.5, -0.5,      0.0,-1.0, 0.0,    1.0, 1.0,    1.0, 0.0, 0.0,
+                    0.5, -0.5,  0.5,      0.0,-1.0, 0.0,    1.0, 0.0,    1.0, 0.0, 0.0,
+                    -0.5, -0.5,  0.5,      0.0,-1.0, 0.0,    0.0, 0.0,    1.0, 0.0, 0.0,
+
+                    // Top face
+                    -0.5,  0.5, -0.5,      0.0, 1.0, 0.0,    0.0, 1.0,    1.0, 0.0, 0.0,
+                    0.5,  0.5, -0.5,      0.0, 1.0, 0.0,    1.0, 1.0,    1.0, 0.0, 0.0,
+                    0.5,  0.5,  0.5,      0.0, 1.0, 0.0,    1.0, 0.0,    1.0, 0.0, 0.0,
+                    -0.5,  0.5,  0.5,      0.0, 1.0, 0.0,    0.0, 0.0,    1.0, 0.0, 0.0,
+                },
+                indices = []u32 {
+                    // Back face
+                    0, 3, 1,
+                    1, 3, 2,
+
+                    // Front face
+                    4, 5, 7,
+                    5, 6, 7,
+
+                    // Left face
+                    8, 9, 11,
+                    9, 10, 11,
+
+                    // Right face
+                    12, 13, 15,
+                    13, 14, 15,
+
+                    // Bottom face
+                    16, 17, 18,
+                    16, 18, 19,
+
+                    // Top face
+                    20, 22, 21,
+                    20, 23, 22
+                }
+            )
+
+            return m, ok
+        }
+        case .Quad: {
+            m, ok := create_mesh(
+                renderer = renderer,
+                layout = {
+                    { "position",       3, size_of(f32), },
+                    { "normal",         3, size_of(f32), },
+                    { "texture_coords", 2, size_of(f32), },
+                    { "tangent",        3, size_of(f32), },
+                },
+                vertices = []f32 {
+                    // Positions.      // Normals      // Texture Coordinates.     // Tangent.
+                    0.5,  0.5, 0.0,    0, 0, 0,        1.0, 1.0,                   1, 0, 0, // Top right.
+                    0.5, -0.5, 0.0,    0, 0, 0,        1.0, 0.0,                   1, 0, 0, // Bottom right.
+                   -0.5, -0.5, 0.0,    0, 0, 0,        0.0, 0.0,                   1, 0, 0, // Bottom left.
+                   -0.5,  0.5, 0.0,    0, 0, 0,        0.0, 1.0,                   1, 0, 0, // Top left.
+                },
+                indices = []u32 {
+                    0, 1, 3,
+                    1, 2, 3,
+                }
+            )
+            return m, ok
+        }
+        case .Sphere: {
+            X_SEGMENTS :: 64
+            Y_SEGMENTS :: 32
+
+            vertices := make([dynamic]f32, 0)
+            indices  := make([dynamic]u32, 0)
+
+            for y in 0..=Y_SEGMENTS {
+                y_segment := f32(y) / f32(Y_SEGMENTS)
+                phi := y_segment * math.PI
+
+                for x in 0..=X_SEGMENTS {
+                    x_segment := f32(x) / f32(X_SEGMENTS)
+                    theta := x_segment * math.TAU
+
+                    px := math.cos(theta) * math.sin(phi)
+                    py := math.cos(phi)
+                    pz := math.sin(theta) * math.sin(phi)
+
+                    // Position.
+                    append(&vertices, px * 0.5)
+                    append(&vertices, py * 0.5)
+                    append(&vertices, pz * 0.5)
+
+                    // Normal.
+                    append(&vertices, px)
+                    append(&vertices, py)
+                    append(&vertices, pz)
+
+                    // UV.
+                    append(&vertices, x_segment)
+                    append(&vertices, 1.0 - y_segment)
+
+                    // Tangent.
+                    tx := -math.sin(theta)
+                    ty := f32(0.0)
+                    tz :=  math.cos(theta)
+
+                    append(&vertices, tx)
+                    append(&vertices, ty)
+                    append(&vertices, tz)
+                }
+            }
+
+            for y in 0..<Y_SEGMENTS {
+                for x in 0..<X_SEGMENTS {
+                    i0 := u32(y       * (X_SEGMENTS + 1) + x)
+                    i1 := u32((y + 1) * (X_SEGMENTS + 1) + x)
+                    i2 := u32((y + 1) * (X_SEGMENTS + 1) + x + 1)
+                    i3 := u32(y       * (X_SEGMENTS + 1) + x + 1)
+
+                    append(&indices, i0)
+                    append(&indices, i3)
+                    append(&indices, i1)
+
+                    append(&indices, i1)
+                    append(&indices, i3)
+                    append(&indices, i2)
+                }
+            }
+
+            m, ok := create_mesh(
+                renderer = renderer,
+                layout = {
+                    { "position",       3, size_of(f32), },
+                    { "normal",         3, size_of(f32), },
+                    { "texture_coords", 2, size_of(f32), },
+                    { "tangent",        3, size_of(f32), },
+                },
+                vertices = vertices[:],
+                indices  = indices[:],
+            )
+
+            return m, ok
+        }
+    }
+
+    return {}, false
 }

