+#include <msp/gl/extensions/arb_direct_state_access.h>
#include <msp/gl/extensions/arb_shadow.h>
+#include <msp/gl/extensions/arb_texture_swizzle.h>
#include <msp/gl/extensions/ext_framebuffer_object.h>
#include <msp/gl/extensions/ext_texture3d.h>
#include <msp/gl/extensions/ext_texture_filter_anisotropic.h>
#include <msp/gl/extensions/sgis_generate_mipmap.h>
+#include <msp/io/memory.h>
#include <msp/strings/format.h>
#include "error.h"
#include "resourcemanager.h"
}
+int Texture::swizzle_orders[] =
+{
+ GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA,
+ GL_RED, GL_RED, GL_RED, GL_ONE,
+ GL_RED, GL_RED, GL_RED, GL_GREEN
+};
+
Texture::Texture(GLenum t, ResourceManager *m):
id(0),
target(t),
+ ifmt(RGB),
min_filter(NEAREST_MIPMAP_LINEAR),
mag_filter(LINEAR),
wrap_s(REPEAT),
{
if(m)
set_manager(m);
+ else if(ARB_direct_state_access)
+ glCreateTextures(target, 1, &id);
else
glGenTextures(1, &id);
}
DataType Texture::get_alloc_type(PixelFormat fmt)
{
- return (fmt==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
+ return (get_base_pixelformat(fmt)==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
+}
+
+void Texture::set_internal_format(PixelFormat fmt)
+{
+ if(!get_component_size(fmt) && MSP_sized_internal_formats)
+ {
+ unsigned size = (fmt==DEPTH_COMPONENT ? get_gl_api()==OPENGL_ES2 ? 2 : 4 : 1);
+ fmt = get_sized_pixelformat(fmt, size);
+ }
+
+ FormatSwizzle swiz = NO_SWIZZLE;
+ if(ARB_texture_rg && ARB_texture_swizzle)
+ {
+ if(fmt==LUMINANCE8 || fmt==SLUMINANCE8)
+ {
+ fmt = R8;
+ swiz = R_TO_LUMINANCE;
+ }
+ else if(fmt==LUMINANCE8_ALPHA8 || fmt==SLUMINANCE8_ALPHA8)
+ {
+ fmt = RG8;
+ swiz = RG_TO_LUMINANCE_ALPHA;
+ }
+ }
+
+ require_pixelformat(fmt);
+ ifmt = fmt;
+ swizzle = swiz;
+ if(swizzle)
+ update_parameter(FORMAT_SWIZZLE);
+}
+
+PixelFormat Texture::get_upload_format(PixelFormat fmt) const
+{
+ if(fmt==LUMINANCE || fmt==LUMINANCE_ALPHA)
+ return get_base_pixelformat(ifmt);
+ else
+ return fmt;
}
void Texture::update_parameter(int mask) const
{
- if(TexUnit::current().get_texture()!=this)
+ if(!ARB_direct_state_access && TexUnit::current().get_texture()!=this)
{
TexUnit *unit = TexUnit::find_unit(this);
if(!unit)
}
if(mask&MIN_FILTER)
- glTexParameteri(target, GL_TEXTURE_MIN_FILTER, min_filter);
+ set_parameter_i(GL_TEXTURE_MIN_FILTER, min_filter);
if(mask&MAG_FILTER)
- glTexParameteri(target, GL_TEXTURE_MAG_FILTER, mag_filter);
+ set_parameter_i(GL_TEXTURE_MAG_FILTER, mag_filter);
if(mask&MAX_ANISOTROPY)
- glTexParameteri(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
+ set_parameter_f(GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
if(mask&WRAP_S)
- glTexParameteri(target, GL_TEXTURE_WRAP_S, wrap_s);
+ set_parameter_i(GL_TEXTURE_WRAP_S, wrap_s);
if(mask&WRAP_T)
- glTexParameteri(target, GL_TEXTURE_WRAP_T, wrap_t);
+ set_parameter_i(GL_TEXTURE_WRAP_T, wrap_t);
if(mask&WRAP_R)
- glTexParameteri(target, GL_TEXTURE_WRAP_R, wrap_r);
+ set_parameter_i(GL_TEXTURE_WRAP_R, wrap_r);
if(mask&GENERATE_MIPMAP)
- glTexParameteri(target, GL_GENERATE_MIPMAP, gen_mipmap);
+ set_parameter_i(GL_GENERATE_MIPMAP, gen_mipmap);
if(mask&COMPARE)
