void Game::DisplayFrameRate()
{
CShaderProgram *fontProgram = (*m_pShaderPrograms)[1];
RECT dimensions = m_gameWindow.GetDimensions();
int height = dimensions.bottom - dimensions.top;
// Increase the elapsed time and frame counter
m_elapsedTime += m_dt;
m_frameCount++;
// Now we want to subtract the current time by the last time that was stored
// to see if the time elapsed has been over a second, which means we found our FPS.
if (m_elapsedTime > 1000)
{
m_elapsedTime = 0;
m_framesPerSecond = m_frameCount;
// Reset the frames per second
m_frameCount = 0;
}
if (m_framesPerSecond > 0) {
// Use the font shader program and render the text
fontProgram->UseProgram();
glDisable(GL_DEPTH_TEST);
fontProgram->SetUniform("matrices.modelViewMatrix", glm::mat4(1));
fontProgram->SetUniform("matrices.projMatrix", m_pCamera->GetOrthographicProjectionMatrix());
fontProgram->SetUniform("vColour", glm::vec4(1.0f, 1.0f, 1.0f, 1.0f));
m_pFtFont->Render(20, height - 20, 20, "FPS: %d", m_framesPerSecond);
}
}
// Render method runs repeatedly in a loop
void Game::Render()
{
// Clear the buffers and enable depth testing (z-buffering)
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
// Set up a matrix stack
glutil::MatrixStack modelViewMatrixStack;
modelViewMatrixStack.SetIdentity();
modelViewMatrixStack.LookAt(m_pCamera->GetPosition(), m_pCamera->GetView(), m_pCamera->GetUpVector());
// Use the main shader program
CShaderProgram *pMainProgram = (*m_pShaderPrograms)[0];
pMainProgram->UseProgram();
// Set light and materials in main shader program
glm::vec4 vPosition(-100, 100, 50, 1);
glm::mat3 normalMatrix = m_pCamera->ComputeNormalMatrix(modelViewMatrixStack.Top());
glm::vec4 vLightEye = modelViewMatrixStack.Top()*vPosition;
pMainProgram->SetUniform("light1.position", vLightEye); // Position of light source in eye coordinates
pMainProgram->SetUniform("light1.La", glm::vec3(0.15f, 0.15f, 0.15f));
pMainProgram->SetUniform("light1.Ld", glm::vec3(1.0f, 1.0f, 1.0f));
pMainProgram->SetUniform("light1.Ls", glm::vec3(1.0f, 1.0f, 1.0f));
pMainProgram->SetUniform("material1.Ma", glm::vec3(0.5f, 0.5f, 0.5f));
pMainProgram->SetUniform("material1.Md", glm::vec3(0.5f, 0.5f, 0.5f));
pMainProgram->SetUniform("material1.Ms", glm::vec3(0.5f, 0.5f, 0.5f));
pMainProgram->SetUniform("material1.shininess", 15.0f);
pMainProgram->SetUniform("bUseTexture", false);
pMainProgram->SetUniform("sampler0", 0);
// Render the grid
modelViewMatrixStack.Push();
pMainProgram->SetUniform("matrices.projMatrix", m_pCamera->GetPerspectiveProjectionMatrix());
pMainProgram->SetUniform("matrices.modelViewMatrix", modelViewMatrixStack.Top());
pMainProgram->SetUniform("matrices.normalMatrix", m_pCamera->ComputeNormalMatrix(modelViewMatrixStack.Top()));
m_pGrid->Render();
modelViewMatrixStack.Pop();
// Switch to the sphere program
CShaderProgram *pSphereProgram = (*m_pShaderPrograms)[2];
