mirror of
https://github.com/bloeys/nmage.git
synced 2025-12-29 13:28:20 +00:00
Skybox demo
This commit is contained in:
bloeys
@ -2,6 +2,7 @@ package assets
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"image"
|
||||
"image/color"
|
||||
"image/jpeg"
|
||||
@ -259,7 +260,7 @@ func LoadCubemapTextures(rightTex, leftTex, topTex, botTex, frontTex, backTex st
|
||||
imgDecoder = png.Decode
|
||||
pixelDecoder = pixelsFromNrgbaPng
|
||||
} else {
|
||||
panic("unknown image extension: " + ext)
|
||||
return Cubemap{}, fmt.Errorf("unknown image extension: %s. Expected one of: .jpg, .jpeg, .png", ext)
|
||||
}
|
||||
|
||||
cmap := Cubemap{
|
||||
@ -271,8 +272,12 @@ func LoadCubemapTextures(rightTex, leftTex, topTex, botTex, frontTex, backTex st
|
||||
BackPath: backTex,
|
||||
}
|
||||
|
||||
gl.GenTextures(1, &cmap.TexID)
|
||||
gl.BindTexture(gl.TEXTURE_CUBE_MAP, cmap.TexID)
|
||||
|
||||
// The order here matters
|
||||
texturePaths := []string{rightTex, leftTex, topTex, botTex, frontTex, backTex}
|
||||
for i := 0; i < len(texturePaths); i++ {
|
||||
for i := uint32(0); i < uint32(len(texturePaths)); i++ {
|
||||
|
||||
fPath := texturePaths[i]
|
||||
|
||||
@ -289,12 +294,7 @@ func LoadCubemapTextures(rightTex, leftTex, topTex, botTex, frontTex, backTex st
|
||||
|
||||
pixels, width, height := pixelDecoder(img)
|
||||
|
||||
//Prepare opengl stuff
|
||||
gl.GenTextures(1, &cmap.TexID)
|
||||
gl.BindTexture(gl.TEXTURE_CUBE_MAP, cmap.TexID)
|
||||
|
||||
// load and generate the texture
|
||||
gl.TexImage2D(gl.TEXTURE_CUBE_MAP, 0, gl.RGBA8, int32(width), int32(height), 0, gl.RGBA, gl.UNSIGNED_BYTE, unsafe.Pointer(&pixels[0]))
|
||||
gl.TexImage2D(uint32(gl.TEXTURE_CUBE_MAP_POSITIVE_X)+i, 0, gl.RGBA8, int32(width), int32(height), 0, gl.RGBA, gl.UNSIGNED_BYTE, unsafe.Pointer(&pixels[0]))
|
||||
}
|
||||
|
||||
// set the texture wrapping/filtering options (on the currently bound texture object)
|
||||
|
||||
92
main.go
92
main.go
@ -16,6 +16,7 @@ import (
|
||||
"github.com/bloeys/nmage/renderer/rend3dgl"
|
||||
"github.com/bloeys/nmage/timing"
|
||||
nmageimgui "github.com/bloeys/nmage/ui/imgui"
|
||||
"github.com/go-gl/gl/v4.1-core/gl"
|
||||
"github.com/inkyblackness/imgui-go/v4"
|
||||
"github.com/veandco/go-sdl2/sdl"
|
||||
)
|
||||
@ -47,15 +48,19 @@ var (
|
||||
cam *camera.Camera
|
||||
|
||||
simpleMat *materials.Material
|
||||
cubeMesh *meshes.Mesh
|
||||
skyboxMat *materials.Material
|
||||
|
||||
chairMesh *meshes.Mesh
|
||||
cubeMesh *meshes.Mesh
|
||||
skyboxMesh *meshes.Mesh
|
||||
|
||||
cubeModelMat = gglm.NewTrMatId()
|
||||
|
||||
lightPos1 = gglm.NewVec3(-2, 0, 2)
|
||||
lightColor1 = gglm.NewVec3(1, 1, 1)
|
||||
|
||||
debugDrawDepthBuffer bool
|
||||
debugDepthMat *materials.Material
|
||||
debugDrawDepthBuffer bool
|
||||
