void drawModel(
GraphicsContext graphics,
Camera camera,
LightModel light,
Model model
)
{
Matrix4 world = model.Posture;
Matrix4 worldViewProj = camera.Projection * camera.View * world;
shaderBumpMap.SetUniformValue(shaderBumpMap.FindUniform("WorldViewProj"), ref worldViewProj);
Matrix4 worldInverse = world.Inverse();
Vector4 localLightPos4 = worldInverse * (new Vector4(light.Position, 1.0f));
Vector3 localLightPos = new Vector3(localLightPos4.X, localLightPos4.Y, localLightPos4.Z);
shaderBumpMap.SetUniformValue(shaderBumpMap.FindUniform("LocalLightPosition"), ref localLightPos);
graphics.SetTexture(0, texNormalMap);
graphics.SetTexture(1, texColorMap);
graphics.SetShaderProgram(shaderBumpMap);
graphics.SetVertexBuffer(0, vbTeapot);
graphics.DrawArrays(model.Mesh.Prim, 0, model.Mesh.IndexCount);
}
void drawModel(
GraphicsContext graphics,
Camera camera,
LightModel light,
Model model
)
{
Matrix4 world = model.Posture;
Matrix4 worldViewProj = camera.Projection * camera.View * world;
shaderToon.SetUniformValue(shaderToon.FindUniform("WorldViewProj"), ref worldViewProj);
// model local Light Direction
Matrix4 worldInverse = world.Inverse();
Vector4 localLightPos4 = worldInverse * (new Vector4(light.Position, 1.0f));
Vector3 localLightDir = new Vector3(-localLightPos4.X, -localLightPos4.Y, -localLightPos4.Z);
localLightDir = localLightDir.Normalize();
shaderToon.SetUniformValue(shaderToon.FindUniform("LocalLightDirection"), ref localLightDir);
// model local eye
Vector4 localEye4 = worldInverse * (new Vector4(camera.Position, 1.0f));
Vector3 localEye = new Vector3(localEye4.X, localEye4.Y, localEye4.Z);
shaderToon.SetUniformValue(shaderToon.FindUniform("EyePosition"), ref localEye);
graphics.SetShaderProgram(shaderToon);
graphics.SetVertexBuffer(0, vbTeapot);
graphics.SetTexture(0, texToon);
graphics.DrawArrays(model.Mesh.Prim, 0, model.Mesh.IndexCount);
}
public void Render(
GraphicsContext graphics,
Camera camera,
LightModel light,
Model model,
BgModel bg
)
{
// setup a camera aligned with the light source
float aspect = offWidth / (float)offHeight;
float fov = 45.0f * (float)(FMath.PI / 180.0f);
Matrix4 proj = Matrix4.Perspective( fov,
aspect,
1.0f,
10000.0f );
Matrix4 view = Matrix4.LookAt( light.Position, model.Position, new Vector3( 0.0f, 1.0f, 0.0f ) );
Matrix4 world = model.Posture;
Matrix4 lightVP = proj * view;
// pass 1
renderShadowMap( graphics, lightVP * world, model );
// pass 2
graphics.Clear();
drawModel( graphics, camera, lightVP, model );
light.Render( graphics, camera );
// test
texRenderer.Begin();
int width = texShadow.Width / 2;
int height = texShadow.Height / 2;
texRenderer.Render( texShadow, ShaderCatalog.DspWidth - width, 0, 0, 0, width, height );
texRenderer.End();
}
void drawGround(
GraphicsContext graphics,
Camera camera,
LightModel light
)
{
Matrix4 world = Matrix4.Translation(new Vector3(0.0f, 0.0f, 0.0f));
Matrix4 worldViewProj = camera.Projection * camera.View * world;
// uniform value
shaderBumpMap.SetUniformValue(shaderBumpMap.FindUniform("WorldViewProj"), ref worldViewProj);
Matrix4 worldInverse = world.Inverse();
