// send all state to OpenGL (actually the currently bound texture).
// called from ogl_tex_upload.
static void state_latch(OglTexState* ots)
{
// filter
const GLint filter = ots->filter;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
const GLint mag_filter = (filter == GL_NEAREST)? GL_NEAREST : GL_LINEAR;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter);
// wrap
const GLint wrap = ots->wrap;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrap);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrap);
// .. only CLAMP and REPEAT are guaranteed to be available.
// if we're using one of the others, we squelch the error that
// may have resulted if this GL implementation is old.
if(wrap != GL_CLAMP && wrap != GL_REPEAT)
ogl_SquelchError(GL_INVALID_ENUM);
// anisotropy
const GLfloat anisotropy = ots->anisotropy;
if (anisotropy != 1.0f && ogl_tex_has_anisotropy())
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, anisotropy);
}
}
bool Compile(GLuint target, const char* targetName, GLuint program, const VfsPath& file, const CStr& code)
{
ogl_WarnIfError();
pglBindProgramARB(target, program);
ogl_WarnIfError();
pglProgramStringARB(target, GL_PROGRAM_FORMAT_ASCII_ARB, (GLsizei)code.length(), code.c_str());
if (ogl_SquelchError(GL_INVALID_OPERATION))
{
GLint errPos = 0;
glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errPos);
int errLine = std::count(code.begin(), code.begin() + std::min((int)code.length(), errPos + 1), '\n') + 1;
char* errStr = (char*)glGetString(GL_PROGRAM_ERROR_STRING_ARB);
LOGERROR(L"Failed to compile %hs program '%ls' (line %d):\n%hs", targetName, file.string().c_str(), errLine, errStr);
return false;
}
pglBindProgramARB(target, 0);
ogl_WarnIfError();
return true;
}