#include <algorithm>
+#include <cstring>
#include <msp/core/hash.h>
+#include <msp/core/maputils.h>
#include <msp/strings/format.h>
#include "arb_shader_objects.h"
+#include "arb_uniform_buffer_object.h"
#include "arb_vertex_shader.h"
+#include "buffer.h"
#include "error.h"
-#include "extension.h"
#include "program.h"
#include "shader.h"
void Program::init()
{
- static RequireExtension _ext("GL_ARB_shader_objects");
+ static Require _req(ARB_shader_objects);
linked = false;
- id = glCreateProgramObjectARB();
+ id = glCreateProgram();
}
Program::~Program()
{
- for(list<Shader *>::iterator i=owned_data.begin(); i!=owned_data.end(); ++i)
+ for(ShaderList::iterator i=owned_data.begin(); i!=owned_data.end(); ++i)
delete *i;
- glDeleteObjectARB(id);
+ glDeleteProgram(id);
}
void Program::attach_shader(Shader &shader)
{
if(find(shaders.begin(), shaders.end(), &shader)==shaders.end())
{
- glAttachObjectARB(id, shader.get_id());
+ glAttachShader(id, shader.get_id());
shaders.push_back(&shader);
}
}
void Program::detach_shader(Shader &shader)
{
- list<Shader *>::iterator i = remove(shaders.begin(), shaders.end(), &shader);
+ ShaderList::iterator i = remove(shaders.begin(), shaders.end(), &shader);
if(i!=shaders.end())
{
shaders.erase(i, shaders.end());
- glDetachObjectARB(id, shader.get_id());
+ glDetachShader(id, shader.get_id());
}
}
void Program::bind_attribute(unsigned index, const string &name)
{
- static RequireExtension _ext("GL_ARB_vertex_shader");
- glBindAttribLocationARB(id, index, name.c_str());
+ static Require _req(ARB_vertex_shader);
+ glBindAttribLocation(id, index, name.c_str());
}
void Program::link()
{
- for(list<Shader *>::iterator i=shaders.begin(); i!=shaders.end(); ++i)
+ for(ShaderList::iterator i=shaders.begin(); i!=shaders.end(); ++i)
if(!(*i)->is_compiled())
(*i)->compile();
uniforms.clear();
- glLinkProgramARB(id);
+ glLinkProgram(id);
int value;
- glGetObjectParameterivARB(id, GL_OBJECT_LINK_STATUS_ARB, &value);
+ glGetProgramiv(id, GL_LINK_STATUS, &value);
if(!(linked = value))
throw compile_error(get_info_log());
- glGetObjectParameterivARB(id, GL_OBJECT_ACTIVE_UNIFORMS_ARB, &value);
- for(int i=0; i<value; ++i)
+ glGetProgramiv(id, GL_ACTIVE_UNIFORMS, &value);
+ unsigned count = value;
+ vector<UniformInfo *> uniforms_by_index(count);
+ for(unsigned i=0; i<count; ++i)
{
- UniformInfo info;
char name[128];
int len = 0;
- glGetActiveUniformARB(id, i, 128, &len, &info.size, &info.type, name);
- if(len)
+ int size;
+ GLenum type;
+ glGetActiveUniform(id, i, 128, &len, &size, &type, name);
+ if(len && strncmp(name, "gl_", 3))
{
+ UniformInfo &info = uniforms[name];
+ info.block = 0;
info.name = name;
- info.location = glGetUniformLocationARB(id, name);
- uniforms[name] = info;
+ info.size = size;
+ info.array_stride = 0;
+ info.matrix_stride = 0;
+ info.type = type;
+ uniforms_by_index[i] = &info;
}
}
- string layout_descriptor;
- for(map<string, UniformInfo>::const_iterator i = uniforms.begin(); i!=uniforms.end(); ++i)
- if(i->second.location>=0)
+ if(ARB_uniform_buffer_object)
+ {
+ glGetProgramiv(id, GL_ACTIVE_UNIFORM_BLOCKS, &value);
+ count = value;
+ for(unsigned i=0; i<count; ++i)
{
- if(!layout_descriptor.empty())
- layout_descriptor += '\n';
- layout_descriptor += format("%d:%s:%x", i->second.location, i->second.name, i->second.type);
+ char name[128];
+ int len;
+ glGetActiveUniformBlockName(id, i, 128, &len, name);
+ UniformBlockInfo &info = uniform_blocks[name];
+ info.name = name;
+
+ glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_DATA_SIZE, &value);
+ info.data_size = value;
+
+ glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &value);
+ vector<int> indices(value);
+ glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, &indices[0]);
+ for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
+ {
+ if(!uniforms_by_index[*j])
+ throw logic_error("Program::link");
+ info.uniforms.push_back(uniforms_by_index[*j]);
+ uniforms_by_index[*j]->block = &info;
+ }
+
+ vector<unsigned> indices2(indices.begin(), indices.end());
+ vector<int> values(indices.size());
+ glGetActiveUniformsiv(id, indices.size(), &indices2[0], GL_UNIFORM_OFFSET, &values[0]);
