]> git.tdb.fi Git - libs/gl.git/blobdiff - source/programbuilder.cpp
Use texture() instead of texture2D() in non-legacy mode
[libs/gl.git] / source / programbuilder.cpp
index d73cfff48bc2146750b96f5f3d0ab7c6ef59b445..8215220081fd2cb6a32a543877bd208e3823fc7f 100644 (file)
@@ -1,6 +1,7 @@
 #include <algorithm>
 #include <cstring>
 #include <set>
+#include <msp/gl/extensions/arb_uniform_buffer_object.h>
 #include <msp/strings/format.h>
 #include <msp/strings/utils.h>
 #include "extension.h"
@@ -57,21 +58,22 @@ const ProgramBuilder::VariableDefinition ProgramBuilder::standard_variables[] =
        { FRAGMENT, "rgb_surface", "vec3", "rgb_lit_surface", "l" },
        { FRAGMENT, "rgb_unlit_surface", "vec3", "basic_color.rgb", "!s" },
        { FRAGMENT, "rgb_unlit_surface", "vec3", "basic_color.rgb*l_shadow", "s" },
-       { FRAGMENT, "rgb_lit_surface", "vec3", "rgb_illumination_diffuse", "!m" },
+       { FRAGMENT, "rgb_lit_surface", "vec3", "rgb_illumination_diffuse", "!m!t" },
+       { FRAGMENT, "rgb_lit_surface", "vec3", "rgb_illumination_diffuse*diffuse_sample.rgb", "!mt" },
        { FRAGMENT, "rgb_lit_surface", "vec3", "rgb_surface_ambient+rgb_surface_diffuse", "m!p" },
        { FRAGMENT, "rgb_lit_surface", "vec3", "rgb_surface_ambient+rgb_surface_diffuse+rgb_surface_specular", "mp" },
 
        { FRAGMENT, "surface_alpha", "float", "basic_color.a", "!m" },
        { FRAGMENT, "surface_alpha", "float", "basic_color.a", "m!l" },
        { FRAGMENT, "surface_alpha", "float", "material.diffuse.a", "ml!t" },
-       { FRAGMENT, "surface_alpha", "float", "material.diffuse.a*tex_sample.a", "mlt" },
+       { FRAGMENT, "surface_alpha", "float", "material.diffuse.a*diffuse_sample.a", "mlt" },
        { FRAGMENT, "basic_color", "vec4", "vec4(1.0)", "!m!t" },
-       { FRAGMENT, "basic_color", "vec4", "tex_sample", "!mt" },
+       { FRAGMENT, "basic_color", "vec4", "diffuse_sample", "!mt" },
        { FRAGMENT, "basic_color", "vec4", "color", "m!t" },
-       { FRAGMENT, "basic_color", "vec4", "color*tex_sample", "mt" },
+       { FRAGMENT, "basic_color", "vec4", "color*diffuse_sample", "mt" },
 
        { FRAGMENT, "rgb_surface_ambient", "vec3", "rgb_illumination_ambient*material.ambient.rgb", "!t" },
-       { FRAGMENT, "rgb_surface_ambient", "vec3", "rgb_illumination_ambient*material.ambient.rgb*tex_sample.rgb", "t" },
+       { FRAGMENT, "rgb_surface_ambient", "vec3", "rgb_illumination_ambient*material.ambient.rgb*diffuse_sample.rgb", "t" },
        { FRAGMENT, "rgb_illumination_ambient", "vec3", "ambient_color.rgb", "!y" },
        { FRAGMENT, "rgb_illumination_ambient", "vec3", "ambient_color.rgb+l_skylight*sky_color.rgb", "y" },
        { FRAGMENT, "l_skylight", "float", "dot(n_zzz_normal, zzz_sky_dir)*0.5+0.5", 0 },
@@ -86,7 +88,7 @@ const ProgramBuilder::VariableDefinition ProgramBuilder::standard_variables[] =
        { FRAGMENT, "l_specular[i]", "float", "pow(max(dot(n_zzz_half_vec[i], n_zzz_normal), 0.0), material.shininess)", 0 },
 
