//[-------------------------------------------------------]
//[ Public virtual IApplication methods ]
//[-------------------------------------------------------]
void FirstGeometryShader::onInitialization()
{
// Call the base implementation
IApplicationRenderer::onInitialization();
// Get and check the renderer instance
// -> Geometry shaders supported?
Renderer::IRendererPtr renderer(getRenderer());
if (nullptr != renderer && renderer->getCapabilities().maximumNumberOfGsOutputVertices)
{
// Begin debug event
RENDERER_BEGIN_DEBUG_EVENT_FUNCTION(renderer)
// Decide which shader language should be used (for example "GLSL", "HLSL" or "Cg")
Renderer::IShaderLanguagePtr shaderLanguage(renderer->getShaderLanguage());
if (nullptr != shaderLanguage)
{
{ // Create the program
// Get the shader source code (outsourced to keep an overview)
const char *vertexShaderSourceCode = nullptr;
const char *geometryShaderSourceCode = nullptr;
const char *fragmentShaderSourceCode = nullptr;
#include "FirstGeometryShader_GLSL_330.h"
#include "FirstGeometryShader_HLSL_D3D10_D3D11.h"
#include "FirstGeometryShader_Null.h"
// Create the program
mProgram = shaderLanguage->createProgram(
shaderLanguage->createVertexShader(vertexShaderSourceCode),
shaderLanguage->createGeometryShader(geometryShaderSourceCode, Renderer::GsInputPrimitiveTopology::POINTS, Renderer::GsOutputPrimitiveTopology::TRIANGLE_STRIP, 3),
shaderLanguage->createFragmentShader(fragmentShaderSourceCode));
}
// TODO(co) Attribute less rendering (aka "drawing without data") possible with OpenGL? For me it appears not to work, I see nothing and also get no error...
// -> Tested with: "Radeon HD 6970M", driver "catalyst_12-7_beta_windows7_20120629.exe"
// -> According to http://renderingpipeline.com/2012/03/are-vertex-shaders-obsolete/ it should work
// -> Apparently there are currently some issues when using this approach: http://www.opengl.org/discussion_boards/showthread.php/177372-Rendering-simple-shapes-without-passing-vertices
if (nullptr != mProgram && 0 == strcmp(renderer->getName(), "OpenGL"))
{
// Create the vertex buffer object (VBO)
static const float VERTEX_POSITION[] =
{ // Vertex ID
42.0f // 0
};
Renderer::IVertexBufferPtr vertexBuffer(renderer->createVertexBuffer(sizeof(VERTEX_POSITION), VERTEX_POSITION, Renderer::BufferUsage::STATIC_DRAW));
// Create vertex array object (VAO)
// -> The vertex array object (VAO) keeps a reference to the used vertex buffer object (VBO)
// -> This means that there's no need to keep an own vertex buffer object (VBO) reference
// -> When the vertex array object (VAO) is destroyed, it automatically decreases the
// reference of the used vertex buffer objects (VBO). If the reference counter of a
// vertex buffer object (VBO) reaches zero, it's automatically destroyed.
const Renderer::VertexArrayAttribute vertexArray[] =
{
{ // Attribute 0
// Data destination
Renderer::VertexArrayFormat::FLOAT_1, // vertexArrayFormat (Renderer::VertexArrayFormat::Enum)
"Position", // name[64] (char)
"POSITION", // semantic[64] (char)
0, // semanticIndex (unsigned int)
// Data source
vertexBuffer, // vertexBuffer (Renderer::IVertexBuffer *)
0, // offset (unsigned int)
sizeof(float), // stride (unsigned int)
// Data source, instancing part
0 // instancesPerElement (unsigned int)
}
};
mVertexArray = mProgram->createVertexArray(sizeof(vertexArray) / sizeof(Renderer::VertexArrayAttribute), vertexArray);
}
}
// End debug event
RENDERER_END_DEBUG_EVENT(renderer)
}
//[-------------------------------------------------------]
//[ Public virtual IApplication methods ]
//[-------------------------------------------------------]
void FirstTriangle::onInitialization()
{
// Call the base implementation
IApplicationRenderer::onInitialization();
// Get and check the renderer instance
Renderer::IRendererPtr renderer(getRenderer());
if (nullptr != renderer)
{
// Begin debug event
RENDERER_BEGIN_DEBUG_EVENT_FUNCTION(renderer)
// Decide which shader language should be used (for example "GLSL", "HLSL" or "Cg")
Renderer::IShaderLanguagePtr shaderLanguage(renderer->getShaderLanguage());
if (nullptr != shaderLanguage)
{
{ // Create the program
// Get the shader source code (outsourced to keep an overview)
const char *vertexShaderSourceCode = nullptr;
const char *fragmentShaderSourceCode = nullptr;
#include "FirstTriangle_Cg.h"
#include "FirstTriangle_GLSL_110.h"
#include "FirstTriangle_GLSL_ES2.h"
#include "FirstTriangle_HLSL_D3D9_D3D10_D3D11.h"
#include "FirstTriangle_Null.h"
// Create the vertex shader
Renderer::IVertexShader *vertexShader = shaderLanguage->createVertexShader(vertexShaderSourceCode);
RENDERER_SET_RESOURCE_DEBUG_NAME(vertexShader, "Triangle VS")
// Create the fragment shader
Renderer::IFragmentShader *fragmentShader = shaderLanguage->createFragmentShader(fragmentShaderSourceCode);
RENDERER_SET_RESOURCE_DEBUG_NAME(fragmentShader, "Triangle FS")
// Create the program
mProgram = shaderLanguage->createProgram(vertexShader, fragmentShader);
RENDERER_SET_RESOURCE_DEBUG_NAME(mProgram, "Triangle program")
}
// Is there a valid program?
if (nullptr != mProgram)
{
// Create the vertex buffer object (VBO)
// -> Clip space vertex positions, left/bottom is (-1,-1) and right/top is (1,1)
static const float VERTEX_POSITION[] =
{ // Vertex ID Triangle on screen
0.0f, 1.0f, // 0 0
1.0f, 0.0f, // 1 . .
