using namespace std;
-namespace {
-
-const char *standard_vertex_src[] =
-{
- "s", "uniform int shadow_unit;\n",
- "n", "attribute vec3 tangent;\n",
- "n", "attribute vec3 binormal;\n",
- "t|n", "varying vec2 v_texcoord;\n",
- "s", "varying vec3 v_shadowcoord;\n",
- "!lm", "varying vec4 v_color;\n",
- "l!n", "varying vec3 v_normal;\n",
- "l", "varying vec3 v_light_dir;\n",
- "p|e", "varying vec3 v_eye_dir;\n",
- "r", "vec4 transform_vertex(vec4);\n",
- "lr", "vec3 transform_normal(vec3);\n",
- 0, "void main()\n",
- 0, "{\n",
- "r", "\tvec4 eye_pos = transform_vertex(gl_Vertex);\n",
- "!r", "\tvec4 eye_pos = gl_ModelViewMatrix*gl_Vertex;\n",
- 0, "\tgl_Position = gl_ProjectionMatrix*eye_pos;\n",
- "lr", "\tvec3 eye_normal = transform_normal(gl_Normal);\n",
- "l!r", "\tvec3 eye_normal = gl_NormalMatrix*gl_Normal;\n",
- "l!n", "\tv_normal = eye_normal;\n",
- "nr", "\tvec3 eye_tangent = transform_normal(tangent);\n",
- "n!r", "\tvec3 eye_tangent = gl_NormalMatrix*tangent;\n",
- "nr", "\tvec3 eye_binormal = transform_normal(binormal);\n",
- "n!r", "\tvec3 eye_binormal = gl_NormalMatrix*binormal;\n",
- "l", "\tvec3 eye_light_dir = normalize(gl_LightSource[0].position.xyz-eye_pos.xyz*gl_LightSource[0].position.w);\n",
- "n", "\tv_light_dir = vec3(dot(eye_tangent, eye_light_dir), dot(eye_binormal, eye_light_dir), dot(eye_normal, eye_light_dir));\n",
- "l!n", "\tv_light_dir = eye_light_dir;\n",
- "p|e", "\tvec3 eye_dir = -normalize(eye_pos.xyz);\n",
- "p|en", "\tv_eye_dir = vec3(dot(eye_tangent, eye_dir), dot(eye_binormal, eye_dir), dot(eye_normal, eye_dir));\n",
- "p|e!n", "\tv_eye_dir = eye_dir;\n",
- "t|n", "\tv_texcoord = gl_MultiTexCoord0.xy;\n",
- "s", "\tv_shadowcoord = vec3(dot(gl_EyePlaneS[shadow_unit], eye_pos), dot(gl_EyePlaneT[shadow_unit], eye_pos), dot(gl_EyePlaneR[shadow_unit], eye_pos));\n",
- "!lm", "\tv_color = gl_Color;\n",
- 0, "}",
- 0, 0
-};
-
-const char *standard_fragment_src[] =
-{
- "t", "uniform sampler2D texture;\n",
- "n", "uniform sampler2D normalmap;\n",
- "s", "uniform sampler2DShadow shadow;\n",
- "e", "uniform samplerCube environment;\n",
- "e", "uniform float reflectivity;\n",
- "t|n", "varying vec2 v_texcoord;\n",
- "s", "varying vec3 v_shadowcoord;\n",
- "!lm", "varying vec4 v_color;\n",
- "l!n", "varying vec3 v_normal;\n",
- "l", "varying vec3 v_light_dir;\n",
- "p|e", "varying vec3 v_eye_dir;\n",
- 0, "void main()\n",
- 0, "{\n",
- "n", "\tvec3 n_normal = texture2D(normalmap, v_texcoord).xyz*2.0-1.0;\n",
- "l!n", "\tvec3 n_normal = normalize(v_normal);\n",
- "l", "\tfloat l_diffuse = max(dot(n_normal, normalize(v_light_dir)), 0.0);\n",
- "p", "\tvec3 half_dir = normalize(v_eye_dir+v_light_dir);\n",
- "p", "\tfloat l_specular = pow(max(dot(half_dir, n_normal), 0.0), gl_FrontMaterial.shininess);\n",
- "s", "\tfloat l_shadow = shadow2D(shadow, v_shadowcoord).r;\n",
- /* XXX This is incorrect with normal mapping, since the vectors are in TBN
- space but environment map is expected to be in eye space */
- "e", "\tvec4 reflection = textureCube(environment, n_normal*(dot(n_normal, v_eye_dir)*2.0)-v_eye_dir);\n",
- "t", "\tvec4 tex_sample = texture2D(texture, v_texcoord);\n",
- 0, "\tgl_FragColor.rgb = ",
- "!t!m", "vec3(1.0)",
- "t", "tex_sample.rgb",
- "l|mt", "*",
- "l!m!t", "*",
- "!lm", "v_color.rgb",
- "l", "((l_diffuse",
