///////////////////////////////////////////////////////////////////////////////
// Initialize and load the stock shaders
bool GLShaderManager::InitializeStockShaders(void)
{
// Be warned, going over 128 shaders may cause ahickup for a reallocation.
// shaderTable.reserve(128);
uiStockShaders[GLT_SHADER_IDENTITY] = gltLoadShaderPairSrcWithAttributes(szIdentityShaderVP, szIdentityShaderFP, 1, GLT_ATTRIBUTE_VERTEX, "vVertex");
uiStockShaders[GLT_SHADER_FLAT] = gltLoadShaderPairSrcWithAttributes(szFlatShaderVP, szFlatShaderFP, 1, GLT_ATTRIBUTE_VERTEX, "vVertex");
uiStockShaders[GLT_SHADER_SHADED] = gltLoadShaderPairSrcWithAttributes(szShadedVP, szShadedFP, 2,
GLT_ATTRIBUTE_VERTEX, "vVertex", GLT_ATTRIBUTE_COLOR, "vColor");
uiStockShaders[GLT_SHADER_DEFAULT_LIGHT] = gltLoadShaderPairSrcWithAttributes(szDefaultLightVP, szDefaultLightFP, 2,
GLT_ATTRIBUTE_VERTEX, "vVertex", GLT_ATTRIBUTE_NORMAL, "vNormal");
uiStockShaders[GLT_SHADER_POINT_LIGHT_DIFF] = gltLoadShaderPairSrcWithAttributes(szPointLightDiffVP, szPointLightDiffFP, 2,
GLT_ATTRIBUTE_VERTEX, "vVertex", GLT_ATTRIBUTE_NORMAL, "vNormal");
uiStockShaders[GLT_SHADER_TEXTURE_REPLACE] = gltLoadShaderPairSrcWithAttributes(szTextureReplaceVP, szTextureReplaceFP, 2,
GLT_ATTRIBUTE_VERTEX, "vVertex",
GLT_ATTRIBUTE_TEXTURE0, "vTexCoord0");
uiStockShaders[GLT_SHADER_COLOR_NO_TEXTURE] = gltLoadShaderPairSrcWithAttributes(szColorNoTextureVP, szColorNoTextureFP, 2,
GLT_ATTRIBUTE_VERTEX, "vVertex",
GLT_ATTRIBUTE_COLOR, "vColor");
uiStockShaders[GLT_SHADER_TEXTURE_MODULATE] = gltLoadShaderPairSrcWithAttributes(szTextureModulateVP, szTextureModulateFP, 2,
GLT_ATTRIBUTE_VERTEX, "vVertex", GLT_ATTRIBUTE_TEXTURE0, "vTexCoord0");
uiStockShaders[GLT_SHADER_TEXTURE_POINT_LIGHT_DIFF] = gltLoadShaderPairSrcWithAttributes(szTexturePointLightDiffVP, szTexturePointLightDiffFP, 3,
GLT_ATTRIBUTE_VERTEX, "vVertex", GLT_ATTRIBUTE_NORMAL, "vNormal", GLT_ATTRIBUTE_TEXTURE0, "vTexCoord0");
uiStockShaders[GLT_SHADER_TEXTURE_RECT_REPLACE] = gltLoadShaderPairSrcWithAttributes(szTextureRectReplaceVP, szTextureRectReplaceFP, 2,
GLT_ATTRIBUTE_VERTEX, "vVertex", GLT_ATTRIBUTE_TEXTURE0, "vTexCoord0");
if(uiStockShaders[0] != 0)
return true;
return false;
}
// This function does any needed initialization on the rendering
// context.
void SetupRC()
{
M3DVector3f vVerts[SMALL_STARS]; // SMALL_STARS is the largest batch we are going to need
int i;
shaderManager.InitializeStockShaders();
#ifdef OPENGL_ES
pointSizeShader = gltLoadShaderPairSrcWithAttributes(szFlatShaderVP, szFlatShaderFP, 1, GLT_ATTRIBUTE_VERTEX, "vVertex");
#endif//OPENGL_ES
// Populate star list
smallStarBatch.Begin(GL_POINTS, SMALL_STARS);
for(i = 0; i < SMALL_STARS; i++)
{
vVerts[i][0] = (GLfloat)(rand() % SCREEN_X);
vVerts[i][1] = (GLfloat)(rand() % (SCREEN_Y - 100)) + 100.0f;
vVerts[i][2] = 0.0f;
}
smallStarBatch.CopyVertexData3f(vVerts);
smallStarBatch.End();
// Populate star list
mediumStarBatch.Begin(GL_POINTS, MEDIUM_STARS);
for(i = 0; i < MEDIUM_STARS; i++)
{
vVerts[i][0] = (GLfloat)(rand() % SCREEN_X);
vVerts[i][1] = (GLfloat)(rand() % (SCREEN_Y - 100)) + 100.0f;
vVerts[i][2] = 0.0f;
}
mediumStarBatch.CopyVertexData3f(vVerts);
mediumStarBatch.End();
// Populate star list
largeStarBatch.Begin(GL_POINTS, LARGE_STARS);
for(i = 0; i < LARGE_STARS; i++)
{
vVerts[i][0] = (GLfloat)(rand() % SCREEN_X);
vVerts[i][1] = (GLfloat)(rand() % (SCREEN_Y - 100)) + 100.0f;
vVerts[i][2] = 0.0f;
}
largeStarBatch.CopyVertexData3f(vVerts);
largeStarBatch.End();
M3DVector3f vMountains[12] = { 0.0f, 25.0f, 0.0f,
50.0f, 100.0f, 0.0f,
100.0f, 25.0f, 0.0f,
225.0f, 125.0f, 0.0f,
300.0f, 50.0f, 0.0f,
375.0f, 100.0f, 0.0f,
460.0f, 25.0f, 0.0f,
525.0f, 100.0f, 0.0f,
600.0f, 20.0f, 0.0f,
675.0f, 70.0f, 0.0f,
750.0f, 25.0f, 0.0f,
800.0f, 90.0f, 0.0f };
mountainRangeBatch.Begin(GL_LINE_STRIP, 12);
mountainRangeBatch.CopyVertexData3f(vMountains);
mountainRangeBatch.End();
// The Moon
GLfloat x = 700.0f; // Location and radius of moon
GLfloat y = 500.0f;
GLfloat r = 50.0f;
GLfloat angle = 0.0f; // Another looping variable
moonBatch.Begin(GL_TRIANGLE_FAN, 34);
int nVerts = 0;
vVerts[nVerts][0] = x;
vVerts[nVerts][1] = y;
vVerts[nVerts][2] = 0.0f;
for(angle = 0; angle < 2.0f * 3.141592f; angle += 0.2f) {
nVerts++;
vVerts[nVerts][0] = x + float(cos(angle)) * r;
vVerts[nVerts][1] = y + float(sin(angle)) * r;
vVerts[nVerts][2] = 0.0f;
}
nVerts++;
vVerts[nVerts][0] = x + r;;
vVerts[nVerts][1] = y;
vVerts[nVerts][2] = 0.0f;
moonBatch.CopyVertexData3f(vVerts);
moonBatch.End();
// Black background
glClearColor(0.0f, 0.0f, 0.0f, 1.0f );
}