pSphereProgram->UseProgram();
// Set light and materials in sphere programme
pSphereProgram->SetUniform("material1.Ma", glm::vec3(0.0f, 1.0f, 0.0f));
pSphereProgram->SetUniform("material1.Md", glm::vec3(0.0f, 1.0f, 0.0f));
pSphereProgram->SetUniform("material1.Ms", glm::vec3(1.0f, 1.0f, 1.0f));
pSphereProgram->SetUniform("material1.shininess", 50.0f);
pSphereProgram->SetUniform("light1.La", glm::vec3(0.15f, 0.15f, 0.15f));
pSphereProgram->SetUniform("light1.Ld", glm::vec3(1.0f, 1.0f, 1.0f));
pSphereProgram->SetUniform("light1.Ls", glm::vec3(1.0f, 1.0f, 1.0f));
pSphereProgram->SetUniform("light1.position", vLightEye);
// Render the sphere
modelViewMatrixStack.Push();
modelViewMatrixStack.Translate(glm::vec3(0.0f, 5.0f, 50.0f));
modelViewMatrixStack.Scale(5.0f);
pSphereProgram->SetUniform("matrices.projMatrix", m_pCamera->GetPerspectiveProjectionMatrix());
pSphereProgram->SetUniform("matrices.modelViewMatrix", modelViewMatrixStack.Top());
pSphereProgram->SetUniform("matrices.normalMatrix", m_pCamera->ComputeNormalMatrix(modelViewMatrixStack.Top()));
pSphereProgram->SetUniform("t",m_elapsedTime);
pSphereProgram->SetUniform("levels",m_levels);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
m_pSphere->Render();
modelViewMatrixStack.Pop();
#ifdef __WIN32
void swapBuffers();
#endif
#ifdef __APPLE__
glSwapAPPLE();
#endif
}
// Initializes OpenGL features that will be used.
// lpParam - Pointer to anything you want.
void InitScene(LPVOID lpParam)
{
//glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
//Новый цвет фона
glClearColor(0.0f, 0.5f, 1.0f, 1.0f);
// Setup triangle vertices
fTriangle[0] = -0.9f; fTriangle[1] = 0.7f; fTriangle[2] = 0.0f;
fTriangle[3] = -0.7f; fTriangle[4] = 0.9f; fTriangle[5] = 0.0f;
fTriangle[6] = -0.5f; fTriangle[7] = 0.7f; fTriangle[8] = 0.0f;
// Setup triangle color
fTriangleColor[0] = 1.0f; fTriangleColor[1] = 0.0f; fTriangleColor[2] = 0.0f;
fTriangleColor[3] = 0.0f; fTriangleColor[4] = 1.0f; fTriangleColor[5] = 0.0f;
fTriangleColor[6] = 0.0f; fTriangleColor[7] = 0.0f; fTriangleColor[8] = 1.0f;
// Setup quad vertices
fQuad[0] = 0.7f; fQuad[1] = 0.9f; fQuad[2] = 0.0f;
fQuad[3] = 0.7f; fQuad[4] = 0.6f; fQuad[5] = 0.0f;
fQuad[6] = 0.9f; fQuad[7] = 0.9f; fQuad[8] = 0.0f;
fQuad[9] = 0.9f; fQuad[10] = 0.6f; fQuad[11] = 0.0f;
// Setup quad color
fQuadColor[0] = 1.0f; fQuadColor[1] = 0.0f; fQuadColor[2] = 0.0f;
fQuadColor[3] = 0.0f; fQuadColor[4] = 1.0f; fQuadColor[8] = 0.0f;
fQuadColor[6] = 0.0f; fQuadColor[7] = 0.0f; fQuadColor[5] = 1.0f;
fQuadColor[9] = 1.0f; fQuadColor[10] = 1.0f; fQuadColor[11] = 0.0f;
// Setup duck vertices
fDuck[0] = 0.0f; fDuck[1] = 0.8f; fDuck[2] = 0.0f;
fDuck[3] = -0.2f; fDuck[4] = 0.4f; fDuck[5] = 0.0f;
fDuck[6] = -0.2f; fDuck[7] = -0.3f; fDuck[8] = 0.0f;
fDuck[9] = -0.3f; fDuck[10] = -0.5f; fDuck[11] = 0.0f;
