-#include <msp/gl/extensions/arb_direct_state_access.h>
-#include <msp/gl/extensions/arb_instanced_arrays.h>
-#include <msp/gl/extensions/arb_vertex_array_object.h>
-#include <msp/gl/extensions/arb_vertex_attrib_binding.h>
-#include <msp/gl/extensions/arb_vertex_buffer_object.h>
-#include <msp/gl/extensions/arb_vertex_shader.h>
-#include <msp/gl/extensions/ext_gpu_shader4.h>
-#include <msp/gl/extensions/khr_debug.h>
-#include "buffer.h"
#include "deviceinfo.h"
#include "error.h"
#include "vertexarray.h"
namespace Msp {
namespace GL {
-VertexSetup::VertexSetup():
- dirty(0),
- vertex_array(0),
- inst_array(0),
- index_buffer(0),
- index_type(UNSIGNED_SHORT)
-{
- static Require req(ARB_vertex_array_object);
- if(ARB_direct_state_access)
- glCreateVertexArrays(1, &id);
- else
- glGenVertexArrays(1, &id);
-}
-
-VertexSetup::~VertexSetup()
-{
- glDeleteVertexArrays(1, &id);
-}
-
void VertexSetup::set_format(const VertexFormat &vfmt)
{
if(!verify_format(vfmt))
if(!vertex_format.empty())
throw invalid_operation("VertexSetup::set_format");
- require_format(vfmt);
+ require_format(vfmt, false);
vertex_format = vfmt;
}
void VertexSetup::set_format_instanced(const VertexFormat &vfmt, const VertexFormat &ifmt)
{
if(!verify_format(vfmt) || !verify_format(ifmt))
- throw invalid_argument("VertexSetup::set_format");
+ throw invalid_argument("VertexSetup::set_format_instanced");
if(!vertex_format.empty())
- throw invalid_operation("VertexSetup::set_format");
+ throw invalid_operation("VertexSetup::set_format_instanced");
- require_format(vfmt);
- require_format(ifmt);
+ require_format(vfmt, false);
+ require_format(ifmt, true);
vertex_format = vfmt;
inst_format = ifmt;
if(!a.get_buffer())
throw invalid_argument("VertexSetup::set_instance_array");
- static Require req(ARB_instanced_arrays);
-
inst_array = &a;
dirty |= INSTANCE_ARRAY;
}
if(fmt.empty())
return false;
- unsigned max_attribs = Limits::get_global().max_vertex_attributes;
-
- for(VertexAttribute a: fmt)
- if(get_attribute_semantic(a)>=max_attribs)
- return false;
-
- return true;
-}
-
-void VertexSetup::require_format(const VertexFormat &fmt)
-{
- bool has_int = false;
- for(VertexAttribute a: fmt)
- has_int = has_int | is_integer_attribute(a);
-
- if(has_int)
- static Require _req(EXT_gpu_shader4);
+ static unsigned max_attribs = DeviceInfo::get_global().limits.max_vertex_attributes;
+ return all_of(fmt.begin(), fmt.end(), [](VertexAttribute a){ return get_attribute_semantic(a)<max_attribs; });
}
void VertexSetup::update() const
{
- static bool direct = ARB_direct_state_access && ARB_vertex_attrib_binding;
-
- if(dirty&VERTEX_ARRAY)
- update_vertex_array(*vertex_array, 0, 0, direct);
-
- if(dirty&INSTANCE_ARRAY)
- update_vertex_array(*inst_array, 1, 1, direct);
-
- if(dirty&INDEX_BUFFER)
- {
- if(direct)
- glVertexArrayElementBuffer(id, index_buffer->id);
- else
- glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, index_buffer->id);
- }
-
+ VertexSetupBackend::update(dirty);
dirty = 0;
}
-void VertexSetup::update_vertex_array(const VertexArray &array, unsigned binding, unsigned divisor, bool direct) const
-{
- if(!direct)
- {
- Buffer::unbind_scratch();
- glBindBuffer(GL_ARRAY_BUFFER, array.get_buffer()->id);
- }
-
- const VertexFormat &fmt = array.get_format();
- unsigned stride = fmt.stride();
- if(direct)
- {
- glVertexArrayVertexBuffer(id, binding, array.get_buffer()->id, 0, stride);
- glVertexArrayBindingDivisor(id, binding, divisor);
- }
-
- unsigned offset = 0;
- for(VertexAttribute a: fmt)
- {
- unsigned sem = get_attribute_semantic(a);
- bool integer = is_integer_attribute(a);
- GLenum type = get_gl_type(get_attribute_source_type(a));
- unsigned cc = get_attribute_component_count(a);
- if(direct)
- {
- if(integer)
- glVertexArrayAttribIFormat(id, sem, cc, type, offset);
- else
- glVertexArrayAttribFormat(id, sem, cc, type, true, offset);
- glVertexArrayAttribBinding(id, sem, binding);
- glEnableVertexArrayAttrib(id, sem);
- }
- else
- {
- if(integer)
- glVertexAttribIPointer(sem, cc, type, stride, reinterpret_cast<void *>(offset));
- else
- glVertexAttribPointer(sem, cc, type, true, stride, reinterpret_cast<void *>(offset));
- if(ARB_instanced_arrays)
- glVertexAttribDivisor(sem, divisor);
- glEnableVertexAttribArray(sem);
- }
- offset += get_attribute_size(a);
- }
-
- if(!direct)
- glBindBuffer(GL_ARRAY_BUFFER, 0);
-}
-
void VertexSetup::unload()
{
- if(ARB_direct_state_access)
- {
- glVertexArrayVertexBuffer(id, 0, 0, 0, 0);
- glVertexArrayVertexBuffer(id, 1, 0, 0, 0);
- glVertexArrayElementBuffer(id, 0);
- }
- else
- {
- glBindVertexArray(id);
- glBindBuffer(GL_ARRAY_BUFFER, 0);
-
- for(VertexAttribute a: vertex_format)
- {
- unsigned sem = get_attribute_semantic(a);
- glDisableVertexAttribArray(sem);
- glVertexAttribPointer(sem, 1, GL_FLOAT, false, 0, 0);
- }
- for(VertexAttribute a: inst_format)
- {
- unsigned sem = get_attribute_semantic(a);
- glDisableVertexAttribArray(sem);
- glVertexAttribPointer(sem, 1, GL_FLOAT, false, 0, 0);
- }
-
- glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
- }
+ VertexSetupBackend::unload();
vertex_array = 0;
vertex_format = VertexFormat();
index_buffer = 0;
}
-void VertexSetup::set_debug_name(const string &name)
-{
-#ifdef DEBUG
- if(KHR_debug)
- glObjectLabel(GL_VERTEX_ARRAY, id, name.size(), name.c_str());
-#else
- (void)name;
-#endif
-}
-
} // namespace GL
} // namespace Msp