pass.odin

@@ -2,6 +2,7 @@ package renderer
 
 import "core:math/linalg"
 import "core:fmt"
+import "core:log"
 
 MAX_DRAW_COMMANDS_CAPACITY :: 4096
 MAX_POST_PROCESS_NODES_PER_PASS :: 8
@@ -19,6 +20,7 @@ Pass_Type :: union {
 Scene_Pass :: struct {
     blend_mode: Blend_Mode,
     sort_mode: Sort_Mode,
+    cull_mode: Cull_Mode,
     
     draw_commands: [dynamic]Draw_Command, // Capacity is 'MAX_DRAW_COMMANDS_CAPACITY'.
 
@@ -31,10 +33,21 @@ Post_Processing_Pass :: struct {
 
 Uniform :: union {
     Uniform_Texture,
+
     Uniform_Float,
+    Uniform_Float_Pointer,
+    
     Uniform_Matrix4f32,
+    Uniform_Matrix4f32_Pointer,
+
     Uniform_Vector3,
+    Uniform_Vector3_Pointer,
+
+    Uniform_Vector4,
+    Uniform_Vector4_Pointer,
+
     Uniform_Color,
+    Uniform_Color_Pointer,
 }
 
 Uniform_Texture :: struct {
@@ -43,21 +56,46 @@ Uniform_Texture :: struct {
 }
 
 Uniform_Float :: struct {
+    name: string,
+    value: f32,
+}
+Uniform_Float_Pointer :: struct {
     name: string,
     value: ^f32,
 }
 
 Uniform_Matrix4f32 :: struct {
+    name: string,
+    value: linalg.Matrix4f32,
+}
+Uniform_Matrix4f32_Pointer :: struct {
     name: string,
     value: ^linalg.Matrix4f32,
 }
 
 Uniform_Vector3 :: struct {
+    name: string,
+    value: [3]f32,
+}
+Uniform_Vector3_Pointer :: struct {
     name: string,
     value: ^[3]f32,
 }
 
+Uniform_Vector4 :: struct {
+    name: string,
+    value: [4]f32,
+}
+Uniform_Vector4_Pointer :: struct {
+    name: string,
+    value: ^[4]f32,
+}
+
 Uniform_Color :: struct {
+    name: string,
+    value: Color,
+}
+Uniform_Color_Pointer :: struct {
     name: string,
     value: ^Color,
 }
@@ -69,16 +107,46 @@ Post_Processing_Node :: struct {
     program: ^Shader_Program,
 }
 
+// TODO: SS - Create a pool of 'Draw_Command's and reuse them.
+
+MAX_UNIFORMS_PER_DRAW_COMMAND :: 8
+
 Draw_Command :: struct {
     renderer: ^Renderer, // Needed for sorting.
 
     mesh: Mesh,
     material: Material,
+    uniforms: [MAX_UNIFORMS_PER_DRAW_COMMAND]Uniform,
+    uniform_count: u8,
+    
     position: [3]f32,
     rotation: [3]f32,
     scale: [3]f32,
 }
 