fDuck[12] = -0.3f; fDuck[13] = -0.9f; fDuck[14] = 0.0f;
fDuck[15] = -0.2f; fDuck[16] = -0.9f; fDuck[17] = 0.0f;
fDuck[18] = -0.2f; fDuck[19] = -0.7f; fDuck[20] = 0.0f;
fDuck[21] = -0.05f; fDuck[22] = -0.7f; fDuck[23] = 0.0f;
fDuck[24] = -0.05f; fDuck[25] = -0.9f; fDuck[26] = 0.0f;
fDuck[27] = 0.05f; fDuck[28] = -0.9f; fDuck[29] = 0.0f;
fDuck[30] = 0.05f; fDuck[31] = -0.7f; fDuck[32] = 0.0f;
fDuck[33] = 0.2f; fDuck[34] = -0.7f; fDuck[35] = 0.0f;
fDuck[36] = 0.2f; fDuck[37] = -0.9f; fDuck[38] = 0.0f;
fDuck[39] = 0.3f; fDuck[40] = -0.9f; fDuck[41] = 0.0f;
fDuck[42] = 0.3f; fDuck[43] = -0.5f; fDuck[44] = 0.0f;
fDuck[45] = 0.2f; fDuck[46] = -0.3f; fDuck[47] = 0.0f;
fDuck[48] = 0.2f; fDuck[49] = 0.4f; fDuck[50] = 0.0f;
fDuck[51] = 0.0f; fDuck[52] = 0.8f; fDuck[53] = 0.0f;
// Setup duck color
fDuckColor[0] = 1.0f; fDuckColor[1] = 0.0f; fDuckColor[2] = 0.0f;
fDuckColor[3] = 1.0f; fDuckColor[4] = 1.0f; fDuckColor[5] = 0.0f;
fDuckColor[6] = 1.0f; fDuckColor[7] = 0.0f; fDuckColor[8] = 1.0f;
fDuckColor[9] = 1.0f; fDuckColor[10] = 0.0f; fDuckColor[11] = 0.0f;
fDuckColor[12] = 1.0f; fDuckColor[13] = 1.0f; fDuckColor[14] = 0.0f;
fDuckColor[15] = 1.0f; fDuckColor[16] = 0.0f; fDuckColor[17] = 1.0f;
fDuckColor[18] = 1.0f; fDuckColor[19] = 0.0f; fDuckColor[20] = 0.0f;
fDuckColor[21] = 1.0f; fDuckColor[22] = 1.0f; fDuckColor[23] = 0.0f;
fDuckColor[24] = 1.0f; fDuckColor[25] = 0.0f; fDuckColor[26] = 1.0f;
fDuckColor[27] = 1.0f; fDuckColor[28] = 0.0f; fDuckColor[29] = 0.0f;
fDuckColor[30] = 1.0f; fDuckColor[31] = 1.0f; fDuckColor[32] = 0.0f;
fDuckColor[33] = 0.2f; fDuckColor[34] = -0.7f; fDuckColor[35] = 0.0f;
fDuckColor[36] = 0.2f; fDuckColor[37] = -0.9f; fDuckColor[38] = 0.0f;
fDuckColor[39] = 0.3f; fDuckColor[40] = -0.9f; fDuckColor[41] = 0.0f;
fDuckColor[42] = 0.3f; fDuckColor[43] = -0.5f; fDuckColor[44] = 0.0f;
fDuckColor[45] = 0.2f; fDuckColor[46] = -0.3f; fDuckColor[47] = 0.0f;
fDuckColor[48] = 0.2f; fDuckColor[49] = -0.3f; fDuckColor[50] = 0.0f;
fDuckColor[51] = 1.0f; fDuckColor[52] = 0.0f; fDuckColor[53] = 0.0f;
// Setup duck vertices
fMore[0] = 0.0f; fMore[1] = 0.0f; fMore[2] = 0.0f;
fMore[3] = 0.5f; fMore[4] = 0.0f; fMore[5] = 0.0f;
fMore[6] = 0.5f; fMore[7] = 0.5f; fMore[8] = 0.0f;
fMore[9] = 0.0f; fMore[10] = 0.0f; fMore[11] = 0.0f;
fMore[12] = 0.0f; fMore[13] = 0.5f; fMore[14] = 0.0f;
fMore[15] = -0.5f; fMore[16] = 0.5f; fMore[17] = 0.0f;
fMore[18] = 0.0f; fMore[19] = 0.0f; fMore[20] = 0.0f;
fMore[21] = -0.5f; fMore[22] = 0.0f; fMore[23] = 0.0f;
fMore[24] = -0.5f; fMore[25] = -0.5f; fMore[26] = 0.0f;
fMore[27] = 0.0f; fMore[28] = 0.0f; fMore[29] = 0.0f;
fMore[30] = 0.0f; fMore[31] = -0.5f; fMore[32] = 0.0f;
fMore[33] = 0.5f; fMore[34] = -0.5f; fMore[35] = 0.0f;
for (int i = 0; i < 36; i++) {
fMore[i] = fMore[i] * 0.4 - 0.6f;
}
// Setup duck color
fMoreColor[0] = 1.0f; fMoreColor[1] = 1.0f; fMoreColor[2] = 1.0f;
