/**
* This function does any needed initialization on the rendering context.
* This is the first opportunity to do any OpenGL related tasks.
*/
void SetupRC()
{
// Blue background
glClearColor(0.0f, 0.0f, 1.0f, 1.0f );
shaderManager.init();
// Load texure
glGenTextures(TEXTURE_COUNT, arrTextures);
for (int i = 0; i < TEXTURE_COUNT; i++) {
GLint iWidth, iHeight, iComponents;
GLenum eFormat;
// Bind to next texture object
glBindTexture(GL_TEXTURE_2D, arrTextures[i]);
// Load texture
GLbyte* pBytes = gltReadTGABits(szTextureFiles[i], &iWidth, &iHeight, &iComponents, &eFormat);
// set filter and wrap modes
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, iComponents, iWidth, iHeight, 0, eFormat, GL_UNSIGNED_BYTE,
pBytes);
glGenerateMipmap(GL_TEXTURE_2D);
// Don't need original texure data any more
free(pBytes);
}
// Build Geometry
floorBatch.begin(GL_TRIANGLE_STRIP, 28, 1);
for(GLfloat i = 60.0f; i >= 0.0f; i -= 10.0f) {
floorBatch.MultiTexCoord2f(0, 0.0f, 0.0f);
floorBatch.Vertex3f(-10.0f, -10.0f, i);
floorBatch.MultiTexCoord2f(0, 1.0f, 0.0f);
floorBatch.Vertex3f(10.0f, -10.0f, i);
floorBatch.MultiTexCoord2f(0, 0.0f, 1.0f);
floorBatch.Vertex3f(-10.0f, -10.0f, i - 10.0f);
floorBatch.MultiTexCoord2f(0, 1.0f, 1.0f);
floorBatch.Vertex3f(10.0f, -10.0f, i - 10.0f);
}
floorBatch.end();
ceilingBatch.begin(GL_TRIANGLE_STRIP, 28, 1);
for ( GLfloat i = 60.0f; i >= 0.0f; i -=10.0f) {
ceilingBatch.MultiTexCoord2f(0, 0.0f, 1.0f);
ceilingBatch.Vertex3f(-10.0f, 10.0f, i - 10.0f);
///////////////////////////////////////////////////////////////////////////////////////////////////////
// Create a matrix that maps geometry to the screen. 1 unit in the x direction equals one pixel
// of width, same with the y direction.
// It also depends on the size of the texture being displayed
void GenerateOrtho2DMat(GLuint windowWidth, GLuint windowHeight, GLuint imageWidth, GLuint imageHeight)
{
float right = (float)windowWidth;
float quadWidth = right;
float left = 0.0f;
float top = (float)windowHeight;
float quadHeight = top;
float bottom = 0.0f;
float screenAspect = (float)windowWidth / windowHeight;
float imageAspect = (float)imageWidth / imageHeight;
if (screenAspect > imageAspect)
quadWidth = windowHeight*imageAspect;
else
quadHeight = windowWidth*imageAspect;
// set ortho matrix
orthoMatrix[0] = (float)(2 / (right - left));
orthoMatrix[1] = 0.0;
orthoMatrix[2] = 0.0;
orthoMatrix[3] = 0.0;
orthoMatrix[4] = 0.0;
orthoMatrix[5] = (float)(2 / (top - bottom));
orthoMatrix[6] = 0.0;
orthoMatrix[7] = 0.0;
orthoMatrix[8] = 0.0;
orthoMatrix[9] = 0.0;
orthoMatrix[10] = (float)(-2 / (1.0 - 0.0));
orthoMatrix[11] = 0.0;
orthoMatrix[12] = -1 * (right + left) / (right - left);
orthoMatrix[13] = -1 * (top + bottom) / (top - bottom);
orthoMatrix[14] = -1.0f;
orthoMatrix[15] = 1.0;
// set screen quad vertex array
screenQuad.Reset();
screenQuad.begin(GL_TRIANGLE_STRIP, 4, 1);
screenQuad.Color4f(0.0f, 1.0f, 0.0f, 1.0f);
screenQuad.MultiTexCoord2f(0, 0.0f, 0.0f);
screenQuad.Vertex3f(0.0f, 0.0f, 0.0f);
screenQuad.Color4f(0.0f, 1.0f, 0.0f, 1.0f);
screenQuad.MultiTexCoord2f(0, 1.0f, 0.0f);
screenQuad.Vertex3f(quadWidth, 0.0f, 0.0f);
screenQuad.Color4f(0.0f, 1.0f, 0.0f, 1.0f);
screenQuad.MultiTexCoord2f(0, 0.0f, 1.0f);
screenQuad.Vertex3f(0.0f, quadHeight, 0.0f);
screenQuad.Color4f(0.0f, 1.0f, 0.0f, 1.0f);
screenQuad.MultiTexCoord2f(0, 1.0f, 1.0f);
screenQuad.Vertex3f(quadWidth, quadHeight, 0.0f);
screenQuad.end();
}
//////////////////////////////////////////////////////////////////////////////////////////////////////
// Create a matrix that maps geometry to the screen. 1 unit in the x directionequals one pixel
// of width, same with the y direction.
