Move transform loading to ObjectInstance

[libs/gl.git] / source / shader.cpp

diff --git a/source/shader.cpp b/source/shader.cpp
index 61c2f0e56b0e7125bed8df5f0d9dad32c6ce736e..0c356f5f460826f7e97877881d15f35ba3db36f0 100644 (file)
--- a/source/shader.cpp
+++ b/source/shader.cpp
@@ -1,11 +1,10 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#define GL_GLEXT_PROTOTYPES
+#include <msp/gl/extensions/arb_fragment_shader.h>
+#include <msp/gl/extensions/arb_geometry_shader4.h>
+#include <msp/gl/extensions/arb_shader_objects.h>
+#include <msp/gl/extensions/arb_vertex_shader.h>
+#include <msp/io/print.h>
+#include "error.h"
+#include "misc.h"
 #include "shader.h"
 
 using namespace std;
@@ -13,25 +12,39 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-Shader::Shader(ShaderType t):
-       id(glCreateShader(t)),
-       compiled(false)
-{ }
+Shader::Shader(GLenum t)
+{
+       init(t);
+}
 
-Shader::Shader(ShaderType t, const string &src):
-       id(glCreateShader(t)),
-       compiled(false)
+Shader::Shader(GLenum t, const string &src)
 {
+       init(t);
+
        source(src);
        compile();
 }
 
+void Shader::init(GLenum t)
+{
+       compiled = false;
+
+       if(t==GL_FRAGMENT_SHADER)
+               static Require _req(ARB_fragment_shader);
+       else if(t==GL_VERTEX_SHADER)
+               static Require _req(ARB_vertex_shader);
+       else if(t==GL_GEOMETRY_SHADER)
+               static Require _req(ARB_geometry_shader4);
+
+       id = glCreateShader(t);
+}
+
 Shader::~Shader()
 {
        glDeleteShader(id);
 }
 
-void Shader::source(sizei count, const char **str, const int *len)
+void Shader::source(unsigned count, const char **str, const int *len)
 {
        glShaderSource(id, count, str, len);
 }
@@ -46,27 +59,56 @@ void Shader::source(const char *str, int len)
        source(1, &str, &len);
 }
 
-bool Shader::compile()
+void Shader::compile()
 {
        glCompileShader(id);
-       compiled=get_param(GL_COMPILE_STATUS);
-       return compiled;
-}
+       compiled = get_shader_i(id, GL_COMPILE_STATUS);
+       if(!compiled)
+               throw compile_error(get_info_log());
 
-int Shader::get_param(GLenum param) const
-{
-       int value;
-       glGetShaderiv(id, param, &value);
-       return value;
+#ifdef DEBUG
+       string info_log = get_info_log();
+       if(!info_log.empty())
+               IO::print("Shader compile info log:\n%s", info_log);
+#endif
 }
 
 string Shader::get_info_log() const
 {
-       sizei len=get_param(GL_INFO_LOG_LENGTH);
-       char log[len+1];
-       glGetShaderInfoLog(id, len+1, reinterpret_cast<GLsizei *>(&len), log);
-       return string(log, len);
+       GLsizei len = get_shader_i(id, GL_INFO_LOG_LENGTH);
+       char *buf = new char[len+1];
+       glGetShaderInfoLog(id, len+1, &len, buf);
+       string log(buf, len);
+       delete[] buf;
+       return log;
 }
 
+
+VertexShader::VertexShader():
+       Shader(GL_VERTEX_SHADER)
+{ }
+
+VertexShader::VertexShader(const string &src):
+       Shader(GL_VERTEX_SHADER, src)
+{ }
+
+
+FragmentShader::FragmentShader():
+       Shader(GL_FRAGMENT_SHADER)
+{ }
+
+FragmentShader::FragmentShader(const string &src):
+       Shader(GL_FRAGMENT_SHADER, src)
+{ }
+
+
+GeometryShader::GeometryShader():
+       Shader(GL_GEOMETRY_SHADER)
+{ }
+
+GeometryShader::GeometryShader(const string &src):
+       Shader(GL_GEOMETRY_SHADER, src)
+{ }
+
 } // namespace GL
 } // namespace Msp