fMoreColor[3] = 1.0f; fMoreColor[4] = 1.0f; fMoreColor[5] = 1.0f;
fMoreColor[6] = 1.0f; fMoreColor[7] = 1.0f; fMoreColor[8] = 1.0f;
fMoreColor[9] = 1.0f; fMoreColor[10] = 0.0f; fMoreColor[11] = 0.0f;
fMoreColor[12] = 1.0f; fMoreColor[13] = 1.0f; fMoreColor[14] = 0.0f;
fMoreColor[15] = 1.0f; fMoreColor[16] = 0.0f; fMoreColor[17] = 1.0f;
fMoreColor[18] = 1.0f; fMoreColor[19] = 1.0f; fMoreColor[20] = 1.0f;
fMoreColor[21] = 1.0f; fMoreColor[22] = 1.0f; fMoreColor[23] = 1.0f;
fMoreColor[24] = 1.0f; fMoreColor[25] = 1.0f; fMoreColor[26] = 1.0f;
fMoreColor[27] = 1.0f; fMoreColor[28] = 0.0f; fMoreColor[29] = 0.0f;
fMoreColor[30] = 1.0f; fMoreColor[31] = 1.0f; fMoreColor[32] = 0.0f;
fMoreColor[33] = 0.2f; fMoreColor[34] = -0.7f; fMoreColor[35] = 0.0f;
glGenVertexArrays(4, uiVAO); // Generate two VAOs, one for triangle and one for quad
glGenBuffers(8, uiVBO); // And four VBOs
// Setup whole triangle
glBindVertexArray(uiVAO[0]);
glBindBuffer(GL_ARRAY_BUFFER, uiVBO[0]);
glBufferData(GL_ARRAY_BUFFER, 9*sizeof(float), fTriangle, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glBindBuffer(GL_ARRAY_BUFFER, uiVBO[1]);
glBufferData(GL_ARRAY_BUFFER, 9*sizeof(float), fTriangleColor, GL_STATIC_DRAW);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, 0);
// Setup whole quad
glBindVertexArray(uiVAO[1]);
glBindBuffer(GL_ARRAY_BUFFER, uiVBO[2]);
glBufferData(GL_ARRAY_BUFFER, 12*sizeof(float), fQuad, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glBindBuffer(GL_ARRAY_BUFFER, uiVBO[3]);
glBufferData(GL_ARRAY_BUFFER, 12*sizeof(float), fQuadColor, GL_STATIC_DRAW);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, 0);
// Setup whole quad
glBindVertexArray(uiVAO[2]);
glBindBuffer(GL_ARRAY_BUFFER, uiVBO[4]);
glBufferData(GL_ARRAY_BUFFER, 54 * sizeof(float), fDuck, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glBindBuffer(GL_ARRAY_BUFFER, uiVBO[5]);
glBufferData(GL_ARRAY_BUFFER, 54 * sizeof(float), fDuckColor, GL_STATIC_DRAW);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, 0);
// Setup whole quad
glBindVertexArray(uiVAO[3]);
glBindBuffer(GL_ARRAY_BUFFER, uiVBO[6]);
glBufferData(GL_ARRAY_BUFFER, 36 * sizeof(float), fMore, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glBindBuffer(GL_ARRAY_BUFFER, uiVBO[7]);
glBufferData(GL_ARRAY_BUFFER, 36 * sizeof(float), fMoreColor, GL_STATIC_DRAW);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, 0);
// Load shaders and create shader program
shVertex.LoadShader("data\\shaders\\shader.vert", GL_VERTEX_SHADER);
shFragment.LoadShader("data\\shaders\\shader.frag", GL_FRAGMENT_SHADER);
spMain.CreateProgram();
spMain.AddShaderToProgram(&shVertex);
spMain.AddShaderToProgram(&shFragment);
spMain.LinkProgram();
spMain.UseProgram();
}
void CSDLOpenGLWindow::RenderScene()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glm::mat4 mModelView = cCamera.look();
glm::mat4 mCurrent = mModelView;