-0.5f, 0.0f // 2 2.......1
};
Renderer::IVertexBufferPtr vertexBuffer(renderer->createVertexBuffer(sizeof(VERTEX_POSITION), VERTEX_POSITION, Renderer::BufferUsage::STATIC_DRAW));
RENDERER_SET_RESOURCE_DEBUG_NAME(vertexBuffer, "Triangle VBO")
// Create vertex array object (VAO)
// -> The vertex array object (VAO) keeps a reference to the used vertex buffer object (VBO)
// -> This means that there's no need to keep an own vertex buffer object (VBO) reference
// -> When the vertex array object (VAO) is destroyed, it automatically decreases the
// reference of the used vertex buffer objects (VBO). If the reference counter of a
// vertex buffer object (VBO) reaches zero, it's automatically destroyed.
const Renderer::VertexArrayAttribute vertexArray[] =
{
{ // Attribute 0
// Data destination
Renderer::VertexArrayFormat::FLOAT_2, // vertexArrayFormat (Renderer::VertexArrayFormat::Enum)
"Position", // name[64] (char)
"POSITION", // semantic[64] (char)
0, // semanticIndex (unsigned int)
// Data source
vertexBuffer, // vertexBuffer (Renderer::IVertexBuffer *)
0, // offset (unsigned int)
sizeof(float) * 2, // stride (unsigned int)
// Data source, instancing part
0 // instancesPerElement (unsigned int)
}
};
mVertexArray = mProgram->createVertexArray(sizeof(vertexArray) / sizeof(Renderer::VertexArrayAttribute), vertexArray);
RENDERER_SET_RESOURCE_DEBUG_NAME(mVertexArray, "Triangle VAO")
}
}
//[-------------------------------------------------------]
//[ Public virtual IApplication methods ]
//[-------------------------------------------------------]
void Fxaa::onInitialization()
{
// Call the base implementation
IApplicationRenderer::onInitialization();
// Get and check the renderer instance
Renderer::IRendererPtr renderer(getRenderer());
if (nullptr != renderer)
{
// Begin debug event
RENDERER_BEGIN_DEBUG_EVENT_FUNCTION(renderer)
// Create the framebuffer object (FBO) instance by using the current window size
recreateFramebuffer();
{ // Create sampler state
// -> Our texture does not have any mipmaps, set "Renderer::SamplerState::maxLOD" to zero
// in order to ensure a correct behaviour across the difference graphics APIs
// -> When not doing this you usually have no issues when using OpenGL, OpenGL ES 2, Direct 10,
// Direct3D 11 or Direct3D 9 with the "ps_2_0"-profile, but when using Direct3D 9 with the
// "ps_3_0"-profile you might get into trouble due to another internal graphics API behaviour
Renderer::SamplerState samplerState = Renderer::ISamplerState::getDefaultSamplerState();
samplerState.maxLOD = 0.0f; // We don't use mipmaps
mSamplerState = renderer->createSamplerState(samplerState);
}
{ // Depth stencil state
// -> By default depth test is enabled
// -> In this simple example we don't need depth test, so, disable it so we don't need to care about the depth buffer
// Create depth stencil state
Renderer::DepthStencilState depthStencilState = Renderer::IDepthStencilState::getDefaultDepthStencilState();
depthStencilState.depthEnable = false;
mDepthStencilState = renderer->createDepthStencilState(depthStencilState);
// Set the depth stencil state directly within this initialization phase, we don't change it later on
renderer->omSetDepthStencilState(mDepthStencilState);
}
// Decide which shader language should be used (for example "GLSL", "HLSL" or "Cg")
Renderer::IShaderLanguagePtr shaderLanguage(renderer->getShaderLanguage());
if (nullptr != shaderLanguage)
{
{ // Create the program for scene rendering
// Get the shader source code (outsourced to keep an overview)
const char *vertexShaderSourceCode = nullptr;
const char *fragmentShaderSourceCode = nullptr;
#include "Fxaa_SceneRendering_Cg.h"
#include "Fxaa_SceneRendering_GLSL_120.h"
#include "Fxaa_SceneRendering_GLSL_ES2.h"
#include "Fxaa_SceneRendering_HLSL_D3D9_D3D10_D3D11.h"
#include "Fxaa_SceneRendering_Null.h"
// Create the program for scene rendering
mProgramSceneRendering = shaderLanguage->createProgram(shaderLanguage->createVertexShader(vertexShaderSourceCode), shaderLanguage->createFragmentShader(fragmentShaderSourceCode));
}
// Is there a valid program for scene rendering?
if (nullptr != mProgramSceneRendering)
{
// Create the vertex buffer object (VBO)
// -> Clip space vertex positions, left/bottom is (-1,-1) and right/top is (1,1)
static const float VERTEX_POSITION[] =
{ // Vertex ID Triangle on screen
0.0f, 1.0f, // 0 0
1.0f, 0.0f, // 1 . .
