void Demo::Display(float t) {
glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
gWorld = Matrix4::rotationY(t * 60 * 3.14159f / 180.f);
gWorld *= Matrix4::rotationX(-90.0f * 3.14159f / 180.f);
gTime = t;
gExplode = 0.5 * t;
vLightDirs = Vector4(-0.577f, 0.577f, -0.577f, 1.0f);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
mExtrudeEffect.Enable();
gModel.Draw(*this);
glBindFramebuffer(GL_READ_FRAMEBUFFER, mFramebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBlitFramebuffer(0, 0, WindowWidth, WindowHeight,
0, 0, WindowWidth, WindowHeight,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
}
void display(void)
{
// Update our time
static float t = 0.0f;
static uint32_t dwTimeStart = 0;
uint32_t dwTimeCur = GetTickCount();
if( dwTimeStart == 0 )
dwTimeStart = dwTimeCur;
t = ( dwTimeCur - dwTimeStart ) / 1000.0f;
gWorld = Matrix4::rotationY(t);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
mTessEffect.Enable();
gGlobals.InnerFactor = 1+t/2;
gGlobals.OuterFactor = 1+t/2;
SetFloatArray(gWorld, gGlobals.World);
SetFloatArray(gView, gGlobals.View);
SetFloatArray(gProjection, gGlobals.Projection);
mTessEffect.SetVec4(std::string("Globals"), GlobalsVec4Count, (float*)&gGlobals);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gIndexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, gVertexBuffer);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(SimpleVertex), 0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(SimpleVertex), (void*)(sizeof(float)*3));
glPatchParameteri(GL_PATCH_VERTICES, 4);
glDrawElements(GL_PATCHES, 24, GL_UNSIGNED_INT, 0);
glutSwapBuffers();
}
void Demo::Display(float t) {
if(mComputeEnabled)
{
mCompute.Enable();
mCompute.SetFloat(std::string("GlobalsCS.Time"), 1, &gChangesEveryFrame.Time);
glDispatchCompute(32, 32, 1);
}
glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
gWorld = Matrix4::rotationY(180.0f * 3.14159f / 180.f);
gWorld *= Matrix4::rotationX(-90.0f * 3.14159f / 180.f);
gTime = t;
vLightDirs = Vector4(-0.577f, 0.577f, -0.577f, 1.0f);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
mEffect.Enable();
gModel.Draw(*this);
glBindFramebuffer(GL_READ_FRAMEBUFFER, mFramebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
if(mPostFXEnabled)
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDisable(GL_DEPTH_TEST);
mPostProcessEffect.Enable();
//Make the colour and depth buffers available to shaders.
glBindTexture(GL_TEXTURE_2D, mColTex);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
mPostProcessEffect.SetTexture("g_txColourBuffer", 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, mDepthTex);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glActiveTexture(GL_TEXTURE0);
mPostProcessEffect.SetTexture("g_txDepthBuffer", 1);
//Draw post processing quad.