// First render textured objects
glEnable(GL_TEXTURE_2D);
spTextured.UseProgram();
glBindVertexArray(uiVAOs[0]);
spTextured.SetUniform("projectionMatrix", GetProjectionMatrix());
spTextured.SetUniform("modelViewMatrix", mModelView);
spTextured.SetUniform("vColor", glm::vec4(1, 1, 1, 1));
// Render ground
tBlueIce.BindTexture();
glDrawArrays(GL_TRIANGLES, 36, 6);
// Render 5 opaque boxes
tBox.BindTexture();
for (int i = 0; i < 5; i++)
{
float fSign = -1.0f + float(i % 2)*2.0f; // This just returns -1.0f or 1.0f (try to examine this)
glm::vec3 vPos = glm::vec3(fSign*15.0f, 0.0f, 50.0f - float(i)*25.0f);
mCurrent = glm::translate(mModelView, vPos);
mCurrent = glm::scale(mCurrent, glm::vec3(8.0f, 8.0f, 8.0f));
mCurrent = glm::rotate(mCurrent, fGlobalAngle + float(i)*50.0f* PIover180, glm::vec3(0.0f, 1.0f, 0.0f));
spTextured.SetUniform("modelViewMatrix", mCurrent);
glDrawArrays(GL_TRIANGLES, 0, 36);
}
// Now switch to only colored rendering
glDisable(GL_TEXTURE_2D);
spColored.UseProgram();
glBindVertexArray(uiVAOs[1]);
spColored.SetUniform("projectionMatrix", GetProjectionMatrix());
// Render 5 transparent boxes
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDepthMask(0); // Disable writing to depth buffer
for (int i = 0; i < 5; i++)
{
float fSign = 1.0f - float(i % 2)*2.0f; // Same case as before - -1.0f or 1.0f
glm::vec3 vPos = glm::vec3(fSign*15.0f, 0.0f, 50.0f - float(i)*25.0f);
mCurrent = glm::translate(mModelView, vPos);
mCurrent = glm::scale(mCurrent, glm::vec3(8.0f, 8.0f, 8.0f));
mCurrent = glm::rotate(mCurrent, fGlobalAngle*0.8f + i*30.0f*PIover180, glm::vec3(1.0f, 0.0f, 0.0f)); // Just a variation of first rotating
spColored.SetUniform("modelViewMatrix", mCurrent);
spColored.SetUniform("vColor", vBoxColors[i]);
glDrawArrays(GL_TRIANGLES, 0, 36);
}
glDisable(GL_BLEND);
glDepthMask(1); // Re-enable writing to depth buffer
fGlobalAngle += sof(100.0f*PIover180);
cCamera.Update(this);
}
void CSDLOpenGLWindow::RenderScene()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
spDirectionalLight.UseProgram();
glBindVertexArray(uiVAOs[0]);
// Set light properties
float fSine = sin(fSunAngle*PIover180);
glm::vec3 vSunPos(cos(fSunAngle*PIover180) * 70, sin(fSunAngle*PIover180) * 70, 0.0);
// We'll change color of skies depending on sun's position
glClearColor(0.0f, std::max(0.0f, 0.9f*fSine), std::max(0.0f, 0.9f*fSine), 1.0f);
spDirectionalLight.SetUniform("sunLight.vColor", glm::vec3(1.0f, 1.0f, 1.0f));
spDirectionalLight.SetUniform("sunLight.fAmbientIntensity", 0.25f);
spDirectionalLight.SetUniform("sunLight.fStrength", 1.0f);
spDirectionalLight.SetUniform("sunLight.vDirection", -glm::normalize(vSunPos));
spDirectionalLight.SetUniform("projectionMatrix", GetProjectionMatrix());
glm::mat4 mView = cCamera.look();
glm::mat4 mModel(1.0);
spDirectionalLight.SetUniform("gSampler", 0);
