-#include <msp/core/raii.h>
-#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/khr_debug.h>
-#include "buffer.h"
+#include "device.h"
#include "error.h"
-#include "gl.h"
-#include "misc.h"
#include "vertexarray.h"
#include "vertexsetup.h"
namespace Msp {
namespace GL {
-VertexSetup::VertexSetup():
- dirty(0),
- vertex_array(0),
- inst_array(0),
- index_buffer(0)
+void VertexSetup::set_format(const VertexFormat &vfmt)
{
- static Require req(ARB_vertex_array_object);
- if(ARB_direct_state_access)
- glCreateVertexArrays(1, &id);
- else
- glGenVertexArrays(1, &id);
+ if(!verify_format(vfmt))
+ throw invalid_argument("VertexSetup::set_format");
+ if(!vertex_format.empty())
+ throw invalid_operation("VertexSetup::set_format");
+
+ require_format(vfmt, false);
+
+ vertex_format = vfmt;
}
-VertexSetup::~VertexSetup()
+void VertexSetup::set_format_instanced(const VertexFormat &vfmt, const VertexFormat &ifmt)
{
- if(current()==this)
- unbind();
- glDeleteVertexArrays(1, &id);
+ if(!verify_format(vfmt) || !verify_format(ifmt))
+ throw invalid_argument("VertexSetup::set_format_instanced");
+ if(!vertex_format.empty())
+ throw invalid_operation("VertexSetup::set_format_instanced");
+
+ require_format(vfmt, false);
+ require_format(ifmt, true);
+
+ vertex_format = vfmt;
+ inst_format = ifmt;
}
void VertexSetup::set_vertex_array(const VertexArray &a)
{
- if(!verify_array(a))
+ if(vertex_format.empty())
+ throw invalid_operation("VertexSetup::set_vertex_array");
+ if(a.get_format()!=vertex_format)
+ throw incompatible_data("VertexSetup::set_vertex_array");
+ if(!a.get_buffer())
throw invalid_argument("VertexSetup::set_vertex_array");
vertex_array = &a;
- update(get_update_mask(VERTEX_ARRAY, vertex_format, *vertex_array));
- vertex_format = vertex_array->get_format();
+ dirty |= VERTEX_ARRAY;
}
-void VertexSetup::set_instance_array(const VertexArray *a)
+void VertexSetup::set_instance_array(const VertexArray &a)
{
- if(a)
- {
- if(!verify_array(*a))
- throw invalid_argument("VertexSetup::set_instance_array");
-
- static Require req(ARB_instanced_arrays);
- }
-
- inst_array = a;
- update(get_update_mask(INSTANCE_ARRAY, inst_format, *inst_array));
- inst_format = inst_array->get_format();
+ if(inst_format.empty())
+ throw invalid_operation("VertexSetup::set_instance_array");
+ if(a.get_format()!=inst_format)
+ throw incompatible_data("VertexSetup::set_instance_array");
+ if(!a.get_buffer())
+ throw invalid_argument("VertexSetup::set_instance_array");
+
+ inst_array = &a;
+ dirty |= INSTANCE_ARRAY;
}
-void VertexSetup::set_index_buffer(const Buffer &ibuf)
+void VertexSetup::set_index_buffer(const Buffer &ibuf, DataType itype)
{
index_buffer = &ibuf;
- update(INDEX_BUFFER);
+ index_type = itype;
+ dirty |= INDEX_BUFFER;
}
-void VertexSetup::refresh()
+bool VertexSetup::verify_format(const VertexFormat &fmt)
{
- if(vertex_array && vertex_array->get_format()!=vertex_format)
- set_vertex_array(*vertex_array);
-
- if(inst_array && inst_array->get_format()!=inst_format)
- set_instance_array(inst_array);
-}
-
-bool VertexSetup::verify_array(const VertexArray &array)
-{
- if(!array.get_buffer())
+ if(fmt.empty())
return false;
- static int max_attribs = -1;
- if(max_attribs<0)
- max_attribs = get_i(GL_MAX_VERTEX_ATTRIBS);
-
- const VertexFormat &fmt = array.get_format();
- for(const unsigned char *a=fmt.begin(); a!=fmt.end(); ++a)
- if(static_cast<int>(get_attribute_semantic(*a))>=max_attribs)
- return false;
-
- return true;
-}
-
-unsigned VertexSetup::get_attribs(const VertexFormat &fmt)
-{
- unsigned mask = 0;
