Make ambient occlusion edge detection threshold adjustable

[libs/gl.git] / source / texture1d.cpp

diff --git a/source/texture1d.cpp b/source/texture1d.cpp
index 043e0c0e1008bcc4346cc6852b42ad19d9f99e4a..e746409b8101dfca984017761e5a46998927edf8 100644 (file)
--- a/source/texture1d.cpp
+++ b/source/texture1d.cpp
@@ -1,3 +1,6 @@
+#include <msp/core/raii.h>
+#include <msp/gl/extensions/arb_direct_state_access.h>
+#include <msp/gl/extensions/arb_texture_storage.h>
 #include <msp/gl/extensions/msp_texture1d.h>
 #include "bindable.h"
 #include "error.h"
@@ -10,32 +13,51 @@ namespace GL {
 
 Texture1D::Texture1D():
        Texture(GL_TEXTURE_1D),
-       ifmt(RGB),
        width(0),
        allocated(0)
 {
        static Require _req(MSP_texture1D);
 }
 
-void Texture1D::storage(PixelFormat fmt, unsigned wd)
+void Texture1D::storage(PixelFormat fmt, unsigned wd, unsigned lv)
 {
        if(width>0)
                throw invalid_operation("Texture1D::storage");
        if(wd==0)
                throw invalid_argument("Texture1D::storage");
-       require_pixelformat(fmt);
 
-       ifmt = fmt;
+       set_internal_format(fmt);
        width = wd;
+       levels = get_n_levels();
+       if(lv)
+               levels = min(levels, lv);
 }
 
 void Texture1D::allocate(unsigned level)
 {
+       if(width==0)
+               throw invalid_operation("Texture1D::allocate");
+       if(level>=levels)
+               throw invalid_argument("Texture1D::allocate");
        if(allocated&(1<<level))
                return;
 
-       PixelFormat base_fmt = get_base_pixelformat(ifmt);
-       image(level, base_fmt, get_alloc_type(base_fmt), 0);
+       if(ARB_texture_storage)
+       {
+               if(ARB_direct_state_access)
+                       glTextureStorage1D(id, levels, ifmt, width);
+               else
+               {
+                       BindRestore _bind(this);
+                       glTexStorage1D(target, levels, ifmt, width);
+               }
+               allocated |= (1<<levels)-1;
+       }
+       else
+       {
+               PixelFormat base_fmt = get_base_pixelformat(ifmt);
+               image(level, base_fmt, get_alloc_type(base_fmt), 0);
+       }
 }
 
 void Texture1D::image(unsigned level, PixelFormat fmt, DataType type, const void *data)
@@ -45,18 +67,38 @@ void Texture1D::image(unsigned level, PixelFormat fmt, DataType type, const void
 
        unsigned w = get_level_size(level);
 
+       if(ARB_texture_storage)
+               return sub_image(level, 0, w, fmt, type, data);
+
        BindRestore _bind(this);
-       glTexImage1D(target, level, ifmt, w, 0, fmt, type, data);
+       glTexImage1D(target, level, ifmt, w, 0, get_upload_format(fmt), type, data);
 
        allocated |= 1<<level;
        if(gen_mipmap && level==0)
        {
                auto_generate_mipmap();
-               for(; w; w>>=1, ++level) ;
-               allocated |= (1<<level)-1;
+               allocated |= (1<<get_n_levels())-1;
        }
 }
 
+void Texture1D::sub_image(unsigned level, int x, unsigned wd, PixelFormat fmt, DataType type, const void *data)
+{
+       if(width==0)
+               throw invalid_operation("Texture3D::image");
+
+       Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
+       allocate(level);
+
+       fmt = get_upload_format(fmt);
+       if(ARB_direct_state_access)
+               glTextureSubImage1D(id, level, x, wd, fmt, type, data);
+       else
+               glTexSubImage1D(target, level, x, wd, fmt, type, data);
+
+       if(gen_mipmap && level==0)
+               auto_generate_mipmap();
+}
+
 void Texture1D::image(const Graphics::Image &img, bool srgb)
 {
        if(img.get_height()!=1)
@@ -65,14 +107,24 @@ void Texture1D::image(const Graphics::Image &img, bool srgb)
        unsigned w = img.get_width();
        PixelFormat fmt = pixelformat_from_graphics(img.get_format());
        if(width==0)
-               storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w);
+       {
+               unsigned l = (is_mipmapped(min_filter) ? mipmap_levels ? mipmap_levels : 0 : 1);
+               storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w, l);
+       }
        else if(w!=width)
                throw incompatible_data("Texture1D::image");
 
        image(0, fmt, UNSIGNED_BYTE, img.get_data());
 }
 
-unsigned Texture1D::get_level_size(unsigned level)
+unsigned Texture1D::get_n_levels() const
+{
+       unsigned n = 0;
+       for(unsigned s=width; s; s>>=1, ++n) ;
+       return n;
+}
+
+unsigned Texture1D::get_level_size(unsigned level) const
 {
        return width>>level;
 }
@@ -108,8 +160,6 @@ void Texture1D::Loader::raw_data(const string &data)
 
 void Texture1D::Loader::storage(PixelFormat fmt, unsigned w)
 {
-       if(srgb)
-               fmt = get_srgb_pixelformat(fmt);
        obj.storage(fmt, w);
 }