+create_draw_command :: proc(renderer: ^Renderer, mesh: Mesh, material: Material, uniforms: []Uniform, position, rotation, scale: [3]f32, loc := #caller_location) -> Draw_Command {
+    dc: Draw_Command
+
+    dc.renderer = renderer
+    dc.mesh = mesh
+    dc.material = material
+    dc.position = position
+    dc.rotation = rotation
+    dc.scale = scale
+
+    for u in uniforms {
+        if dc.uniform_count >= MAX_UNIFORMS_PER_DRAW_COMMAND {
+            log.warnf("Hit max capacity (%v) of uniforms per draw command! %v", MAX_UNIFORMS_PER_DRAW_COMMAND, loc)
+            break
+        }
+        
+        dc.uniforms[dc.uniform_count] = u
+        dc.uniform_count += 1
+    }
+    
+    return dc
+}
+
 Blend_Mode :: enum {
     None,
     Alpha,
@@ -117,10 +185,18 @@ Sort_Mode :: enum {
     Front_To_Back, // Sorts the commands in the 'draw_commmands' array (from front to back) before drawing them.
 }
 
+Cull_Mode :: enum {
+    None,
+    Back,
+    Front,
+    Front_Back,
+}
+
 create_scene_pass :: proc(
     name: string,
     blend_mode: Blend_Mode,
     sort_mode: Sort_Mode,
+    cull_mode: Cull_Mode,
     output_rt: ^Render_Target,
 ) -> Pass
 {
@@ -131,6 +207,7 @@ create_scene_pass :: proc(
     p.type = Scene_Pass {
         blend_mode = blend_mode,
         sort_mode = sort_mode,
+        cull_mode = cull_mode,
 
         draw_commands = make([dynamic]Draw_Command, 0, MAX_DRAW_COMMANDS_CAPACITY),
 
@@ -194,7 +271,83 @@ add_command_to_pass :: proc(renderer: ^Renderer, pass: ^Pass, command: Draw_Comm
             assert(err == .None)
         }
     }
-    
 
     return true
+}
+
+execute_pass :: proc(renderer: ^Renderer, pass: ^Pass, view_matrix, projection_matrix: linalg.Matrix4x4f32) { // TODO: SS - Move to 'pass.odin'.
+    // fmt.printfln("Executing pass '%v'.", pass.name)
+    
+    assert(renderer != nil)
+    assert(pass != nil)
+    
+    switch &t in &pass.type {
+        case Scene_Pass: {
+            apply_polygon_mode(renderer, renderer.polygon_mode)
+            
+            assert(t.output_rt != nil)
+            bind_render_target(renderer, t.output_rt)
+            defer bind_render_target(renderer, nil)
+
+            should_write_depth := t.output_rt.depth_texture != nil
+            should_test_depth  := should_write_depth
+            should_clear_depth := should_write_depth
+
+            should_clear_color := true
+            set_clear_color(renderer, RGBA_Color { 0, 0, 0, 0 })
+
+            clear_screen(renderer, should_clear_color, should_clear_depth)
+            apply_depth(renderer, should_test_depth, should_write_depth)
+        
+            apply_blend_mode(renderer, t.blend_mode)
+            defer apply_blend_mode(renderer, .None)
+
+            apply_cull_mode(renderer, t.cull_mode)
+            defer apply_cull_mode(renderer, .None)
+        
+            sort_draw_commands(renderer, &t)
+        
+            for &dc in &t.draw_commands { // TODO: SS - Don't think we need the address of the draw-commands.
+                model_matrix := linalg.identity(linalg.Matrix4x4f32)
+        
+                // Translate.
+                translation := linalg.matrix4_translate(dc.position)
+                
+                // Rotate.
+                rot_x := linalg.matrix4_rotate(linalg.to_radians(dc.rotation.x), [3]f32 { 1, 0, 0 })
+                rot_y := linalg.matrix4_rotate(linalg.to_radians(dc.rotation.y), [3]f32 { 0, 1, 0 })
+                rot_z := linalg.matrix4_rotate(linalg.to_radians(dc.rotation.z), [3]f32 { 0, 0, 1 })
+                rotation := rot_z * rot_y * rot_x
+                
+                // Scale.
+                scale := linalg.matrix4_scale(dc.scale)
+        
+                model_matrix *= translation * rotation * scale
+
+                // Apply uniforms.
+                activate_material(&dc.material, model_matrix, view_matrix, projection_matrix)
+                if dc.uniform_count > 0 {
+                    set_shader_uniforms(dc.material.shader_program, dc.uniforms[:dc.uniform_count])
+                }
+        
+                // Draw the mesh.
+                draw_mesh(&dc.mesh)
+            }
+
+            // Clear the pass' draw-commands.
+            clear(&t.draw_commands)
+
+            // TODO: SS - "Deactivate" the pass?
+
+            apply_polygon_mode(renderer, .Fill)
+        }
+        case Post_Processing_Pass: {
+            // Execute the post-processing nodes.
+            for &pp in &t.post_processing_nodes {
+                execute_post_processing_node(renderer, &pp, view_matrix, projection_matrix)
+            }
+
+            // TODO: SS - "Deactivate" the pass?
+        }
+    }
 }