- for(const unsigned char *a=fmt.begin(); a!=fmt.end(); ++a)
- mask |= 1<<get_attribute_semantic(*a);
- return mask;
-}
-
-unsigned VertexSetup::get_update_mask(unsigned base, const VertexFormat &cur_fmt, const VertexArray &new_array)
-{
- unsigned unused = get_attribs(cur_fmt)&~get_attribs(new_array.get_format());
- return base | (unused ? UNUSED_ATTRIBS | (unused<<ATTRIB_SHIFT) : 0);
-}
-
-void VertexSetup::update(unsigned mask) const
-{
- static bool direct = ARB_direct_state_access && ARB_vertex_attrib_binding;
- if(!direct && current()!=this)
- {
- dirty |= mask;
- return;
- }
-
- if(mask&UNUSED_ATTRIBS)
- {
- for(unsigned i=0, am=mask>>ATTRIB_SHIFT; am; ++i, am>>=1)
- if(am&1)
- {
- if(direct)
- glDisableVertexArrayAttrib(id, i);
- else
- glDisableVertexAttribArray(i);
- }
- }
-
- if(mask&VERTEX_ARRAY)
- update_vertex_array(*vertex_array, 0, 0, direct);
-
- if((mask&INSTANCE_ARRAY) && inst_array)
- update_vertex_array(*inst_array, 1, 1, direct);
-
- if(mask&INDEX_BUFFER)
- {
- if(direct)
- glVertexArrayElementBuffer(id, index_buffer->get_id());
- else
- glBindBuffer(ELEMENT_ARRAY_BUFFER, index_buffer->get_id());
- }
+ static unsigned max_attribs = Device::get_current().get_info().limits.max_vertex_attributes;
+ return all_of(fmt.begin(), fmt.end(), [](VertexAttribute a){ return is_padding(a) || get_attribute_semantic(a)<max_attribs; });
}
-void VertexSetup::update_vertex_array(const VertexArray &array, unsigned binding, unsigned divisor, bool direct) const
+void VertexSetup::update() const
{
- Conditional<Bind> bind_vbuf(!direct, array.get_buffer(), ARRAY_BUFFER);
-
- const VertexFormat &fmt = array.get_format();
- unsigned stride = fmt.stride()*sizeof(float);
- if(direct)
- {
- glVertexArrayVertexBuffer(id, binding, array.get_buffer()->get_id(), 0, stride);
- glVertexArrayBindingDivisor(id, binding, divisor);
- }
-
- unsigned offset = 0;
- for(const unsigned char *a=fmt.begin(); a!=fmt.end(); ++a)
- {
- unsigned sem = get_attribute_semantic(*a);
- unsigned sz = get_attribute_size(*a);
- if(direct)
- {
- if(*a==COLOR4_UBYTE)
- glVertexArrayAttribFormat(id, sem, 4, GL_UNSIGNED_BYTE, true, offset);
- else
- glVertexArrayAttribFormat(id, sem, sz, GL_FLOAT, false, offset);
- glVertexArrayAttribBinding(id, sem, binding);
- glEnableVertexArrayAttrib(id, sem);
- }
- else
- {
- if(*a==COLOR4_UBYTE)
- glVertexAttribPointer(sem, 4, GL_UNSIGNED_BYTE, true, stride, reinterpret_cast<unsigned char *>(offset));
- else
- glVertexAttribPointer(sem, sz, GL_FLOAT, false, stride, reinterpret_cast<float *>(offset));
- if(ARB_instanced_arrays)
- glVertexAttribDivisor(sem, divisor);
- glEnableVertexAttribArray(sem);
- }
- offset += sz*sizeof(float);
- }
-}
-
-void VertexSetup::bind() const
-{
- if(!vertex_array || !index_buffer)
- throw invalid_operation("VertexSetup::bind");
-
- if(set_current(this))
- {
- vertex_array->refresh();
- if(inst_array)
- inst_array->refresh();
- glBindVertexArray(id);
- if(dirty)
- {
- update(dirty);
- dirty = 0;
- }
- }
-}
-
-void VertexSetup::unbind()
-{
- if(set_current(0))
- glBindVertexArray(0);
+ VertexSetupBackend::update(dirty);
+ dirty = 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
- {
- BindRestore _bind(*this);
- Buffer::unbind_from(ARRAY_BUFFER);
-
- unsigned mask = get_attribs(vertex_format)|get_attribs(inst_format);
- for(unsigned i=0; mask; ++i, mask>>=1)
- if(mask&1)
- {
- glDisableVertexAttribArray(i);
- glVertexAttribPointer(i, 1, GL_FLOAT, false, 0, 0);
- }
- glBindBuffer(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
projects / libs / gl.git / blobdiff