public void Draw(Matrix4 mvpMatrix)
{
Shader shader = OpenTKSharedResources.shaders["SolidColor3D"];
if (!shader.ProgramCreatedSuccessfully)
{
return;
}
// Set up.
shader.UseProgram();
shader.EnableVertexAttributes();
positionBuffer.Bind();
// Set shader values.
Matrix4 matrix = mvpMatrix;
shader.SetMatrix4x4("mvpMatrix", ref matrix);
// Draw.
int rectangularPrismVertCount = 24;
GL.DrawArrays(PrimitiveType.TriangleFan, 0, rectangularPrismVertCount);
shader.DisableVertexAttributes();
}
private void SetScaleUniform()
{
Shader shader = OpenTKSharedResources.shaders["SolidColor3D"];
shader.UseProgram();
shader.SetVector3("scale", scaleX, scaleY, scaleZ);
}
private void SetCenterUniform(float centerX, float centerY, float centerZ)
{
Shader shader = OpenTKSharedResources.shaders["SolidColor3D"];
shader.UseProgram();
shader.SetVector3("center", centerX, centerY, centerZ);
}
private void SetColorUniform()
{
Shader shader = OpenTKSharedResources.shaders["SolidColor3D"];
shader.UseProgram();
shader.SetVector4("color", color);
}
private static void DrawPolygonUv(NUD.Polygon p, int windowWidth, int windowHeight)
{
Shader shader = OpenTKSharedResources.shaders["UV"];
shader.UseProgram();
shader.EnableVertexAttributes();
uvPositionVbo.Bind();
// Draw over everything
GL.Disable(EnableCap.DepthTest);
GL.Disable(EnableCap.CullFace);
GL.Clear(ClearBufferMask.DepthBufferBit);
// Scale to 0 to 1 UV space and flip vertically.
Matrix4 matrix = Matrix4.CreateOrthographicOffCenter(0, 1, 1, 0, -1, 1);
shader.SetMatrix4x4("mvpMatrix", ref matrix);
SetVertexAttributes(shader);
// Draw the uvs.
GL.LineWidth(1.5f);
GL.Enable(EnableCap.LineSmooth);
uvElementsIbo.Bind();
GL.DrawElements(PrimitiveType.Triangles, p.displayFaceSize, DrawElementsType.UnsignedInt, p.Offset);
shader.DisableVertexAttributes();
}
public static void DrawRectangularPrism(Matrix4 mvpMatrix, float scaleX = 1, float scaleY = 1, float scaleZ = 1,
float centerX = 0, float centerY = 0, float centerZ = 0)
{
Shader shader = OpenTKSharedResources.shaders["SolidColor3D"];
if (!shader.ProgramCreatedSuccessfully)
{
return;
}
// Set up.
shader.UseProgram();
shader.EnableVertexAttributes();
rectangularPrismPositionBuffer.Bind();
// Set shader values.
SetVertexAttributes(shader);
SetShaderUniforms(mvpMatrix, scaleX, scaleY, scaleZ, centerX, centerY, centerZ, shader);
// Draw.
int rectangularPrismVertCount = 24;
GL.DrawArrays(PrimitiveType.TriangleFan, 0, rectangularPrismVertCount);
shader.DisableVertexAttributes();
}
public static void DrawQuadGradient(Vector3 topColor, Vector3 bottomColor, VertexArrayObject screenVao)
{
// draw RGB and alpha channels of texture to screen quad
Shader shader = OpenTKSharedResources.shaders["Gradient"];
shader.UseProgram();
EnableAlphaBlendingWhiteBackground();
shader.SetVector3("topColor", topColor);
shader.SetVector3("bottomColor", bottomColor);
DrawScreenTriangle(shader, screenVao);
}
public static void DrawScreenQuadPostProcessing(int texture0, int texture1, VertexArrayObject screenVao)
{
// Draws RGB and alpha channels of texture to screen quad.
