-#include <msp/gl/extensions/arb_direct_state_access.h>
-#include <msp/gl/extensions/arb_sampler_objects.h>
-#include <msp/gl/extensions/arb_shadow.h>
-#include <msp/gl/extensions/ext_texture_filter_anisotropic.h>
-#include <msp/gl/extensions/ext_texture3d.h>
-#include <msp/gl/extensions/khr_debug.h>
#include <msp/strings/format.h>
#include "error.h"
#include "sampler.h"
-#include "texture.h"
-#include "texunit.h"
using namespace std;
namespace Msp {
namespace GL {
-Sampler::Sampler():
- min_filter(NEAREST_MIPMAP_LINEAR),
- mag_filter(LINEAR),
- max_anisotropy(1.0f),
- wrap_s(REPEAT),
- wrap_t(REPEAT),
- wrap_r(REPEAT),
- border_color(Color(0.0f, 0.0f, 0.0f, 0.0f)),
- compare(false),
- cmp_func(LEQUAL),
- dirty_params(0)
+void Sampler::update() const
{
- Require _req(ARB_sampler_objects);
- if(ARB_direct_state_access)
- glCreateSamplers(1, &id);
- else
- glGenSamplers(1, &id);
-}
-
-void Sampler::update_parameter(int mask) const
-{
- if(mask&MIN_FILTER)
- glSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, min_filter);
- if(mask&MAG_FILTER)
- glSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, mag_filter);
- if(mask&MAX_ANISOTROPY)
- glSamplerParameterf(id, GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
- if(mask&WRAP_S)
- glSamplerParameteri(id, GL_TEXTURE_WRAP_S, wrap_s);
- if(mask&WRAP_T)
- glSamplerParameteri(id, GL_TEXTURE_WRAP_T, wrap_t);
- if(mask&WRAP_R)
- glSamplerParameteri(id, GL_TEXTURE_WRAP_R, wrap_r);
- if(mask&BORDER_COLOR)
- glSamplerParameterfv(id, GL_TEXTURE_BORDER_COLOR, &border_color.r);
- if(mask&COMPARE)
- {
- glSamplerParameteri(id, GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
- if(compare)
- glSamplerParameteri(id, GL_TEXTURE_COMPARE_FUNC, cmp_func);
- }
+ SamplerBackend::update(dirty_params);
+ dirty_params = 0;
}
void Sampler::set_min_filter(TextureFilter f)
{
min_filter = f;
- update_parameter(MIN_FILTER);
+ dirty_params |= MIN_FILTER;
}
void Sampler::set_mag_filter(TextureFilter f)
{
mag_filter = f;
- update_parameter(MAG_FILTER);
+ dirty_params |= MAG_FILTER;
}
void Sampler::set_filter(TextureFilter f)
{
if(a<1.0f)
throw invalid_argument("Sampler::set_max_anisotropy");
- else if(a>1.0f)
- static Require _req(EXT_texture_filter_anisotropic);
+ bool supported = check_anisotropic(a>1.0f);
max_anisotropy = a;
- if(EXT_texture_filter_anisotropic)
- update_parameter(MAX_ANISOTROPY);
+ if(supported)
+ dirty_params |= MAX_ANISOTROPY;
}
void Sampler::set_wrap(TextureWrap w)
{
set_wrap_s(w);
set_wrap_t(w);
- if(EXT_texture3D)
- set_wrap_r(w);
+ set_wrap_r(w);
}
void Sampler::set_wrap_s(TextureWrap w)
{
wrap_s = w;
- update_parameter(WRAP_S);
+ dirty_params |= WRAP_S;
}
void Sampler::set_wrap_t(TextureWrap w)
{
wrap_t = w;
- update_parameter(WRAP_T);
+ dirty_params |= WRAP_T;
}
void Sampler::set_wrap_r(TextureWrap w)
{
- static Require _req(EXT_texture3D);
wrap_r = w;
- update_parameter(WRAP_R);
+ dirty_params |= WRAP_R;
}
void Sampler::set_border_color(const Color &c)
{
border_color = c;
- update_parameter(BORDER_COLOR);
+ dirty_params |= BORDER_COLOR;
}
void Sampler::disable_compare()
{
compare = false;
- update_parameter(COMPARE);
+ dirty_params |= COMPARE;
}
void Sampler::set_compare(Predicate f)
{
- static Require _req(ARB_shadow);
compare = true;
cmp_func = f;
dirty_params |= COMPARE;
}
-void Sampler::bind_to(unsigned i) const
-{
- TexUnit &unit = TexUnit::get_unit(i);
-
- if(unit.set_sampler(this))
- {
- glBindSampler(i, id);
-
- if(dirty_params)
- {
- update_parameter(dirty_params);
- dirty_params = 0;
- }
- }
-}
-
-const Sampler *Sampler::current(unsigned i)
-{
- return TexUnit::get_unit(i).get_sampler();
-}
-
-void Sampler::unbind_from(unsigned i)
-{
- TexUnit &unit = TexUnit::get_unit(i);
- if(unit.set_sampler(0))
- glBindSampler(i, 0);
-}
-
-void Sampler::set_debug_name(const string &name)
-{
-#ifdef DEBUG
- if(id && KHR_debug)
- glObjectLabel(GL_SAMPLER, id, name.size(), name.c_str());
-#else
- (void)name;
-#endif
-}
-
Sampler::Loader::Loader(Sampler &s):
DataFile::ObjectLoader<Sampler>(s)