void CGlobalRendering::PostInit() {
supportNPOTs = GLEW_ARB_texture_non_power_of_two;
haveARB = GLEW_ARB_vertex_program && GLEW_ARB_fragment_program;
haveGLSL = (glGetString(GL_SHADING_LANGUAGE_VERSION) != NULL);
haveGLSL &= GLEW_ARB_vertex_shader && GLEW_ARB_fragment_shader;
haveGLSL &= !!GLEW_VERSION_2_0; // we want OpenGL 2.0 core functions
{
const char* glVendor = (const char*) glGetString(GL_VENDOR);
const char* glRenderer = (const char*) glGetString(GL_RENDERER);
const std::string vendor = (glVendor != NULL)? StringToLower(std::string(glVendor)): "";
const std::string renderer = (glRenderer != NULL)? StringToLower(std::string(glRenderer)): "";
haveATI = (vendor.find("ati ") != std::string::npos) || (vendor.find("amd ") != std::string::npos);
haveMesa = (renderer.find("mesa ") != std::string::npos);
haveIntel = (vendor.find("intel ") != std::string::npos);
haveNvidia = (vendor.find("nvidia ") != std::string::npos);
//FIXME Neither Intel's nor Mesa's GLSL implementation seem to be in a workable state atm (date: Nov. 2011)
haveGLSL &= !haveIntel;
haveGLSL &= !haveMesa;
if (haveATI) {
// x-series doesn't support NPOTs (but hd-series does)
supportNPOTs = (renderer.find(" x") == std::string::npos && renderer.find(" 9") == std::string::npos);
}
}
// use some ATI bugfixes?
const int atiHacksCfg = configHandler->GetInt("AtiHacks");
atiHacks = haveATI && (atiHacksCfg < 0); // runtime detect
atiHacks |= (atiHacksCfg > 0); // user override
// Runtime compress textures?
if (GLEW_ARB_texture_compression) {
// we don't even need to check it, 'cos groundtextures must have that extension
// default to off because it reduces quality (smallest mipmap level is bigger)
compressTextures = configHandler->GetBool("CompressTextures");
}
// maximum 2D texture size
{
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
}
// detect if GL_DEPTH_COMPONENT24 is supported (many ATIs don't do so)
{
// ATI seems to support GL_DEPTH_COMPONENT24 for static textures, but you can't render to them
/*
GLint state = 0;
glTexImage2D(GL_PROXY_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, 16, 16, 0, GL_LUMINANCE, GL_FLOAT, NULL);
glGetTexLevelParameteriv(GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &state);
support24bitDepthBuffers = (state > 0);
*/
support24bitDepthBuffers = false;
if (FBO::IsSupported() && !atiHacks) {
const int fboSizeX = 16, fboSizeY = 16;
FBO fbo;
fbo.Bind();
fbo.CreateRenderBuffer(GL_COLOR_ATTACHMENT0_EXT, GL_RGBA8, fboSizeX, fboSizeY);
fbo.CreateRenderBuffer(GL_DEPTH_ATTACHMENT_EXT, GL_DEPTH_COMPONENT24, fboSizeX, fboSizeY);
const GLenum status = fbo.GetStatus();
fbo.Unbind();
support24bitDepthBuffers = (status == GL_FRAMEBUFFER_COMPLETE_EXT);
}
}
// print info
LOG(
"GL info:\n"
"\thaveARB: %i, haveGLSL: %i, ATI hacks: %i\n"
"\tFBO support: %i, NPOT-texture support: %i, 24bit Z-buffer support: %i\n"
"\tmaximum texture size: %i, compress MIP-map textures: %i",
haveARB, haveGLSL, atiHacks,
FBO::IsSupported(), supportNPOTs, support24bitDepthBuffers,
maxTextureSize, compressTextures
);
}
void CGlobalRendering::PostInit() {
supportNPOTs = GLEW_ARB_texture_non_power_of_two;
haveARB = GLEW_ARB_vertex_program && GLEW_ARB_fragment_program;
haveGLSL = (glGetString(GL_SHADING_LANGUAGE_VERSION) != NULL);
haveGLSL &= GLEW_ARB_vertex_shader && GLEW_ARB_fragment_shader;
haveGLSL &= !!GLEW_VERSION_2_0; // we want OpenGL 2.0 core functions
{
const char* glVendor = (const char*) glGetString(GL_VENDOR);
const char* glRenderer = (const char*) glGetString(GL_RENDERER);
const std::string vendor = (glVendor != NULL)? StringToLower(std::string(glVendor)): "";
const std::string renderer = (glRenderer != NULL)? StringToLower(std::string(glRenderer)): "";
haveATI = (vendor.find("ati ") != std::string::npos) || (vendor.find("amd ") != std::string::npos);
haveMesa = (renderer.find("mesa ") != std::string::npos) || (renderer.find("gallium ") != std::string::npos);
haveIntel = (vendor.find("intel") != std::string::npos);
haveNvidia = (vendor.find("nvidia ") != std::string::npos);
//FIXME Neither Intel's nor Mesa's GLSL implementation seem to be in a workable state atm (date: Nov. 2011)
haveGLSL &= !haveIntel;
haveGLSL &= !haveMesa;
//FIXME add an user config to force enable it!