|
||||
skyboxCmap assets.Cubemap
|
||||
)
|
||||
@ -153,16 +158,27 @@ func (g *OurGame) handleWindowEvents(e sdl.Event) {
|
||||
|
||||
func (g *OurGame) Init() {
|
||||
|
||||
var err error
|
||||
|
||||
//Create materials
|
||||
simpleMat = materials.NewMaterial("Simple mat", "./res/shaders/simple.glsl")
|
||||
debugDepthMat = materials.NewMaterial("Debug depth math", "./res/shaders/debug-depth.glsl")
|
||||
debugDepthMat = materials.NewMaterial("Debug depth mat", "./res/shaders/debug-depth.glsl")
|
||||
skyboxMat = materials.NewMaterial("Skybox mat", "./res/shaders/skybox.glsl")
|
||||
|
||||
//Load meshes
|
||||
var err error
|
||||
cubeMesh, err = meshes.NewMesh("Cube", "./res/models/chair.fbx", 0)
|
||||
// cubeMesh, err = meshes.NewMesh("Cube", "./res/models/tex-cube.fbx", 0)
|
||||
cubeMesh, err = meshes.NewMesh("Cube", "./res/models/tex-cube.fbx", 0)
|
||||
if err != nil {
|
||||
logging.ErrLog.Fatalln("Failed to load cube mesh. Err: ", err)
|
||||
logging.ErrLog.Fatalln("Failed to load mesh. Err: ", err)
|
||||
}
|
||||
|
||||
chairMesh, err = meshes.NewMesh("Chair", "./res/models/chair.fbx", 0)
|
||||
if err != nil {
|
||||
logging.ErrLog.Fatalln("Failed to load mesh. Err: ", err)
|
||||
}
|
||||
|
||||
skyboxMesh, err = meshes.NewMesh("Skybox", "./res/models/skybox-cube.obj", 0)
|
||||
if err != nil {
|
||||
logging.ErrLog.Fatalln("Failed to load mesh. Err: ", err)
|
||||
}
|
||||
|
||||
//Load textures
|
||||
@ -171,16 +187,16 @@ func (g *OurGame) Init() {
|
||||
logging.ErrLog.Fatalln("Failed to load texture. Err: ", err)
|
||||
}
|
||||
|
||||
// skyboxCmap, err = assets.LoadCubemapTextures(
|
||||
// "./res/textures/sb-right.jpg", "./res/textures/sb-left.jpg",
|
||||
// "./res/textures/sb-top.jpg", "./res/textures/sb-bottom.jpg",
|
||||
// "./res/textures/sb-front.jpg", "./res/textures/sb-back.jpg",
|
||||
// )
|
||||
// if err != nil {
|
||||
// logging.ErrLog.Fatalln("Failed to load cubemap. Err: ", err)
|
||||
// }
|
||||
skyboxCmap, err = assets.LoadCubemapTextures(
|
||||
"./res/textures/sb-right.jpg", "./res/textures/sb-left.jpg",
|
||||
"./res/textures/sb-top.jpg", "./res/textures/sb-bottom.jpg",
|
||||
"./res/textures/sb-front.jpg", "./res/textures/sb-back.jpg",
|
||||
)
|
||||
if err != nil {
|
||||
logging.ErrLog.Fatalln("Failed to load cubemap. Err: ", err)
|
||||
}
|
||||
|
||||
//Configure material
|
||||
// Configure materials
|
||||
simpleMat.DiffuseTex = tex.TexID
|
||||
|
||||
//Movement, scale and rotation
|
||||
@ -249,6 +265,8 @@ func (g *OurGame) Update() {
|
||||
if input.KeyClicked(sdl.K_F4) {
|
||||
fmt.Printf("Pos: %s; Forward: %s; |Forward|: %f\n", cam.Pos.String(), cam.Forward.String(), cam.Forward.Mag())
|
||||
}
|
||||
|
||||
g.Win.SDLWin.SetTitle(fmt.Sprint("nMage (", timing.GetAvgFPS(), " fps)"))
|
||||
}
|
