From cea3c333797cadd9629aefaa5b82243173a02d16 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 10 Oct 2007 06:58:39 +0000
Subject: [PATCH] Make Material::apply const Allow creating meshes runtime Add
 Program::uniform4 Add arithmetic operators for Color Use glXGetProcAddressARB
 to hopefully work on olfder glX implementations

---
 source/batch.cpp     |  4 +++-
 source/batch.h       |  2 +-
 source/color.h       |  4 ++++
 source/extension.cpp |  2 +-
 source/material.cpp  |  2 +-
 source/material.h    |  2 +-
 source/mesh.cpp      | 11 +++++++++++
 source/mesh.h        |  3 +++
 source/program.cpp   |  5 +++++
 source/program.h     |  1 +
 10 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/source/batch.cpp b/source/batch.cpp
index d650fda8..df4e2fb8 100644
--- a/source/batch.cpp
+++ b/source/batch.cpp
@@ -19,7 +19,7 @@ Batch::Batch(PrimitiveType t):
 	max_index(0)
 { }
 
-void Batch::append(uint i)
+Batch &Batch::append(uint i)
 {
 	if(indices.empty())
 		min_index=max_index=i;
@@ -29,6 +29,8 @@ void Batch::append(uint i)
 		max_index=max(max_index, i);
 	}
 	indices.push_back(i);
+
+	return *this;
 }
 
 void Batch::append(const vector<uint> &ind)
diff --git a/source/batch.h b/source/batch.h
index aace6528..237995dc 100644
--- a/source/batch.h
+++ b/source/batch.h
@@ -31,7 +31,7 @@ public:
 	};
 
 	Batch(PrimitiveType t);
-	void append(uint);
+	Batch &append(uint);
 	void append(const std::vector<uint> &);
 	void draw() const;
 private:
diff --git a/source/color.h b/source/color.h
index 0fc303a2..d3710a9d 100644
--- a/source/color.h
+++ b/source/color.h
@@ -21,6 +21,10 @@ struct Color
 	Color(float v): r(v), g(v), b(v), a(1) { }
 	Color(float r_, float g_, float b_): r(r_), g(g_), b(b_), a(1) { }
 	Color(float r_, float g_, float b_, float a_): r(r_), g(g_), b(b_), a(a_) { }
+	Color operator*(float f) const { return Color(r*f, g*f, b*f, a); }
+	Color operator+(const Color &c) const { return Color(r+c.r, g+c.g, b+c.g, 1-(1-a)*(1-c.a)); }
+	bool operator==(const Color &c) const { return (r==c.r && b==c.b && g==c.g && a==c.a); }
+	bool operator!=(const Color &c) const { return !operator==(c); }
 };
 
 } // namespace GL
diff --git a/source/extension.cpp b/source/extension.cpp
index 1a603def..2d57d1d1 100644
--- a/source/extension.cpp
+++ b/source/extension.cpp
@@ -56,7 +56,7 @@ void require_extension(const string &ext)
 ExtFunc *get_proc_address(const string &name)
 {
 #ifndef WIN32
-	return glXGetProcAddress(reinterpret_cast<const GLubyte *>(name.c_str()));
+	return glXGetProcAddressARB(reinterpret_cast<const GLubyte *>(name.c_str()));
 #endif
 }
 
diff --git a/source/material.cpp b/source/material.cpp
index 25c21ff2..58cd15cb 100644
--- a/source/material.cpp
+++ b/source/material.cpp
@@ -43,7 +43,7 @@ void Material::set_shininess(float s)
 	shininess=s;
 }
 
-void Material::apply()
+void Material::apply() const
 {
 	glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, &ambient.r);
 	glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, &diffuse.r);
diff --git a/source/material.h b/source/material.h
index b2ea995e..babf2676 100644
--- a/source/material.h
+++ b/source/material.h
@@ -29,7 +29,7 @@ public:
 	void set_specular(const Color &s);
 	void set_emission(const Color &e);
 	void set_shininess(float s);
-	void apply();
+	void apply() const;
 };
 
 } // namespace GL
diff --git a/source/mesh.cpp b/source/mesh.cpp
index 4e671e03..8d039977 100644
--- a/source/mesh.cpp
+++ b/source/mesh.cpp
@@ -18,6 +18,17 @@ Mesh::Mesh():
 	vertices.use_vertex_buffer();
 }
 
+Mesh::Mesh(VertexFormat f):
+	vertices(f)
+{
+	vertices.use_vertex_buffer();
+}
+
+void Mesh::add_batch(const Batch &b)
+{
+	batches.push_back(b);
+}
+
 void Mesh::draw() const
 {
 	vertices.apply();
diff --git a/source/mesh.h b/source/mesh.h
index 648fb72c..7c80d322 100644
--- a/source/mesh.h
+++ b/source/mesh.h
@@ -30,6 +30,9 @@ public:
 	};
 
 	Mesh();
+	Mesh(VertexFormat f);
+	RefPtr<VertexArrayBuilder> modify_vertices() { return vertices.modify(); }
+	void add_batch(const Batch &b);
 	void draw() const;
 private:
 	VertexArray vertices;
diff --git a/source/program.cpp b/source/program.cpp
index f34133fa..f0fffb1f 100644
--- a/source/program.cpp
+++ b/source/program.cpp
@@ -144,6 +144,11 @@ void Program::uniform(int i, float x, float y, float z, float w)
 	glUniform4fARB(i, x, y, z, w);
 }
 
+void Program::uniform4(int i, const float *v)
+{
+	glUniform4fvARB(i, 1, v);
+}
+
 void Program::uniform_matrix4(int i, const float *v)
 {
 	glUniformMatrix4fvARB(i, 1, false, v);
diff --git a/source/program.h b/source/program.h
index f007fb3a..af249ede 100644
--- a/source/program.h
+++ b/source/program.h
@@ -64,6 +64,7 @@ public:
 	void uniform(int, float, float);
 	void uniform(int, float, float, float);
 	void uniform(int, float, float, float, float);
+	void uniform4(int, const float *);
 	void uniform_matrix4(int, const float *);
 
 	static void unbind();
-- 
2.43.0