Vector4 localLightPos4 = worldInverse * (new Vector4(light.Position, 1.0f));
Vector3 localLightPos = new Vector3(localLightPos4.X, localLightPos4.Y, localLightPos4.Z);
shaderBumpMap.SetUniformValue(shaderBumpMap.FindUniform("LocalLightPosition"), ref localLightPos);
graphics.SetShaderProgram(shaderBumpMap);
graphics.SetTexture(0, texNormalMap);
graphics.SetTexture(1, texColorMap);
graphics.SetVertexBuffer(0, vbGrid);
graphics.DrawArrays(meshGrid.Prim, 0, meshGrid.IndexCount);
}
void drawModel(
GraphicsContext graphics,
Camera camera,
LightModel light,
Model model
)
{
Matrix4 world = model.Posture;
Matrix4 worldViewProj = camera.Projection * camera.View * world;
shaderGlossMap.SetUniformValue(shaderGlossMap.FindUniform("WorldViewProj"), ref worldViewProj);
// model local Light Direction
Matrix4 worldInverse = world.Inverse();
Vector4 localLightDir4 = worldInverse * (new Vector4(light.Position, 0));
Vector3 localLightDir = new Vector3(-localLightDir4.X, -localLightDir4.Y, -localLightDir4.Z);
localLightDir = localLightDir.Normalize();
shaderGlossMap.SetUniformValue(shaderGlossMap.FindUniform("LocalLightDirection"), ref localLightDir);
// model local eye
Vector4 localEye4 = worldInverse * (new Vector4(camera.Position, 1.0f));
Vector3 localEye = new Vector3(localEye4.X, localEye4.Y, localEye4.Z);
shaderGlossMap.SetUniformValue(shaderGlossMap.FindUniform("EyePosition"), ref localEye);
// light
Vector4 i_a = light.Ambient;
shaderGlossMap.SetUniformValue(shaderGlossMap.FindUniform("IAmbient"), ref i_a);
Vector4 i_d = light.Color;
shaderGlossMap.SetUniformValue(shaderGlossMap.FindUniform("IDiffuse"), ref i_d);
// material
Vector4 k_a = model.AmbientColor;
shaderGlossMap.SetUniformValue(shaderGlossMap.FindUniform("KAmbient"), ref k_a);
Vector4 k_d = model.DiffuseColor;
shaderGlossMap.SetUniformValue(shaderGlossMap.FindUniform("KDiffuse"), ref k_d);
Vector4 k_s = model.SpecularColor;
shaderGlossMap.SetUniformValue(shaderGlossMap.FindUniform("KSpecular"), ref k_s);
shaderGlossMap.SetUniformValue(shaderGlossMap.FindUniform("Shininess"), 100.0f);
graphics.SetShaderProgram(shaderGlossMap);
graphics.SetTexture(0, glossmap);
graphics.SetVertexBuffer(0, vbTeapot);
graphics.DrawArrays(model.Mesh.Prim, 0, model.Mesh.IndexCount);
}
static void Init()
{
stopwatch = new Stopwatch();
graphics = new GraphicsContext();
SampleDraw.Init(graphics);
DspWidth = graphics.Screen.Width;
DspHeight = graphics.Screen.Height;
sceneList = new List <IScene>();
sceneList.Add(new SceneSimpleShader());
sceneList.Add(new SceneVertexLightingShader());
sceneList.Add(new SceneGouraudShader());
sceneList.Add(new ScenePhongShader());
sceneList.Add(new SceneGlossMapShader());
sceneList.Add(new SceneTextureShader());
sceneList.Add(new SceneMultiTextureShader());
sceneList.Add(new SceneToonShader());
sceneList.Add(new SceneFogShader());
sceneList.Add(new SceneBumpMapShader());
sceneList.Add(new SceneProjectionShadow());
// graphics context
graphics.SetViewport(0, 0, DspWidth, DspHeight);
graphics.SetClearColor(0.0f, 0.5f, 1.0f, 1.0f);
graphics.Enable(EnableMode.DepthTest);
graphics.Enable(EnableMode.CullFace);
graphics.SetCullFace(CullFaceMode.Back, CullFaceDirection.Ccw);