-0.5f, 0.0f // 2 2.......1
};
Renderer::IVertexBufferPtr vertexBuffer(renderer->createVertexBuffer(sizeof(VERTEX_POSITION), VERTEX_POSITION, Renderer::BufferUsage::STATIC_DRAW));
// Create vertex array object (VAO)
// -> The vertex array object (VAO) keeps a reference to the used vertex buffer object (VBO)
// -> This means that there's no need to keep an own vertex buffer object (VBO) reference
// -> When the vertex array object (VAO) is destroyed, it automatically decreases the
// reference of the used vertex buffer objects (VBO). If the reference counter of a
// vertex buffer object (VBO) reaches zero, it's automatically destroyed.
const Renderer::VertexArrayAttribute vertexArray[] =
{
{ // Attribute 0
// Data destination
Renderer::VertexArrayFormat::FLOAT_2, // vertexArrayFormat (Renderer::VertexArrayFormat::Enum)
"Position", // name[64] (char)
"POSITION", // semantic[64] (char)
0, // semanticIndex (unsigned int)
// Data source
vertexBuffer, // vertexBuffer (Renderer::IVertexBuffer *)
0, // offset (unsigned int)
sizeof(float) * 2, // stride (unsigned int)
// Data source, instancing part
0 // instancesPerElement (unsigned int)
}
};
mVertexArraySceneRendering = mProgramSceneRendering->createVertexArray(sizeof(vertexArray) / sizeof(Renderer::VertexArrayAttribute), vertexArray);
}
// Create the post-processing program instance by using the current window size
recreatePostProcessingProgram();
// Is there a valid program for post-processing?
if (nullptr != mProgramPostProcessing)
{
// Create the vertex buffer object (VBO)
// -> Clip space vertex positions, left/bottom is (-1,-1) and right/top is (1,1)
static const float VERTEX_POSITION[] =
{ // Vertex ID Triangle strip on screen
-1.0f, -1.0f, // 0 1.......3
-1.0f, 1.0f, // 1 . . .
1.0f, -1.0f, // 2 0.......2
1.0f, 1.0f // 3
};
Renderer::IVertexBufferPtr vertexBuffer(renderer->createVertexBuffer(sizeof(VERTEX_POSITION), VERTEX_POSITION, Renderer::BufferUsage::STATIC_DRAW));
// Create vertex array object (VAO)
// -> The vertex array object (VAO) keeps a reference to the used vertex buffer object (VBO)
// -> This means that there's no need to keep an own vertex buffer object (VBO) reference
// -> When the vertex array object (VAO) is destroyed, it automatically decreases the
// reference of the used vertex buffer objects (VBO). If the reference counter of a
// vertex buffer object (VBO) reaches zero, it's automatically destroyed.
const Renderer::VertexArrayAttribute vertexArray[] =
{
{ // Attribute 0
// Data destination
Renderer::VertexArrayFormat::FLOAT_2, // vertexArrayFormat (Renderer::VertexArrayFormat::Enum)
"Position", // name[64] (char)
"POSITION", // semantic[64] (char)
0, // semanticIndex (unsigned int)
// Data source
vertexBuffer, // vertexBuffer (Renderer::IVertexBuffer *)
0, // offset (unsigned int)
sizeof(float) * 2, // stride (unsigned int)
// Data source, instancing part
0 // instancesPerElement (unsigned int)
}
};
mVertexArrayPostProcessing = mProgramSceneRendering->createVertexArray(sizeof(vertexArray) / sizeof(Renderer::VertexArrayAttribute), vertexArray);
}
}
// End debug event
RENDERER_END_DEBUG_EVENT(renderer)
}
//[-------------------------------------------------------]
//[ Public virtual IApplication methods ]
//[-------------------------------------------------------]
void FirstMesh::onInitialization()
{
// Call the base implementation
IApplicationRendererRuntime::onInitialization();
// Get and check the renderer runtime instance
RendererRuntime::IRendererRuntime* rendererRuntime = getRendererRuntime();
if (nullptr != rendererRuntime)
{
Renderer::IRendererPtr renderer(getRenderer());
// Create uniform buffers
// -> Direct3D 9 and OpenGL ES 2 do not support uniform buffers
// -> Direct3D 10, 11 and 12 do not support individual uniforms
// -> The renderer is just a light weight abstraction layer, so we need to handle the differences
if ((0 == strcmp(renderer->getName(), "Direct3D10") || 0 == strcmp(renderer->getName(), "Direct3D11") || 0 == strcmp(renderer->getName(), "Direct3D12")))
{
// Allocate enough memory for two 4x4 floating point matrices
mUniformBuffer = rendererRuntime->getBufferManager().createUniformBuffer(2 * 4 * 4 * sizeof(float), nullptr, Renderer::BufferUsage::DYNAMIC_DRAW);
}
// Decide which shader language should be used (for example "GLSL" or "HLSL")
Renderer::IShaderLanguagePtr shaderLanguage(renderer->getShaderLanguage());
if (nullptr != shaderLanguage)
{
// Vertex input layout
const Renderer::VertexAttribute vertexAttributesLayout[] =
{
{ // Attribute 0
// Data destination
Renderer::VertexAttributeFormat::FLOAT_3, // vertexAttributeFormat (Renderer::VertexAttributeFormat)
"Position", // name[32] (char)
"POSITION", // semanticName[32] (char)
0, // semanticIndex (uint32_t)
// Data source
0, // inputSlot (uint32_t)
0, // alignedByteOffset (uint32_t)
// Data source, instancing part
0 // instancesPerElement (uint32_t)
},
{ // Attribute 1
// Data destination
Renderer::VertexAttributeFormat::SHORT_2, // vertexAttributeFormat (Renderer::VertexAttributeFormat)
"TexCoord", // name[32] (char)
"TEXCOORD", // semanticName[32] (char)
0, // semanticIndex (uint32_t)
// Data source
0, // inputSlot (uint32_t)
sizeof(float) * 3, // alignedByteOffset (uint32_t)