+ for(unsigned j=0; j<indices.size(); ++j)
+ uniforms_by_index[indices[j]]->location = values[j];
+
+ indices2.clear();
+ for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
+ if(uniforms_by_index[*j]->size>1)
+ indices2.push_back(*j);
+ if(!indices2.empty())
+ {
+ glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_ARRAY_STRIDE, &values[0]);
+ for(unsigned j=0; j<indices2.size(); ++j)
+ uniforms_by_index[indices[j]]->array_stride = values[j];
+ }
+
+ indices2.clear();
+ for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
+ {
+ GLenum t = uniforms_by_index[*j]->type;
+ if(t==GL_FLOAT_MAT4 || t==GL_FLOAT_MAT3 || t==GL_FLOAT_MAT2 ||
+ t==GL_FLOAT_MAT2x3 || t==GL_FLOAT_MAT2x4 || t==GL_FLOAT_MAT3x2 ||
+ t==GL_FLOAT_MAT3x4 || t==GL_FLOAT_MAT4x2 || t==GL_FLOAT_MAT4x3)
+ indices2.push_back(*j);
+ }
+ if(!indices2.empty())
+ {
+ glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_MATRIX_STRIDE, &values[0]);
+ for(unsigned j=0; j<indices2.size(); ++j)
+ uniforms_by_index[indices[j]]->matrix_stride = values[j];
+ }
+
+ sort(info.uniforms.begin(), info.uniforms.end(), uniform_location_compare);
+ info.layout_hash = compute_layout_hash(info.uniforms);
+ info.bind_point = info.layout_hash%BufferRange::get_n_uniform_buffer_bindings();
+ glUniformBlockBinding(id, i, info.bind_point);
}
- uniform_layout_hash = hash32(layout_descriptor);
+ }
+
+ vector<const UniformInfo *> blockless_uniforms;
+ for(UniformMap::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
+ if(!i->second.block)
+ {
+ i->second.location = glGetUniformLocation(id, i->second.name.c_str());
+ blockless_uniforms.push_back(&i->second);
+ }
+
+ uniform_layout_hash = compute_layout_hash(blockless_uniforms);
+}
+
+unsigned Program::compute_layout_hash(const vector<const UniformInfo *> &uniforms)
+{
+ string layout_descriptor;
+ for(vector<const UniformInfo *>::const_iterator i = uniforms.begin(); i!=uniforms.end(); ++i)
+ layout_descriptor += format("%d:%s:%x:%d\n", (*i)->location, (*i)->name, (*i)->type, (*i)->size);
+ return hash32(layout_descriptor);
+}
+
+bool Program::uniform_location_compare(const UniformInfo *uni1, const UniformInfo *uni2)
+{
+ return uni1->location<uni2->location;
}
string Program::get_info_log() const
{
GLsizei len = 0;
- glGetObjectParameterivARB(id, GL_OBJECT_INFO_LOG_LENGTH_ARB, &len);
+ glGetProgramiv(id, GL_INFO_LOG_LENGTH, &len);
char *buf = new char[len+1];
- glGetInfoLogARB(id, len+1, &len, buf);
+ glGetProgramInfoLog(id, len+1, &len, buf);
string log(buf, len);
delete[] buf;
return log;
}
-void Program::bind() const
+const Program::UniformBlockInfo &Program::get_uniform_block_info(const string &name) const
{
- if(!linked)
- throw invalid_operation("Program::bind");
-
- if(!set_current(this))
- return;
+ return get_item(uniform_blocks, name);
+}
- glUseProgramObjectARB(id);
+const Program::UniformInfo &Program::get_uniform_info(const string &name) const
+{
+ return get_item(uniforms, name);
}
int Program::get_uniform_location(const string &n) const
{
- map<string, UniformInfo>::const_iterator i = uniforms.find(n);
+ UniformMap::const_iterator i = uniforms.find(n);
if(i==uniforms.end())
{
if(n[n.size()-1]==']')
/* The requested name looks like an array. glGetActiveUniform only
gives us the first element of the array, so try to look that up and
add an offset. */
- int offset = lexical_cast<unsigned>(n.substr(open_bracket+1, n.size()-2-open_bracket));
+ unsigned offset = lexical_cast<unsigned>(n.substr(open_bracket+1, n.size()-2-open_bracket));
i = uniforms.find(n.substr(0, open_bracket)+"[0]");
- if(i!=uniforms.end() && offset<i->second.size)
+ if(i!=uniforms.end() && !i->second.block && offset<i->second.size)
return i->second.location+offset;
}
}
return -1;
}
- return i->second.location;
+ return i->second.block ? -1 : i->second.location;
+}
+
+void Program::bind() const
+{
+ if(!linked)
+ throw invalid_operation("Program::bind");
+
+ if(!set_current(this))
+ return;
+
+ glUseProgram(id);
}
void Program::unbind()
if(!set_current(0))
return;
- glUseProgramObjectARB(0);
+ glUseProgram(0);
}
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