- glTexParameteri(target, GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
+ set_parameter_i(GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
if(mask&COMPARE_FUNC)
- glTexParameteri(target, GL_TEXTURE_COMPARE_FUNC, cmp_func);
+ set_parameter_i(GL_TEXTURE_COMPARE_FUNC, cmp_func);
+ if(mask&FORMAT_SWIZZLE)
+ {
+ if(ARB_direct_state_access)
+ glTextureParameteriv(id, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
+ else
+ glTexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
+ }
+}
+
+void Texture::set_parameter_i(GLenum param, int value) const
+{
+ if(ARB_direct_state_access)
+ glTextureParameteri(id, param, value);
+ else
+ glTexParameteri(target, param, value);
+}
+
+void Texture::set_parameter_f(GLenum param, float value) const
+{
+ if(ARB_direct_state_access)
+ glTextureParameterf(id, param, value);
+ else
+ glTexParameterf(target, param, value);
}
void Texture::set_min_filter(TextureFilter f)
update_parameter(WRAP_R);
}
+bool Texture::can_generate_mipmap()
+{
+ return (EXT_framebuffer_object || SGIS_generate_mipmap);
+}
+
void Texture::set_generate_mipmap(bool gm)
{
- if(gm)
+ if(gm && !EXT_framebuffer_object)
static Require _req(SGIS_generate_mipmap);
gen_mipmap = gm;
- if(get_gl_api()!=OPENGL_ES2)
+ if(!EXT_framebuffer_object)
update_parameter(GENERATE_MIPMAP);
}
void Texture::auto_generate_mipmap()
{
- if(get_gl_api()==OPENGL_ES2)
+ // glGenerateMipmap is defined here
+ if(EXT_framebuffer_object)
{
- // glGenerateMipmap is defined here
- static Require _req(EXT_framebuffer_object);
- glGenerateMipmap(target);
+ if(ARB_direct_state_access)
+ glGenerateTextureMipmap(id);
+ else
+ glGenerateMipmap(target);
}
}
update_parameter(COMPARE_FUNC);
}
+void Texture::load_image(const string &fn, bool srgb)
+{
+ Graphics::Image img;
+ img.load_file(fn);
+
+ image(img, srgb);
+}
+
void Texture::bind_to(unsigned i) const
{
if(!id)
else
srgb = false;
+ add("external_image", &Loader::external_image);
add("filter", &Loader::filter);
- add("max_anisotropy", &Loader::max_anisotropy);
add("generate_mipmap", &Loader::generate_mipmap);
+ add("image_data", &Loader::image_data);
add("mag_filter", &Loader::mag_filter);
+ add("max_anisotropy", &Loader::max_anisotropy);
add("min_filter", &Loader::min_filter);
add("wrap", &Loader::wrap);
add("wrap_r", &Loader::wrap_r);
add("wrap_t", &Loader::wrap_t);
}
+void Texture::Loader::external_image(const string &fn)
+{
+ Graphics::Image img;
+ RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
+ img.load_io(*io);
+
+ obj.image(img, srgb);
+}
+
void Texture::Loader::filter(TextureFilter f)
{
obj.set_filter(f);
obj.set_generate_mipmap(gm);
}
+void Texture::Loader::image_data(const string &data)
+{
+ Graphics::Image img;
+ IO::Memory mem(data.data(), data.size());
+ img.load_io(mem);
+
+ obj.image(img, srgb);
+}
+
void Texture::Loader::mag_filter(TextureFilter f)
{
obj.set_mag_filter(f);
obj.set_wrap_t(w);
}
+
+bool is_mipmapped(TextureFilter filter)
+{
+ return (filter==NEAREST_MIPMAP_NEAREST || filter==NEAREST_MIPMAP_LINEAR ||
+ filter==LINEAR_MIPMAP_NEAREST || filter==LINEAR_MIPMAP_LINEAR);
+}
+
} // namespace GL
} // namespace Msp