/*!****************************************************************************
@Function RenderScene
@Return bool true if no error occured
@Description Main rendering loop function of the program. The shell will
call this function every frame.
eglSwapBuffers() will be performed by PVRShell automatically.
PVRShell will also manage important OS events.
Will also manage relevent OS events. The user has access to
these events through an abstraction layer provided by PVRShell.
******************************************************************************/
bool OGLESParticles::RenderScene()
{
int i;
PVRTMat4 mRotY;
// Clear colour and depth buffers
myglClearColor(f2vt(0.0f), f2vt(0.0f), f2vt(0.0f), f2vt(1.0f));
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Enables depth testing
glEnable(GL_DEPTH_TEST);
// Modify per-frame variables controlling the particle mouvements.
float fSpeedCtrl = (float) (PVRTFSIN(m_fRot*0.01f)+1.0f)/2.0f;
float fStopNo = 0.8f;
float fStep = 0.1f;
if(fSpeedCtrl > fStopNo)
fStep = 0.0f;
// Generate particles as needed.
if((m_i32NumParticles < (int) g_ui32MaxParticles) && (fSpeedCtrl <= fStopNo))
{
int num_to_gen = (int) (RandPositiveFloat()*(g_ui32MaxParticles/100.0));
if(num_to_gen == 0)
num_to_gen = 1;
for(i = 0; (i < num_to_gen) && (m_i32NumParticles < (int) g_ui32MaxParticles); ++i)
SpawnParticle(&m_Particles[m_i32NumParticles++]);
}
// Build rotation matrix around axis Y.
mRotY = PVRTMat4::RotationY(f2vt((m_fRot2*PVRT_PIf)/180.0f));
for(i = 0; i < m_i32NumParticles; ++i)
{
// Transform particle with rotation matrix
m_sParticleVTXPSBuf[i].x = VERTTYPEMUL(mRotY.f[ 0], m_Particles[i].m_fPosition.x) +
VERTTYPEMUL(mRotY.f[ 4], m_Particles[i].m_fPosition.y) +
VERTTYPEMUL(mRotY.f[ 8], m_Particles[i].m_fPosition.z) +
mRotY.f[12];
m_sParticleVTXPSBuf[i].y = VERTTYPEMUL(mRotY.f[ 1], m_Particles[i].m_fPosition.x) +
VERTTYPEMUL(mRotY.f[ 5], m_Particles[i].m_fPosition.y) +
VERTTYPEMUL(mRotY.f[ 9], m_Particles[i].m_fPosition.z) +
mRotY.f[13];
m_sParticleVTXPSBuf[i].z = VERTTYPEMUL(mRotY.f[ 2], m_Particles[i].m_fPosition.x) +
VERTTYPEMUL(mRotY.f[ 6], m_Particles[i].m_fPosition.y) +
VERTTYPEMUL(mRotY.f[10], m_Particles[i].m_fPosition.z) +
mRotY.f[14];
m_sParticleVTXPSBuf[i].fSize = m_Particles[i].m_fSize;
m_sNormalColour[i].r = vt2b(m_Particles[i].m_fColour.x);
m_sNormalColour[i].g = vt2b(m_Particles[i].m_fColour.y);
m_sNormalColour[i].b = vt2b(m_Particles[i].m_fColour.z);
m_sNormalColour[i].a = (unsigned char)255;
m_sReflectColour[i].r = vt2b(VERTTYPEMUL(m_Particles[i].m_fColour.x, g_fFactor));
m_sReflectColour[i].g = vt2b(VERTTYPEMUL(m_Particles[i].m_fColour.y, g_fFactor));
m_sReflectColour[i].b = vt2b(VERTTYPEMUL(m_Particles[i].m_fColour.z, g_fFactor));
m_sReflectColour[i].a = (unsigned char)255;
}
glBindBuffer(GL_ARRAY_BUFFER, m_i32VertVboID);
glBufferData(GL_ARRAY_BUFFER, sizeof(SVtxPointSprite)*m_i32NumParticles, m_sParticleVTXPSBuf,GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, m_i32ColAVboID);
glBufferData(GL_ARRAY_BUFFER, sizeof(SColors)*m_i32NumParticles, m_sNormalColour,GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, m_i32ColBVboID);
glBufferData(GL_ARRAY_BUFFER, sizeof(SColors)*m_i32NumParticles, m_sReflectColour,GL_DYNAMIC_DRAW);
// clean up render states
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glEnable(GL_LIGHTING);
// Draw floor.