- "lm", "*gl_FrontLightProduct[0].diffuse.rgb",
- "p", "+l_specular",
- "pm", "*gl_FrontLightProduct[0].specular.rgb",
- "l", ")",
- "s", "*l_shadow",
- "lm", "+gl_FrontLightModelProduct.sceneColor.rgb",
- "l", ")",
- "e", "+reflection.rgb*reflectivity",
- 0, ";\n",
- 0, "\tgl_FragColor.a = ",
- "!t!m", "1.0",
- "t", "tex_sample.a",
- "tm", "*",
- "!lm", "v_color.a",
- "lm", "gl_FrontMaterial.diffuse.a",
- 0, ";\n",
- 0, "}\n",
- 0, 0
-};
-
-}
-
namespace Msp {
namespace GL {
init();
}
-Program::Program(const StandardFeatures &features)
+Program::Program(const ProgramBuilder::StandardFeatures &features)
{
init();
- add_standard_shaders(features);
+ ProgramBuilder builder(features);
+ builder.add_shaders(*this);
if(!features.transform)
link();
}
}
}
-void Program::add_standard_shaders(const StandardFeatures &features)
-{
- string flags = features.create_flags();
- string vertex_src = process_standard_source(standard_vertex_src, flags);
- string fragment_src = process_standard_source(standard_fragment_src, flags);
- attach_shader_owned(new VertexShader(vertex_src));
- attach_shader_owned(new FragmentShader(fragment_src));
-}
-
-string Program::process_standard_source(const char **source, const string &flags)
-{
- string result;
-
- for(unsigned i=0; source[i+1]; i+=2)
- {
- if(source[i])
- {
- bool cond = true;
- char oper = '&';
- for(const char *c=source[i]; *c; ++c)
- {
- if(*c>='a' && *c<='z')
- {
- bool found = (flags.find(*c)!=string::npos);
- if(oper=='|')
- cond = (cond || found);
- else if(oper=='!')
- cond = (cond && !found);
- else if(oper=='&')
- cond = (cond && found);
- oper = '&';
- }
- else
- oper = *c;
- }
-
- if(!cond)
- continue;
- }
-
- result += source[i+1];
- }
-
- return result;
-}
-
void Program::bind_attribute(unsigned index, const string &name)
{
static Require _req(ARB_vertex_shader);
}
-Program::StandardFeatures::StandardFeatures():
- texture(false),
- material(false),
- lighting(false),
- specular(false),
- normalmap(false),
- shadow(false),
- reflection(false),
- transform(false)
-{ }
-
-string Program::StandardFeatures::create_flags() const
-{
- string flags;
- if(texture)
- flags += 't';
- if(material)
- flags += 'm';
- if(lighting)
- {
- flags += 'l';
- if(specular)
- flags += 'p';
- if(normalmap)
- flags += 'n';
- }
- if(shadow)
- flags += 's';
- if(reflection)
- flags += 'e';
- if(transform)
- flags += 'r';
-
- return flags;
-}
-
-
Program::Loader::Loader(Program &p):
DataFile::ObjectLoader<Program>(p)
{
void Program::Loader::standard()
{
- StandardFeatures feat;
+ ProgramBuilder::StandardFeatures feat;
load_sub(feat);
- obj.add_standard_shaders(feat);
+ ProgramBuilder builder(feat);
+ builder.add_shaders(obj);
}
void Program::Loader::vertex_shader(const string &src)
obj.attach_shader_owned(new VertexShader(src));
}
-
-Program::StandardFeatures::Loader::Loader(StandardFeatures &f):
- DataFile::ObjectLoader<StandardFeatures>(f)
-{
- add("lighting", &StandardFeatures::lighting);
- add("material", &StandardFeatures::material);
- add("normalmap", &StandardFeatures::normalmap);
- add("shadow", &StandardFeatures::shadow);
- add("specular", &StandardFeatures::specular);
- add("texture", &StandardFeatures::texture);
- add("transform", &StandardFeatures::transform);
-}
-
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff