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Added get_load_error function. Needed to know if the file was properly loaded or not before using a shader.

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This commit is contained in:
aignacio_sf 2006-02-10 20:35:59 +00:00
parent bcb1ff0418
commit ffbde58774
3 changed files with 34 additions and 20 deletions
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18
panda/src/pgraph/shader.I
View File

@ -30,7 +30,7 @@ get_file() const {
////////////////////////////////////////////////////////////////////
// Function: Shader::get_body
// Access: Published
// Description:
// Description:
////////////////////////////////////////////////////////////////////
INLINE const string &Shader::
get_body() const {
@ -40,7 +40,7 @@ get_body() const {
////////////////////////////////////////////////////////////////////
// Function: Shader::get_name
// Access: Published
// Description:
// Description:
////////////////////////////////////////////////////////////////////
INLINE const string &Shader::
get_name() const {
@ -50,17 +50,27 @@ get_name() const {
////////////////////////////////////////////////////////////////////
// Function: Shader::get_loaded
// Access: Published
// Description:
// Description:
////////////////////////////////////////////////////////////////////
INLINE bool Shader::
get_loaded() const {
return _loaded;
}
////////////////////////////////////////////////////////////////////
// Function: Shader::get_load_error
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE bool Shader::
get_load_error() const {
return _load_error;
}
////////////////////////////////////////////////////////////////////
// Function: Shader::get_preprocessor
// Access: Published
// Description:
// Description:
////////////////////////////////////////////////////////////////////
INLINE int Shader::
get_preprocessor() const {

16
panda/src/pgraph/shader.cxx
View File

@ -26,16 +26,17 @@ Shader::MakeTable Shader::_make_table;
////////////////////////////////////////////////////////////////////
// Function: Shader::Constructor
// Access: Private
// Description:
// Description:
////////////////////////////////////////////////////////////////////
Shader::
Shader() {
this -> _load_error = false;
}
////////////////////////////////////////////////////////////////////
// Function: Shader::Destructor
// Access: Private
// Description:
// Description:
////////////////////////////////////////////////////////////////////
Shader::
~Shader() {
@ -51,7 +52,7 @@ Shader::
////////////////////////////////////////////////////////////////////
// Function: Shader::load
// Access: Published, Static
// Description:
// Description:
////////////////////////////////////////////////////////////////////
CPT(Shader) Shader::
load(const string &file, int preprocessor) {
@ -61,7 +62,7 @@ load(const string &file, int preprocessor) {
////////////////////////////////////////////////////////////////////
// Function: Shader::load
// Access: Published, Static
// Description:
// Description:
////////////////////////////////////////////////////////////////////
CPT(Shader) Shader::
load(const Filename &file, int preprocessor) {
@ -80,6 +81,7 @@ load(const Filename &file, int preprocessor) {
if (!vfs->read_file(file, result->_body, true)) {
cerr << "Could not read shader file: " << file << "\n";
result->_body = "";
result->_load_error = true;
}
_load_table[key] = result;
return result;
@ -88,7 +90,7 @@ load(const Filename &file, int preprocessor) {
////////////////////////////////////////////////////////////////////
// Function: Shader::make
// Access: Published, Static
// Description:
// Description:
////////////////////////////////////////////////////////////////////
CPT(Shader) Shader::
make(const string &body, int preprocessor) {
@ -116,7 +118,7 @@ make(const string &body, int preprocessor) {
// shader text in Cg, GLSL, HLSL, or whatever. The
// macro preprocessor will be able to query the RenderState
// and generate different shader code for different states.
//
//
// The macroexpansion of the shader is stored in an object
// of class ShaderExpansion. This is somewhat expensive
// to generate, so the ShaderExpansion is cached inside the
@ -153,7 +155,7 @@ macroexpand(const RenderState *context) const {
////////////////////////////////////////////////////////////////////
// Function: Shader::register_with_read_factory
// Access: Public, Static
// Description:
// Description:
////////////////////////////////////////////////////////////////////
void Shader::
register_with_read_factory() {

20
panda/src/pgraph/shader.h
View File

@ -28,7 +28,7 @@ class ShaderExpansion;
////////////////////////////////////////////////////////////////////
// Class : Shader
// Description :
// Description :
////////////////////////////////////////////////////////////////////
class EXPCL_PANDA Shader: public TypedWritableReferenceCount {
@ -36,37 +36,39 @@ PUBLISHED:
static CPT(Shader) load(const Filename &file, int preprocessor=0);
static CPT(Shader) load(const string &file, int preprocessor=0);
static CPT(Shader) make(const string &body, int preprocessor=0);
INLINE const string &get_name() const;
INLINE const Filename &get_file() const;
INLINE const string &get_body() const;
INLINE int get_preprocessor() const;
INLINE bool get_loaded() const;
INLINE bool get_load_error() const;
PT(ShaderExpansion) macroexpand(const RenderState *context) const;
public:
Shader();
~Shader();
private:
string _name;
Filename _file;
string _body;
bool _loaded;
bool _load_error;
int _preprocessor;
PT(ShaderExpansion) _fixed_expansion;
typedef pair < Filename, int > LoadTableKey;
typedef pair < string, int > MakeTableKey;
typedef pmap < LoadTableKey , Shader * > LoadTable;
typedef pmap < MakeTableKey , Shader * > MakeTable;
static LoadTable _load_table;
static MakeTable _make_table;
public:
static void register_with_read_factory();