// Data source, instancing part
0 // instancesPerElement (uint32_t)
},
{ // Attribute 2
// Data destination
Renderer::VertexAttributeFormat::SHORT_4, // vertexAttributeFormat (Renderer::VertexAttributeFormat)
"QTangent", // name[32] (char)
"TEXCOORD", // semanticName[32] (char)
1, // semanticIndex (uint32_t)
// Data source
0, // inputSlot (uint32_t)
sizeof(float) * 3 + sizeof(short) * 2, // alignedByteOffset (uint32_t)
// Data source, instancing part
0 // instancesPerElement (uint32_t)
}
};
const Renderer::VertexAttributes vertexAttributes(glm::countof(vertexAttributesLayout), vertexAttributesLayout);
{ // Create the root signature
Renderer::DescriptorRangeBuilder ranges[6];
ranges[0].initialize(Renderer::DescriptorRangeType::UBV, 1, 0, "UniformBlockDynamicVs", 0);
ranges[1].initializeSampler(1, 0);
ranges[2].initialize(Renderer::DescriptorRangeType::SRV, 1, 0, "DiffuseMap", 1);
ranges[3].initialize(Renderer::DescriptorRangeType::SRV, 1, 1, "EmissiveMap", 1);
ranges[4].initialize(Renderer::DescriptorRangeType::SRV, 1, 2, "NormalMap", 1);
ranges[5].initialize(Renderer::DescriptorRangeType::SRV, 1, 3, "SpecularMap", 1);
Renderer::RootParameterBuilder rootParameters[6];
rootParameters[0].initializeAsDescriptorTable(1, &ranges[0], Renderer::ShaderVisibility::VERTEX);
rootParameters[1].initializeAsDescriptorTable(1, &ranges[1], Renderer::ShaderVisibility::FRAGMENT);
rootParameters[2].initializeAsDescriptorTable(1, &ranges[2], Renderer::ShaderVisibility::FRAGMENT);
rootParameters[3].initializeAsDescriptorTable(1, &ranges[3], Renderer::ShaderVisibility::FRAGMENT);
rootParameters[4].initializeAsDescriptorTable(1, &ranges[4], Renderer::ShaderVisibility::FRAGMENT);
rootParameters[5].initializeAsDescriptorTable(1, &ranges[5], Renderer::ShaderVisibility::FRAGMENT);
// Setup
Renderer::RootSignatureBuilder rootSignature;
rootSignature.initialize(glm::countof(rootParameters), rootParameters, 0, nullptr, Renderer::RootSignatureFlags::ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT);
// Create the instance
mRootSignature = renderer->createRootSignature(rootSignature);
}
// Create the program
Renderer::IProgramPtr program;
{
// Get the shader source code (outsourced to keep an overview)
const char *vertexShaderProfile = nullptr;
const char *vertexShaderSourceCode = nullptr;
const char *fragmentShaderProfile = nullptr;
const char *fragmentShaderSourceCode = nullptr;
#include "FirstMesh_GLSL_410.h"
#include "FirstMesh_GLSL_ES2.h"
#include "FirstMesh_HLSL_D3D9.h"
#include "FirstMesh_HLSL_D3D10_D3D11_D3D12.h"
#include "FirstMesh_Null.h"
// Create the program
mProgram = program = shaderLanguage->createProgram(
*mRootSignature,
vertexAttributes,
shaderLanguage->createVertexShaderFromSourceCode(vertexAttributes, vertexShaderSourceCode, vertexShaderProfile),
shaderLanguage->createFragmentShaderFromSourceCode(fragmentShaderSourceCode, fragmentShaderProfile));
}
// Is there a valid program?
if (nullptr != program)
{
// Create the pipeline state object (PSO)
mPipelineState = renderer->createPipelineState(Renderer::PipelineStateBuilder(mRootSignature, program, vertexAttributes));
// Optimization: Cached data to not bother the renderer API too much
if (nullptr == mUniformBuffer)
{
mObjectSpaceToClipSpaceMatrixUniformHandle = program->getUniformHandle("ObjectSpaceToClipSpaceMatrix");
mObjectSpaceToViewSpaceMatrixUniformHandle = program->getUniformHandle("ObjectSpaceToViewSpaceMatrix");
}
}
// Create mesh instance
mMeshResourceId = rendererRuntime->getMeshResourceManager().loadMeshResourceByAssetId("Example/Mesh/Character/Imrod");
{ // Load in the diffuse, emissive, normal and specular texture
// -> The tangent space normal map is stored with three components, two would be enough to recalculate the third component within the fragment shader
// -> The specular map could be put into the alpha channel of the diffuse map instead of storing it as an individual texture
RendererRuntime::TextureResourceManager& textureResourceManager = rendererRuntime->getTextureResourceManager();
mDiffuseTextureResourceId = textureResourceManager.loadTextureResourceByAssetId("Example/Texture/Character/ImrodDiffuseMap");
mNormalTextureResourceId = textureResourceManager.loadTextureResourceByAssetId("Example/Texture/Character/ImrodEmissiveMap");
mSpecularTextureResourceId = textureResourceManager.loadTextureResourceByAssetId("Example/Texture/Character/ImrodNormalMap");
mEmissiveTextureResourceId = textureResourceManager.loadTextureResourceByAssetId("Example/Texture/Character/ImrodSpecularMap");
}
{ // Create sampler state
Renderer::SamplerState samplerStateSettings = Renderer::ISamplerState::getDefaultSamplerState();
samplerStateSettings.addressU = Renderer::TextureAddressMode::WRAP;
samplerStateSettings.addressV = Renderer::TextureAddressMode::WRAP;
mSamplerState = renderer->createSamplerState(samplerStateSettings);
}
}
}
}
//[-------------------------------------------------------]
//[ Public virtual IApplication methods ]
//[-------------------------------------------------------]
void FirstGeometryShader::onInitialization()
{
// Call the base implementation
IApplicationRenderer::onInitialization();
// Get and check the renderer instance
// -> Geometry shaders supported?
