Add functions for setting arrays of 2x2 and 3x3 matrix uniforms

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

diff --git a/source/texture.cpp b/source/texture.cpp
index 820dd10fd90318c64278ae9b0aed66cf227d8743..f1689145c8af9c5754569213a7561b0505e63b2c 100644 (file)
--- a/source/texture.cpp
+++ b/source/texture.cpp
@@ -7,6 +7,7 @@
 #include <msp/gl/extensions/sgis_generate_mipmap.h>
 #include <msp/io/memory.h>
 #include <msp/strings/format.h>
+#include "bindable.h"
 #include "error.h"
 #include "resourcemanager.h"
 #include "resources.h"
@@ -63,11 +64,12 @@ Texture::Texture(GLenum t, ResourceManager *m):
        ifmt(RGB),
        min_filter(NEAREST_MIPMAP_LINEAR),
        mag_filter(LINEAR),
+       mipmap_levels(0),
        max_anisotropy(1.0f),
        wrap_s(REPEAT),
        wrap_t(REPEAT),
        wrap_r(REPEAT),
-       gen_mipmap(false),
+       auto_gen_mipmap(0),
        compare(false),
        cmp_func(LEQUAL),
        dirty_params(0)
@@ -156,7 +158,7 @@ void Texture::update_parameter(int mask) const
        if(mask&WRAP_R)
                set_parameter_i(GL_TEXTURE_WRAP_R, wrap_r);
        if(mask&GENERATE_MIPMAP)
-               set_parameter_i(GL_GENERATE_MIPMAP, gen_mipmap);
+               set_parameter_i(GL_GENERATE_MIPMAP, auto_gen_mipmap!=0);
        if(mask&COMPARE)
                set_parameter_i(GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
        if(mask&COMPARE_FUNC)
@@ -178,6 +180,8 @@ void Texture::update_parameter(int mask) const
                                glTexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
                }
        }
+       if(mask&MIPMAP_LEVELS)
+               set_parameter_i(GL_TEXTURE_MAX_LEVEL, (mipmap_levels ? mipmap_levels-1 : 1000));
 }
 
 void Texture::set_parameter_i(GLenum param, int value) const
@@ -214,6 +218,12 @@ void Texture::set_filter(TextureFilter f)
        set_mag_filter(f==NEAREST ? NEAREST : LINEAR);
 }
 
+void Texture::set_mipmap_levels(unsigned l)
+{
+       mipmap_levels = l;
+       update_parameter(MIPMAP_LEVELS);
+}
+
 void Texture::set_max_anisotropy(float a)
 {
        if(a<1.0f)
@@ -257,24 +267,31 @@ bool Texture::can_generate_mipmap()
        return (EXT_framebuffer_object || SGIS_generate_mipmap);
 }
 
-void Texture::set_generate_mipmap(bool gm)
+void Texture::generate_mipmap()
 {
-       if(gm && !EXT_framebuffer_object)
-               static Require _req(SGIS_generate_mipmap);
-       gen_mipmap = gm;
-       if(!EXT_framebuffer_object)
-               update_parameter(GENERATE_MIPMAP);
+       // glGenerateMipmap is defined here
+       static Require _req(EXT_framebuffer_object);
+
+       if(ARB_direct_state_access)
+               glGenerateTextureMipmap(id);
+       else
+       {
+               BindRestore _bind(this);
+               glGenerateMipmap(target);
+       }
 }
 
-void Texture::auto_generate_mipmap()
+void Texture::set_auto_generate_mipmap(bool gm)
 {
-       // glGenerateMipmap is defined here
        if(EXT_framebuffer_object)
+               auto_gen_mipmap = gm;
+       else
        {
-               if(ARB_direct_state_access)
-                       glGenerateTextureMipmap(id);
-               else
-                       glGenerateMipmap(target);
+               if(gm)
+                       static Require _req(SGIS_generate_mipmap);
+
+               auto_gen_mipmap = gm*2;
+               update_parameter(GENERATE_MIPMAP);
        }
 }
 
@@ -403,6 +420,7 @@ void Texture::Loader::init()
        add("mag_filter", &Loader::mag_filter);
        add("max_anisotropy", &Loader::max_anisotropy);
        add("min_filter", &Loader::min_filter);
+       add("mipmap_levels", &Loader::mipmap_levels);
        add("wrap",       &Loader::wrap);
        add("wrap_r",     &Loader::wrap_r);
        add("wrap_s",     &Loader::wrap_s);
@@ -413,6 +431,8 @@ void Texture::Loader::external_image(const string &fn)
 {
        Graphics::Image img;
        RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
+       if(!io)
+               throw IO::file_not_found(fn);
        img.load_io(*io);
 
        obj.image(img, srgb);
@@ -425,7 +445,7 @@ void Texture::Loader::filter(TextureFilter f)
 
 void Texture::Loader::generate_mipmap(bool gm)
 {
-       obj.set_generate_mipmap(gm);
+       obj.set_auto_generate_mipmap(gm);
 }
 
 void Texture::Loader::image_data(const string &data)
@@ -452,6 +472,11 @@ void Texture::Loader::min_filter(TextureFilter f)
        obj.set_min_filter(f);
 }
 
+void Texture::Loader::mipmap_levels(unsigned l)
+{
+       obj.set_mipmap_levels(l);
+}
+
 void Texture::Loader::wrap(TextureWrap w)
 {
        obj.set_wrap(w);