renderer.odin

@@ -23,6 +23,9 @@ Renderer :: struct {
 
     active_camera: ^Camera, // NOTE: SS - Hardcoded to 1 active camera. Split-screen is likely not possible due to this. Fix(?).
 
+    // Primitive meshes.
+    default_cube_mesh, default_quad_mesh, default_sphere_mesh: Mesh,
+    
     fullscreen_vertex_shader, fullscreen_fragment_shader: Shader,
     fullscreen_shader_program: Shader_Program,
     fullscreen_mesh: Mesh,
@@ -65,6 +68,20 @@ create :: proc(surface_ptr: rawptr) -> (^Renderer, bool) {
 
     set_vsync(renderer, true)
 
+    { // Create the default mesh-primitives.
+        // default_cube_mesh, default_quad_mesh, default_sphere_mesh: Mesh,
+
+        if m, ok := create_mesh(renderer, .Cube); ok {
+            renderer.default_cube_mesh = m
+        }
+        if m, ok := create_mesh(renderer, .Quad); ok {
+            renderer.default_quad_mesh = m
+        }
+        if m, ok := create_mesh(renderer, .Sphere); ok {
+            renderer.default_sphere_mesh = m
+        }
+    }
+
     { // Create the fullscreen shaders, material and mesh.
         fs_vertex_shader, fs_vertex_shader_ok := create_shader(renderer, .Vertex, "fs_vertex.glsl")
         assert(fs_vertex_shader_ok)
@@ -135,13 +152,13 @@ set_vsync :: proc(renderer: ^Renderer, on: bool) {
     }
 }
 
-@(private="file") set_clear_color :: proc(renderer: ^Renderer, color: Color) {
+@(private) set_clear_color :: proc(renderer: ^Renderer, color: Color) {
     when RENDER_BACKEND_OPENGL {
         opengl_set_clear_color(renderer, color)
     }
 }
 
-@(private="file") clear_screen :: proc(renderer: ^Renderer, clear_color: bool, clear_depth: bool) {
+@(private) clear_screen :: proc(renderer: ^Renderer, clear_color: bool, clear_depth: bool) {
     when RENDER_BACKEND_OPENGL {
         opengl_clear_screen(renderer, clear_color, clear_depth)
     }
@@ -202,75 +219,6 @@ render_frame :: proc(renderer: ^Renderer, texture_to_present: ^Texture, clear_co
     }
 }
 
