RendererOGL::RendererOGL(WindowSDL *window, const Graphics::Settings &vs)
: Renderer(window, window->GetWidth(), window->GetHeight())
, m_numLights(0)
, m_numDirLights(0)
//the range is very large due to a "logarithmic z-buffer" trick used
//http://outerra.blogspot.com/2009/08/logarithmic-z-buffer.html
//http://www.gamedev.net/blog/73/entry-2006307-tip-of-the-day-logarithmic-zbuffer-artifacts-fix/
, m_minZNear(0.0001f)
, m_maxZFar(10000000.0f)
, m_useCompressedTextures(false)
, m_invLogZfarPlus1(0.f)
, m_activeRenderTarget(0)
, m_activeRenderState(nullptr)
, m_matrixMode(MatrixMode::MODELVIEW)
{
if (!initted) {
initted = true;
if (!ogl_LoadFunctions())
Error("glLoadGen failed to load functions.\n");
if (ogl_ext_EXT_texture_compression_s3tc == ogl_LOAD_FAILED)
Error(
"OpenGL extension GL_EXT_texture_compression_s3tc not supported.\n"
"Pioneer can not run on your graphics card as it does not support compressed (DXTn/S3TC) format textures."
);
}
m_viewportStack.push(Viewport());
const bool useDXTnTextures = vs.useTextureCompression;
m_useCompressedTextures = useDXTnTextures;
//XXX bunch of fixed function states here!
glCullFace(GL_BACK);
glFrontFace(GL_CCW);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
SetMatrixMode(MatrixMode::MODELVIEW);
m_modelViewStack.push(matrix4x4f::Identity());
m_projectionStack.push(matrix4x4f::Identity());
SetClearColor(Color4f(0.f, 0.f, 0.f, 0.f));
SetViewport(0, 0, m_width, m_height);
if (vs.enableDebugMessages)
GLDebug::Enable();
}
// ----------------------------------------------------------------------------
RendererOGL::RendererOGL(WindowSDL *window, const Graphics::Settings &vs)
: Renderer(window, window->GetWidth(), window->GetHeight())
, m_numLights(0)
, m_numDirLights(0)
//the range is very large due to a "logarithmic z-buffer" trick used
//http://outerra.blogspot.com/2009/08/logarithmic-z-buffer.html
//http://www.gamedev.net/blog/73/entry-2006307-tip-of-the-day-logarithmic-zbuffer-artifacts-fix/
, m_minZNear(0.0001f)
, m_maxZFar(10000000.0f)
, m_useCompressedTextures(false)
, m_invLogZfarPlus1(0.f)
, m_activeRenderTarget(0)
, m_activeRenderState(nullptr)
, m_matrixMode(MatrixMode::MODELVIEW)
{
if (!initted) {
initted = true;
if (!ogl_LoadFunctions())
Error(
"Pioneer can not run on your graphics card as it does not appear to support OpenGL 3.3\n"
"Please check to see if your GPU driver vendor has an updated driver - or that drivers are installed correctly."
);
if (ogl_ext_EXT_texture_compression_s3tc == ogl_LOAD_FAILED)
Error(
"OpenGL extension GL_EXT_texture_compression_s3tc not supported.\n"
"Pioneer can not run on your graphics card as it does not support compressed (DXTn/S3TC) format textures."
);
}
m_viewportStack.push(Viewport());
const bool useDXTnTextures = vs.useTextureCompression;
m_useCompressedTextures = useDXTnTextures;
const bool useAnisotropicFiltering = vs.useAnisotropicFiltering;
m_useAnisotropicFiltering = useAnisotropicFiltering;
//XXX bunch of fixed function states here!
glCullFace(GL_BACK);
glFrontFace(GL_CCW);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glDepthRange(0.0,1.0);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
glEnable(GL_PROGRAM_POINT_SIZE);
glHint(GL_TEXTURE_COMPRESSION_HINT, GL_NICEST);
glHint(GL_FRAGMENT_SHADER_DERIVATIVE_HINT, GL_NICEST);
SetMatrixMode(MatrixMode::MODELVIEW);
m_modelViewStack.push(matrix4x4f::Identity());
m_projectionStack.push(matrix4x4f::Identity());
SetClearColor(Color4f(0.f, 0.f, 0.f, 0.f));
SetViewport(0, 0, m_width, m_height);
if (vs.enableDebugMessages)
GLDebug::Enable();
// check enum PrimitiveType matches OpenGL values
assert(POINTS == GL_POINTS);
assert(LINE_SINGLE == GL_LINES);
assert(LINE_LOOP == GL_LINE_LOOP);
assert(LINE_STRIP == GL_LINE_STRIP);
assert(TRIANGLES == GL_TRIANGLES);
assert(TRIANGLE_STRIP == GL_TRIANGLE_STRIP);
assert(TRIANGLE_FAN == GL_TRIANGLE_FAN);
}
