phong shader model

6 files changed, 271 insertions, 49 deletions

diff --git a/.gitignore b/.gitignore
index 1fcb152..37b81c5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
+.vs
 out
+src\.vs
diff --git a/build.bat b/build.bat
new file mode 100644
index 0000000..314ee0f
--- /dev/null
+++ b/build.bat
@@ -0,0 +1,37 @@
+@echo off
+setlocal
+
+:: Define the compiler and flags
+set ODIN=odin
+set SRC_DIR=src
+set OUT_DIR_DEBUG=out\debug
+set OUT_DIR_RELEASE=out\release
+set PROGRAM_NAME=funhalla.exe
+
+:: Define the build targets
+call :build_debug
+call :build_release
+goto :eof
+
+:build_debug
+echo Building debug version...
+if not exist "%OUT_DIR_DEBUG%" mkdir "%OUT_DIR_DEBUG%"
+%ODIN% build %SRC_DIR% -out:%OUT_DIR_DEBUG%\%PROGRAM_NAME% --debug -define:GL_DEBUG=true
+goto :eof
+
+:build_release
+echo Building release version...
+if not exist "%OUT_DIR_RELEASE%" mkdir "%OUT_DIR_RELEASE%"
+%ODIN% build %SRC_DIR% -out:%OUT_DIR_RELEASE%\%PROGRAM_NAME%
+goto :eof
+
+:: Clean up build artifacts
+clean:
+echo Cleaning up build artifacts...
+rd /s /q "%OUT_DIR_DEBUG%"
+rd /s /q "%OUT_DIR_RELEASE%"
+
+:: Command to execute clean (optional, uncomment if needed)
+:: call :clean
+
+endlocal
diff --git a/res/shaders/colors.fs b/res/shaders/colors.fs
index d434370..2184d03 100644
--- a/res/shaders/colors.fs
+++ b/res/shaders/colors.fs
@@ -8,17 +8,27 @@ in vec3 FragPos;
 uniform vec3 object_color;
 uniform vec3 light_color;
 uniform vec3 light_position;
+uniform vec3 view_position;
 
 void main() {
+  // ambient
   float ambient_stength = 0.1;
   vec3 ambient = ambient_stength * light_color;
 
+  // diffuse
   vec3 norm = normalize(Normal);
   vec3 light_dir = normalize(light_position - FragPos);
   float diff = max(dot(norm, light_dir), 0.0);
   vec3 diffuse = diff * light_color;
+
+  // specular
+  float specular_strength = 0.5;
+  vec3 view_dir = normalize(view_position - FragPos);
+  vec3 reflect_dir = reflect(-light_dir, norm);
+  float spec = pow(max(dot(view_dir, reflect_dir), 0.0), 32);
+  vec3 specular = specular_strength * spec * light_color;
   
-  vec3 result = (ambient + diffuse) * object_color;
+  vec3 result = (ambient + diffuse + specular) * object_color;
   FragColor = vec4(result, 1.0);
 }
 
diff --git a/res/shaders/colors.vs b/res/shaders/colors.vs
index 323b2ad..15cc265 100644
--- a/res/shaders/colors.vs
+++ b/res/shaders/colors.vs
@@ -12,7 +12,7 @@ out vec3 FragPos;
 
 void main() {
   FragPos = vec3(model * vec4(a_pos, 1.0));
-  Normal = a_normal;  
+  Normal = mat3(transpose(inverse(model))) * a_normal;
 
   gl_Position = projection * view  * vec4(FragPos, 1.0);
 }
diff --git a/src/main.odin b/src/main.odin
index f09ccb4..bb4803e 100644
--- a/src/main.odin
+++ b/src/main.odin
@@ -139,47 +139,222 @@ main :: proc() {
 	}
 