Renderer::IRendererPtr renderer(getRenderer());
if (nullptr != renderer && renderer->getCapabilities().maximumNumberOfGsOutputVertices)
{
// Create the buffer manager
mBufferManager = renderer->createBufferManager();
{ // Create the root signature
// Setup
Renderer::RootSignatureBuilder rootSignature;
rootSignature.initialize(0, nullptr, 0, nullptr, Renderer::RootSignatureFlags::ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT);
// Create the instance
mRootSignature = renderer->createRootSignature(rootSignature);
}
// Vertex input layout
const Renderer::VertexAttribute vertexAttributesLayout[] =
{
{ // Attribute 0
// Data destination
Renderer::VertexAttributeFormat::FLOAT_1, // vertexAttributeFormat (Renderer::VertexAttributeFormat)
"Position", // name[32] (char)
"POSITION", // semanticName[32] (char)
0, // semanticIndex (uint32_t)
// Data source
0, // inputSlot (uint32_t)
0, // alignedByteOffset (uint32_t)
// Data source, instancing part
0 // instancesPerElement (uint32_t)
}
};
const Renderer::VertexAttributes vertexAttributes(glm::countof(vertexAttributesLayout), vertexAttributesLayout);
{ // Create vertex array object (VAO)
// Create the vertex buffer object (VBO)
static const float VERTEX_POSITION[] =
{ // Vertex ID
42.0f // 0
};
Renderer::IVertexBufferPtr vertexBuffer(mBufferManager->createVertexBuffer(sizeof(VERTEX_POSITION), VERTEX_POSITION, Renderer::BufferUsage::STATIC_DRAW));
// Create vertex array object (VAO)
// -> The vertex array object (VAO) keeps a reference to the used vertex buffer object (VBO)
// -> This means that there's no need to keep an own vertex buffer object (VBO) reference
// -> When the vertex array object (VAO) is destroyed, it automatically decreases the
// reference of the used vertex buffer objects (VBO). If the reference counter of a
// vertex buffer object (VBO) reaches zero, it's automatically destroyed.
const Renderer::VertexArrayVertexBuffer vertexArrayVertexBuffers[] =
{
{ // Vertex buffer 0
vertexBuffer, // vertexBuffer (Renderer::IVertexBuffer *)
sizeof(float) // strideInBytes (uint32_t)
}
};
mVertexArray = mBufferManager->createVertexArray(vertexAttributes, glm::countof(vertexArrayVertexBuffers), vertexArrayVertexBuffers);
}
// Create the program: Decide which shader language should be used (for example "GLSL" or "HLSL")
Renderer::IShaderLanguagePtr shaderLanguage(renderer->getShaderLanguage());
if (nullptr != shaderLanguage)
{
// Create the program
Renderer::IProgramPtr program;
{
// Get the shader source code (outsourced to keep an overview)
const char *vertexShaderSourceCode = nullptr;
const char *geometryShaderSourceCode = nullptr;
const char *fragmentShaderSourceCode = nullptr;
#include "FirstGeometryShader_GLSL_410.h"
#include "FirstGeometryShader_HLSL_D3D10_D3D11_D3D12.h"
#include "FirstGeometryShader_Null.h"
// Create the program
program = shaderLanguage->createProgram(
*mRootSignature,
vertexAttributes,
shaderLanguage->createVertexShaderFromSourceCode(vertexAttributes, vertexShaderSourceCode),
shaderLanguage->createGeometryShaderFromSourceCode(geometryShaderSourceCode, Renderer::GsInputPrimitiveTopology::POINTS, Renderer::GsOutputPrimitiveTopology::TRIANGLE_STRIP, 3),
shaderLanguage->createFragmentShaderFromSourceCode(fragmentShaderSourceCode));
}
// Create the pipeline state object (PSO)
if (nullptr != program)
{
Renderer::PipelineState pipelineState = Renderer::PipelineStateBuilder(mRootSignature, program, vertexAttributes);
pipelineState.primitiveTopologyType = Renderer::PrimitiveTopologyType::POINT;
mPipelineState = renderer->createPipelineState(pipelineState);
}
}
// Since we're always submitting the same commands to the renderer, we can fill the command buffer once during initialization and then reuse it multiple times during runtime
fillCommandBuffer();
}
}
//[-------------------------------------------------------]
//[ Public methods ]
//[-------------------------------------------------------]
CubeRendererDrawInstanced::CubeRendererDrawInstanced(Renderer::IRenderer &renderer, unsigned int numberOfTextures, unsigned int sceneRadius) :
mRenderer(&renderer),
mNumberOfTextures(numberOfTextures),
mSceneRadius(sceneRadius),
mMaximumNumberOfInstancesPerBatch(0),
mNumberOfBatches(0),
mBatches(nullptr)
{
// Begin debug event
RENDERER_BEGIN_DEBUG_EVENT_FUNCTION(&renderer)
// Check number of textures (limit of this implementation and renderer limit)
if (mNumberOfTextures > MAXIMUM_NUMBER_OF_TEXTURES)
{
mNumberOfTextures = MAXIMUM_NUMBER_OF_TEXTURES;
}
if (mNumberOfTextures > mRenderer->getCapabilities().maximumNumberOf2DTextureArraySlices)
{
mNumberOfTextures = mRenderer->getCapabilities().maximumNumberOf2DTextureArraySlices;
}
// Get the maximum number of instances per batch
// -> In this application, this depends on the maximum texture buffer size
// -> /2 -> One instance requires two texels
mMaximumNumberOfInstancesPerBatch = mRenderer->getCapabilities().maximumTextureBufferSize / 2;
{ // Create the textures
static const unsigned int TEXTURE_WIDTH = 128;
static const unsigned int TEXTURE_HEIGHT = 128;
static const unsigned int NUMBER_OF_BYTES = TEXTURE_WIDTH * TEXTURE_HEIGHT * 4;
// Allocate memory for the 2D texture array
unsigned char *data = new unsigned char[NUMBER_OF_BYTES * mNumberOfTextures];
{ // Fill the texture content
// TODO(co) Be a little bit more creative while filling the texture data
unsigned char *dataCurrent = data;
const float colors[][MAXIMUM_NUMBER_OF_TEXTURES] =
{
{ 1.0f, 0.0f, 0.0f},
{ 0.0f, 0.1f, 0.0f},
{ 0.0f, 0.0f, 0.1f},
{ 0.5f, 0.5f, 0.5f},
{ 1.0f, 1.0f, 1.0f},
{ 0.1f, 0.2f, 0.2f},
{ 0.2f, 0.5f, 0.5f},
{ 0.1f, 0.8f, 0.2f}
};
for (unsigned int j = 0; j < mNumberOfTextures; ++j)
{
// Random content
for (unsigned int i = 0; i < TEXTURE_WIDTH * TEXTURE_HEIGHT; ++i)
{
*dataCurrent = static_cast<unsigned char>((rand() % 255) * colors[j][0]);