// camera
float aspect = DspWidth / (float)DspHeight;
float fov = FMath.Radians(45.0f);
camera = new Camera(fov, aspect, 10.0f, 100.0f);
// light
light = new LightModel();
light.Color = new Vector4(1.0f, 1.0f, 1.0f, 1.0f);
light.Ambient = new Vector4(0.3f, 0.3f, 0.3f, 1.0f);
// model
// model = new Model( BasicMeshFactory.CreateSphere( 4.0f, 20 ) );
model = new Model(BasicMeshFactory.CreateTorus(3.0f, 1.0f, 40, 12));
model.Position = new Vector3(0.0f, 4.0f, 0.0f);
model.DiffuseColor = new Vector4(0.5f, 0.5f, 1.0f, 1.0f);
model.AmbientColor = new Vector4(1.0f, 1.0f, 1.0f, 1.0f);
model.SpecularColor = new Vector4(1.0f, 1.0f, 1.0f, 1.0f);
// Bg
modelBg = new BgModel(40.0f, 40.0f, 10, 10);
id = 0;
sceneList[id].Setup(graphics, model);
stopwatch.Start();
}
public void Render(
GraphicsContext graphics,
Camera camera,
LightModel light,
Model model,
BgModel bg
)
{
graphics.Clear();
drawModel(graphics, camera, light, model);
light.Render(graphics, camera);
bg.Render(graphics, camera);
}
public void Render(
GraphicsContext graphics,
Camera camera,
LightModel light,
Model model,
BgModel bg
)
{
// offscreen rendering
FrameBuffer oldBuffer = graphics.GetFrameBuffer();
// render the scene
graphics.SetFrameBuffer(sceneBuffer);
graphics.SetViewport(0, 0, sceneBuffer.Width, sceneBuffer.Height);
graphics.SetClearColor(0.0f, 0.5f, 1.0f, 1.0f);
renderSimpleScene(graphics, camera, light, model, bg);
// apply gaussian along X axis
graphics.SetFrameBuffer(gaussianXBuffer);
graphics.SetViewport(0, 0, gaussianXBuffer.Width, gaussianXBuffer.Height);
renderGaussianX(graphics);
// apply gaussian along Y axis
graphics.SetFrameBuffer(gaussianXYBuffer);
graphics.SetViewport(0, 0, gaussianXYBuffer.Width, gaussianXYBuffer.Height);
renderGaussianY(graphics);
// final draw
{
// restore frame buffer
graphics.SetFrameBuffer(oldBuffer);
graphics.SetViewport(0, 0, oldBuffer.Width, oldBuffer.Height);
graphics.SetClearColor(0.0f, 0.5f, 1.0f, 1.0f);
graphics.Clear();
int width = sceneBuffer.Width / 4;
int height = sceneBuffer.Height / 4;
texRenderer.Begin();
texRenderer.Render(texGaussianXY, 0, 0, 0, 0, sceneBuffer.Width, sceneBuffer.Height);
texRenderer.Render(texScene, 0, height * 0, 0, 0, width, height);
texRenderer.Render(texGaussianX, 0, height * 1, 0, 0, width, height);
texRenderer.Render(texGaussianXY, 0, height * 2, 0, 0, width, height);
texRenderer.End();
}
}
void drawModel(
GraphicsContext graphics,
Camera camera,
LightModel light,
Model model
)
{
Matrix4 world = model.Posture;
Matrix4 worldViewProj = camera.Projection * camera.View * world;
shaderVertexLighting.SetUniformValue(shaderVertexLighting.FindUniform("WorldViewProj"), ref worldViewProj);
Matrix4 worldInverse = world.Inverse();
Vector4 localLightPos4 = worldInverse * (new Vector4(light.Position, 1.0f));
Vector3 localLightDir = new Vector3(-localLightPos4.X, -localLightPos4.Y, -localLightPos4.Z);
localLightDir = localLightDir.Normalize();
shaderVertexLighting.SetUniformValue(shaderVertexLighting.FindUniform("LocalLightDirection"), ref localLightDir);
// light
Vector4 i_a = light.Ambient;