Shader shader = OpenTKSharedResources.shaders["ScreenQuad"];
shader.UseProgram();
shader.SetTexture("image0", texture0, TextureTarget.Texture2D, 0);
shader.SetTexture("image1", texture1, TextureTarget.Texture2D, 1);
shader.SetBoolToInt("renderBloom", Runtime.renderBloom);
shader.SetFloat("bloomIntensity", Runtime.bloomIntensity);
ShaderTools.SystemColorVector3Uniform(shader, Runtime.backgroundGradientBottom, "backgroundBottomColor");
ShaderTools.SystemColorVector3Uniform(shader, Runtime.backgroundGradientTop, "backgroundTopColor");
// Draw full screen "quad" (big triangle)
DrawScreenTriangle(shader, screenVao);
}
public static void DrawNudMaterialSphere(Shader shader, NUD.Material material, Mesh3D screenTriangle, Dictionary <NUD.DummyTextures, Texture> dummyTextures)
{
if (!shader.ProgramCreatedSuccessfully)
{
return;
}
shader.UseProgram();
// Use the same uniforms as the NUD shader.
GenericMaterial genericMaterial = new GenericMaterial();
NudUniforms.SetMaterialPropertyUniforms(genericMaterial, material);
genericMaterial.SetShaderUniforms(shader);
NUD.SetStageLightingUniforms(shader, 0);
ModelContainer.SetRenderSettingsUniforms(shader);
nudSphereCamera.UpdateMatrices();
ModelContainer.SetLightingUniforms(shader, nudSphereCamera);
ModelContainer.SetCameraMatrixUniforms(nudSphereCamera, shader);
// Use default textures rather than textures from the NUT.
NudUniforms.SetTextureUniformsNudMatSphere(shader, material, dummyTextures);
// These values aren't needed in the shader currently.
shader.SetVector3("cameraPosition", 0, 0, 0);
shader.SetFloat("zBufferOffset", 0);
shader.SetFloat("bloomThreshold", Runtime.bloomThreshold);
bool isTransparent = (material.srcFactor > 0) || (material.dstFactor > 0) || (material.alphaFunction > 0) || (material.alphaTest > 0);
shader.SetBoolToInt("isTransparent", isTransparent);
// Set texture uniforms for the mesh attributes.
shader.SetTexture("normalTex", sphereNrmTex.Id, TextureTarget.Texture2D, 15);
shader.SetTexture("uvTex", sphereUvTex.Id, TextureTarget.Texture2D, 16);
shader.SetTexture("tanTex", sphereTanTex.Id, TextureTarget.Texture2D, 17);
shader.SetTexture("bitanTex", sphereBitanTex.Id, TextureTarget.Texture2D, 18);
// Draw full screen "quad" (big triangle)
ScreenDrawing.DrawScreenTriangle(shader, screenTriangle);
}
public static void DrawTexturedQuad(int texture, int width, int height, VertexArrayObject screenVao,
bool renderR = true, bool renderG = true, bool renderB = true, bool renderA = false,
bool keepAspectRatio = false, float intensity = 1, int currentMipLevel = 0)
{
// Draws RGB and alpha channels of texture to screen quad.
Shader shader = OpenTKSharedResources.shaders["Texture"];
shader.UseProgram();
EnableAlphaBlendingWhiteBackground();
// Single texture uniform.
shader.SetTexture("image", texture, TextureTarget.Texture2D, 0);
// Channel toggle uniforms.
shader.SetBoolToInt("renderR", renderR);
shader.SetBoolToInt("renderG", renderG);
shader.SetBoolToInt("renderB", renderB);
shader.SetBoolToInt("renderAlpha", renderA);
shader.SetFloat("intensity", intensity);
bool alphaOverride = renderA && !renderR && !renderG && !renderB;
shader.SetBoolToInt("alphaOverride", alphaOverride);
// Perform aspect ratio calculations in shader.
// This only displays correctly if the viewport is square.
shader.SetBoolToInt("preserveAspectRatio", keepAspectRatio);
shader.SetFloat("width", width);
shader.SetFloat("height", height);
// Display certain mip levels.
shader.SetInt("currentMipLevel", currentMipLevel);
// Draw full screen "quad" (big triangle)
DrawScreenTriangle(shader, screenVao);
}
private void SetVertexAttributes(Shader shader)
{
shader.UseProgram();
GL.VertexAttribPointer(shader.GetVertexAttributeUniformLocation("position"), 3, VertexAttribPointerType.Float, false, sizeof(float) * 3, 0);
}
