C++ (Cpp) TextField::getTextureWidth Beispiele

Beispiel #1

Datei: main.cpp Projekt: astrellon/GPP

void display(void)
{
	glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glLoadIdentity();

	if(displayError)
	{
		orthographicView();

		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

		txtInstructions.render((screenWidth - txtInstructions.getTextureWidth()) / 2.0f, (screenHeight - txtInstructions.getTextureHeight()) / 2.0f);

		glFlush();
		return;
	}

	glPushMatrix();

	// Setup the navigation
	glTranslated(0, 0, -zoom);
	glRotatef(camRotateX, 1, 0, 0);
	glRotatef(camRotateY, 0, 1, 0);
	glTranslated(0, ROOM_SIZE, 0);

	// Setup drawing for the scene.
	perspectiveView();
	
#if _USE_MT
	// If the render thread needs to wait for new spheres to be added.
	while(pauseSimulation)
	{
		boost::this_thread::yield();
	}

	threadStarted();
#endif

	renderFrame++;
	renderFrameCounter++;

	glEnable(GL_DEPTH_TEST);

	glColor3f(1.0f, 1.0f, 1.0f);
	
	glUseProgram(g_program);
	glUniform3fv(g_programCameraPositionLocation, 1, g_cameraPosition);
	glUniform3fv(g_programLightDirectionLocation, 1, g_lightDirection);
	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, sphereMesh.indexBufferId);

	// We are using instanced rendering, however we cannot draw all the spheres at once.
	// So we have a maximum number of objects that can be rendered at once and we'll just
	// render that many at a time until we have less spheres than MAX_OBJECTS_PER_RENDER 
	// left to render.
	for(int objectIndex = 0; objectIndex < numSpheres; objectIndex += MAX_OBJECTS_PER_RENDER)
	{
		int numObjects = MAX_OBJECTS_PER_RENDER;
		// Are we going to be rendering more spheres than we should?
		if (numObjects + objectIndex > numSpheres)
		{
			numObjects = numSpheres - objectIndex;
		}
		Vector3 *positionIndex = spherePositions + objectIndex;
		glUniform4fv(g_programObjectPositionLocation, numObjects, (float *)positionIndex);
		// Tell the shader the size of the user sphere.
		// Due to the way the shader renders multiple instances, it only knows the id
		// of the current instance it is rendering, which does not reflect the sphere's actual
		// id.
		// So we will set that the size of the userSphere only on the first instanced render
		// and all later renders it will be zero.
		glUniform1f(g_programUserSphereLocation, (objectIndex == 0) * userSphereSize);

		glDrawElementsInstancedEXT(GL_TRIANGLES, sphereMesh.numIndicies, GL_UNSIGNED_INT, 0, numObjects);
	}

	glUseProgram(0);
	
#if _USE_MT
	threadStopped();
#endif

	glPopMatrix();

	// Setup drawing for the interface.
	orthographicView();

	char buff[64];

	sprintf(buff, "FPS: %d", framesPerSecond);
	txtRenderFrames.setText(buff);

	sprintf(buff, "PPS: %.1f", physicsPerSecond);
	txtPhysicsFrames.setText(buff);

	glDisable(GL_DEPTH_TEST);
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

	float yPos = -2.0f;
	
	txtInstructions.render(10, yPos += 12.0f);
	txtInstructions2.render(10, yPos += 12.0f);
	txtNumThreads.render(10, yPos += 12.0f);
	txtNumSpheres.render(10, yPos += 12.0f);
	txtRenderFrames.render(10, yPos += 12.0f);
	txtPhysicsFrames.render(10, yPos += 12.0f);
	
	glDisable(GL_BLEND);

	glFlush();
}