 	vertices: []f32 = {
-   -0.5, -0.5, -0.5,  0.0,  0.0, -1.0,
-     0.5, -0.5, -0.5,  0.0,  0.0, -1.0, 
-     0.5,  0.5, -0.5,  0.0,  0.0, -1.0, 
-     0.5,  0.5, -0.5,  0.0,  0.0, -1.0, 
-    -0.5,  0.5, -0.5,  0.0,  0.0, -1.0, 
-    -0.5, -0.5, -0.5,  0.0,  0.0, -1.0, 
-
-    -0.5, -0.5,  0.5,  0.0,  0.0, 1.0,
-     0.5, -0.5,  0.5,  0.0,  0.0, 1.0,
-     0.5,  0.5,  0.5,  0.0,  0.0, 1.0,
-     0.5,  0.5,  0.5,  0.0,  0.0, 1.0,
-    -0.5,  0.5,  0.5,  0.0,  0.0, 1.0,
-    -0.5, -0.5,  0.5,  0.0,  0.0, 1.0,
-
-    -0.5,  0.5,  0.5, -1.0,  0.0,  0.0,
-    -0.5,  0.5, -0.5, -1.0,  0.0,  0.0,
-    -0.5, -0.5, -0.5, -1.0,  0.0,  0.0,
-    -0.5, -0.5, -0.5, -1.0,  0.0,  0.0,
-    -0.5, -0.5,  0.5, -1.0,  0.0,  0.0,
-    -0.5,  0.5,  0.5, -1.0,  0.0,  0.0,
-
-     0.5,  0.5,  0.5,  1.0,  0.0,  0.0,
-     0.5,  0.5, -0.5,  1.0,  0.0,  0.0,
-     0.5, -0.5, -0.5,  1.0,  0.0,  0.0,
-     0.5, -0.5, -0.5,  1.0,  0.0,  0.0,
-     0.5, -0.5,  0.5,  1.0,  0.0,  0.0,
-     0.5,  0.5,  0.5,  1.0,  0.0,  0.0,
-
-    -0.5, -0.5, -0.5,  0.0, -1.0,  0.0,
-     0.5, -0.5, -0.5,  0.0, -1.0,  0.0,
-     0.5, -0.5,  0.5,  0.0, -1.0,  0.0,
-     0.5, -0.5,  0.5,  0.0, -1.0,  0.0,
-    -0.5, -0.5,  0.5,  0.0, -1.0,  0.0,
-    -0.5, -0.5, -0.5,  0.0, -1.0,  0.0,
-
-    -0.5,  0.5, -0.5,  0.0,  1.0,  0.0,
-     0.5,  0.5, -0.5,  0.0,  1.0,  0.0,
-     0.5,  0.5,  0.5,  0.0,  1.0,  0.0,
-     0.5,  0.5,  0.5,  0.0,  1.0,  0.0,
-    -0.5,  0.5,  0.5,  0.0,  1.0,  0.0,
-    -0.5,  0.5, -0.5,  0.0,  1.0,  0.0
+		-0.5,
+		-0.5,
+		-0.5,
+		0.0,
+		0.0,
+		-1.0,
+		0.5,
+		-0.5,
+		-0.5,
+		0.0,
+		0.0,
+		-1.0,
+		0.5,
+		0.5,
+		-0.5,
+		0.0,
+		0.0,
+		-1.0,
+		0.5,
+		0.5,
+		-0.5,
+		0.0,
+		0.0,
+		-1.0,
+		-0.5,
+		0.5,
+		-0.5,
+		0.0,
+		0.0,
+		-1.0,
+		-0.5,
+		-0.5,
+		-0.5,
+		0.0,
+		0.0,
+		-1.0,
+		-0.5,
+		-0.5,
+		0.5,
+		0.0,
+		0.0,
+		1.0,
+		0.5,
+		-0.5,
+		0.5,
+		0.0,
+		0.0,
+		1.0,
+		0.5,
+		0.5,
+		0.5,
+		0.0,
+		0.0,
+		1.0,
+		0.5,
+		0.5,
+		0.5,
+		0.0,
+		0.0,
+		1.0,
+		-0.5,
+		0.5,
+		0.5,
+		0.0,
+		0.0,
+		1.0,
+		-0.5,
+		-0.5,
+		0.5,
+		0.0,
+		0.0,
+		1.0,
+		-0.5,
+		0.5,
+		0.5,
+		-1.0,
+		0.0,
+		0.0,
+		-0.5,
+		0.5,
+		-0.5,
+		-1.0,
+		0.0,
+		0.0,
+		-0.5,
+		-0.5,
+		-0.5,
+		-1.0,
+		0.0,
+		0.0,
+		-0.5,
+		-0.5,
+		-0.5,
+		-1.0,
+		0.0,
+		0.0,
+		-0.5,
+		-0.5,
+		0.5,
+		-1.0,
+		0.0,
+		0.0,
+		-0.5,
+		0.5,
+		0.5,
+		-1.0,
+		0.0,
+		0.0,
+		0.5,
+		0.5,
+		0.5,
+		1.0,
+		0.0,
+		0.0,
+		0.5,
+		0.5,
+		-0.5,
+		1.0,
+		0.0,
+		0.0,
+		0.5,
+		-0.5,
+		-0.5,
+		1.0,
+		0.0,
+		0.0,
+		0.5,
+		-0.5,
+		-0.5,
+		1.0,
+		0.0,
+		0.0,
+		0.5,
+		-0.5,
+		0.5,
+		1.0,
+		0.0,
+		0.0,
+		0.5,
+		0.5,
+		0.5,
+		1.0,
+		0.0,
+		0.0,
+		-0.5,
+		-0.5,
+		-0.5,
+		0.0,
+		-1.0,
+		0.0,
+		0.5,
+		-0.5,
+		-0.5,
+		0.0,
+		-1.0,
+		0.0,
+		0.5,
+		-0.5,
+		0.5,
+		0.0,
+		-1.0,
+		0.0,
+		0.5,
+		-0.5,
+		0.5,
+		0.0,
+		-1.0,
+		0.0,
+		-0.5,
+		-0.5,
+		0.5,
+		0.0,
+		-1.0,
+		0.0,
+		-0.5,
+		-0.5,
+		-0.5,
+		0.0,
+		-1.0,
+		0.0,
+		-0.5,
+		0.5,
+		-0.5,
+		0.0,
+		1.0,
+		0.0,
+		0.5,
+		0.5,
+		-0.5,
+		0.0,
+		1.0,
+		0.0,
+		0.5,
+		0.5,
+		0.5,
+		0.0,
+		1.0,
+		0.0,
+		0.5,
+		0.5,
+		0.5,
+		0.0,
+		1.0,
+		0.0,
+		-0.5,
+		0.5,
+		0.5,
+		0.0,
+		1.0,
+		0.0,
+		-0.5,
+		0.5,
+		-0.5,
+		0.0,
+		1.0,
+		0.0,
 	}
 