-execute_pass :: proc(renderer: ^Renderer, pass: ^Pass, view_matrix, projection_matrix: linalg.Matrix4x4f32) { // TODO: SS - Move to 'pass.odin'.
-    // fmt.printfln("Executing pass '%v'.", pass.name)
-    
-    assert(renderer != nil)
-    assert(pass != nil)
-    
-    switch &t in &pass.type {
-        case Scene_Pass: {
-            apply_polygon_mode(renderer, renderer.polygon_mode)
-            
-            assert(t.output_rt != nil)
-            bind_render_target(renderer, t.output_rt)
-            defer bind_render_target(renderer, nil)
-
-            should_write_depth := t.output_rt.depth_texture != nil
-            should_test_depth  := should_write_depth
-            should_clear_depth := should_write_depth
-
-            should_clear_color := true
-            set_clear_color(renderer, RGBA_Color { 0, 0, 0, 0 })
-
-            clear_screen(renderer, should_clear_color, should_clear_depth)
-            apply_depth(renderer, should_test_depth, should_write_depth)
-        
-            apply_blend_mode(renderer, t.blend_mode)
-            defer apply_blend_mode(renderer, .None)
-        
-            sort_draw_commands(renderer, &t)
-        
-            for &dc in &t.draw_commands { // TODO: SS - Don't think we need the address of the draw-commands.
-                model_matrix := linalg.identity(linalg.Matrix4x4f32)
-        
-                // Translate.
-                translation := linalg.matrix4_translate(dc.position)
-                
-                // Rotate.
-                rot_x := linalg.matrix4_rotate(linalg.to_radians(dc.rotation.x), [3]f32 { 1, 0, 0 })
-                rot_y := linalg.matrix4_rotate(linalg.to_radians(dc.rotation.y), [3]f32 { 0, 1, 0 })
-                rot_z := linalg.matrix4_rotate(linalg.to_radians(dc.rotation.z), [3]f32 { 0, 0, 1 })
-                rotation := rot_z * rot_y * rot_x
-                
-                // Scale.
-                scale := linalg.matrix4_scale(dc.scale)
-        
-                model_matrix *= translation * rotation * scale
-
-                activate_material(&dc.material, model_matrix, view_matrix, projection_matrix)
-        
-                draw_mesh(&dc.mesh)
-            }
-
-            // Clear the pass' draw-commands.
-            clear(&t.draw_commands)
-
-            // TODO: SS - "Deactivate" the pass?
-
-            apply_polygon_mode(renderer, .Fill)
-        }
-        case Post_Processing_Pass: {
-            // Execute the post-processing nodes.
-            for &pp in &t.post_processing_nodes {
-                execute_post_processing_node(renderer, &pp, view_matrix, projection_matrix)
-            }
-
-            // TODO: SS - "Deactivate" the pass?
-        }
-    }
-}
-
 execute_post_processing_node :: proc(renderer: ^Renderer, node: ^Post_Processing_Node, view_matrix, projection_matrix: linalg.Matrix4x4f32) {
     assert(renderer != nil)
     assert(node != nil)
@@ -286,46 +234,16 @@ execute_post_processing_node :: proc(renderer: ^Renderer, node: ^Post_Processing
     clear_screen(renderer, true, false)
 
     // fmt.printfln("TODO: SS - Execute post-processing node '%v' (VS: '%v', FS: '%v').", "NAME", node.program.vertex_shader.path, node.program.fragment_shader.path)
+    
+    set_shader_uniforms(node.program, node.uniforms)
 
     mat: Material
     mat.shader_program = node.program
 
-    fs_path := node.program.fragment_shader != nil  ? node.program.fragment_shader.path : "nil"
+    for u in node.uniforms {
-    vs_path := node.program.vertex_shader != nil    ? node.program.vertex_shader.path   : "nil"
+        if t, is_texture := u.(Uniform_Texture); is_texture {
-    
+            mat.textures[mat.texture_count] = t.value
-    for u, i in node.uniforms {
+            mat.texture_count += 1
-        switch &t in u {
-            case Uniform_Texture: {
-                if mat.texture_count > MATERIAL_MAX_TEXTURES {
-                    continue
-                }
-
-                mat.textures[mat.texture_count] = t.value
-                mat.texture_count += 1
-                if !set_shader_uniform(node.program, t) {
-                    fmt.printfln("Failed to set uniform-texture %v in program (vs: '%s', fs: '%s').", t.index, vs_path, fs_path)
-                }
-            }
-            case Uniform_Float: {
-                if !set_shader_uniform(node.program, t) {
-                    fmt.printfln("Failed to set uniform-float '%s' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path)
-                }
-            }
-            case Uniform_Matrix4f32: {
-                if !set_shader_uniform(node.program, t) {
-                    fmt.printfln("Failed to set uniform-matrix4f32 '%s' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path)
-                }
-            }
-            case Uniform_Vector3: {
-                if !set_shader_uniform(node.program, t) {
-                    fmt.printfln("Failed to set uniform-vector3 '%s' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path)
-                }
-            }
-            case Uniform_Color: {
-                if !set_shader_uniform(node.program, t) {
-                    fmt.printfln("Failed to set uniform-color '%s' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path)
-                }
-            }
         }
     }
 
