X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fprogram.cpp;h=ef1f4c8a63fc0696f363bf21e10b60cb8fe4b80f;hb=b617c5d7b5283ad260a77f01e42e6170cabbc03d;hp=1d08270fd50aca7abd45e18f9660213e09a24227;hpb=85facfb688035b5bbc9a3a87d080582fbf34930b;p=libs%2Fgl.git

diff --git a/source/program.cpp b/source/program.cpp
index 1d08270f..ef1f4c8a 100644
--- a/source/program.cpp
+++ b/source/program.cpp
@@ -5,7 +5,11 @@ Copyright © 2007 Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
-#define GL_GLEXT_PROTOTYPES
+#include <algorithm>
+#include "arb_shader_objects.h"
+#include "arb_vertex_shader.h"
+#include "except.h"
+#include "extension.h"
 #include "program.h"
 #include "shader.h"
 
@@ -14,65 +18,157 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-Program::Program()
+Program::Program():
+	del_shaders(false)
 {
-	id=glCreateProgram();
+	init();
+}
+
+Program::Program(const string &vert, const string &frag):
+	del_shaders(true)
+{
+	init();
+
+	attach_shader(*new Shader(VERTEX_SHADER, vert));
+	attach_shader(*new Shader(FRAGMENT_SHADER, frag));
+	link();
+}
+
+void Program::init()
+{
+	static RequireExtension _ext("GL_ARB_shader_objects");
+
+	linked = false;
+	id = glCreateProgramObjectARB();
 }
 
 Program::~Program()
 {
-	glDeleteProgram(id);
+	if(del_shaders)
+	{
+		for(list<Shader *>::iterator i=shaders.begin(); i!=shaders.end(); ++i)
+			delete *i;
+	}
+	glDeleteObjectARB(id);
 }
 
 void Program::attach_shader(Shader &shader)
 {
 	if(find(shaders.begin(), shaders.end(), &shader)==shaders.end())
 	{
-		glAttachShader(id, shader.get_id());
+		glAttachObjectARB(id, shader.get_id());
 		shaders.push_back(&shader);
 	}
 }
 
 void Program::detach_shader(Shader &shader)
 {
-	list<Shader *>::iterator i=remove(shaders.begin(), shaders.end(), &shader);
+	list<Shader *>::iterator i = remove(shaders.begin(), shaders.end(), &shader);
 	if(i!=shaders.end())
 	{
 		shaders.erase(i, shaders.end());
-		glDetachShader(id, shader.get_id());
+		glDetachObjectARB(id, shader.get_id());
 	}
 }
 
-void Program::bind_attribute(int index, const string &name)
+void Program::set_del_shaders(bool ds)
 {
-	glBindAttribLocation(id, index, name.c_str());
+	del_shaders = ds;
 }
 
-bool Program::link()
+void Program::bind_attribute(unsigned index, const string &name)
+{
+	static RequireExtension _ext("GL_ARB_vertex_shader");
+	glBindAttribLocationARB(id, index, name.c_str());
+}
+
+void Program::link()
 {
 	for(list<Shader *>::iterator i=shaders.begin(); i!=shaders.end(); ++i)
-		if(!(*i)->get_compiled() && !(*i)->compile())
-			return false;
+		if(!(*i)->get_compiled())
+			(*i)->compile();
 
-	glLinkProgram(id);
-	linked=get_param(GL_LINK_STATUS);
-	return linked;
+	glLinkProgramARB(id);
+	if(!(linked = get_param(GL_LINK_STATUS)))
+		throw CompileError(get_info_log());
 }
 
 int Program::get_param(GLenum param) const
 {
 	int value;
-	glGetProgramiv(id, param, &value);
+	glGetObjectParameterivARB(id, param, &value);
 	return value;
 }
 
 string Program::get_info_log() const
 {
-	sizei len=get_param(GL_INFO_LOG_LENGTH);
+	GLsizei len = get_param(GL_INFO_LOG_LENGTH);
 	char log[len+1];
-	glGetProgramInfoLog(id, len+1, reinterpret_cast<GLsizei *>(&len), log);
+	glGetInfoLogARB(id, len+1, &len, log);
 	return string(log, len);
 }
 
+void Program::bind() const
+{
+	if(!linked)
+		throw InvalidState("Program is not linked");
+
+	glUseProgramObjectARB(id);
+	cur_prog = this;
+}
+
+int Program::get_uniform_location(const string &n) const
+{
+	return glGetUniformLocationARB(id, n.c_str());
+}
+
+void Program::unbind()
+{
+	if(cur_prog)
+	{
+		glUseProgramObjectARB(0);
+		cur_prog = 0;
+	}
+}
+
+void Program::maybe_bind()
+{
+	if(cur_prog!=this)
+		bind();
+}
+
+const Program *Program::cur_prog = 0;
+
+
+Program::Loader::Loader(Program &p):
+	DataFile::ObjectLoader<Program>(p)
+{
+	obj.set_del_shaders(true);
+
+	add("vertex_shader",   &Loader::vertex_shader);
+	add("fragment_shader", &Loader::fragment_shader);
+	add("attribute",       &Loader::attribute);
+}
+
+void Program::Loader::vertex_shader(const string &src)
+{
+	obj.attach_shader(*new Shader(VERTEX_SHADER, src));
+}
+
+void Program::Loader::fragment_shader(const string &src)
+{
+	obj.attach_shader(*new Shader(FRAGMENT_SHADER, src));
+}
+
+void Program::Loader::attribute(unsigned i, const string &n)
+{
+	obj.bind_attribute(i, n);
+}
+
+void Program::Loader::finish()
+{
+	obj.link();
+}
+
 } // namespace GL
 } // namespace Msp