++dataCurrent;
*dataCurrent = static_cast<unsigned char>((rand() % 255) * colors[j][1]);
++dataCurrent;
*dataCurrent = static_cast<unsigned char>((rand() % 255) * colors[j][2]);
++dataCurrent;
*dataCurrent = 255;
++dataCurrent;
}
}
}
// Create the texture instance
// -> By using 2D array textures together with OpenGL/Direct3D 11 instancing we get a handy implementation
// -> This limits of course the cross platform support, fallback solutions might be a good idea in productive code
// -> A fallback is not really required in our example situation because we're using draw instanced which already requires a more modern graphics card
mTexture2DArray = mRenderer->createTexture2DArray(TEXTURE_WIDTH, TEXTURE_HEIGHT, mNumberOfTextures, Renderer::TextureFormat::R8G8B8A8, data, Renderer::TextureFlag::MIPMAPS);
// Free texture memory
delete [] data;
}
// Create sampler state
mSamplerState = mRenderer->createSamplerState(Renderer::ISamplerState::getDefaultSamplerState());
// Decide which shader language should be used (for example "GLSL", "HLSL" or "Cg")
Renderer::IShaderLanguagePtr shaderLanguage(mRenderer->getShaderLanguage());
if (nullptr != shaderLanguage)
{
// Uniform buffer object (UBO, "constant buffer" in Direct3D terminology) supported?
// -> If they are there, we really want to use them (performance and ease of use)
if (mRenderer->getCapabilities().uniformBuffer)
{
{ // Create and set constant program uniform buffer at once
// TODO(co) Uggly fixed hacked in model-view-projection matrix
// TODO(co) OpenGL matrix, Direct3D has minor differences within the projection matrix we have to compensate
static const float MVP[] =
{
1.2803299f, -0.97915620f, -0.58038759f, -0.57922798f,
0.0f, 1.9776078f, -0.57472473f, -0.573576453f,
-1.2803299f, -0.97915620f, -0.58038759f, -0.57922798f,
0.0f, 0.0f, 9.8198195f, 10.0f
};
mUniformBufferStaticVs = shaderLanguage->createUniformBuffer(sizeof(MVP), MVP, Renderer::BufferUsage::STATIC_DRAW);
}
// Create dynamic uniform buffers
mUniformBufferDynamicVs = shaderLanguage->createUniformBuffer(sizeof(float) * 2, nullptr, Renderer::BufferUsage::DYNAMIC_DRAW);
mUniformBufferDynamicFs = shaderLanguage->createUniformBuffer(sizeof(float) * 3, nullptr, Renderer::BufferUsage::DYNAMIC_DRAW);
}
{ // Create the program
// Get the shader source code (outsourced to keep an overview)
const char *vertexShaderSourceCode = nullptr;
const char *fragmentShaderSourceCode = nullptr;
#include "CubeRendererDrawInstanced_GLSL_140.h"
#include "CubeRendererDrawInstanced_HLSL_D3D10_D3D11.h"
#include "CubeRendererDrawInstanced_Null.h"
// Create the program
mProgram = shaderLanguage->createProgram(
shaderLanguage->createVertexShader(vertexShaderSourceCode),
shaderLanguage->createFragmentShader(fragmentShaderSourceCode));
}
// Is there a valid program?
if (nullptr != mProgram)
{
// Create the vertex buffer object (VBO)
static const float VERTEX_POSITION[] =
{
// Front face
// Position TexCoord Normal // Vertex ID
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, // 0
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, // 1
0.5f, 0.5f, 0.5f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, // 2
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, // 3
// Back face
-0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 0.0f,-1.0f, // 4
-0.5f, 0.5f, -0.5f, 1.0f, 1.0f, 0.0f, 0.0f,-1.0f, // 5
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f,-1.0f, // 6
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, 0.0f, 0.0f,-1.0f, // 7
// Top face
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, // 8
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, // 9
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, // 10
0.5f, 0.5f, -0.5f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, // 11
// Bottom face
-0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 0.0f,-1.0f, 0.0f, // 12
0.5f, -0.5f, -0.5f, 0.0f, 1.0f, 0.0f,-1.0f, 0.0f, // 13
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 0.0f,-1.0f, 0.0f, // 14
-0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,-1.0f, 0.0f, // 15
// Right face
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, // 16
0.5f, 0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, // 17
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, // 18
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, // 19
// Left face
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, // 20
-0.5f, -0.5f, 0.5f, 1.0f, 0.0f, -1.0f, 0.0f, 0.0f, // 21
-0.5f, 0.5f, 0.5f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, // 22
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, -1.0f, 0.0f, 0.0f // 23
};
Renderer::IVertexBufferPtr vertexBuffer(mRenderer->createVertexBuffer(sizeof(VERTEX_POSITION), VERTEX_POSITION, Renderer::BufferUsage::STATIC_DRAW));
// Create the index buffer object (IBO)
static const unsigned short INDICES[] =
{
// Front face Triangle ID
1, 0, 2, // 0
3, 2, 0, // 1
// Back face
6, 5, 4, // 2
4, 7, 6, // 3
// Top face
9, 8, 10, // 4
11, 10, 8, // 5
// Bottom face
13, 12, 14, // 6
15, 14, 12, // 7
// Right face
17, 16, 18, // 8
19, 18, 16, // 9
// Left face
21, 20, 22, // 10
23, 22, 20 // 11
};
Renderer::IIndexBuffer *indexBuffer = mRenderer->createIndexBuffer(sizeof(INDICES), Renderer::IndexBufferFormat::UNSIGNED_SHORT, INDICES, Renderer::BufferUsage::STATIC_DRAW);
// Create vertex array object (VAO)
// -> The vertex array object (VAO) keeps a reference to the used vertex buffer object (VBO)
// -> This means that there's no need to keep an own vertex buffer object (VBO) reference
// -> When the vertex array object (VAO) is destroyed, it automatically decreases the
// reference of the used vertex buffer objects (VBO). If the reference counter of a
// vertex buffer object (VBO) reaches zero, it's automatically destroyed.
const Renderer::VertexArrayAttribute vertexArray[] =
{
{ // Attribute 0
// Data destination
Renderer::VertexArrayFormat::FLOAT_3, // vertexArrayFormat (Renderer::VertexArrayFormat::Enum)
"Position", // name[64] (char)
"POSITION", // semantic[64] (char)
0, // semanticIndex (unsigned int)
// Data source
vertexBuffer, // vertexBuffer (Renderer::IVertexBuffer *)
0, // offset (unsigned int)
sizeof(float) * (3 + 2 + 3), // stride (unsigned int)
// Data source, instancing part
0 // instancesPerElement (unsigned int)
},
{ // Attribute 1
// Data destination
Renderer::VertexArrayFormat::FLOAT_2, // vertexArrayFormat (Renderer::VertexArrayFormat::Enum)
"TexCoord", // name[64] (char)
"TEXCOORD", // semantic[64] (char)
0, // semanticIndex (unsigned int)
// Data source
vertexBuffer, // vertexBuffer (Renderer::IVertexBuffer *)
sizeof(float) * 3, // offset (unsigned int)
sizeof(float) * (3 + 2 + 3), // stride (unsigned int)
// Data source, instancing part
0 // instancesPerElement (unsigned int)
},
{ // Attribute 2
// Data destination
Renderer::VertexArrayFormat::FLOAT_3, // vertexArrayFormat (Renderer::VertexArrayFormat::Enum)
"Normal", // name[64] (char)
"NORMAL", // semantic[64] (char)
0, // semanticIndex (unsigned int)
// Data source
vertexBuffer, // pertexBuffer (Renderer::IVertexBuffer *)
sizeof(float) * (3 + 2), // offset (unsigned int)
sizeof(float) * (3 + 2 + 3), // stride (unsigned int)
// Data source, instancing part
0 // instancesPerElement (unsigned int)
}
};
mVertexArray = mProgram->createVertexArray(sizeof(vertexArray) / sizeof(Renderer::VertexArrayAttribute), vertexArray, indexBuffer);
}
}
// End debug event
RENDERER_END_DEBUG_EVENT(&renderer)
}
//[-------------------------------------------------------]
//[ Public virtual IApplication methods ]
//[-------------------------------------------------------]
void IcosahedronTessellation::onInitialization()
{
// Call the base implementation
IApplicationRenderer::onInitialization();
// Get and check the renderer instance
// -> Uniform buffer object (UBO, "constant buffer" in Direct3D terminology) supported?
// -> Geometry shaders supported?
// -> Tessellation control and tessellation evaluation shaders supported?
Renderer::IRendererPtr renderer(getRenderer());
if (nullptr != renderer && renderer->getCapabilities().uniformBuffer && renderer->getCapabilities().maximumNumberOfGsOutputVertices > 0 && renderer->getCapabilities().maximumNumberOfPatchVertices > 0)
{
// Begin debug event
RENDERER_BEGIN_DEBUG_EVENT_FUNCTION(renderer)
// Decide which shader language should be used (for example "GLSL", "HLSL" or "Cg")
Renderer::IShaderLanguagePtr shaderLanguage(renderer->getShaderLanguage());
if (nullptr != shaderLanguage)
{
// Create uniform buffers and fill the static buffers at once
mUniformBufferDynamicTcs = shaderLanguage->createUniformBuffer(sizeof(float) * 2, nullptr, Renderer::BufferUsage::DYNAMIC_DRAW);
{ // "ObjectSpaceToClipSpaceMatrix"
// TODO(co) Cleanup, correct aspect ratio
glm::mat4 View = glm::translate(glm::mat4(1.0f), glm::vec3(0.0f, 0.0f, -3.0f));
glm::mat4 Model = glm::scale(glm::mat4(1.0f), glm::vec3(1.0f));
glm::mat4 Projection = glm::perspective(45.0f, 4.0f / 3.0f, 0.001f, 1000.0f);
glm::mat4 MVP = Projection * View;
// glm::mat4 MVP = Projection * View * Model;
mUniformBufferStaticTes = shaderLanguage->createUniformBuffer(sizeof(float) * 4 * 4, glm::value_ptr(MVP), Renderer::BufferUsage::STATIC_DRAW);
{ // "NormalMatrix"
View = glm::translate(glm::mat4(1.0f), glm::vec3(0.0f, 0.0f, 0.0f));
Model = glm::scale(glm::mat4(1.0f), glm::vec3(1.0f));
Projection = glm::perspective(45.0f, 4.0f / 3.0f, 0.001f, 1000.0f);
MVP = Projection * View;
glm::mat3 nMVP(MVP);
glm::mat4 tMVP(nMVP);
mUniformBufferStaticGs = shaderLanguage->createUniformBuffer(sizeof(float) * 4 * 4, glm::value_ptr(tMVP), Renderer::BufferUsage::STATIC_DRAW);
}
}
{ // Light and material
static const float LIGHT_AND_MATERIAL[] =
{
0.25f, 0.25f, 1.0f, 1.0, // "LightPosition"
