void EJCanvasContext::prepare()
{
//Bind the frameBuffer and vertexBuffer array
#ifdef _WINDOWS
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, msaaEnabled ? msaaFrameBuffer : viewFrameBuffer );
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, msaaEnabled ? msaaRenderBuffer : viewRenderBuffer );
#else
glBindFramebufferOES(GL_FRAMEBUFFER_OES, msaaEnabled ? msaaFrameBuffer : viewFrameBuffer );
glBindRenderbufferOES(GL_RENDERBUFFER_OES, msaaEnabled ? msaaRenderBuffer : viewRenderBuffer );
#endif
glViewport(0, 0, viewportWidth, viewportHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
#ifdef _WINDOWS
glOrtho(0, width, 0, height, -1, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
#else
glOrthof(0, width, 0, height, -1, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
#endif
EJCompositeOperation op = state->globalCompositeOperation;
glBlendFunc( EJCompositeOperationFuncs[op].source, EJCompositeOperationFuncs[op].destination );
glDisable(GL_TEXTURE_2D);
currentTexture = NULL;
EJTexture::setSmoothScaling(imageSmoothingEnabled);
bindVertexBuffer();
if( state->clipPath ) {
glDepthFunc(GL_EQUAL);
}
else {
glDepthFunc(GL_ALWAYS);
}
}
int main( void )
{
initGLFW();
initWindow();
initGLEW();
initKeyboard();
// Dark blue background
glClearColor(0.0f, 0.0f, 0.4f, 0.0f);
int size = 5;
float* map = generateHeightMap(size);
printf("generated map\n" );
std::vector<glm::vec3> terrain;
mapHeightsToPoints(terrain, map, size);
printf("mapped to points\n");
// GLuint* indices = generateIndices(terrain, size);
uint terrainVertexAmount = size* size * 3;
uint indiceAmount = 3 * (1 << size);
for(int i = 0; i < terrain.size(); ++i){
printf("[%f, %f, %f]\n", terrain[i].x, terrain[i].y, terrain[i].z);
}
printf("vertices %d\n", terrainVertexAmount);
GLuint VertexArrayID = newVertexArray();
// Create and compile our GLSL program from the shaders
GLuint programID = LoadShaders( "SimpleVertexShader.vertexshader", "SimpleFragmentShader.fragmentshader" );
printf("loaded\n");
initMatrices(programID);
GLuint vertexbuffer = newVertexBuffer(terrainVertexAmount, &terrain);
double lastTime = glfwGetTime();
int nbFrames = 0;
printf("loop\n");
initDepth();
do{
// Clear the screen
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Use our shader
glUseProgram(programID);
// TODO
// recalculateMatrices();
// Send our transformation to the currently bound shader,
// in the "MVP" uniform
glUniformMatrix4fv(MatrixID, 1, GL_FALSE, &MVP[0][0]);
// 1rst attribute buffer : vertices
bindVertexBuffer(vertexbuffer);
// Draw the triangle !
glDrawArrays(GL_TRIANGLE_FAN, 0, terrainVertexAmount); // 3 indices starting at 0 -> 1 triangle
glDisableVertexAttribArray(0);
// Swap buffers
glfwSwapBuffers(window);
glfwPollEvents();
// measureTime(lastTime, &nbFrames);
} // Check if the ESC key was pressed or the window was closed
while( glfwGetKey(window, GLFW_KEY_ESCAPE ) != GLFW_PRESS &&
glfwWindowShouldClose(window) == 0 );
// Cleanup VBO
glDeleteBuffers(1, &vertexbuffer);
glDeleteVertexArrays(1, &VertexArrayID);
glDeleteProgram(programID);
// Close OpenGL window and terminate GLFW
glfwTerminate();
// normal** ns = generateNormals(map, size);
return 0;
}
