Merge pull request #6 from Pebaz/master

Add Fog Shader Example

examples/shaders/fog.py

@@ -0,0 +1,94 @@
+"""
+Example converted to Python from:
+http://bedroomcoders.co.uk/raylib-fog/
+"""
+
+from raylib.dynamic import raylib as rl, ffi
+from raylib.colors import *
+
+rl.SetConfigFlags(rl.FLAG_MSAA_4X_HINT | rl.FLAG_WINDOW_RESIZABLE)
+rl.InitWindow(1280, 768, b'Fog Test')
+
+camera = ffi.new('struct Camera3D *', [
+	[2, 2, 6],
+	[0, 5, 0],
+	[0, 1, 0],
+	45,
+	rl.CAMERA_PERSPECTIVE
+])
+
+model = rl.LoadModelFromMesh(rl.GenMeshTorus(0.4, 1, 16, 32))
+model2 = rl.LoadModelFromMesh(rl.GenMeshCube(1, 1, 1))
+model3 = rl.LoadModelFromMesh(rl.GenMeshSphere(0.5, 32, 32))
+
+texture = rl.LoadTexture(b'resources/test.png')
+
+model.materials[0].maps[rl.MAP_DIFFUSE].texture = texture
+model2.materials[0].maps[rl.MAP_DIFFUSE].texture = texture
+model3.materials[0].maps[rl.MAP_DIFFUSE].texture = texture
+
+shader = rl.LoadShader(b'resources/shaders/fogLight.vs', b'resources/shaders/fogLight.fs')
+shader.locs[rl.LOC_MATRIX_MODEL] = rl.GetShaderLocation(shader, b'matModel')
+shader.locs[rl.LOC_VECTOR_VIEW] = rl.GetShaderLocation(shader, b'viewPos')
+
+amb = rl.GetShaderLocation(shader, b'ambient')
+rl.SetShaderValue(shader, amb, ffi.new('float[]', [0.2, 0.2, 0.2, 1.0]), rl.UNIFORM_VEC4)
+
+fog_color = [0.2, 0.2, 1.0, 1.0]
+fogC = rl.GetShaderLocation(shader, b'fogColor')
+rl.SetShaderValue(shader, fogC, ffi.new('float[]', fog_color), rl.UNIFORM_VEC4)
+
+fogD = rl.GetShaderLocation(shader, b'FogDensity')
+fogDensity = 0.12
+rl.SetShaderValue(shader, fogD, ffi.new('float[]', [fogDensity]), rl.UNIFORM_FLOAT)
+
+
+model.materials[0].shader = shader
+model2.materials[0].shader = shader
+model3.materials[0].shader = shader
+
+rl.SetCameraMode(camera[0], rl.CAMERA_ORBITAL)
+rl.SetTargetFPS(60)
+
+while not rl.WindowShouldClose():
+	rl.UpdateCamera(camera)
+
+	if rl.IsKeyDown(rl.KEY_UP):
+		fogDensity = min(fogDensity + 0.001, 1)
+
+	if rl.IsKeyDown(rl.KEY_DOWN):
+		fogDensity = max(fogDensity - 0.001, 0)
+
+	rl.SetShaderValue(shader, fogD, ffi.new('float[]', [fogDensity]), rl.UNIFORM_FLOAT)
+
+	rl.SetShaderValue(shader, shader.locs[rl.LOC_VECTOR_VIEW], ffi.new('float[]', [camera.position.x]), rl.UNIFORM_VEC3)
+
+	rl.BeginDrawing()
+
+	rl.ClearBackground([int(255 * i) for i in fog_color])
+
+	rl.BeginMode3D(camera[0])
+	rl.DrawModel(model, [0] * 3, 1, WHITE)
+	rl.DrawModel(model2, [-2.6, 0, 0], 1, WHITE)
+	rl.DrawModel(model3, [ 2.6, 0, 0], 1, WHITE)
+
+	for i in range(-20, 20, 2):
+		rl.DrawModel(model, [i, 0, 2], 1, WHITE)
+
+
+	rl.DrawGizmo([1000, 1000, 1000])
+
+	rl.EndMode3D()
+
+	rl.DrawFPS(10, 10)
+	rl.DrawText(f'Up/Down to change fog density: {fogDensity}'.encode('utf-8'), 10, 30, 20, WHITE)
+
+	rl.EndDrawing()
+
+
+rl.CloseWindow()
+rl.UnloadModel(model)
+rl.UnloadModel(model2)
+rl.UnloadModel(model3)
+rl.UnloadTexture(texture)
+rl.UnloadShader(shader)