@@ -337,6 +255,10 @@ destroy :: proc(renderer: ^Renderer) {
     when RENDER_BACKEND_OPENGL {
         opengl_destroy(renderer)
     }
+
+    // TODO: SS - Destroy 'default_cube_mesh'
+    // TODO: SS - Destroy 'default_quad_mesh'
+    // TODO: SS - Destroy 'default_sphere_mesh'
     
     assert(renderer != nil)
     free(renderer)
@@ -354,40 +276,8 @@ destroy :: proc(renderer: ^Renderer) {
     p := material.shader_program
 
     activate_shader_program(p)
-
+    set_shader_uniforms(material.shader_program, material.uniforms)
-    fs_path := p.fragment_shader != nil  ? p.fragment_shader.path : "nil"
-    vs_path := p.vertex_shader != nil    ? p.vertex_shader.path   : "nil"
     
-    for u in material.uniforms {
-        switch &t in u {
-            case Uniform_Texture: {
-                if !set_shader_uniform(p, t) {
-                    fmt.printfln("Failed to set uniform-texture %v in program (vs: '%s', fs: '%s').", t.index, vs_path, fs_path)
-                }
-            }
-            case Uniform_Float: {
-                if !set_shader_uniform(p, t) {
-                    fmt.printfln("Failed to set uniform-float '%s' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path)
-                }
-            }
-            case Uniform_Matrix4f32: {
-                if !set_shader_uniform(p, t) {
-                    fmt.printfln("Failed to set uniform-matrix4f32 '%s' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path)
-                }
-            }
-            case Uniform_Vector3: {
-                if !set_shader_uniform(p, t) {
-                    fmt.printfln("Failed to set uniform-vector3 '%s' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path)
-                }
-            }
-            case Uniform_Color: {
-                if !set_shader_uniform(p, t) {
-                    fmt.printfln("Failed to set uniform-color '%s' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path)
-                }
-            }
-        }
-    }
-
     when RENDER_BACKEND_OPENGL {
         opengl_activate_material(material, model_matrix, view_matrix, projection_matrix)
     }
@@ -415,7 +305,14 @@ destroy :: proc(renderer: ^Renderer) {
     }
 }
 
+@(private) apply_cull_mode :: proc(renderer: ^Renderer, cull_mode: Cull_Mode) {
+    when RENDER_BACKEND_OPENGL {
+        opengl_set_cull_mode(renderer, cull_mode)
+    }
+}
+
 @(private) sort_draw_commands :: proc(renderer: ^Renderer, pass: ^Scene_Pass) {
+    // TODO: SS - Set the pass' 'renderer' variable here instead?
     switch pass.sort_mode {
         case .None: {}
         case .Back_To_Front: {

renderer_backend_opengl_windows.odin

@@ -517,6 +517,29 @@ when RENDER_BACKEND_OPENGL {
         )
     }
 
+    opengl_set_cull_mode :: proc(renderer: ^Renderer, cull_mode: Cull_Mode) {
+        switch cull_mode {
+            case .None: {
+                gl.Disable(gl.CULL_FACE)
+            }
+            case .Back: {
+                gl.Enable(gl.CULL_FACE)
+                gl.CullFace(gl.BACK)
+                gl.FrontFace(gl.CCW)
+            }
+            case .Front: {
+                gl.Enable(gl.CULL_FACE)
+                gl.CullFace(gl.FRONT)
+                gl.FrontFace(gl.CCW)
+            }
+            case .Front_Back: {
+                gl.Enable(gl.CULL_FACE)
+                gl.CullFace(gl.FRONT_AND_BACK)
+                gl.FrontFace(gl.CCW)
+            }
+        }
+    }
+
     opengl_bind_render_target :: proc(renderer: ^Renderer, rt: ^Render_Target) {
         if rt == nil {
             gl.BindFramebuffer(gl.FRAMEBUFFER, 0)
@@ -629,7 +652,7 @@ when RENDER_BACKEND_OPENGL {
             return false
         }
 
-        gl.Uniform1f(loc, uniform.value^)
+        gl.Uniform1f(loc, uniform.value)
         
         return true
     }
@@ -644,7 +667,7 @@ when RENDER_BACKEND_OPENGL {
             return false
         }
 
-        data := transmute([16]f32)(uniform.value^)
+        data := transmute([16]f32)(uniform.value)
         gl.UniformMatrix4fv(loc, 1, gl.FALSE, &data[0])
         
         return true
@@ -659,7 +682,23 @@ when RENDER_BACKEND_OPENGL {
             return false
         }
 
