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make a Texture object

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This commit is contained in:
Colin McMillen 2023-06-29 15:51:42 -04:00
parent 5e178aae1f
commit d3e7718b5f
1 changed files with 52 additions and 26 deletions
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78
Program.cs
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@ -103,7 +103,7 @@ void main() {
~Shader() { ~Shader() {
if (disposedValue == false) { if (disposedValue == false) {
Console.WriteLine("GPU Resource leak! Did you forget to call Dispose()?"); Console.WriteLine("~Shader(): resource leak? Dispose() should be called manually.");
} }
} }
@ -122,6 +122,53 @@ void main() {
} }
public class Texture : IDisposable {
public int Handle;
public Texture(string path) {
Image<Rgba32> image = Image.Load<Rgba32>(path);
Console.WriteLine($"{image.Width}x{image.Height}");
//foreach (IExifValue exif in image.Metadata.ExifProfile.Values) {
// Console.WriteLine($"{exif.Tag} : {exif.GetValue()}");
//}
byte[] pixelBytes = new byte[image.Width * image.Height * Unsafe.SizeOf<Rgba32>()];
image.CopyPixelDataTo(pixelBytes);
image.Dispose();
Handle = GL.GenTexture();
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, Handle);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, image.Width, image.Height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, pixelBytes);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int) TextureMinFilter.LinearMipmapLinear); // FIXME: is this right?
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int) TextureMagFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int) TextureWrapMode.ClampToBorder);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int) TextureWrapMode.ClampToBorder);
float[] borderColor = { 0.0f, 0.0f, 0.0f, 1.0f };
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureBorderColor, borderColor);
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
}
private bool disposedValue = false;
protected virtual void Dispose(bool disposing) {
if (!disposedValue) {
GL.DeleteTexture(Handle);
disposedValue = true;
}
}
~Texture() {
if (!disposedValue) {
Console.WriteLine("~Texture(): resource leak? Dispose() should be called manually.");
}
}
public void Dispose() {
Dispose(true);
GC.SuppressFinalize(this);
}
}
public class Game : GameWindow { public class Game : GameWindow {
public Game(GameWindowSettings gwSettings, NativeWindowSettings nwSettings) : base(gwSettings, nwSettings) { } public Game(GameWindowSettings gwSettings, NativeWindowSettings nwSettings) : base(gwSettings, nwSettings) { }
@ -144,7 +191,7 @@ public class Game : GameWindow {
int VertexBufferObject; int VertexBufferObject;
int ElementBufferObject; int ElementBufferObject;
int VertexArrayObject; int VertexArrayObject;
int texture; Texture texture;
Shader shader; Shader shader;
Matrix4 projection; Matrix4 projection;
@ -191,29 +238,8 @@ public class Game : GameWindow {
GL.EnableVertexAttribArray(texCoordLocation); GL.EnableVertexAttribArray(texCoordLocation);
GL.VertexAttribPointer(texCoordLocation, 2, VertexAttribPointerType.Float, false, 5 * sizeof(float), 3 * sizeof(float)); GL.VertexAttribPointer(texCoordLocation, 2, VertexAttribPointerType.Float, false, 5 * sizeof(float), 3 * sizeof(float));
// Decode a JPEG image. // Load textures from JPEGs.
//Image<Rgba32> image = Image.Load<Rgba32>(@"c:\users\colin\pictures\texture.jpg"); texture = new Texture(@"c:\users\colin\pictures\photos\2023\06\27\DSC_0035.jpg");
Image<Rgba32> image = Image.Load<Rgba32>(@"c:\users\colin\pictures\photos\2023\06\27\DSC_0035.jpg");
Console.WriteLine($"{image.Width}x{image.Height}");
//foreach (IExifValue exif in image.Metadata.ExifProfile.Values) {
// Console.WriteLine($"{exif.Tag} : {exif.GetValue()}");
//}
byte[] pixelBytes = new byte[image.Width * image.Height * Unsafe.SizeOf<Rgba32>()];
image.CopyPixelDataTo(pixelBytes);
image.Dispose();
// TODO: put the texture into an actual class.
texture = GL.GenTexture();
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, texture);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, image.Width, image.Height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, pixelBytes);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int) TextureMinFilter.LinearMipmapLinear); // FIXME: is this right?
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int) TextureMagFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int) TextureWrapMode.ClampToBorder);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int) TextureWrapMode.ClampToBorder);
float[] borderColor = { 0.0f, 0.0f, 0.0f, 1.0f };
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureBorderColor, borderColor);
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
} }
protected override void OnUnload() { protected override void OnUnload() {
@ -226,7 +252,7 @@ public class Game : GameWindow {
GL.Clear(ClearBufferMask.ColorBufferBit); GL.Clear(ClearBufferMask.ColorBufferBit);
GL.BindVertexArray(VertexArrayObject); GL.BindVertexArray(VertexArrayObject);
GL.ActiveTexture(TextureUnit.Texture0); GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, texture); GL.BindTexture(TextureTarget.Texture2D, texture.Handle);
shader.Use(); shader.Use();
GL.DrawElements(PrimitiveType.Triangles, indices.Length, DrawElementsType.UnsignedInt, 0); GL.DrawElements(PrimitiveType.Triangles, indices.Length, DrawElementsType.UnsignedInt, 0);
SwapBuffers(); SwapBuffers();