]> git.tdb.fi Git - libs/gl.git/blobdiff - source/programbuilder.cpp
Alias texture lookup functions of all dimensionalities
[libs/gl.git] / source / programbuilder.cpp
index 3fb9094c180975111f4f43bb7a2e0f7beb1eeb9d..de1fb1604db2ea5dcd77c20a2fbf036f18fe3894 100644 (file)
@@ -44,7 +44,7 @@ Naming conventions:
 anything that might need them. */
 const ProgramBuilder::VariableDefinition ProgramBuilder::standard_variables[] =
 {
-       { FRAGMENT, "gl_FragColor", "vec4", "frag_color", "g" },
+       { FRAGMENT, "gl_FragColor", "vec4", "frag_color", 0 },
        { FRAGMENT, "frag_color", "vec4", "basic_color", "!e!l" },
        { FRAGMENT, "frag_color", "vec4", "vec4(rgb_surface, surface_alpha)", "!el" },
        { FRAGMENT, "frag_color", "vec4", "vec4(rgb_surface+rgb_reflection, surface_alpha)", "e" },
@@ -134,8 +134,8 @@ const ProgramBuilder::VariableDefinition ProgramBuilder::standard_variables[] =
        { UNIFORM, "environment", "samplerCube", 0, 0 },
        { UNIFORM, "EnvMap::env_eye_matrix", "mat3", 0, 0 },
        { UNIFORM, "Material::reflectivity", "float", 0, 0 },
-       { UNIFORM, "Transform::eye_obj_matrix", "mat4", "gl_ModelViewMatrix", 0 },
-       { UNIFORM, "Transform::eye_obj_normal_matrix", "mat3", "gl_NormalMatrix", 0 },
+       { UNIFORM, "eye_obj_matrix", "mat4", "gl_ModelViewMatrix", 0 },
+       { UNIFORM, "eye_obj_normal_matrix", "mat3", "gl_NormalMatrix", 0 },
        { UNIFORM, "Transform::projection_matrix", "mat4", "gl_ProjectionMatrix", 0 },
        { UNIFORM, "ShadowMap::shd_eye_matrix", "mat4", 0, 0 },
        { UNIFORM, "Lighting::light_sources", "LightSourceParameters[MAX_LIGHTS]", "gl_LightSource[i]", 0 },
@@ -236,9 +236,12 @@ ProgramBuilder::ProgramBuilder(const StandardFeatures &f):
                }
        }
 
-       if((get_gl_api()==OPENGL && !features.legacy) || (get_gl_api()==OPENGL_ES2 && get_glsl_version()>=Version(3, 0)))
+       if(!features.legacy)
        {
+               aliases["texture1D"] = "texture";
                aliases["texture2D"] = "texture";
+               aliases["texture3D"] = "texture";
+               aliases["textureCube"] = "texture";
                aliases["shadow2D"] = "texture";
        }
        else
@@ -345,8 +348,9 @@ void ProgramBuilder::add_shaders(Program &prog) const
        for(list<ShaderVariable>::iterator i=variables.end(); i!=variables.begin(); )
                (--i)->resolve_array(features);
 
+       bool legacy_variables = evaluate_flags("g");
        for(list<ShaderVariable *>::const_iterator i=resolved_vars.begin(); i!=resolved_vars.end(); ++i)
-               (*i)->check_inline(features.legacy, !optimize);
+               (*i)->check_inline(legacy_variables, !optimize);
 
        prog.attach_shader_owned(new VertexShader(create_source(resolved_vars, VERTEX)));
        prog.attach_shader_owned(new FragmentShader(create_source(resolved_vars, FRAGMENT)));
@@ -376,7 +380,6 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
 {
        string source;
 
-       bool legacy_qualifiers = features.legacy || (get_gl_api()==OPENGL_ES2 && !(get_glsl_version()>=Version(3, 0)));
        bool use_blocks = !features.legacy && ARB_uniform_buffer_object;
 
        if(!features.legacy)
@@ -394,6 +397,9 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
                }
        }
 
+       if(get_gl_api()==OPENGL_ES2)
+               source += "precision mediump float;\n";
+
        set<const VariableDefinition *> declared_types;
        set<string> uniform_blocks;
        for(list<ShaderVariable *>::const_iterator i=variables.begin(); i!=variables.end(); ++i)
@@ -426,17 +432,17 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
                if(!(*i)->resolved_name.compare(0, 3, "gl_"))
                        continue;
 
-               InterfaceFlags interface = (*i)->get_interface_flags(scope);
+               InterfaceFlags iface = (*i)->get_interface_flags(scope);
 
-               if(interface&INPUT)
+               if(iface&INPUT)
                {
-                       const char *qualifier = (legacy_qualifiers ? scope==VERTEX ? "attribute" : "varying" : "in");
+                       const char *qualifier = (features.legacy ? scope==VERTEX ? "attribute" : "varying" : "in");
                        source += format("%s %s;\n", qualifier, (*i)->create_declaration(interfaces[scope-1]));
                }
 