        { FRAGMENT, "rgb_surface_diffuse", "vec3", "rgb_illumination_diffuse*material.diffuse.rgb", "!t" },
-       { FRAGMENT, "rgb_surface_diffuse", "vec3", "rgb_illumination_diffuse*material.diffuse.rgb*tex_sample.rgb", "t" },
+       { FRAGMENT, "rgb_surface_diffuse", "vec3", "rgb_illumination_diffuse*material.diffuse.rgb*diffuse_sample.rgb", "t" },
        { FRAGMENT, "rgb_illumination_diffuse", "vec3", "rgb_light_diffuse", "!s" },
        { FRAGMENT, "rgb_illumination_diffuse", "vec3", "rgb_light_diffuse*l_shadow", "s" },
        { FRAGMENT, "rgb_light_diffuse[i]", "vec3", "l_diffuse[i]*light_sources[i].diffuse.rgb", 0 },
@@ -101,11 +103,10 @@ const ProgramBuilder::VariableDefinition ProgramBuilder::standard_variables[] =
        { FRAGMENT, "n_tbn_normal", "vec3", "normal_sample*2.0-1.0", "n" },
        { FRAGMENT, "n_eye_normal", "vec3", "normalize(eye_normal)", "!n" },
        { FRAGMENT, "normal_sample", "vec3", "texture2D(normalmap, texture_coord).xyz", 0 },
-       { FRAGMENT, "tex_sample", "vec4", "texture2D(texture, texture_coord)", 0 },
+       { FRAGMENT, "diffuse_sample", "vec4", "texture2D(diffusemap, texture_coord)", 0 },
 
        { VERTEX, "gl_Position", "vec4", "projection_matrix*eye_vertex", 0 },
-       { VERTEX, "shd_vertex", "vec3", "vec3(dot(eye_vertex, gl_EyePlaneS[shadow_unit]), dot(eye_vertex, gl_EyePlaneT[shadow_unit]), dot(eye_vertex, gl_EyePlaneR[shadow_unit]))", "g" },
-       { VERTEX, "shd_vertex", "vec3", "(shd_eye_matrix*eye_vertex).xyz", "!g" },
+       { VERTEX, "shd_vertex", "vec3", "(shd_eye_matrix*eye_vertex).xyz", 0 },
        { VERTEX, "tbn_sky_dir", "vec3", "eye_sky_dir*eye_tbn_matrix", "n" },
        { VERTEX, "tbn_light_dir[i]", "vec3", "eye_light_dir[i]*eye_tbn_matrix", 0 },
        { VERTEX, "eye_light_dir[i]", "vec3", "normalize(eye_light_position[i].xyz-eye_vertex.xyz*eye_light_position[i].w)", 0 },
@@ -126,24 +127,23 @@ const ProgramBuilder::VariableDefinition ProgramBuilder::standard_variables[] =
        { ATTRIBUTE, "tangent", "vec3", 0, 0 },
        { ATTRIBUTE, "binormal", "vec3", 0, 0 },
 
