Initial commit

examples/shaders/model_shader/glsl330/base.vs

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+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+in vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvpMatrix;
+
+// Output vertex attributes (to fragment shader)
+out vec2 fragTexCoord;
+out vec4 fragColor;
+
+// NOTE: Add here your custom variables 
+
+void main()
+{
+    // Send vertex attributes to fragment shader
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    
+    // Calculate final vertex position
+    gl_Position = mvpMatrix*vec4(vertexPosition, 1.0);
+}

examples/shaders/model_shader/glsl330/grayscale.fs

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+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture(texture0, fragTexCoord)*colDiffuse*fragColor;
+    
+    // Convert texel color to grayscale using NTSC conversion weights
+    float gray = dot(texelColor.rgb, vec3(0.299, 0.587, 0.114));
+    
+    // Calculate final fragment color
+    finalColor = vec4(gray, gray, gray, texelColor.a);
+}

examples/shaders/model_shader/main.go

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+package main
+
+import (
+	"fmt"
+
+	"github.com/gen2brain/raylib-go/raylib"
+)
+
+func main() {
+	screenWidth := int32(800)
+	screenHeight := int32(450)
+
+	raylib.SetConfigFlags(raylib.FlagMsaa4xHint) // Enable Multi Sampling Anti Aliasing 4x (if available)
+
+	raylib.InitWindow(screenWidth, screenHeight, "raylib [shaders] example - model shader")
+
+	camera := raylib.Camera{}
+	camera.Position = raylib.NewVector3(3.0, 3.0, 3.0)
+	camera.Target = raylib.NewVector3(0.0, 1.5, 0.0)
+	camera.Up = raylib.NewVector3(0.0, 1.0, 0.0)
+	camera.Fovy = 45.0
+
+	dwarf := raylib.LoadModel("dwarf.obj")                                 // Load OBJ model
+	texture := raylib.LoadTexture("dwarf_diffuse.png")                     // Load model texture
+	shader := raylib.LoadShader("glsl330/base.vs", "glsl330/grayscale.fs") // Load model shader
+
+	dwarf.Material.Shader = shader      // Set shader effect to 3d model
+	dwarf.Material.TexDiffuse = texture // Bind texture to model
+
+	position := raylib.NewVector3(0.0, 0.0, 0.0) // Set model position
+
+	raylib.SetCameraMode(camera, raylib.CameraFree) // Set free camera mode
+
+	raylib.SetTargetFPS(60)
+
+	for !raylib.WindowShouldClose() {
+		raylib.UpdateCamera(&camera) // Update camera
+
+		raylib.BeginDrawing()
+
+		raylib.ClearBackground(raylib.RayWhite)
+
+		raylib.Begin3dMode(camera)
+
+		raylib.DrawModel(dwarf, position, 2.0, raylib.White) // Draw 3d model with texture
+
+		raylib.DrawGrid(10, 1.0) // Draw a grid
+
+		raylib.End3dMode()
+
+		raylib.DrawText("(c) Dwarf 3D model by David Moreno", screenWidth-200, screenHeight-20, 10, raylib.Gray)
+
+		raylib.DrawText(fmt.Sprintf("Camera position: (%.2f, %.2f, %.2f)", camera.Position.X, camera.Position.Y, camera.Position.Z), 600, 20, 10, raylib.Black)
+		raylib.DrawText(fmt.Sprintf("Camera target: (%.2f, %.2f, %.2f)", camera.Target.X, camera.Target.Y, camera.Target.Z), 600, 40, 10, raylib.Gray)
+
+		raylib.DrawFPS(10, 10)
+
+		raylib.EndDrawing()
+	}
+
+	raylib.UnloadShader(shader)   // Unload shader
+	raylib.UnloadTexture(texture) // Unload texture
+	raylib.UnloadModel(dwarf)     // Unload model
+
+	raylib.CloseWindow()
+}