-        gl.Uniform3fv(loc, 1, &uniform.value[0])
+        v := transmute([3]f32)uniform.value
+        gl.Uniform3fv(loc, 1, &v[0])
+        
+        return true
+    }
+
+    opengl_set_shader_uniform_vector4 :: proc(program: ^Shader_Program, uniform: Uniform_Vector4) -> bool {
+        opengl_activate_shader_program(program)
+
+        loc := gl.GetUniformLocation(program.backend.handle, fmt.ctprintf("%v", uniform.name))
+        if loc < 0 {
+            fmt.printfln("vector4 Loc: %v", loc)
+            return false
+        }
+
+        v := transmute([4]f32)uniform.value
+        gl.Uniform4fv(loc, 1, &v[0])
         
         return true
     }

shader.odin

@@ -123,12 +123,39 @@ reload_shader_program :: proc(renderer: ^Renderer, p: ^Shader_Program) -> bool {
     return true
 }
 
+set_shader_uniforms :: proc(program: ^Shader_Program, uniforms: []Uniform) {
+    fs_path := program.fragment_shader != nil  ? program.fragment_shader.path : "nil"
+    vs_path := program.vertex_shader != nil    ? program.vertex_shader.path   : "nil"
+    
+    for u in uniforms {
+        switch &t in u {
+            case Uniform_Texture:               { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (texture) %v in program (vs: '%s', fs: '%s').", t.index, vs_path, fs_path) }}
+            case Uniform_Float:                 { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (float) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+            case Uniform_Float_Pointer:         { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (float pointer) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+            case Uniform_Matrix4f32:            { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (matrix4f32) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+            case Uniform_Matrix4f32_Pointer:    { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (matrix4f32 pointer) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+            case Uniform_Vector3:               { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (vector3) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+            case Uniform_Vector3_Pointer:       { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (vector3 pointer) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+            case Uniform_Vector4:               { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (vector4) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+            case Uniform_Vector4_Pointer:       { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (vector4 pointer) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+            case Uniform_Color:                 { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (color) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+            case Uniform_Color_Pointer:         { if !set_shader_uniform(program, t) { fmt.printfln("Failed to set uniform (color pointer) '%v' in program (vs: '%s', fs: '%s').", t.name, vs_path, fs_path) }}
+        }
+    }
+}
+
 set_shader_uniform :: proc { // TODO: SS - Improve setting shader uniforms. A bit bug-prone and annoying to explicitly add code-paths for every 'Uniform' type needed. 
     set_shader_uniform_texture,
     set_shader_uniform_float,
+    set_shader_uniform_float_pointer,
     set_shader_uniform_matrix4f32,
+    set_shader_uniform_matrix4f32_pointer,
     set_shader_uniform_vector3,
+    set_shader_uniform_vector3_pointer,
+    set_shader_uniform_vector4,
+    set_shader_uniform_vector4_pointer,
     set_shader_uniform_color,
+    set_shader_uniform_color_pointer,
 }
 
 set_shader_uniform_texture :: proc(program: ^Shader_Program, uniform: Uniform_Texture) -> bool {
@@ -143,13 +170,15 @@ set_shader_uniform_texture :: proc(program: ^Shader_Program, uniform: Uniform_Te
     return false
 }
 
-set_shader_uniform_float :: proc(program: ^Shader_Program, uniform: Uniform_Float) -> bool {
+set_shader_uniform_float_pointer :: proc(program: ^Shader_Program, uniform: Uniform_Float_Pointer) -> bool {
-    assert(program != nil)
-    assert(len(uniform.name) > 0)
-
     if uniform.value == nil {
         return false
     }
+    return set_shader_uniform(program, Uniform_Float { uniform.name, uniform.value^ })
+}
+set_shader_uniform_float :: proc(program: ^Shader_Program, uniform: Uniform_Float) -> bool {
+    assert(program != nil)
+    assert(len(uniform.name) > 0)
 
     // TODO: SS - Somehow verify that 'uniform.name' exists in the shader(s)?
 
@@ -160,13 +189,15 @@ set_shader_uniform_float :: proc(program: ^Shader_Program, uniform: Uniform_Floa
     return false
 }
 
-set_shader_uniform_matrix4f32 :: proc(program: ^Shader_Program, uniform: Uniform_Matrix4f32) -> bool {
+set_shader_uniform_matrix4f32_pointer :: proc(program: ^Shader_Program, uniform: Uniform_Matrix4f32_Pointer) -> bool {
-    assert(program != nil)
-    assert(len(uniform.name) > 0)
-
     if uniform.value == nil {
         return false
     }
+    return set_shader_uniform(program, Uniform_Matrix4f32 { uniform.name, uniform.value^ })
+}
+set_shader_uniform_matrix4f32 :: proc(program: ^Shader_Program, uniform: Uniform_Matrix4f32) -> bool {
+    assert(program != nil)
+    assert(len(uniform.name) > 0)
 
     // TODO: SS - Somehow verify that 'uniform.name' exists in the shader(s)?
 