examples/shaders/resources/shaders/fogLight.fs

@@ -0,0 +1,91 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+in vec3 fragPosition;
+in vec3 fragNormal;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+#define     MAX_LIGHTS              4
+#define     LIGHT_DIRECTIONAL       0
+#define     LIGHT_POINT             1
+
+struct MaterialProperty {
+    vec3 color;
+    int useSampler;
+    sampler2D sampler;
+};
+
+struct Light {
+    int enabled;
+    int type;
+    vec3 position;
+    vec3 target;
+    vec4 color;
+};
+
+// Input lighting values
+uniform Light lights[MAX_LIGHTS];
+uniform vec4 ambient;
+uniform vec3 viewPos;
+uniform float FogDensity;
+uniform vec4 fogColor;
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture(texture0, fragTexCoord);
+    vec3 lightDot = vec3(0.0);
+    vec3 normal = normalize(fragNormal);
+    vec3 viewD = normalize(viewPos - fragPosition);
+    vec3 specular = vec3(0.0);
+
+    // NOTE: Implement here your fragment shader code
+
+    for (int i = 0; i < MAX_LIGHTS; i++)
+    {
+        if (lights[i].enabled == 1)
+        {
+            vec3 light = vec3(0.0);
+            if (lights[i].type == LIGHT_DIRECTIONAL) {
+                light = -normalize(lights[i].target - lights[i].position);
+            }
+            if (lights[i].type == LIGHT_POINT) {
+                light = normalize(lights[i].position - fragPosition);
+            }
+            float NdotL = max(dot(normal, light), 0.0);
+            lightDot += lights[i].color.rgb * NdotL;
+
+            float specCo = 0.0;
+            if(NdotL > 0.0)
+                specCo = pow(max(0.0, dot(viewD, reflect(-(light), normal))), 16);//16 =shine
+            specular += specCo;
+
+        }
+    }
+
+    finalColor =  (texelColor * ((colDiffuse+vec4(specular,1)) * vec4(lightDot, 1.0)));
+    finalColor += texelColor * (ambient/10.0);
+    // gamma
+    finalColor = pow(finalColor, vec4(1.0/2.2));
+
+    float dist = length(viewPos - fragPosition) ;
+    float fogFactor = 1.0 / exp( (dist * FogDensity) * (dist * FogDensity));
+
+    // linear less nice
+    //const float fogStart = 2.0;
+    //const float fogEnd = 10.0;
+    //float fogFactor = (fogEnd - dist)/(fogEnd - fogStart);
+
+    fogFactor = clamp( fogFactor, 0.0, 1.0 );
+    finalColor = mix(fogColor, finalColor, fogFactor);
+}

examples/shaders/resources/shaders/fogLight.vs

@@ -0,0 +1,32 @@
+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+in vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 matModel;
+
+// Output vertex attributes (to fragment shader)
+out vec2 fragTexCoord;
+out vec4 fragColor;
+out vec3 fragPosition;
+out vec3 fragNormal;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    // Send vertex attributes to fragment shader
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0f));
+    mat3 normalMatrix = transpose(inverse(mat3(matModel)));
+    fragNormal = normalize(normalMatrix*vertexNormal);
+
+    // Calculate final vertex position
+    gl_Position = mvp*vec4(vertexPosition, 1.0);
+}