glBindVertexArray(mPostFXVAO);
glEnableVertexAttribArray(0);
glDisableVertexAttribArray(1);
glDisableVertexAttribArray(2);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mPostFXIndexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, mPostFXVertexBuffer);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(PostProcessVertex), 0);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
}
else
{
glBindFramebuffer(GL_READ_FRAMEBUFFER, mFramebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBlitFramebuffer(0, 0, WindowWidth, WindowHeight,
0, 0, WindowWidth, WindowHeight,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
}
}
void display(void)
{
// Update our time
static float t = 0.0f;
static uint32_t dwTimeStart = 0;
uint32_t dwTimeCur = GetTickCount();
if( dwTimeStart == 0 )
dwTimeStart = dwTimeCur;
t = ( dwTimeCur - dwTimeStart ) / 1000.0f;
gWorld = Matrix4::rotationY(t);
Vector4 vLightDirs[2] =
{
Vector4(-0.577f, 0.577f, -0.577f, 1.0f),
Vector4(0.0f, 0.0f, -1.0f, 1.0f),
};
Vector4 vLightColors[2] =
{
Vector4(0.5f, 0.5f, 0.5f, 1.0f),
Vector4(0.5f, 0.0f, 0.0f, 1.0f),
};
Matrix3 rotate;
Vector4 vOutDir;
rotate = Matrix3::rotationY(-2.0f * t);
vLightDirs[1].setXYZ(rowMul (vLightDirs[1].getXYZ(), rotate));
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
mLambertLitEffect.Enable();
SetFloatArray(gWorld, gGlobals.World);
SetFloatArray(gView, gGlobals.View);
SetFloatArray(gProjection, gGlobals.Projection);
SetFloatArray(vLightDirs[0], &gGlobals.vLightDir[0]);
SetFloatArray(vLightDirs[1], &gGlobals.vLightDir[4]);
SetFloatArray(vLightColors[0], &gGlobals.vLightColor[0]);
SetFloatArray(vLightColors[1], &gGlobals.vLightColor[4]);
#if UBO
glBindBuffer(GL_UNIFORM_BUFFER, ubo);
glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(gGlobals), &gGlobals);
mLambertLitEffect.SetUniformBlock(std::string("SharedConsts"), 0, ubo);
#else
mLambertLitEffect.SetVec4(std::string("SharedConsts"), GlobalsVec4Count, (float*)&gGlobals);
#endif
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gIndexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, gVertexBuffer);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(SimpleVertex), 0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(SimpleVertex), (void*)(sizeof(float)*3));
glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_INT, 0);
mSolidColour.Enable();
for(int m = 0; m < 2; m++)
{
Matrix4 light;
Matrix4 lightScale;
Vector4 vLightPos = vLightDirs[m] * 5.0f;
light = Matrix4::translation(vLightPos.getXYZ());
lightScale = Matrix4::scale(Vector3(2.0f, 2.0f, 2.0f));
light = lightScale * light;
SetFloatArray(light, gGlobals.World);
SetFloatArray(vLightColors[m], &gGlobals.vOutputColor[0]);
#if UBO
glBindBuffer(GL_UNIFORM_BUFFER, ubo2);
glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(gGlobals), &gGlobals);
mSolidColour.SetUniformBlock(std::string("SharedConsts"), 1, ubo2);
#else
mSolidColour.SetVec4(std::string("SharedConsts"), GlobalsVec4Count, (float*)&gGlobals);
#endif
glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_INT, 0);
}
glutSwapBuffers();
}
void Init(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glewInit();
glutInitContextVersion (3, 1);
#ifdef _DEBUG
glutInitContextFlags (GLUT_DEBUG);
#endif
glutInitWindowSize (WindowWidth, WindowHeight);
glutInitWindowPosition (50, 50);
glutCreateWindow (argv[0]);
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutKeyboardFunc (keyboard);
glutIdleFunc(display);
glewInit();
#ifdef _DEBUG
SetupOpenGLDebugCallback();
#endif
glFrontFace(GL_CCW);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
glClearColor(0.0f, 0.125f, 0.3f, 1.0f);
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
mLambertLitEffect.Create();
#if UBO
mLambertLitEffect.AddCompileFlags(HLSLCC_FLAG_UNIFORM_BUFFER_OBJECT);
#endif
mLambertLitEffect.FromByteFile(std::string("shaders/LambertLitVS.o"));
mLambertLitEffect.FromByteFile(std::string("shaders/LambertLitPS.o"));
mSolidColour.Create();
#if UBO
mSolidColour.AddCompileFlags(HLSLCC_FLAG_UNIFORM_BUFFER_OBJECT);
#endif
mSolidColour.FromByteFile(std::string("shaders/LambertLitVS.o"));
mSolidColour.FromByteFile(std::string("shaders/LambertLitSolidPS.o"));
#if UBO
mLambertLitEffect.Enable();//Must be linked in order to call CreateUniformBlock.