//
void GenerateOrtho2DMat(GLuint imageWidth, GLuint imageHeight)
{
float right = (float)imageWidth;
float quadWidth = right;
float left = 0.0f;
float top = (float)imageHeight;
float quadHeight = top;
float bottom = 0.0f;
// set ortho matrix
orthoMatrix[0] = (float)(2 / (right));
orthoMatrix[1] = 0.0;
orthoMatrix[2] = 0.0;
orthoMatrix[3] = 0.0;
orthoMatrix[4] = 0.0;
orthoMatrix[5] = (float)(2 / (top));
orthoMatrix[6] = 0.0;
orthoMatrix[7] = 0.0;
orthoMatrix[8] = 0.0;
orthoMatrix[9] = 0.0;
orthoMatrix[10] = (float)(-2 / (1.0 - 0.0));
orthoMatrix[11] = 0.0;
orthoMatrix[12] = -1.0f;
orthoMatrix[13] = -1.0f;
orthoMatrix[14] = -1.0f;
orthoMatrix[15] = 1.0;
// set screen quad vertex array
screenQuad.Reset();
screenQuad.begin(GL_TRIANGLE_STRIP, 4, 1);
screenQuad.Color4f(0.0f, 1.0f, 0.0f, 1.0f);
screenQuad.MultiTexCoord2f(0, 0.0f, 0.0f);
screenQuad.Vertex3f(0.0f, 0.0f, 0.0f);
screenQuad.Color4f(0.0f, 1.0f, 0.0f, 1.0f);
screenQuad.MultiTexCoord2f(0, 1.0f, 0.0f);
screenQuad.Vertex3f(right, 0.0f, 0.0f);
screenQuad.Color4f(0.0f, 1.0f, 0.0f, 1.0f);
screenQuad.MultiTexCoord2f(0, 0.0f, 1.0f);
screenQuad.Vertex3f(0.0f, top, 0.0f);
screenQuad.Color4f(0.0f, 1.0f, 0.0f, 1.0f);
screenQuad.MultiTexCoord2f(0, 1.0f, 1.0f);
screenQuad.Vertex3f(right, top, 0.0f);
screenQuad.end();
}
/**
* This function does any needed initialization on the rendering context.
* This is the first opportunity to do any OpenGL related tasks.
*/
void SetupRC()
{
// Blue background
glClearColor(0.0f, 0.0f, 1.0f, 1.0f );
shaderManager.init();
// load up a triangle
GLfloat vVerts[] = {
-0.5f, 0.0f, 0.0f,
0.5f, 0.0f, 0.0f,
0.0f, 0.5f, 0.0f
};
GLfloat vTexCoords[] = {
0.0f, 0.0f,
1.0f, 0.0f,
0.5f, 1.0f
};
triangleBatch.begin(GL_TRIANGLES, 3, 1);
triangleBatch.CopyVertexData3f(vVerts);
triangleBatch.CopyTexCoordData2f(vTexCoords, 0);
triangleBatch.end();
myTexturedIdentityShader = gltLoadShaderWithFileEx("TextureIndentity.vp",
"TextureIndentity.fp",
2,
GLT_ATTRIBUTE_VERTEX, "vVertex",
GLT_ATTRIBUTE_TEXTURE0, "vTexCoords");
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
gltLoadTextureTGA("stone.tga", GL_LINEAR, GL_LINEAR, GL_CLAMP_TO_EDGE);
}
/**
* This function does any needed initialization on the rendering context.