-       { UNIFORM, "shadow_unit", "int", 0, 0 },
-       { UNIFORM, "texture", "sampler2D", 0, 0 },
+       { UNIFORM, "diffusemap", "sampler2D", 0, 0 },
        { UNIFORM, "shadow", "sampler2DShadow", 0, 0 },
-       { UNIFORM, "shadow_darkness", "float", 0, 0 },
+       { UNIFORM, "ShadowMap::shadow_darkness", "float", 0, 0 },
        { UNIFORM, "normalmap", "sampler2D", 0, 0 },
        { UNIFORM, "environment", "samplerCube", 0, 0 },
-       { UNIFORM, "env_eye_matrix", "mat3", 0, 0 },
-       { UNIFORM, "reflectivity", "float", 0, 0 },
-       { UNIFORM, "eye_obj_matrix", "mat4", "gl_ModelViewMatrix", 0 },
-       { UNIFORM, "eye_obj_normal_matrix", "mat3", "gl_NormalMatrix", 0 },
-       { UNIFORM, "projection_matrix", "mat4", "gl_ProjectionMatrix", 0 },
-       { UNIFORM, "shd_eye_matrix", "mat4", 0, 0 },
-       { UNIFORM, "light_sources", "LightSourceParameters[MAX_LIGHTS]", "gl_LightSource[i]", 0 },
-       { UNIFORM, "ambient_color", "vec4", 0, 0 },
-       { UNIFORM, "sky_color", "vec4", 0, 0 },
-       { UNIFORM, "eye_sky_dir", "vec3", 0, 0 },
-       { UNIFORM, "horizon_limit", "float", 0, 0 },
-       { UNIFORM, "material", "MaterialParameters", "gl_FrontMaterial", 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, "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 },
+       { UNIFORM, "Lighting::ambient_color", "vec4", "gl_LightModel.ambient", 0 },
+       { UNIFORM, "Lighting::sky_color", "vec4", 0, 0 },
+       { UNIFORM, "Lighting::eye_sky_dir", "vec3", 0, 0 },
+       { UNIFORM, "Lighting::horizon_limit", "float", 0, 0 },
+       { UNIFORM, "Material::material", "MaterialParameters", "gl_FrontMaterial", 0 },
 
        { TYPE, "LightSourceParameters", "struct { vec4 position; vec4 diffuse; vec4 specular; }", "gl_LightSourceParameters", 0 },
        { TYPE, "MaterialParameters", "struct { vec4 ambient; vec4 diffuse; vec4 specular; float shininess; }", "gl_MaterialParameters", 0 },
@@ -235,6 +235,12 @@ ProgramBuilder::ProgramBuilder(const StandardFeatures &f):
                        start = semicolon+1;
                }
        }
+
+       if((get_gl_api()==OPENGL && !features.legacy) || (get_gl_api()==OPENGL_ES2 && get_glsl_version()>=Version(3, 0)))
+       {
+               aliases["texture2D"] = "texture";
+               aliases["shadow2D"] = "texture";
+       }
 }
 
 void ProgramBuilder::set_optimize(bool o)
@@ -285,6 +291,8 @@ void ProgramBuilder::add_shaders(Program &prog) const
                        continue;
                }
 
+               const char *def_uq_name = unqualified_name(def->name);
+
                // See if this variable can satisfy any unresolved variables
                ShaderVariable *last_resolved = 0;
                for(list<ShaderVariable>::iterator j=variables.begin(); j!=variables.end(); ++j)
@@ -292,7 +300,7 @@ void ProgramBuilder::add_shaders(Program &prog) const
                        if(j->variable)
                                continue;
 
-                       if(!name_match(def->name, j->resolved_name.c_str()))
+                       if(!name_match(def_uq_name, j->resolved_name.c_str()))
                                continue;
 
                        if(last_resolved)
@@ -343,7 +351,10 @@ void ProgramBuilder::add_shaders(Program &prog) const
 
        if(!features.legacy)
        {
-               prog.bind_fragment_data(0, "frag_color");
+               // OpenGL ES does not support binding fragment shader outputs
+               if(get_gl_api()!=OPENGL_ES2)
+                       prog.bind_fragment_data(0, "frag_color");
+
                prog.bind_attribute(VERTEX4, "vertex");
                if(features.lighting)
                        prog.bind_attribute(NORMAL3, "normal");
@@ -363,10 +374,25 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
 {
        string source;
 
+       bool use_blocks = !features.legacy && ARB_uniform_buffer_object;
+
        if(!features.legacy)
-               source += "#version 130\n";
+       {
+               if(get_gl_api()==OPENGL_ES2)
+               {
+                       if(use_blocks)
+                               source += "#version 300 es\n";
+               }
+               else
+               {
+                       source += "#version 130\n";
+                       if(use_blocks)
+                               source += "#extension GL_ARB_uniform_buffer_object: require\n";
+               }
+       }
 
        set<const VariableDefinition *> declared_types;
+       set<string> uniform_blocks;
        for(list<ShaderVariable *>::const_iterator i=variables.begin(); i!=variables.end(); ++i)
                if((*i)->variable->scope==UNIFORM && (*i)->is_referenced_from(scope) && !(*i)->inlined)
                {
@@ -376,9 +402,21 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
                                declared_types.insert((*i)->type);
                        }
 
