public void RenderPointMultipleColorAttachments()
{
Texture2DDescription description = new Texture2DDescription(1, 1, TextureFormat.RedGreenBlue8, false);
string fs =
@"#version 330
out vec3 RedColor;
out vec3 GreenColor;
void main()
{
RedColor = vec3(1.0, 0.0, 0.0);
GreenColor = vec3(0.0, 1.0, 0.0);
}";
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (Framebuffer framebuffer = window.Context.CreateFramebuffer())
using (Texture2D redTexture = Device.CreateTexture2D(description))
using (Texture2D greenTexture = Device.CreateTexture2D(description))
using (ShaderProgram sp = Device.CreateShaderProgram(ShaderSources.PassThroughVertexShader(), fs))
using (VertexArray va = TestUtility.CreateVertexArray(window.Context, sp.VertexAttributes["position"].Location))
{
Assert.AreNotEqual(sp.FragmentOutputs["RedColor"], sp.FragmentOutputs["GreenColor"]);
framebuffer.ColorAttachments[sp.FragmentOutputs["RedColor"]] = redTexture;
framebuffer.ColorAttachments[sp.FragmentOutputs["GreenColor"]] = greenTexture;
window.Context.Framebuffer = framebuffer;
window.Context.Draw(PrimitiveType.Points, 0, 1, new DrawState(TestUtility.CreateRenderStateWithoutDepthTest(), sp, va), new SceneState());
TestUtility.ValidateColor(redTexture, 255, 0, 0);
TestUtility.ValidateColor(greenTexture, 0, 255, 0);
}
}
public void RenderTexturedPoint()
{
string fs =
@"#version 330
uniform sampler2D textureUnit;
out vec4 FragColor;
void main()
{
FragColor = texture(textureUnit, vec2(0, 0));
}";
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (Framebuffer framebuffer = TestUtility.CreateFramebuffer(window.Context))
using (ShaderProgram sp = Device.CreateShaderProgram(ShaderSources.PassThroughVertexShader(), fs))
using (Texture2D texture = TestUtility.CreateTexture(new BlittableRGBA(Color.FromArgb(0, 255, 0, 0))))
using (VertexArray va = TestUtility.CreateVertexArray(window.Context, sp.VertexAttributes["position"].Location))
{
Uniform <int> textureUniform = (Uniform <int>)sp.Uniforms["textureUnit"];
textureUniform.Value = 0;
window.Context.TextureUnits[0].Texture = texture;
window.Context.TextureUnits[0].TextureSampler = Device.TextureSamplers.NearestClamp;
window.Context.Framebuffer = framebuffer;
window.Context.Draw(PrimitiveType.Points, 0, 1, new DrawState(TestUtility.CreateRenderStateWithoutDepthTest(), sp, va), new SceneState());
TestUtility.ValidateColor(framebuffer.ColorAttachments[0], 255, 0, 0);
}
}
