125 lines
2.6 KiB
Go
125 lines
2.6 KiB
Go
package main
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import (
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"fmt"
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"path/filepath"
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"unsafe"
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rl "github.com/gen2brain/raylib-go/raylib"
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)
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func main() {
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skyboxFilename := "skybox.png"
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rl.InitWindow(800, 450, "raylib [models] example - skybox loading and drawing")
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camera := rl.NewCamera3D(
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rl.NewVector3(1.0, 1.0, 1.0),
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rl.NewVector3(4.0, 1.0, 4.0),
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rl.NewVector3(0.0, 1.0, 0.0),
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45.0,
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rl.CameraPerspective,
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)
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// load skybox shader and set required locations
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skyboxShader := rl.LoadShader("skybox.vs", "skybox.fs")
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setShaderIntValue(skyboxShader, "environmentMap", rl.MapCubemap)
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// load skybox model
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cube := rl.GenMeshCube(1.0, 1.0, 1.0)
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skybox := rl.LoadModelFromMesh(cube)
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skybox.Materials.Shader = skyboxShader
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// load cubemap texture
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skyboxImg := rl.LoadImage(skyboxFilename)
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skyboxTexture := rl.LoadTextureCubemap(skyboxImg, rl.CubemapLayoutAutoDetect)
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rl.UnloadImage(skyboxImg)
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rl.SetMaterialTexture(skybox.Materials, rl.MapCubemap, skyboxTexture)
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// limit cursor to relative movement inside the window
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rl.DisableCursor()
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// set our game to run at 60 frames-per-second
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rl.SetTargetFPS(60)
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for !rl.WindowShouldClose() {
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rl.UpdateCamera(&camera, rl.CameraFirstPerson)
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// load new cubemap texture on drag&drop
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if rl.IsFileDropped() {
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droppedFiles := rl.LoadDroppedFiles()
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// only support one file dropped
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if len(droppedFiles) == 1 {
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switch filepath.Ext(droppedFiles[0]) {
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case ".png", ".jpg", ".bmp", ".tga":
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skyboxFilename = droppedFiles[0]
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rl.UnloadTexture(skyboxTexture)
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img := rl.LoadImage(skyboxFilename)
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skyboxTexture = rl.LoadTextureCubemap(img, rl.CubemapLayoutAutoDetect)
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rl.UnloadImage(img)
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rl.SetMaterialTexture(skybox.Materials, rl.MapCubemap, skyboxTexture)
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}
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}
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rl.UnloadDroppedFiles()
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}
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rl.BeginDrawing()
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rl.ClearBackground(rl.White)
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rl.BeginMode3D(camera)
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// we are inside the cube, we need to disable backface culling
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rl.DisableBackfaceCulling()
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rl.DisableDepthMask()
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rl.DrawModel(skybox, rl.NewVector3(0, 0, 0), 1.0, rl.White)
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// restore depth and backface culling
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rl.EnableBackfaceCulling()
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rl.EnableDepthMask()
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rl.DrawGrid(10, 1.0)
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rl.EndMode3D()
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rl.DrawText(
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fmt.Sprintf("File: %s", skyboxFilename),
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10,
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int32(rl.GetScreenHeight()-20),
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10,
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rl.Black,
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)
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rl.DrawFPS(10, 10)
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rl.EndDrawing()
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}
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rl.UnloadModel(skybox)
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rl.UnloadTexture(skyboxTexture)
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rl.UnloadShader(skyboxShader)
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rl.CloseWindow()
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}
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func setShaderIntValue(shader rl.Shader, name string, value int32) {
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rl.SetShaderValue(
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shader,
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rl.GetShaderLocation(shader, name),
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unsafe.Slice((*float32)(unsafe.Pointer(&value)), 4),
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rl.ShaderUniformInt,
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)
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}
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