// Save modelview matrix
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
myglRotate(f2vt(-m_fRot), f2vt(0.0f), f2vt(1.0f), f2vt(0.0f));
// setup render states
glDisable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glDisable(GL_CULL_FACE);
glEnable(GL_BLEND);
// Set texture and texture environment
glBindTexture(GL_TEXTURE_2D, m_ui32FloorTexName);
glBlendFunc(GL_ONE, GL_ONE);
// Render floor
RenderFloor();
// clean up render states
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glEnable(GL_LIGHTING);
glPopMatrix();
// Render particles reflections.
// set up render states
glDisable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glDepthFunc(GL_ALWAYS);
glDisable(GL_CULL_FACE);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE);
myglTexEnv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glBindTexture(GL_TEXTURE_2D, m_ui32TexName);
// Set model view matrix
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
myglScale(f2vt(1.0f), f2vt(-1.0f), f2vt(1.0f));
myglTranslate(f2vt(0.0f), f2vt(0.01f), f2vt(0.0f));
glEnable(GL_POINT_SPRITE_OES);
if(((int)(m_i32NumParticles * 0.5f)) > 0)
RenderParticle(((int)(m_i32NumParticles*0.5f)),true);
glPopMatrix();
// Render particles.
// Sets the model view matrix
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
if(m_i32NumParticles > 0)
RenderParticle(m_i32NumParticles,false);
glPopMatrix();
glDisable(GL_POINT_SPRITE_OES);
PVRTVec3 Force = PVRTVec3(f2vt(0.0f), f2vt(0.0f), f2vt(0.0f));
Force.x = f2vt(1000.0f*(float)PVRTFSIN(m_fRot*0.01f));
for(i = 0; i < m_i32NumParticles; ++i)
{
/*
Move the particle.
If the particle exceeds its lifetime, create a new one in its place.
*/
if(m_Particles[i].Step(f2vt(fStep), Force))
SpawnParticle(&m_Particles[i]);
}
// clean up render states
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glEnable(GL_LIGHTING);
// Increase rotation angles
m_fRot += 1;
m_fRot2 = m_fRot + 36;
// Unbinds the vertex buffer if we are using OpenGL ES 1.1
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Display info text.
m_Print3D.DisplayDefaultTitle("Particles", "Using point sprites", ePVRTPrint3DSDKLogo);
m_Print3D.Flush();
return true;
}
/*******************************************************************************
* Function Name : RenderScene
* Returns : true if no error occured
* Description : Main rendering loop function of the program. The shell will
* call this function every frame.
*******************************************************************************/
bool OGLESVase::RenderScene()
{
PVRTMat4 RotationMatrix, RotateX, RotateY;
// Increase rotation angles
m_fAngleX += VERTTYPEDIV(PVRT_PI, f2vt(100.0f));
m_fAngleY += VERTTYPEDIV(PVRT_PI, f2vt(150.0f));
if(m_fAngleX >= PVRT_PI)
m_fAngleX -= PVRT_TWO_PI;
if(m_fAngleY >= PVRT_PI)
m_fAngleY -= PVRT_TWO_PI;
// Clear the buffers
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Setup the vase rotation
// Calculate rotation matrix
RotateX = PVRTMat4::RotationX(m_fAngleX);
RotateY = PVRTMat4::RotationY(m_fAngleY);
RotationMatrix = RotateY * RotateX;
// Modelview matrix
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
myglTranslate(f2vt(0.0f), f2vt(0.0f), f2vt(-200.0f));
myglMultMatrix(RotationMatrix.f);
// Draw the scene
// Use PVRTools to draw a background image
m_Background.Draw(m_uiBackTex);
// Enable client states
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
// Enable depth test
glEnable(GL_DEPTH_TEST);
// Draw vase outer
glBindTexture(GL_TEXTURE_2D, m_pui32Textures[m_Scene.pNode[eVase].nIdxMaterial]);
DrawReflectiveMesh(m_Scene.pNode[eVase].nIdx, &RotationMatrix);
// Draw glass
glEnable(GL_BLEND);
glBindTexture(GL_TEXTURE_2D, m_pui32Textures[m_Scene.pNode[eGlass].nIdxMaterial]);
// Pass 1: only render back faces (model has reverse winding)
glFrontFace(GL_CW);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
DrawMesh(m_Scene.pNode[eGlass].nIdx);
// Pass 2: only render front faces (model has reverse winding)
glCullFace(GL_FRONT);
DrawMesh(m_Scene.pNode[eGlass].nIdx);
// Disable blending as it isn't needed
glDisable(GL_BLEND);
// Disable client states
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
// Display info text
m_Print3D.DisplayDefaultTitle("Vase", "Translucency and reflections.", ePVRTPrint3DSDKLogo);
m_Print3D.Flush();
return true;
}
/*!****************************************************************************
@Function RenderScene
@Return bool true if no error occured
@Description Main rendering loop function of the program. The shell will
call this function every frame.
eglSwapBuffers() will be performed by PVRShell automatically.