||||
|
||||
func (g *OurGame) updateCameraLookAround() {
|
||||
@ -322,13 +340,51 @@ func (g *OurGame) Render() {
|
||||
rowSize := 1
|
||||
for y := 0; y < rowSize; y++ {
|
||||
for x := 0; x < rowSize; x++ {
|
||||
tempModelMatrix.Translate(gglm.NewVec3(-1, 0, 0))
|
||||
tempModelMatrix.Translate(gglm.NewVec3(-6, 0, 0))
|
||||
window.Rend.Draw(cubeMesh, tempModelMatrix, matToUse)
|
||||
}
|
||||
tempModelMatrix.Translate(gglm.NewVec3(float32(rowSize), -1, 0))
|
||||
}
|
||||
|
||||
g.Win.SDLWin.SetTitle(fmt.Sprint("nMage (", timing.GetAvgFPS(), " fps)"))
|
||||
g.DrawSkybox()
|
||||
}
|
||||
|
||||
func (g *OurGame) DrawSkybox() {
|
||||
|
||||
// glDepthMask(GL_FALSE);
|
||||
// skyboxShader.use();
|
||||
// // ... set view and projection matrix
|
||||
// glBindVertexArray(skyboxVAO);
|
||||
// glBindTexture(GL_TEXTURE_CUBE_MAP, cubemapTexture);
|
||||
// glDrawArrays(GL_TRIANGLES, 0, 36);
|
||||
// glDepthMask(GL_TRUE);
|
||||
// // ... draw rest of the scene
|
||||
|
||||
gl.Disable(gl.CULL_FACE)
|
||||
gl.DepthFunc(gl.LEQUAL)
|
||||
skyboxMesh.Buf.Bind()
|
||||
skyboxMat.Bind()
|
||||
gl.ActiveTexture(gl.TEXTURE0)
|
||||
gl.BindTexture(gl.TEXTURE_CUBE_MAP, skyboxCmap.TexID)
|
||||
|
||||
viewMat := cam.ViewMat.Clone()
|
||||
viewMat.Set(0, 3, 0)
|
||||
viewMat.Set(1, 3, 0)
|
||||
viewMat.Set(2, 3, 0)
|
||||
viewMat.Set(3, 0, 0)
|
||||
viewMat.Set(3, 1, 0)
|
||||
viewMat.Set(3, 2, 0)
|
||||
viewMat.Set(3, 3, 0)
|
||||
|
||||
skyboxMat.SetUnifMat4("viewMat", viewMat)
|
||||
skyboxMat.SetUnifMat4("projMat", &cam.ProjMat)
|
||||
// window.Rend.Draw(cubeMesh, gglm.NewTrMatId(), skyboxMat)
|
||||
for i := 0; i < len(skyboxMesh.SubMeshes); i++ {
|
||||
gl.DrawElementsBaseVertexWithOffset(gl.TRIANGLES, skyboxMesh.SubMeshes[i].IndexCount, gl.UNSIGNED_INT, uintptr(skyboxMesh.SubMeshes[i].BaseIndex), skyboxMesh.SubMeshes[i].BaseVertex)
|
||||
}
|
||||
|
||||
gl.DepthFunc(gl.LESS)
|
||||
gl.Enable(gl.CULL_FACE)
|
||||
}
|
||||
|
||||
func (g *OurGame) FrameEnd() {
|
||||
|
||||
@ -1,46 +0,0 @@
|
||||
# Blender v2.92.0 OBJ File: ''
|
||||
# www.blender.org
|
||||
mtllib obj.mtl
|
||||
o Cube
|
||||
v 2.275618 1.000000 0.349413
|
||||
v 3.520138 -1.000000 0.102233
|
||||
v 2.275618 1.000000 0.752820
|
||||
v 3.520138 -1.000000 1.000000
|
||||
v 0.244520 1.000000 0.349413
|
||||
v -1.000000 -1.000000 0.102233
|
||||
v 0.244520 1.000000 0.752820
|
||||
v -1.000000 -1.000000 1.000000
|
||||
vt 0.806168 0.568832
|
||||
vt 0.693832 0.681168
|
||||
vt 0.693832 0.568832
|
||||
vt 0.375000 1.000000
|
||||
vt 0.375000 0.750000
|
||||
vt 0.375000 0.000000
|
||||
vt 0.625000 0.250000
|
||||
vt 0.375000 0.250000
|
||||
vt 0.375000 0.500000
|
||||
vt 0.125000 0.750000
|
||||
vt 0.125000 0.500000
|
||||
vt 0.806168 0.681168
|
||||
vt 0.625000 0.931168
|
||||
vt 0.625000 0.068832
