IWater* IWater::GetWater(IWater* currWaterRenderer, int nextWaterRendererMode)
{
static IWater baseWaterRenderer;
IWater* nextWaterRenderer = NULL;
if (currWaterRenderer != NULL) {
assert(water == currWaterRenderer);
if (currWaterRenderer->GetID() == nextWaterRendererMode) {
if (nextWaterRendererMode == IWater::WATER_RENDERER_BASIC) {
return currWaterRenderer;
}
}
// note: rendering thread(s) can concurrently dereference the
// <water> global, so they may not see destructed memory while
// it is being reinstantiated through <currWaterRenderer>
water = &baseWaterRenderer;
// for BumpWater, this needs to happen before a new renderer
// instance is created because its shaders must be recompiled
// (delayed deletion will fail)
delete currWaterRenderer;
}
if (nextWaterRendererMode < IWater::WATER_RENDERER_BASIC) {
nextWaterRendererMode = configHandler->GetInt("ReflectiveWater");
}
switch (nextWaterRendererMode) {
case WATER_RENDERER_DYNAMIC: {
const bool canLoad =
GLEW_ARB_fragment_program &&
GLEW_ARB_texture_float &&
ProgramStringIsNative(GL_FRAGMENT_PROGRAM_ARB, "ARB/waterDyn.fp");
if (canLoad) {
try {
nextWaterRenderer = new CDynWater();
} catch (const content_error& ex) {
delete nextWaterRenderer;
nextWaterRenderer = NULL;
LOG_L(L_ERROR, "Loading Dynamic Water failed, error: %s",
ex.what());
}
}
} break;
case WATER_RENDERER_BUMPMAPPED: {
const bool canLoad =
GLEW_ARB_shading_language_100 &&
GL_ARB_fragment_shader &&
GL_ARB_vertex_shader;
if (canLoad) {
try {
nextWaterRenderer = new CBumpWater();
} catch (const content_error& ex) {
delete nextWaterRenderer;
nextWaterRenderer = NULL;
LOG_L(L_ERROR, "Loading Bumpmapped Water failed, error: %s",
ex.what());
}
}
} break;
case WATER_RENDERER_REFL_REFR: {
const bool canLoad =
GLEW_ARB_fragment_program &&
GLEW_ARB_texture_rectangle;
if (canLoad) {
try {
nextWaterRenderer = new CRefractWater();
} catch (const content_error& ex) {
delete nextWaterRenderer;
nextWaterRenderer = NULL;
LOG_L(L_ERROR, "Loading Refractive Water failed, error: %s",
ex.what());
}
}
} break;
case WATER_RENDERER_REFLECTIVE: {
const bool canLoad =
GLEW_ARB_fragment_program &&
ProgramStringIsNative(GL_FRAGMENT_PROGRAM_ARB, "ARB/water.fp");
if (canLoad) {
try {
nextWaterRenderer = new CAdvWater();
} catch (const content_error& ex) {
delete nextWaterRenderer;
nextWaterRenderer = NULL;
LOG_L(L_ERROR, "Loading Reflective Water failed, error: %s",
ex.what());
}
}
} break;
}
if (nextWaterRenderer == NULL) {
nextWaterRenderer = new CBasicWater();
}
configHandler->Set("ReflectiveWater", nextWaterRenderer->GetID());
return nextWaterRenderer;
}