 
@@ -194,7 +369,7 @@ main :: proc() {
 		gl.STATIC_DRAW,
 	)
 
-  gl.GenVertexArrays(1, &cube_vao)
+	gl.GenVertexArrays(1, &cube_vao)
 	gl.BindVertexArray(cube_vao)
 	gl.VertexAttribPointer(0, 3, gl.FLOAT, gl.FALSE, 6 * size_of(f32), 0)
 	gl.EnableVertexAttribArray(0)
@@ -227,7 +402,7 @@ main :: proc() {
 		light_color := Vec3{1.0, 1.0, 1.0}
 		shader.set_vec3(lighting_shader, cstring("object_color"), &object_color)
 		shader.set_vec3(lighting_shader, cstring("light_color"), &light_color)
-    shader.set_vec3(lighting_shader, cstring("light_position"), &light_pos)
+		shader.set_vec3(lighting_shader, cstring("light_position"), &light_pos)
 
 		aspect: f32 = 800.0 / 600.0
 		projection := linalg.matrix4_perspective_f32(
diff --git a/src/shader/shader.odin b/src/shader/shader.odin
index cd798ff..720efde 100644
--- a/src/shader/shader.odin
+++ b/src/shader/shader.odin
@@ -1,7 +1,6 @@
 package shader
 
 import "core:math/linalg"
-import "core:os"
 import "core:strings"
 import gl "vendor:OpenGL"
 
@@ -16,9 +15,6 @@ Vec3 :: linalg.Vector3f32
 Mat4 :: linalg.Matrix4x4f32
 
 shader_init :: proc(vsp, fsp: string) -> (^Shader, int) {
-	assert(os.is_file_path(vsp))
-	assert(os.is_file_path(fsp))
-
 	program_id, ok := gl.load_shaders_file(vsp, fsp)
 
 	if !ok {
@@ -58,5 +54,7 @@ set_mat4 :: proc(using shader: ^Shader, name: cstring, value: ^Mat4) {
 set_value :: proc {
 	set_i32,
 	set_f32,
+	set_vec3,
+	set_mat4,
 	set_bool,
 }