bool CRenderSystemGL::InitRenderSystem()
{
m_bVSync = false;
m_iVSyncMode = 0;
m_iSwapStamp = 0;
m_iSwapTime = 0;
m_iSwapRate = 0;
m_bVsyncInit = false;
m_maxTextureSize = 2048;
m_renderCaps = 0;
m_RenderExtensions = " ";
m_RenderExtensions += (const char*) glGetString(GL_EXTENSIONS);
m_RenderExtensions += " ";
LogGraphicsInfo();
// Get the GL version number
m_RenderVersionMajor = 0;
m_RenderVersionMinor = 0;
const char* ver = (const char*)glGetString(GL_VERSION);
if (ver != 0)
{
sscanf(ver, "%d.%d", &m_RenderVersionMajor, &m_RenderVersionMinor);
m_RenderVersion = ver;
}
if (IsExtSupported("GL_ARB_shading_language_100"))
{
ver = (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION);
if (ver)
{
sscanf(ver, "%d.%d", &m_glslMajor, &m_glslMinor);
}
else
{
m_glslMajor = 1;
m_glslMinor = 0;
}
}
// Get our driver vendor and renderer
const char* tmpVendor = (const char*) glGetString(GL_VENDOR);
m_RenderVendor.clear();
if (tmpVendor != NULL)
m_RenderVendor = tmpVendor;
const char* tmpRenderer = (const char*) glGetString(GL_RENDERER);
m_RenderRenderer.clear();
if (tmpRenderer != NULL)
m_RenderRenderer = tmpRenderer;
// grab our capabilities
if (IsExtSupported("GL_EXT_texture_compression_s3tc"))
m_renderCaps |= RENDER_CAPS_DXT;
if (IsExtSupported("GL_ARB_texture_non_power_of_two"))
{
m_renderCaps |= RENDER_CAPS_NPOT;
if (m_renderCaps & RENDER_CAPS_DXT)
m_renderCaps |= RENDER_CAPS_DXT_NPOT;
}
//Check OpenGL quirks and revert m_renderCaps as needed
CheckOpenGLQuirks();
m_bRenderCreated = true;
return true;
}
bool CRenderSystemGL::InitRenderSystem()
{
m_bVSync = false;
m_iVSyncMode = 0;
m_iSwapStamp = 0;
m_iSwapTime = 0;
m_iSwapRate = 0;
m_bVsyncInit = false;
m_maxTextureSize = 2048;
m_renderCaps = 0;
// init glew library
GLenum err = glewInit();
if (GLEW_OK != err)
{
// Problem: glewInit failed, something is seriously wrong
CLog::Log(LOGERROR, "InitRenderSystem() glewInit returned %i: %s", err, glewGetErrorString(err));
return false;
}
// Get the GL version number
m_RenderVersionMajor = 0;
m_RenderVersionMinor = 0;
const char* ver = (const char*)glGetString(GL_VERSION);
if (ver != 0)
{
sscanf(ver, "%d.%d", &m_RenderVersionMajor, &m_RenderVersionMinor);
m_RenderVersion = ver;
}
if (glewIsSupported("GL_ARB_shading_language_100"))
{
ver = (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION);
if (ver)
{
sscanf(ver, "%d.%d", &m_glslMajor, &m_glslMinor);
}
else
{
m_glslMajor = 1;
m_glslMinor = 0;
}
}
// Get our driver vendor and renderer
m_RenderVendor = (const char*) glGetString(GL_VENDOR);
m_RenderRenderer = (const char*) glGetString(GL_RENDERER);
// grab our capabilities
if (glewIsSupported("GL_EXT_texture_compression_s3tc"))
m_renderCaps |= RENDER_CAPS_DXT;
if (glewIsSupported("GL_ARB_texture_non_power_of_two"))
{
m_renderCaps |= RENDER_CAPS_NPOT;
if (m_renderCaps & RENDER_CAPS_DXT)
m_renderCaps |= RENDER_CAPS_DXT_NPOT;
}
//Check OpenGL quirks and revert m_renderCaps as needed
CheckOpenGLQuirks();
m_RenderExtensions = " ";
m_RenderExtensions += (const char*) glGetString(GL_EXTENSIONS);
m_RenderExtensions += " ";
LogGraphicsInfo();
m_bRenderCreated = true;
return true;
}
bool CRenderSystemGL::InitRenderSystem()
{
m_bVSync = false;
m_bVsyncInit = false;
m_maxTextureSize = 2048;
m_renderCaps = 0;
// Get the GL version number
m_RenderVersionMajor = 0;
m_RenderVersionMinor = 0;
const char* ver = (const char*)glGetString(GL_VERSION);
if (ver != 0)
{
sscanf(ver, "%d.%d", &m_RenderVersionMajor, &m_RenderVersionMinor);
m_RenderVersion = ver;
}
m_RenderExtensions = " ";
if (m_RenderVersionMajor > 3 ||
(m_RenderVersionMajor == 3 && m_RenderVersionMinor >= 2))
{
GLint n;
glGetIntegerv(GL_NUM_EXTENSIONS, &n);
if (n > 0)
{
GLint i;
for (i = 0; i < n; i++)
{
m_RenderExtensions += (const char*)glGetStringi(GL_EXTENSIONS, i);
m_RenderExtensions += " ";
}
}
}
else
{
m_RenderExtensions += (const char*) glGetString(GL_EXTENSIONS);
}
m_RenderExtensions += " ";
if (IsExtSupported("GL_ARB_shading_language_100"))
{
ver = (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION);
if (ver)
{
sscanf(ver, "%d.%d", &m_glslMajor, &m_glslMinor);
}
else
{
m_glslMajor = 1;
m_glslMinor = 0;
}
}
LogGraphicsInfo();
// Get our driver vendor and renderer
const char* tmpVendor = (const char*) glGetString(GL_VENDOR);
m_RenderVendor.clear();
if (tmpVendor != NULL)
m_RenderVendor = tmpVendor;
const char* tmpRenderer = (const char*) glGetString(GL_RENDERER);
m_RenderRenderer.clear();
if (tmpRenderer != NULL)
m_RenderRenderer = tmpRenderer;
// grab our capabilities
if (IsExtSupported("GL_EXT_texture_compression_s3tc"))
m_renderCaps |= RENDER_CAPS_DXT;
if (IsExtSupported("GL_ARB_texture_non_power_of_two"))
{
m_renderCaps |= RENDER_CAPS_NPOT;
if (m_renderCaps & RENDER_CAPS_DXT)
m_renderCaps |= RENDER_CAPS_DXT_NPOT;
}
//Check OpenGL quirks and revert m_renderCaps as needed
CheckOpenGLQuirks();
m_bRenderCreated = true;
if (m_RenderVersionMajor > 3 ||
(m_RenderVersionMajor == 3 && m_RenderVersionMinor >= 2))
{
glGenVertexArrays(1, &m_vertexArray);
glBindVertexArray(m_vertexArray);
}
InitialiseShader();
return true;
}