@@ -177,13 +208,16 @@ set_shader_uniform_matrix4f32 :: proc(program: ^Shader_Program, uniform: Uniform
     return false
 }
 
-set_shader_uniform_vector3 :: proc(program: ^Shader_Program, uniform: Uniform_Vector3) -> bool {
+set_shader_uniform_vector3_pointer :: proc(program: ^Shader_Program, uniform: Uniform_Vector3_Pointer) -> bool {
-    assert(program != nil)
-    assert(len(uniform.name) > 0)
-
     if uniform.value == nil {
         return false
     }
+    return set_shader_uniform(program, Uniform_Vector3 { uniform.name, uniform.value^ })
+}
+
+set_shader_uniform_vector3 :: proc(program: ^Shader_Program, uniform: Uniform_Vector3) -> bool {
+    assert(program != nil)
+    assert(len(uniform.name) > 0)
 
     // TODO: SS - Somehow verify that 'uniform.name' exists in the shader(s)?
 
@@ -194,13 +228,35 @@ set_shader_uniform_vector3 :: proc(program: ^Shader_Program, uniform: Uniform_Ve
     return false
 }
 
-set_shader_uniform_color :: proc(program: ^Shader_Program, uniform: Uniform_Color) -> bool {
+set_shader_uniform_vector4_pointer :: proc(program: ^Shader_Program, uniform: Uniform_Vector4_Pointer) -> bool {
-    assert(program != nil)
-    assert(len(uniform.name) > 0)
-
     if uniform.value == nil {
         return false
     }
+    return set_shader_uniform(program, Uniform_Vector4 { uniform.name, uniform.value^ })
+}
+
+set_shader_uniform_vector4 :: proc(program: ^Shader_Program, uniform: Uniform_Vector4) -> bool {
+    assert(program != nil)
+    assert(len(uniform.name) > 0)
+
+    // TODO: SS - Somehow verify that 'uniform.name' exists in the shader(s)?
+
+    when RENDER_BACKEND_OPENGL {
+        return opengl_set_shader_uniform_vector4(program, uniform)
+    }
+    
+    return false
+}
+
+set_shader_uniform_color_pointer :: proc(program: ^Shader_Program, uniform: Uniform_Color_Pointer) -> bool {
+    if uniform.value == nil {
+        return false
+    }
+    return set_shader_uniform(program, Uniform_Color { uniform.name, uniform.value^ })
+}
+set_shader_uniform_color :: proc(program: ^Shader_Program, uniform: Uniform_Color) -> bool {
+    assert(program != nil)
+    assert(len(uniform.name) > 0)
 
     // TODO: SS - Somehow verify that 'uniform.name' exists in the shader(s)?
 
@@ -210,7 +266,7 @@ set_shader_uniform_color :: proc(program: ^Shader_Program, uniform: Uniform_Colo
             
             u := Uniform_Vector3 {
                 name = uniform.name,
-                value = &rgb,
+                value = rgb,
             }
             
             when RENDER_BACKEND_OPENGL {
@@ -220,16 +276,14 @@ set_shader_uniform_color :: proc(program: ^Shader_Program, uniform: Uniform_Colo
         case RGBA_Color: {
             rgba := color_to_f32(c)
             
-            // u := Uniform_Vector4 {
+            u := Uniform_Vector4 {
-            //     name = uniform.name,
+                name = uniform.name,
-            //     value = &rgba,
+                value = rgba,
-            // }
+            }
             
-            // TODO: SS - Set vector4.
+            when RENDER_BACKEND_OPENGL {
-            // when RENDER_BACKEND_OPENGL {
+                return opengl_set_shader_uniform_vector4(program, u)
-            //     return opengl_set_shader_uniform_vector4(program, uniform)
+            }
-            // }
-            assert(false, "TODO: SS - Allow setting rgba in uniform.")
         }
     }