public static void Initialize(GLContext control)
{
if (DefaultShaderProgram != null)
{
return;
}
if (DefaultShaderProgram == null)
{
string frag = System.IO.File.ReadAllText("Shaders/FinalHDR.frag");
string vert = System.IO.File.ReadAllText("Shaders/FinalHDR.vert");
DefaultShaderProgram = new ShaderProgram(
new FragmentShader(frag),
new VertexShader(vert));
int buffer = GL.GenBuffer();
vao = new VertexBufferObject(buffer);
vao.AddAttribute(0, 2, VertexAttribPointerType.Float, false, 16, 0);
vao.AddAttribute(1, 2, VertexAttribPointerType.Float, false, 16, 8);
vao.Initialize();
Vector2[] positions = new Vector2[4]
{
new Vector2(-1.0f, 1.0f),
new Vector2(-1.0f, -1.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, -1.0f),
};
Vector2[] texCoords = new Vector2[4]
{
new Vector2(0.0f, 1.0f),
new Vector2(0.0f, 0.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, 0.0f),
};
List <float> list = new List <float>();
for (int i = 0; i < 4; i++)
{
list.Add(positions[i].X);
list.Add(positions[i].Y);
list.Add(texCoords[i].X);
list.Add(texCoords[i].Y);
}
Length = 4;
float[] data = list.ToArray();
GL.BufferData(BufferTarget.ArrayBuffer, sizeof(float) * data.Length, data, BufferUsageHint.StaticDraw);
}
}
public void UpdateVaoAttributes()
{
vao.Clear();
var strideTotal = Attributes.Sum(x => x.Stride);
for (int i = 0; i < Attributes.Count; i++)
{
var att = Attributes[i];
vao.AddAttribute(
att.UniformName,
att.ElementCount,
att.Type,
false,
strideTotal,
att.Offset);
}
vao.Initialize();
}
public static void Init()
{
if (Length == 0)
{
int buffer = GL.GenBuffer();
vao = new VertexBufferObject(buffer);
vao.AddAttribute(0, 2, VertexAttribPointerType.Float, false, 16, 0);
vao.AddAttribute(1, 2, VertexAttribPointerType.Float, false, 16, 8);
vao.Initialize();
Vector2[] positions = new Vector2[4]
{
new Vector2(-1.0f, 1.0f),
new Vector2(-1.0f, -1.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, -1.0f),
};
Vector2[] texCoords = new Vector2[4]
{
new Vector2(0.0f, 1.0f),
new Vector2(0.0f, 0.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, 0.0f),
};
List <float> list = new List <float>();
for (int i = 0; i < 4; i++)
{
list.Add(positions[i].X);
list.Add(positions[i].Y);
list.Add(texCoords[i].X);
list.Add(texCoords[i].Y);
}
Length = 4;
float[] data = list.ToArray();
GL.BufferData(BufferTarget.ArrayBuffer, sizeof(float) * data.Length, data, BufferUsageHint.StaticDraw);
}
}
public static void Init()
{
if (Length == 0)
{
int buffer = GL.GenBuffer();
vao = new VertexBufferObject(buffer);
vao.AddAttribute(0, 2, VertexAttribPointerType.Float, false, 8, 0);
vao.Initialize();
Length = 1;
}
}
private void CheckBuffers(GLContext control)
{
bool buffersWereInitialized = vbo_position != 0;
if (!buffersWereInitialized)
{
GL.GenBuffers(1, out vbo_position);
vbo = new VertexBufferObject(vbo_position);
vbo.AddAttribute("point", 4, VertexAttribPointerType.Float, false, 16, 0);
vbo.Initialize();
UpdateVertexData(control);
}
}
public void UpdateVertexData()
{
Vector3[] vertices = new Vector3[3];
vertices[0] = new Vector3(-1f, -1f, 1f);
vertices[1] = new Vector3(3f, -1f, 1f);
vertices[2] = new Vector3(-1f, 3f, 1f);
GL.GenBuffers(1, out vbo_position);
GL.BindBuffer(BufferTarget.ArrayBuffer, vbo_position);
GL.BufferData <Vector3>(BufferTarget.ArrayBuffer,
new IntPtr(vertices.Length * Vector3.SizeInBytes),
vertices, BufferUsageHint.StaticDraw);
vao = new VertexBufferObject(vbo_position);
vao.AddAttribute(0, 3, VertexAttribPointerType.Float, false, 12, 0);
vao.Initialize();
Prepare();
GLErrorHandler.CheckGLError();
}
public static void Initialize(GLContext control)
{
if (DefaultShaderProgram != null)
{
return;
}
if (DefaultShaderProgram == null)
{
string vert = @"#version 330
layout (location = 0) in vec2 aPos;
layout (location = 1) in vec2 aTexCoords;
out vec2 TexCoords;
void main()
{
gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);
TexCoords = aTexCoords;
}";
string frag = @"#version 330 core
out vec4 FragColor;
in vec2 TexCoords;
uniform sampler2D scene;
uniform sampler2D bloomBlur;
uniform float exposure;
void main()
{
const float gamma = 2.2;
vec3 hdrColor = texture(scene, TexCoords).rgb;
vec3 bloomColor = texture(bloomBlur, TexCoords).rgb * 0.7f;
hdrColor += bloomColor; // additive blending
// tone mapping
// vec3 result = vec3(1.0) - exp(-hdrColor * exposure);
FragColor = vec4(hdrColor, 1.0);
}";
DefaultShaderProgram = new ShaderProgram(
new FragmentShader(frag), new VertexShader(vert));
int buffer = GL.GenBuffer();
vao = new VertexBufferObject(buffer);
vao.AddAttribute(0, 2, VertexAttribPointerType.Float, false, 16, 0);
vao.AddAttribute(1, 2, VertexAttribPointerType.Float, false, 16, 8);
vao.Initialize();
Vector2[] positions = new Vector2[4]
{
new Vector2(-1.0f, 1.0f),
new Vector2(-1.0f, -1.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, -1.0f),
};
Vector2[] texCoords = new Vector2[4]
{
new Vector2(0.0f, 1.0f),
new Vector2(0.0f, 0.0f),
new Vector2(1.0f, 1.0f),
new Vector2(1.0f, 0.0f),
};
List <float> list = new List <float>();
for (int i = 0; i < 4; i++)
{
list.Add(positions[i].X);
list.Add(positions[i].Y);
list.Add(texCoords[i].X);
list.Add(texCoords[i].Y);
}
Length = 4;
float[] data = list.ToArray();
GL.BufferData(BufferTarget.ArrayBuffer, sizeof(float) * data.Length, data, BufferUsageHint.StaticDraw);
}
else
{
vao.Initialize();
DefaultShaderProgram.Link();
}
}