|
||||
vn 0.0000 1.0000 0.0000
|
||||
vn 0.0000 0.1227 0.9924
|
||||
vn -0.8490 0.5283 0.0000
|
||||
vn 0.0000 -1.0000 0.0000
|
||||
vn 0.8490 0.5283 0.0000
|
||||
vn 0.0000 0.1227 -0.9924
|
||||
usemtl Material
|
||||
s off
|
||||
f 5/1/1 3/2/1 1/3/1
|
||||
f 3/2/2 8/4/2 4/5/2
|
||||
f 8/6/3 5/7/3 6/8/3
|
||||
f 2/9/4 8/10/4 6/11/4
|
||||
f 1/3/5 4/5/5 2/9/5
|
||||
f 5/7/6 2/9/6 6/8/6
|
||||
f 5/1/1 7/12/1 3/2/1
|
||||
f 3/2/2 7/13/2 8/4/2
|
||||
f 8/6/3 7/14/3 5/7/3
|
||||
f 2/9/4 4/5/4 8/10/4
|
||||
f 1/3/5 3/2/5 4/5/5
|
||||
f 5/7/6 1/3/6 2/9/6
|
||||
38
res/models/skybox-cube.obj
Executable file
38
res/models/skybox-cube.obj
Executable file
@ -0,0 +1,38 @@
|
||||
# Blender v2.92.0 OBJ File: 'chair.blend'
|
||||
# www.blender.org
|
||||
o Cube.002_Cube.005
|
||||
v -1.000000 -1.000000 1.000000
|
||||
v -1.000000 1.000000 1.000000
|
||||
v -1.000000 -1.000000 -1.000000
|
||||
v -1.000000 1.000000 -1.000000
|
||||
v 1.000000 -1.000000 1.000000
|
||||
v 1.000000 1.000000 1.000000
|
||||
v 1.000000 -1.000000 -1.000000
|
||||
v 1.000000 1.000000 -1.000000
|
||||
vt 0.375000 0.000000
|
||||
vt 0.625000 0.000000
|
||||
vt 0.625000 0.250000
|
||||
vt 0.375000 0.250000
|
||||
vt 0.625000 0.500000
|
||||
vt 0.375000 0.500000
|
||||
vt 0.625000 0.750000
|
||||
vt 0.375000 0.750000
|
||||
vt 0.625000 1.000000
|
||||
vt 0.375000 1.000000
|
||||
vt 0.125000 0.500000
|
||||
vt 0.125000 0.750000
|
||||
vt 0.875000 0.500000
|
||||
vt 0.875000 0.750000
|
||||
vn -1.0000 0.0000 0.0000
|
||||
vn 0.0000 0.0000 -1.0000
|
||||
vn 1.0000 0.0000 0.0000
|
||||
vn 0.0000 0.0000 1.0000
|
||||
vn 0.0000 -1.0000 0.0000
|
||||
vn 0.0000 1.0000 0.0000
|
||||
s off
|
||||
f 1/1/1 2/2/1 4/3/1 3/4/1
|
||||
f 3/4/2 4/3/2 8/5/2 7/6/2
|
||||
f 7/6/3 8/5/3 6/7/3 5/8/3
|
||||
f 5/8/4 6/7/4 2/9/4 1/10/4
|
||||
f 3/11/5 7/6/5 5/8/5 1/12/5
|
||||
f 8/5/6 4/13/6 2/14/6 6/7/6
|
||||
33
res/shaders/skybox.glsl
Executable file
33
res/shaders/skybox.glsl
Executable file
@ -0,0 +1,33 @@
|
||||
//shader:vertex
|
||||
#version 410
|
||||
|
||||
layout(location=0) in vec3 vertPosIn;
|
||||
layout(location=1) in vec3 vertNormalIn;
|
||||
layout(location=2) in vec2 vertUV0In;
|
||||
layout(location=3) in vec3 vertColorIn;
|
||||
|
||||
out vec3 vertUV0;
|
||||
|
||||
uniform mat4 viewMat;
|
||||
uniform mat4 projMat;
|
||||
|
||||
void main()
|
||||
{
|
||||
vertUV0 = vec3(vertPosIn.x, vertPosIn.y, -vertPosIn.z);
|
||||
vec4 pos = projMat * viewMat * vec4(vertPosIn, 1.0);
|
||||
gl_Position = pos.xyww;
|
||||
}
|
||||
|
||||
//shader:fragment
|
||||
#version 410
|
||||
|
||||
in vec3 vertUV0;
|
||||
|
||||
out vec4 fragColor;
|
||||
|
||||
uniform samplerCube skybox;
|
||||
|
||||
void main()
|
||||
{
|
||||
fragColor = texture(skybox, vertUV0);
|
||||
}
|
||||
Reference in New Issue
Block a user