spDirectionalLight.SetUniform("modelViewMatrix", mView*mModel);
spDirectionalLight.SetUniform("normalMatrix", glm::transpose(glm::inverse(glm::mat3(mModel))));
spDirectionalLight.SetUniform("vColor", glm::vec4(1.0f, 1.0f, 1.0f, 1.0f));
// Render ground
tTextures[0].BindTexture();
glDrawArrays(GL_TRIANGLES, 36, 6);
tTextures[1].BindTexture();
for (int i = 0; i < 5; i++)
{
float fSign = -1.0f + float(i % 2)*2.0f; // This just returns -1.0f or 1.0f (try to examine this)
glm::vec3 vPos = glm::vec3(fSign*15.0f, 0.0f, 50.0f - float(i)*25.0f);
mModel = glm::translate(glm::mat4(1.0), vPos);
mModel = glm::scale(mModel, glm::vec3(8.0f, 8.0f, 8.0f));
// We need to trasnsform normals properly, it's done by transpose of inverse matrix of rotations and scales
spDirectionalLight.SetUniform("normalMatrix", glm::transpose(glm::inverse(glm::mat3(mModel))));
spDirectionalLight.SetUniform("modelViewMatrix", mView*mModel);
glDrawArrays(GL_TRIANGLES, 0, 36);
}
// Render 5 tori (plural of torus :D)
tTextures[2].BindTexture();
for (int i = 0; i < 5; i++)
{
float fSign = 1.0f - float(i % 2)*2.0f; // This just returns -1.0f or 1.0f (try to examine this)
glm::vec3 vPos = glm::vec3(fSign*15.0f, 0.0f, 50.0f - float(i)*25.0f);
mModel = glm::translate(glm::mat4(1.0), vPos);
mModel = glm::rotate(mModel, fGlobalAngle + i*30.0f, glm::vec3(0.0f, 1.0f, 0.0f));
spDirectionalLight.SetUniform("normalMatrix", glm::transpose(glm::inverse(glm::mat3(mModel))));
spDirectionalLight.SetUniform("modelViewMatrix", mView*mModel);
glDrawArrays(GL_TRIANGLES, 42, iTorusFaces1 * 3);
}
tTextures[3].BindTexture();
// Render "sun" :D
mModel = glm::translate(glm::mat4(1.0), vSunPos);
spDirectionalLight.SetUniform("modelViewMatrix", mView*mModel);
spDirectionalLight.SetUniform("normalMatrix", glm::transpose(glm::inverse(glm::mat3(mModel))));
// It must shine
spDirectionalLight.SetUniform("sunLight.fAmbientIntensity", 0.8f);
glDrawArrays(GL_TRIANGLES, 42 + iTorusFaces1 * 3, iTorusFaces2 * 3);
fGlobalAngle += sof(100.0f*PIover180);
cCamera.Update(this);
if (Keys::Key(SDL_SCANCODE_LEFT))fSunAngle -= sof(45.0f);
if (Keys::Key(SDL_SCANCODE_RIGHT))fSunAngle += sof(45.0f);
}
// Render method runs repeatedly in a loop
void Game::Render()
{
// Clear the buffers and enable depth testing (z-buffering)
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
// Set up a matrix stack
glutil::MatrixStack modelViewMatrixStack;
modelViewMatrixStack.SetIdentity();
// Use the main shader program
CShaderProgram *pMainProgram = (*m_pShaderPrograms)[0];
pMainProgram->UseProgram();
pMainProgram->SetUniform("bUseTexture", false);
pMainProgram->SetUniform("sampler0", 0);
pMainProgram->SetUniform("CubeMapTex", 1);
// Set the projection matrix
pMainProgram->SetUniform("matrices.projMatrix", m_pCamera->GetPerspectiveProjectionMatrix());
// Call LookAt to create the view matrix and put this on the modelViewMatrix stack.