* This is the first opportunity to do any OpenGL related tasks.
*/
void SetupRC()
{
// make sure opengl entry points are set
glewInit();
// Blue background
glClearColor(0.0f, 0.0f, 0.0f, 1.0f );
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
shaderManager.init();
gltCreateTorus(torusBatch, 0.4f, 0.15f, 40, 20);
gltCreateSphere(sphereBatch, 0.1f, 26, 13);
// make the solid ground
GLfloat texSize = 10.0f;
floorBatch.begin(GL_TRIANGLE_FAN, 4, 1);
floorBatch.MultiTexCoord2f(0, 0.0f, 0.0f);
floorBatch.Vertex3f(-20.0f, -0.41f, 20.0f);
floorBatch.MultiTexCoord2f(0, texSize, 0.0f);
floorBatch.Vertex3f(20.0f, -0.41f, 20.0f);
floorBatch.MultiTexCoord2f(0, texSize, texSize);
floorBatch.Vertex3f(20.0f, -0.41f, -20.0f);
floorBatch.MultiTexCoord2f(0, 0.0f, texSize);
floorBatch.Vertex3f(-20.0f, -0.41f, -20.0f);
floorBatch.end();
// draw the opengl logo
int x = 500;
int y = 155;
int width = 300;
int height = 155;
logoBatch.begin(GL_TRIANGLE_FAN, 4, 1);
// Upper left hand corner
logoBatch.MultiTexCoord2f(0, 0.0f, height);
logoBatch.Vertex3f(x, y, 0.0);
// Lower left hand corner
logoBatch.MultiTexCoord2f(0, 0.0f, 0.0f);
logoBatch.Vertex3f(x, y - height, 0.0f);
// Lower right hand corner
logoBatch.MultiTexCoord2f(0, width, 0.0f);
logoBatch.Vertex3f(x + width, y - height, 0.0f);
// Upper righ hand corner
logoBatch.MultiTexCoord2f(0, width, height);
logoBatch.Vertex3f(x + width, y, 0.0f);
logoBatch.end();
// Make 4 texture objects
glGenTextures(4, uiTextures);
// Load the Marble
glBindTexture(GL_TEXTURE_2D, uiTextures[0]);
gltLoadTextureTGA("marble.tga", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR, GL_REPEAT);
// Load Mars
glBindTexture(GL_TEXTURE_2D, uiTextures[1]);
gltLoadTextureTGA("marslike.tga", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR, GL_CLAMP_TO_EDGE);
// Load Moon
glBindTexture(GL_TEXTURE_2D, uiTextures[2]);
gltLoadTextureTGA("moonlike.tga", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR, GL_CLAMP_TO_EDGE);
// Load the Logo
glBindTexture(GL_TEXTURE_RECTANGLE, uiTextures[3]);
gltLoadTextureTGARect("OpenGL-Logo.tga", GL_NEAREST, GL_NEAREST, GL_CLAMP_TO_EDGE);
rectReplaceShader = gltLoadShaderWithFileEx("RectReplace.vert", "RectReplace.frag", 2,
GLT_ATTRIBUTE_VERTEX, "vVertex",
GLT_ATTRIBUTE_TEXTURE0, "vTexCoord");
locRectMVP = glGetUniformLocation(rectReplaceShader, "mvpMatrix");
locRectTexture = glGetUniformLocation(rectReplaceShader, "rectangleImage");
// Randomly place the spheres
for (int i = 0; i < NUM_SPHERES; i++) {
GLfloat x = ((GLfloat)((rand() % 400) - 200) * 0.1f);
GLfloat z = ((GLfloat)((rand() % 400) - 200) * 0.1f);
spheres[i].SetOrigin(x, 0.0f, z);
}
}
/**
* This function does any needed initialization on the rendering context.
* This is the first opportunity to do any OpenGL related tasks.