if (haveATI) {
// x-series doesn't support NPOTs (but hd-series does)
supportNPOTs = (renderer.find(" x") == std::string::npos && renderer.find(" 9") == std::string::npos);
}
}
// use some ATI bugfixes?
const int atiHacksCfg = configHandler->GetInt("AtiHacks");
atiHacks = haveATI && (atiHacksCfg < 0); // runtime detect
atiHacks |= (atiHacksCfg > 0); // user override
// Runtime compress textures?
if (GLEW_ARB_texture_compression) {
// we don't even need to check it, 'cos groundtextures must have that extension
// default to off because it reduces quality (smallest mipmap level is bigger)
compressTextures = configHandler->GetBool("CompressTextures");
}
#ifdef GLEW_NV_primitive_restart
supportRestartPrimitive = !!(GLEW_NV_primitive_restart);
#endif
// maximum 2D texture size
{
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
}
// retrieve maximu smoothed PointSize
float2 aliasedPointSizeRange, smoothPointSizeRange;
glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, (GLfloat*)&aliasedPointSizeRange);
glGetFloatv(GL_SMOOTH_POINT_SIZE_RANGE, (GLfloat*)&smoothPointSizeRange);
maxSmoothPointSize = std::min(aliasedPointSizeRange.y, smoothPointSizeRange.y);
// some GLSL relevant information
{
glGetIntegerv(GL_MAX_UNIFORM_BUFFER_BINDINGS, &glslMaxUniformBufferBindings);
glGetIntegerv(GL_MAX_UNIFORM_BLOCK_SIZE, &glslMaxUniformBufferSize);
glGetIntegerv(GL_MAX_VARYING_FLOATS, &glslMaxVaryings);
glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &glslMaxAttributes);
glGetIntegerv(GL_MAX_DRAW_BUFFERS, &glslMaxDrawBuffers);
glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &glslMaxRecommendedIndices);
glGetIntegerv(GL_MAX_ELEMENTS_VERTICES, &glslMaxRecommendedVertices);
glslMaxVaryings /= 4; // GL_MAX_VARYING_FLOATS returns max individual floats, we want float4
}
// detect if GL_DEPTH_COMPONENT24 is supported (many ATIs don't do so)
{
// ATI seems to support GL_DEPTH_COMPONENT24 for static textures, but you can't render to them
/*
GLint state = 0;
glTexImage2D(GL_PROXY_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, 16, 16, 0, GL_LUMINANCE, GL_FLOAT, NULL);
glGetTexLevelParameteriv(GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &state);
support24bitDepthBuffers = (state > 0);
*/
support24bitDepthBuffers = false;
if (FBO::IsSupported() && !atiHacks) {
const int fboSizeX = 16, fboSizeY = 16;
FBO fbo;
fbo.Bind();
fbo.CreateRenderBuffer(GL_COLOR_ATTACHMENT0_EXT, GL_RGBA8, fboSizeX, fboSizeY);
fbo.CreateRenderBuffer(GL_DEPTH_ATTACHMENT_EXT, GL_DEPTH_COMPONENT24, fboSizeX, fboSizeY);
const GLenum status = fbo.GetStatus();
fbo.Unbind();
support24bitDepthBuffers = (status == GL_FRAMEBUFFER_COMPLETE_EXT);
}
}
// print info
LOG(
"GL info:\n"
"\thaveARB: %i, haveGLSL: %i, ATI hacks: %i\n"
"\tFBO support: %i, NPOT-texture support: %i, 24bit Z-buffer support: %i\n"
"\tmaximum texture size: %i, compress MIP-map textures: %i\n"
"\tmaximum SmoothPointSize: %0.0f, maximum vec4 varying/attributes: %i/%i\n"
"\tmaximum drawbuffers: %i, maximum recommended indices/vertices: %i/%i\n"
"\tnumber of UniformBufferBindings: %i (%ikB)",
haveARB, haveGLSL, atiHacks,
FBO::IsSupported(), supportNPOTs, support24bitDepthBuffers,
maxTextureSize, compressTextures, maxSmoothPointSize,
glslMaxVaryings, glslMaxAttributes, glslMaxDrawBuffers,
glslMaxRecommendedIndices, glslMaxRecommendedVertices,
glslMaxUniformBufferBindings, glslMaxUniformBufferSize / 1024
);
teamNanospray = configHandler->GetBool("TeamNanoSpray");
}