mLambertLitEffect.CreateUniformBlock(std::string("SharedConsts"), ubo);
mLambertLitEffect.SetUniformBlock(std::string("SharedConsts"), 0, ubo);
mSolidColour.Enable();
mSolidColour.CreateUniformBlock(std::string("SharedConsts"), ubo2);
mSolidColour.SetUniformBlock(std::string("SharedConsts"), 1, ubo2);
#endif
gWorld = Matrix4::identity();
Point3 Eye( 0.0f, 4.0f, -10.0f );
Point3 At( 0.0f, 1.0f, 0.0f );
Vector3 Up( 0.0f, 1.0f, 0.0f );
gView = Matrix4::lookAt(Eye, At, Up);
gProjection = Matrix4::perspective(3.14159f * 0.25f, WindowWidth / ( float )WindowHeight, 0.1f, 100.0f);
uint32_t indices[] =
{
3,1,0,
2,1,3,
6,4,5,
7,4,6,
11,9,8,
10,9,11,
14,12,13,
15,12,14,
19,17,16,
18,17,19,
22,20,21,
23,20,22
};
glGenBuffers(1, &gIndexBuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gIndexBuffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(uint32_t) * 36,
indices, GL_STATIC_DRAW);
SimpleVertex vertices[] =
{
{ { -1.0f, 1.0f, -1.0f }, { 0.0f, 1.0f, 0.0f } },
{ { 1.0f, 1.0f, -1.0f }, { 0.0f, 1.0f, 0.0f } },
{ { 1.0f, 1.0f, 1.0f }, { 0.0f, 1.0f, 0.0f } },
{ { -1.0f, 1.0f, 1.0f }, { 0.0f, 1.0f, 0.0f } },
{ { -1.0f, -1.0f, -1.0f }, { 0.0f, -1.0f, 0.0f } },
{ { 1.0f, -1.0f, -1.0f }, { 0.0f, -1.0f, 0.0f } },
{ { 1.0f, -1.0f, 1.0f }, { 0.0f, -1.0f, 0.0f } },
{ { -1.0f, -1.0f, 1.0f }, { 0.0f, -1.0f, 0.0f } },
{ { -1.0f, -1.0f, 1.0f }, { -1.0f, 0.0f, 0.0f } },
{ { -1.0f, -1.0f, -1.0f }, { -1.0f, 0.0f, 0.0f } },
{ { -1.0f, 1.0f, -1.0f }, { -1.0f, 0.0f, 0.0f } },
{ { -1.0f, 1.0f, 1.0f }, { -1.0f, 0.0f, 0.0f } },
{ { 1.0f, -1.0f, 1.0f }, { 1.0f, 0.0f, 0.0f } },
{ { 1.0f, -1.0f, -1.0f }, { 1.0f, 0.0f, 0.0f } },
{ { 1.0f, 1.0f, -1.0f }, { 1.0f, 0.0f, 0.0f } },
{ { 1.0f, 1.0f, 1.0f }, { 1.0f, 0.0f, 0.0f } },
{ { -1.0f, -1.0f, -1.0f }, { 0.0f, 0.0f, -1.0f } },
{ { 1.0f, -1.0f, -1.0f }, { 0.0f, 0.0f, -1.0f } },
{ { 1.0f, 1.0f, -1.0f }, { 0.0f, 0.0f, -1.0f } },
{ { -1.0f, 1.0f, -1.0f }, { 0.0f, 0.0f, -1.0f } },
{ { -1.0f, -1.0f, 1.0f }, { 0.0f, 0.0f, 1.0f } },
{ { 1.0f, -1.0f, 1.0f }, { 0.0f, 0.0f, 1.0f } },
{ { 1.0f, 1.0f, 1.0f }, { 0.0f, 0.0f, 1.0f } },
{ { -1.0f, 1.0f, 1.0f }, { 0.0f, 0.0f, 1.0f } },
};
glGenBuffers(1, &gVertexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, gVertexBuffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(SimpleVertex) * 24,
vertices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(SimpleVertex), 0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(SimpleVertex), (void*)(sizeof(float)*3));
}