0.0f, 0.75f, 0.75f,1.0, // "DiffuseMaterial"
0.04f, 0.04f, 0.04f,1.0, // "AmbientMaterial"
};
mUniformBufferStaticFs = shaderLanguage->createUniformBuffer(sizeof(LIGHT_AND_MATERIAL), LIGHT_AND_MATERIAL, Renderer::BufferUsage::STATIC_DRAW);
}
{ // Create the program
// Get the shader source code (outsourced to keep an overview)
const char *vertexShaderSourceCode = nullptr;
const char *tessellationControlShaderSourceCode = nullptr;
const char *tessellationEvaluationShaderSourceCode = nullptr;
const char *geometryShaderSourceCode = nullptr;
const char *fragmentShaderSourceCode = nullptr;
#include "IcosahedronTessellation_GLSL_400.h"
#include "IcosahedronTessellation_HLSL_D3D11.h"
#include "IcosahedronTessellation_Null.h"
// Create the program
mProgram = shaderLanguage->createProgram(
shaderLanguage->createVertexShader(vertexShaderSourceCode),
shaderLanguage->createTessellationControlShader(tessellationControlShaderSourceCode),
shaderLanguage->createTessellationEvaluationShader(tessellationEvaluationShaderSourceCode),
shaderLanguage->createGeometryShader(geometryShaderSourceCode, Renderer::GsInputPrimitiveTopology::TRIANGLES, Renderer::GsOutputPrimitiveTopology::TRIANGLE_STRIP, 3),
shaderLanguage->createFragmentShader(fragmentShaderSourceCode));
}
// Is there a valid program?
if (nullptr != mProgram)
{
// Create the vertex buffer object (VBO)
// -> Geometry is from: http://prideout.net/blog/?p=48 (Philip Rideout, "The Little Grasshopper - Graphics Programming Tips")
static const float VERTEX_POSITION[] =
{ // Vertex ID
0.000f, 0.000f, 1.000f, // 0
0.894f, 0.000f, 0.447f, // 1
0.276f, 0.851f, 0.447f, // 2
-0.724f, 0.526f, 0.447f, // 3
-0.724f, -0.526f, 0.447f, // 4
0.276f, -0.851f, 0.447f, // 5
0.724f, 0.526f, -0.447f, // 6
-0.276f, 0.851f, -0.447f, // 7
-0.894f, 0.000f, -0.447f, // 8
-0.276f, -0.851f, -0.447f, // 9
0.724f, -0.526f, -0.447f, // 10
0.000f, 0.000f, -1.000f // 11
};
Renderer::IVertexBufferPtr vertexBuffer(renderer->createVertexBuffer(sizeof(VERTEX_POSITION), VERTEX_POSITION, Renderer::BufferUsage::STATIC_DRAW));
// Create the index buffer object (IBO)
// -> Geometry is from: http://prideout.net/blog/?p=48 (Philip Rideout, "The Little Grasshopper - Graphics Programming Tips")
static const unsigned short INDICES[] =
{ // Triangle ID
2, 1, 0, // 0
3, 2, 0, // 1
4, 3, 0, // 2
5, 4, 0, // 3
1, 5, 0, // 4
11, 6, 7, // 5
11, 7, 8, // 6
11, 8, 9, // 7
11, 9, 10, // 8
11, 10, 6, // 9
1, 2, 6, // 10
2, 3, 7, // 11
3, 4, 8, // 12
4, 5, 9, // 13
5, 1, 10, // 14
2, 7, 6, // 15
3, 8, 7, // 16
4, 9, 8, // 17
5, 10, 9, // 18
1, 6, 10 // 19
};
Renderer::IIndexBuffer *indexBuffer = renderer->createIndexBuffer(sizeof(INDICES), Renderer::IndexBufferFormat::UNSIGNED_SHORT, INDICES, Renderer::BufferUsage::STATIC_DRAW);
// Create vertex array object (VAO)
// -> The vertex array object (VAO) keeps a reference to the used vertex buffer object (VBO)
// -> This means that there's no need to keep an own vertex buffer object (VBO) reference
// -> When the vertex array object (VAO) is destroyed, it automatically decreases the
// reference of the used vertex buffer objects (VBO). If the reference counter of a
// vertex buffer object (VBO) reaches zero, it's automatically destroyed.
const Renderer::VertexArrayAttribute vertexArray[] =
{
{ // Attribute 0
// Data destination
Renderer::VertexArrayFormat::FLOAT_3, // vertexArrayFormat (Renderer::VertexArrayFormat::Enum)
"Position", // name[64] (char)
"POSITION", // semantic[64] (char)
0, // semanticIndex (unsigned int)
// Data source
vertexBuffer, // vertexBuffer (Renderer::IVertexBuffer *)
0, // offset (unsigned int)
sizeof(float) * 3, // stride (unsigned int)
// Data source, instancing part
0 // instancesPerElement (unsigned int)
}
};
mVertexArray = mProgram->createVertexArray(sizeof(vertexArray) / sizeof(Renderer::VertexArrayAttribute), vertexArray, indexBuffer);
}
}
// End debug event
RENDERER_END_DEBUG_EVENT(renderer)
}