examples/transparent_undecorated_window.py

@@ -0,0 +1,199 @@
+"""
+Requirements:
+- raylib
+- pytweening
+- glm
+
+Windows-Only Requirements:
+- win32gui
+- win32con
+- pywintypes
+"""
+
+import sys, time
+import glm
+import pytweening as tween
+import screeninfo
+from raylib.dynamic import raylib as rl, ffi
+from raylib.colors import *
+
+
+Vec2 = lambda p: glm.vec2(p.x, p.y)
+CTM = lambda: round(time.perf_counter() * 1000)
+
+monitors = screeninfo.get_monitors()
+drag = False
+offset = Vec2(rl.GetMousePosition())
+width = height = 160
+window_vel = glm.vec2()
+window_pos = glm.vec2(monitors[0].width - width, monitors[0].height - height)
+
+rl.SetConfigFlags(
+	rl.FLAG_WINDOW_TRANSPARENT
+	| rl.FLAG_WINDOW_UNDECORATED
+	| rl.FLAG_VSYNC_HINT
+	| rl.FLAG_MSAA_4X_HINT
+)
+rl.InitWindow(width, height, b'')
+rl.SetWindowPosition(int(window_pos.x), int(window_pos.y))
+#rl.SetTargetFPS(500)
+target = rl.LoadRenderTexture(width, height)
+
+# Top-Level Window Support Only On Windows
+if sys.platform == 'win32':
+	import win32gui, win32con, pywintypes
+	
+	# Set window to always top without moving it
+	win32gui.SetWindowPos(
+		pywintypes.HANDLE(ffi.cast('int', rl.GetWindowHandle())),
+		win32con.HWND_TOPMOST,
+		0, 0, 0, 0,
+		win32con.SWP_NOSIZE | win32con.SWP_NOMOVE
+	)
+
+
+#tint = glm.vec4(255, 255, 255, 255) When mouse over, brighten everything fade
+trans = 155
+elapsed = CTM()
+# Generate an 'L' pattern with pixels
+awd = rl.LoadTextureFromImage(rl.LoadImageEx(
+	[
+		WHITE, WHITE,
+		WHITE, [0] * 4
+	],
+	2, 2
+))
+# start1 = [0, 0]    ; end1 = [16, 16]
+# start2 = [0, 160]  ; end2 = [16, 144]
+# start3 = [160, 160]; end3 = [144, 144]
+# start4 = [160, 0]  ; end4 = [144, 16]
+
+start1 = [0, 0]    ; end1 = [8, 8]
+start2 = [0, 160]  ; end2 = [8, 152]
+start3 = [160, 160]; end3 = [152, 152]
+start4 = [160, 0]  ; end4 = [152, 8]
+
+while not rl.WindowShouldClose():
+	frame_start_time = CTM()
+
+	elapsed += 2 * rl.GetFrameTime()
+	if elapsed > 1.0:
+		elapsed = 0
+		start1, end1 = end1, start1
+		start2, end2 = end2, start2
+		start3, end3 = end3, start3
+		start4, end4 = end4, start4
+
+	mouse_pos = Vec2(rl.GetMousePosition())
+
+	if rl.IsKeyReleased(rl.KEY_ENTER):
+		window_pos = glm.vec2()
+		window_vel = glm.vec2()
+	
+	if rl.CheckCollisionPointRec(list(mouse_pos), [0, 0, width, height]):
+		if rl.IsMouseButtonPressed(rl.MOUSE_LEFT_BUTTON):
+			drag = True
+			offset = mouse_pos
+		
+		trans = 255
+	else:
+		trans = 255
+
+	#mouse_pos += window_vel
+	window_vel *= glm.vec2(0.9, 0.9)
+
+	if glm.length(window_vel):
+		window_pos += window_vel
+	 	#rl.SetWindowPosition(int(window_pos.x), int(window_pos.y))
+
+
+	# Find which monitor the square is *currently within*
+	wposx = window_pos.x + width // 2
+	wposy = window_pos.y + height // 2
+	found = False
+	for monitor in reversed(monitors):
+		if wposx > monitor.x and wposx < monitor.x + monitor.width:
+			if wposy > monitor.y and wposy < monitor.y + monitor.height:
+				found = True
+				break
+
+	# If it is out of bounds, find the closest one
+	if not found:
+		sorted_monitors = list(
+			sorted(
+				monitors,
+				key=lambda m: (m.x + m.width // 2) - window_pos.x + (m.y + m.height // 2) - window_pos.y
+			)
+		)
+		monitor = sorted_monitors[0]
+
+	# Constrain window to bounds
+	window_pos.x = max(monitor.x, window_pos.x)
+	window_pos.x = min(monitor.x + monitor.width - width, window_pos.x)
+	window_pos.y = max(monitor.y, window_pos.y)
+	window_pos.y = min(monitor.y + monitor.height - height, window_pos.y)
+	# Set here to "snap" and don't to enable "floating" back into position
+	if not drag:
+		rl.SetWindowPosition(int(window_pos.x), int(window_pos.y))
+
+
+	if drag:
+		window_pos += mouse_pos - offset
+		drag = not rl.IsMouseButtonReleased(rl.MOUSE_LEFT_BUTTON)
+		rl.SetWindowPosition(int(window_pos.x), int(window_pos.y))
+
+		if not drag:
+			window_vel = (mouse_pos - offset) * glm.vec2(1, 0.6) * 0.8
+			if any(glm.isnan(window_vel)):
+				window_vel = glm.vec2()
+
+	rl.BeginDrawing()
+	rl.ClearBackground([0] * 4)
+
+	rl.BeginTextureMode(target)
+	rl.ClearBackground([0] * 4)
+	rl.DrawRectangle(0, 0, width, height, [0] * 4)
+
+	rl.DrawTextureEx(
+		awd, tween.getPointOnLine(*start1, *end1, tween.easeInOutQuad(elapsed)), 0, 32,
+		[255, 200, 0, trans]  # Yellow
+	)
+
+	rl.DrawTextureEx(
+		awd, tween.getPointOnLine(*start2, *end2, tween.easeInOutQuad(elapsed)), -90, 32,
+		[255, 0, 55, trans]  # Red
+	)
+
+	rl.DrawTextureEx(
+		awd, tween.getPointOnLine(*start3, *end3, tween.easeInOutQuad(elapsed)), -180, 32,
+		[100, 200, 55, trans]  # Green
+	)
+
+	rl.DrawTextureEx(
+		awd, tween.getPointOnLine(*start4, *end4, tween.easeInOutQuad(elapsed)), 90, 32,
+		[55, 155, 255, trans]  # Blue
+	)
+
+	rl.EndTextureMode()
+
+	rl.DrawTexturePro(
+		target.texture,
+		[0, 0, width, -height],
+		[0, 0, width, height],
+		[0, 0],
+		0,
+		WHITE
+	)
+
+	for i in range(1000):
+		rl.DrawTextureEx(awd, [-32, -32], 0, 32, WHITE)
+
+	#rl.DrawFPS(0, 0)
+
+	rl.EndDrawing()
+
+	# Sleep any leftover millis
+	time_taken = CTM() - frame_start_time
+	if time_taken < 1000 / 60:
+		time.sleep((1000 / 60 - time_taken) / 1000)
+