*/
void SetupRC()
{
// Blue background
glClearColor(0.0f, 0.0f, 1.0f, 1.0f );
shaderManager.init();
glEnable(GL_DEPTH_TEST);
gltCreateCylinder(bckgrndCylBatch, 4.0f, 4.0f, 5.2f, 1024, 1);
gltCreateDisk(diskBatch, 0.0f, 1.5f, 40, 10);
glass1Batch.begin(GL_TRIANGLE_FAN, 4, 1);
glass1Batch.Vertex3f(-1.0f, -1.0f, 0.0f);
glass1Batch.Vertex3f(1.0f, -1.0f, 0.0f);
glass1Batch.Vertex3f(1.0f, 1.0f, 0.0f);
glass1Batch.Vertex3f(-1.0f, 1.0f, 0.0f);
glass1Batch.end();
glass2Batch.begin(GL_TRIANGLE_FAN, 4, 1);
glass2Batch.Vertex3f(0.0f, 1.0f, 0.0f);
glass2Batch.Vertex3f(1.0f, 0.0f, 0.0f);
glass2Batch.Vertex3f(0.0f, -1.0f, 0.0f);
glass2Batch.Vertex3f(-1.0f, 0.0f, 0.0f);
glass2Batch.end();
glass3Batch.begin(GL_TRIANGLE_FAN, 3, 1);
glass3Batch.Vertex3f(0.0f, 1.0f, 0.0f);
glass3Batch.Vertex3f(1.0f, -1.0f, 0.0f);
glass3Batch.Vertex3f(-1.0f, -1.0f, 0.0f);
glass3Batch.end();
glass4Batch.begin(GL_TRIANGLE_FAN, 4, 1);
glass4Batch.Vertex3f(-1.0f, 1.0f, 0.0f);
glass4Batch.Vertex3f(1.0f, 0.5f, 0.0f);
glass4Batch.Vertex3f(1.0f, -1.0f, 0.0f);
glass4Batch.Vertex3f(-1.0f, -0.5f, 0.0f);
glass4Batch.end();
glGenTextures(2, textures);
glBindTexture(GL_TEXTURE_2D, textures[0]);
gltLoadTextureBMP("marble.bmp", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR, GL_REPEAT);
glBindTexture(GL_TEXTURE_2D, textures[1]);
gltLoadTextureBMP("start_line.bmp", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR, GL_REPEAT);
// create and bind an FBO
glGenFramebuffers(1, &msFBO);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, msFBO);
// create depth texture
glGenTextures(1, &depthTextureName);
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, depthTextureName);
glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, 8, GL_DEPTH_COMPONENT24, screenWidth, screenHeight, GL_FALSE);
// setup HDR render texture
glGenTextures(1, msTexture);
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, msTexture[0]);
glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, 8, GL_RGBA8, screenWidth, screenHeight, GL_FALSE);
// create and bind FBO
glGenFramebuffers(1, &msFBO);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, msFBO);
// attach texture to first color attachment and depth RBO
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D_MULTISAMPLE, msTexture[0], 0);
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D_MULTISAMPLE, depthTextureName, 0);
// reset framebuffer binding
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
// Load oit resolve shader
oitResolve = gltLoadShaderWithFileEx("basic.vs", "oitResolve.fs", 3,
GLT_ATTRIBUTE_VERTEX, "vVertex",
GLT_ATTRIBUTE_NORMAL, "vNormal",
GLT_ATTRIBUTE_TEXTURE0, "vTexCoord0");
glBindFragDataLocation(oitResolve, 0, "oColor");
glLinkProgram(oitResolve);
// Load multisample resolve shader
msResolve = gltLoadShaderWithFileEx("basic.vs", "msResolve.fs", 3,
GLT_ATTRIBUTE_VERTEX, "vVertex",
GLT_ATTRIBUTE_NORMAL, "vNormal",
GLT_ATTRIBUTE_TEXTURE0, "vTexCoord0");
glBindFragDataLocation(msResolve, 0, "oColor");
glLinkProgram(msResolve);
// Make sure all went well
gltCheckErrors(oitResolve);
gltCheckErrors(msResolve);
int numMasks = 0;
glGetIntegerv(GL_MAX_SAMPLE_MASK_WORDS, &numMasks);
log("GL_MAX_SAMPLE_MASK_WORDS: %d", numMasks);
}