// Store the view matrix and the normal matrix associated with the view matrix for later (they're useful for lighting -- since lighting is done in eye coordinates)
modelViewMatrixStack.LookAt(m_pCamera->GetPosition(), m_pCamera->GetView(), m_pCamera->GetUpVector());
glm::mat4 viewMatrix = modelViewMatrixStack.Top();
glm::mat3 viewNormalMatrix = m_pCamera->ComputeNormalMatrix(viewMatrix);
// Set light and materials in main shader program
glm::vec4 lightPosition1 = glm::vec4(-100, 100, 50, 1); // Position of light source *in world coordinates*
pMainProgram->SetUniform("light1.position", viewMatrix*lightPosition1); // Position of light source *in eye coordinates*
pMainProgram->SetUniform("light1.La", glm::vec3(0.15f)); // Ambient colour of light
pMainProgram->SetUniform("light1.Ld", glm::vec3(1.0f)); // Diffuse colour of light
pMainProgram->SetUniform("light1.Ls", glm::vec3(1.0f)); // Specular colour of light
pMainProgram->SetUniform("material1.Ma", glm::vec3(0.5f)); // Ambient material reflectance
pMainProgram->SetUniform("material1.Md", glm::vec3(0.5f)); // Diffuse material reflectance
pMainProgram->SetUniform("material1.Ms", glm::vec3(0.5f)); // Specular material reflectance
pMainProgram->SetUniform("material1.shininess", 15.0f); // Shininess material property
// Render the grid
modelViewMatrixStack.Push(); {
pMainProgram->SetUniform("matrices.modelViewMatrix", modelViewMatrixStack.Top());
pMainProgram->SetUniform("matrices.normalMatrix", m_pCamera->ComputeNormalMatrix(modelViewMatrixStack.Top()));
m_pGrid->Render();
} modelViewMatrixStack.Pop();
// Switch to the sphere program
CShaderProgram *pSphereProgram = (*m_pShaderPrograms)[2];
pSphereProgram->UseProgram();
// Set light and materials in sphere programme
pSphereProgram->SetUniform("material1.Ma", glm::vec3(0.0f, 1.0f, 0.0f));
pSphereProgram->SetUniform("material1.Md", glm::vec3(0.0f, 1.0f, 0.0f));
pSphereProgram->SetUniform("material1.Ms", glm::vec3(1.0f, 1.0f, 1.0f));
pSphereProgram->SetUniform("material1.shininess", 50.0f);
pSphereProgram->SetUniform("light1.La", glm::vec3(0.15f, 0.15f, 0.15f));
pSphereProgram->SetUniform("light1.Ld", glm::vec3(1.0f, 1.0f, 1.0f));
pSphereProgram->SetUniform("light1.Ls", glm::vec3(1.0f, 1.0f, 1.0f));
pSphereProgram->SetUniform("light1.position", viewMatrix*lightPosition1);
pSphereProgram->SetUniform("t", m_t);
pSphereProgram->SetUniform("iLevel", m_levels);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Render the sphere
modelViewMatrixStack.Push(); {
modelViewMatrixStack.Translate(glm::vec3(0.0f, 5.0f, 50.0f));
modelViewMatrixStack.Scale(5.0f);
pSphereProgram->SetUniform("matrices.projMatrix", m_pCamera->GetPerspectiveProjectionMatrix());
pSphereProgram->SetUniform("matrices.modelViewMatrix", modelViewMatrixStack.Top());
pSphereProgram->SetUniform("matrices.normalMatrix", m_pCamera->ComputeNormalMatrix(modelViewMatrixStack.Top()));
m_pSphere->Render();
} modelViewMatrixStack.Pop();
// Draw the 2D graphics after the 3D graphics
DisplayFrameRate();
// Swap buffers to show the rendered image
SwapBuffers(m_gameWindow.Hdc());
}