shaderVertexLighting.SetUniformValue(shaderVertexLighting.FindUniform("IAmbient"), ref i_a);
Vector4 i_d = light.Color;
shaderVertexLighting.SetUniformValue(shaderVertexLighting.FindUniform("IDiffuse"), ref i_d);
// material
Vector4 k_a = model.DiffuseColor;
shaderVertexLighting.SetUniformValue(shaderVertexLighting.FindUniform("KAmbient"), ref k_a);
Vector4 k_d = model.DiffuseColor;
shaderVertexLighting.SetUniformValue(shaderVertexLighting.FindUniform("KDiffuse"), ref k_d);
graphics.SetShaderProgram(shaderVertexLighting);
graphics.SetVertexBuffer(0, vbTeapot);
graphics.DrawArrays(model.Mesh.Prim, 0, model.Mesh.IndexCount);
}
private void renderSimpleScene(
GraphicsContext graphics,
Camera camera,
LightModel light,
Model model,
BgModel bg
)
{
// rendering
graphics.Clear();
Matrix4 world = model.Posture;
Matrix4 worldViewProj = camera.Projection * camera.View * world;
shaderTexture.SetUniformValue(shaderTexture.FindUniform("WorldViewProj"), ref worldViewProj);
graphics.SetShaderProgram(shaderTexture);
graphics.SetVertexBuffer(0, vbTeapot);
graphics.SetTexture(0, texture);
graphics.DrawArrays(model.Mesh.Prim, 0, model.Mesh.IndexCount);
light.Render(graphics, camera);
bg.Render(graphics, camera);
}
void drawModel(
GraphicsContext graphics,
Camera camera,
LightModel light,
Model model
)
{
// Fog Near - Far
float a_Near = 20.0f;
float a_Far = 80.0f;
shaderFog.SetUniformValue(shaderFog.FindUniform("FogNear"), a_Far / (a_Far - a_Near));
shaderFog.SetUniformValue(shaderFog.FindUniform("FogFar"), -1.0f / (a_Far - a_Near));
// Fog Color
Vector4 a_FogColor = new Vector4(1.0f, 0.0f, 0.0f, 0.0f);
shaderFog.SetUniformValue(shaderFog.FindUniform("FogColor"), ref a_FogColor);
// light
Vector4 i_a = light.Ambient;
shaderFog.SetUniformValue(shaderFog.FindUniform("IAmbient"), ref i_a);
Vector4 i_d = light.Color;
shaderFog.SetUniformValue(shaderFog.FindUniform("IDiffuse"), ref i_d);
// material
Vector4 k_a = model.AmbientColor;
shaderFog.SetUniformValue(shaderFog.FindUniform("KAmbient"), ref k_a);
Vector4 k_d = model.DiffuseColor;
shaderFog.SetUniformValue(shaderFog.FindUniform("KDiffuse"), ref k_d);
for (int z = 0; z < 5; z++)
{
Matrix4 world = Matrix4.Translation(new Vector3(5.0f * z, 0.0f, -12.0f * z)) * model.Posture;
Matrix4 worldViewProj = camera.Projection * camera.View * world;
shaderFog.SetUniformValue(shaderFog.FindUniform("WorldViewProj"), ref worldViewProj);
// model local Light Direction
Matrix4 worldInverse = world.Inverse();
Vector4 localLightPos4 = worldInverse * (new Vector4(light.Position, 1.0f));
Vector3 localLightDir = new Vector3(-localLightPos4.X, -localLightPos4.Y, -localLightPos4.Z);
localLightDir = localLightDir.Normalize();
shaderFog.SetUniformValue(shaderFog.FindUniform("LocalLightDirection"), ref localLightDir);
// model local eye
Vector4 localEye4 = worldInverse * (new Vector4(camera.Position, 1.0f));
Vector3 localEye = new Vector3(localEye4.X, localEye4.Y, localEye4.Z);
shaderFog.SetUniformValue(shaderFog.FindUniform("EyePosition"), ref localEye);
graphics.SetShaderProgram(shaderFog);
graphics.SetVertexBuffer(0, vbTeapot);
graphics.DrawArrays(model.Mesh.Prim, 0, model.Mesh.IndexCount);
}
}