-               if(interface&OUTPUT)
+               if(iface&OUTPUT)
                {
-                       const char *qualifier = (legacy_qualifiers ? "varying" : "out");
+                       const char *qualifier = (features.legacy ? "varying" : "out");
                        source += format("%s %s;\n", qualifier, (*i)->create_declaration(interfaces[scope]));
                }
        }
@@ -453,8 +459,8 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
                        Output variables are already declared. */
                        for(list<ShaderVariable *>::const_iterator j=loop_vars.begin(); j!=loop_vars.end(); ++j)
                        {
-                               InterfaceFlags interface = (*j)->get_interface_flags(scope);
-                               if(!(*j)->in_loop && !(interface&OUTPUT))
+                               InterfaceFlags iface = (*j)->get_interface_flags(scope);
+                               if(!(*j)->in_loop && !(iface&OUTPUT))
                                        source += format("\t%s;\n", (*j)->create_declaration());
                        }
 
@@ -476,8 +482,8 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
                                        source += format("\t\t%s %s %s;\n", decl, oper, create_expression(**j, "i"));
                                }
 
-                               InterfaceFlags interface = (*j)->get_interface_flags(scope);
-                               if(interface&OUTPUT)
+                               InterfaceFlags iface = (*j)->get_interface_flags(scope);
+                               if(iface&OUTPUT)
                                {
                                        string expr = ((*j)->inlined ? create_expression(**j, "i") : (*j)->resolved_name+"[i]");
                                        source += format("\t\t%c_%s[i] = %s;\n", interfaces[scope], (*j)->resolved_name, expr);
@@ -488,11 +494,11 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
                        loop_vars.clear();
                }
 
-               InterfaceFlags interface = (*i)->get_interface_flags(scope);
+               InterfaceFlags iface = (*i)->get_interface_flags(scope);
 
                if((*i)->array_size>1)
                {
-                       if((*i)->variable->scope==scope || (interface&OUTPUT))
+                       if((*i)->variable->scope==scope || (iface&OUTPUT))
                        {
                                loop_size = (*i)->array_size;
                                loop_vars.push_back(*i);
@@ -502,11 +508,11 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
 
                if((*i)->variable->scope==scope && !(*i)->inlined)
                {
-                       string decl = ((interface&GOAL) ? (*i)->resolved_name : (*i)->create_declaration());
+                       string decl = ((iface&GOAL) ? (*i)->resolved_name : (*i)->create_declaration());
                        source += format("\t%s = %s;\n", decl, create_expression(**i));
                }
 
-               if((interface&(OUTPUT|GOAL))==OUTPUT)
+               if((iface&(OUTPUT|GOAL))==OUTPUT)
                {
                        string expr = ((*i)->inlined ? create_expression(**i) : (*i)->resolved_name);
                        source += format("\t%c_%s = %s;\n", interfaces[scope], (*i)->resolved_name, expr);
@@ -717,9 +723,13 @@ ProgramBuilder::StandardFeatures::StandardFeatures():
        specular(false),
        normalmap(false),
        shadow(false),
-       reflection(false),
-       legacy(get_gl_api()==OPENGL && !(get_glsl_version()>=Version(1, 30)))
-{ }
+       reflection(false)
+{
+       if(get_gl_api()==OPENGL_ES2)
+               legacy = !(get_glsl_version()>=Version(3, 0));
+       else
+               legacy = !(get_glsl_version()>=Version(1, 30));
+}
 
 string ProgramBuilder::StandardFeatures::create_flags() const
 {
@@ -742,7 +752,7 @@ string ProgramBuilder::StandardFeatures::create_flags() const
                flags += 's';
        if(reflection)
                flags += 'e';
-       if(legacy)
+       if(legacy && get_gl_api()==OPENGL)
                flags += 'g';
 
        return flags;
@@ -998,7 +1008,7 @@ string ProgramBuilder::ShaderVariable::create_type_declaration() const
        throw invalid_variable_definition("invalid typedef");
 }
 
-string ProgramBuilder::ShaderVariable::create_declaration(char interface, bool loop) const
+string ProgramBuilder::ShaderVariable::create_declaration(char iface, bool loop) const
 {
        if(variable->scope==UNIFORM && !array_subscript.empty())
        {
@@ -1011,8 +1021,8 @@ string ProgramBuilder::ShaderVariable::create_declaration(char interface, bool l
        if(!array_sum && array_size>1 && !loop)
                array = format("[%d]", array_size);
 
-       if(interface)
-               return format("%s %c_%s%s", variable->type, interface, resolved_name, array);
+       if(iface)
+               return format("%s %c_%s%s", variable->type, iface, resolved_name, array);
        else
                return format("%s %s%s", variable->type, resolved_name, array);
 }
@@ -1020,11 +1030,11 @@ string ProgramBuilder::ShaderVariable::create_declaration(char interface, bool l
 string ProgramBuilder::ShaderVariable::create_replacement(VariableScope from_scope, const char *loop) const
 {
        string replacement = resolved_name;
-       InterfaceFlags interface = NO_INTERFACE;
+       InterfaceFlags iface = NO_INTERFACE;
        if(variable)
        {
-               interface = get_interface_flags(from_scope);
-               if((interface&INPUT) && interfaces[from_scope-1])
+               iface = get_interface_flags(from_scope);
+               if((iface&INPUT) && interfaces[from_scope-1])
                        replacement = format("%c_%s", interfaces[from_scope-1], replacement);
                else if(inlined)
                {