-                       source += format("uniform %s;\n", (*i)->create_declaration());
+                       if(!(*i)->resolved_block.empty() && use_blocks)
+                               uniform_blocks.insert((*i)->resolved_block);
+                       else
+                               source += format("uniform %s;\n", (*i)->create_declaration());
                }
 
+       for(set<string>::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
+       {
+               source += format("uniform %s\n{\n", *i);
+               for(list<ShaderVariable *>::const_iterator j=variables.begin(); j!=variables.end(); ++j)
+                       if((*j)->resolved_block==*i)
+                               source += format("\t%s;\n", (*j)->create_declaration());
+               source += "};\n";
+       }
+
        /* Interface variables need to have global declarations. */
        for(list<ShaderVariable *>::const_iterator i=variables.begin(); i!=variables.end(); ++i)
        {
@@ -432,13 +470,13 @@ string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, Va
                                                        decl += "[i]";
                                        }
                                        const char *oper = ((*j)->array_sum ? "+=" : "=");
-                                       source += format("\t\t%s %s %s;\n", decl, oper, (*j)->create_expression("i"));
+                                       source += format("\t\t%s %s %s;\n", decl, oper, create_expression(**j, "i"));
                                }
 
                                InterfaceFlags interface = (*j)->get_interface_flags(scope);
                                if(interface&OUTPUT)
                                {
-                                       string expr = ((*j)->inlined ? (*j)->create_expression("i") : (*j)->resolved_name+"[i]");
+                                       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);
                                }
                        }
@@ -462,12 +500,12 @@ 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());
-                       source += format("\t%s = %s;\n", decl, (*i)->create_expression());
+                       source += format("\t%s = %s;\n", decl, create_expression(**i));
                }
 
                if((interface&(OUTPUT|GOAL))==OUTPUT)
                {
-                       string expr = ((*i)->inlined ? (*i)->create_expression() : (*i)->resolved_name);
+                       string expr = ((*i)->inlined ? create_expression(**i) : (*i)->resolved_name);
                        source += format("\t%c_%s = %s;\n", interfaces[scope], (*i)->resolved_name, expr);
                }
        }
@@ -504,6 +542,14 @@ bool ProgramBuilder::evaluate_flags(const char *flags) const
        return cond;
 }
 
+const char *ProgramBuilder::unqualified_name(const char *name)
+{
+       for(const char *p=name; *p; ++p)
+               if(*p==':' && *++p==':')
+                       name = p+1;
+       return name;
+}
+
 ProgramBuilder::MatchType ProgramBuilder::name_match(const char *n1, const char *n2, const char **space)
 {
        int i = 0;
@@ -624,12 +670,19 @@ string ProgramBuilder::replace_identifiers(const char *expression, const map<str
        return result;
 }
 
+string ProgramBuilder::create_expression(const ShaderVariable &var, const char *loop) const
+{
+       string expr = var.create_expression(loop);
+       return replace_identifiers(expr.c_str(), aliases);
+}
+
 
 ProgramBuilder::StandardFeatures::StandardFeatures():
        texture(false),
        material(false),
        lighting(false),
        max_lights(1),
+       skylight(false),
        specular(false),
        normalmap(false),
        shadow(false),
@@ -686,7 +739,11 @@ void ProgramBuilder::ShaderVariable::resolve(const VariableDefinition &var)
 {
        variable = &var;
        const char *space = 0;
-       MatchType match = name_match(var.name, resolved_name.c_str(), &space);
+       const char *var_uq_name = unqualified_name(variable->name);
+       MatchType match = name_match(var_uq_name, resolved_name.c_str(), &space);
+
+       if(var_uq_name!=variable->name)
+               resolved_block.assign(variable->name, var_uq_name-2);
 
        if(match==FUZZY)
                resolve_space(string(space, 3));