PVRShell will also manage important OS events.
Will also manage relevent OS events. The user has access to
these events through an abstraction layer provided by PVRShell.
******************************************************************************/
bool OGLESEvilSkull::RenderScene()
{
unsigned int i;
float fCurrentfJawRotation, fCurrentfBackRotation;
float fFactor, fInvFactor;
// Update Skull Weights and Rotations using Animation Info
if(m_i32Frame > g_fExprTime)
{
m_i32Frame = 0;
m_i32BaseAnim = m_i32TargetAnim;
++m_i32TargetAnim;
if(m_i32TargetAnim > 6)
{
m_i32TargetAnim = 0;
}
}
fFactor = float(m_i32Frame) / g_fExprTime;
fInvFactor = 1.0f - fFactor;
m_fSkullWeights[0] = (m_fExprTable[0][m_i32BaseAnim] * fInvFactor) + (m_fExprTable[0][m_i32TargetAnim] * fFactor);
m_fSkullWeights[1] = (m_fExprTable[1][m_i32BaseAnim] * fInvFactor) + (m_fExprTable[1][m_i32TargetAnim] * fFactor);
m_fSkullWeights[2] = (m_fExprTable[2][m_i32BaseAnim] * fInvFactor) + (m_fExprTable[2][m_i32TargetAnim] * fFactor);
m_fSkullWeights[3] = (m_fExprTable[3][m_i32BaseAnim] * fInvFactor) + (m_fExprTable[3][m_i32TargetAnim] * fFactor);
fCurrentfJawRotation = m_fJawRotation[m_i32BaseAnim] * fInvFactor + (m_fJawRotation[m_i32TargetAnim] * fFactor);
fCurrentfBackRotation = m_fBackRotation[m_i32BaseAnim] * fInvFactor + (m_fBackRotation[m_i32TargetAnim] * fFactor);
// Update Base Animation Value - FrameBased Animation for now
++m_i32Frame;
// Update Skull Vertex Data using Animation Params
for(i = 0; i < m_Scene.pMesh[eSkull].nNumVertex * 3; ++i)
{
m_pMorphedVertices[i]= f2vt(m_pAVGVertices[i] + (m_pDiffVertices[0][i] * m_fSkullWeights[0]) \
+ (m_pDiffVertices[1][i] * m_fSkullWeights[1]) \
+ (m_pDiffVertices[2][i] * m_fSkullWeights[2]) \
+ (m_pDiffVertices[3][i] * m_fSkullWeights[3]));
}
// Buffer Clear
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Render Skull and Jaw Opaque with Lighting
glDisable(GL_BLEND); // Opaque = No Blending
glEnable(GL_LIGHTING); // Lighting On
// Set skull and jaw texture
glBindTexture(GL_TEXTURE_2D, m_ui32Texture[1]);
// Enable and set vertices, normals and index data
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
// Render Animated Jaw - Rotation Only
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
myglMultMatrix(m_mView.f);
myglTranslate(f2vt(0),f2vt(-50.0f),f2vt(-50.0f));
myglRotate(f2vt(-fCurrentfJawRotation), f2vt(1.0f), f2vt(0.0f), f2vt(0.0f));
myglRotate(f2vt(fCurrentfJawRotation) - f2vt(30.0f), f2vt(0), f2vt(1.0f), f2vt(-1.0f));
RenderJaw();
glPopMatrix();
// Render Morphed Skull
glPushMatrix();
myglRotate(f2vt(fCurrentfJawRotation) - f2vt(30.0f), f2vt(0), f2vt(1.0f), f2vt(-1.0f));
RenderSkull();
// Render Eyes and Background with Alpha Blending and No Lighting
glEnable(GL_BLEND); // Enable Alpha Blending
glDisable(GL_LIGHTING); // Disable Lighting
// Disable the normals as they aren't needed anymore
glDisableClientState(GL_NORMAL_ARRAY);
// Render Eyes using Skull Model Matrix
DrawQuad(-30.0f ,0.0f ,50.0f ,20.0f , m_ui32Texture[0]);
DrawQuad( 33.0f ,0.0f ,50.0f ,20.0f , m_ui32Texture[0]);
glPopMatrix();
// Render Dual Texture Background with different base color, rotation, and texture rotation
glPushMatrix();
glDisable(GL_BLEND); // Disable Alpha Blending
myglColor4(f2vt(0.7f+0.3f*((m_fSkullWeights[0]))), f2vt(0.7f), f2vt(0.7f), f2vt(1.0f)); // Animated Base Color
myglTranslate(f2vt(10.0f), f2vt(-50.0f), f2vt(0.0f));
myglRotate(f2vt(fCurrentfBackRotation*4.0f),f2vt(0),f2vt(0),f2vt(-1.0f)); // Rotation of Quad
// Animated Texture Matrix
glActiveTexture(GL_TEXTURE0);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
myglTranslate(f2vt(-0.5f), f2vt(-0.5f), f2vt(0.0f));
myglRotate(f2vt(fCurrentfBackRotation*-8.0f), f2vt(0), f2vt(0), f2vt(-1.0f));
myglTranslate(f2vt(-0.5f), f2vt(-0.5f), f2vt(0.0f));
// Draw Geometry
DrawDualTexQuad (0.0f ,0.0f ,-100.0f ,300.0f, m_ui32Texture[3], m_ui32Texture[2]);
// Disable Animated Texture Matrix
glActiveTexture(GL_TEXTURE0);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
// Make sure to disable the arrays
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
// Reset Colour
myglColor4(f2vt(1.0f), f2vt(1.0f), f2vt(1.0f), f2vt(1.0f));
// Display info text
m_Print3D.DisplayDefaultTitle("EvilSkull", "Morphing.", ePVRTPrint3DSDKLogo);
m_Print3D.Flush();
return true;
}
/*******************************************************************************
* Function Name : RenderScene
* Returns : true if no error occured
* Description : Main rendering loop function of the program. The shell will
* call this function every frame.
*******************************************************************************/
bool OGLESAntialiasedLines::RenderScene()
{
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
// set up render states
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, m_uiTexture);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
// translate to centre, animate rotation and scale
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
myglTranslate(f2vt(m_iWidth * 0.5f), f2vt(m_iHeight * 0.5f), f2vt(0));
unsigned long ulTime = PVRShellGetTime() % 36000;
myglRotate(f2vt(ulTime * 0.01f), f2vt(0), f2vt(0), f2vt(1));
float fScale = vt2f(PVRTSIN(VERTTYPEMUL(PVRT_PI, f2vt(ulTime / 9000.f)))) * 0.5f + 0.6f;
myglScale(f2vt(fScale), f2vt(fScale), f2vt(1));
if ((ulTime / 2250) & 1)
{
// render aliased lines
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, m_uiVbos[2]);
glVertexPointer(2, VERTTYPEENUM, sizeof(SVertex), (GLvoid*)offsetof(SVertex, vPosition));
glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(SVertex), (GLvoid*)offsetof(SVertex, uiColor));
glLineWidth(c_fLineWidth * fScale);
glDrawArrays(GL_LINES, 0, c_iNumLines * 2);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
m_Print3D.DisplayDefaultTitle("Antialiased Lines", "GL_LINES (aliased)", ePVRTPrint3DSDKLogo);
}
else
{
// Render antialiased lines with blending
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, m_uiVbos[0]);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_uiVbos[1]);
glVertexPointer(2, VERTTYPEENUM, sizeof(STexVertex), (GLvoid*)offsetof(STexVertex, vPosition));
glTexCoordPointer(2, VERTTYPEENUM, sizeof(STexVertex), (GLvoid*)offsetof(STexVertex, vTexcoord));
glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(STexVertex), (GLvoid*)offsetof(STexVertex, uiColor));
glDrawElements(GL_TRIANGLES, c_iNumLines * 18, GL_UNSIGNED_SHORT, 0);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glDisable(GL_BLEND);
m_Print3D.DisplayDefaultTitle("Antialiased Lines", "Textured rectangles (antialiased)", ePVRTPrint3DSDKLogo);
}
// Flush all Print3D commands
m_Print3D.Flush();
return true;
}
