Merge pull request #4092 from sanikoyes/Pr-etc1-pkm-loading

Add etc1(pkm) texture loading support
This commit is contained in:
Juan Linietsky 2016-06-06 22:14:11 -03:00
commit 0c985913a7
4 changed files with 118 additions and 1 deletions

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@ -3,7 +3,8 @@ Import('env')
etc_sources = [
"etc1/image_etc.cpp",
"etc1/rg_etc1.cpp"
"etc1/rg_etc1.cpp",
"etc1/texture_loader_pkm.cpp"
]
if (env["etc1"] != "no"):

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@ -0,0 +1,84 @@
#include "texture_loader_pkm.h"
#include "os/file_access.h"
#include <string.h>
struct ETC1Header {
char tag[6]; // "PKM 10"
uint16_t format; // Format == number of mips (== zero)
uint16_t texWidth; // Texture dimensions, multiple of 4 (big-endian)
uint16_t texHeight;
uint16_t origWidth; // Original dimensions (big-endian)
uint16_t origHeight;
};
RES ResourceFormatPKM::load(const String &p_path, const String& p_original_path, Error *r_error) {
if (r_error)
*r_error=ERR_CANT_OPEN;
Error err;
FileAccess *f = FileAccess::open(p_path,FileAccess::READ,&err);
if (!f)
return RES();
FileAccessRef fref(f);
if (r_error)
*r_error=ERR_FILE_CORRUPT;
ERR_EXPLAIN("Unable to open PKM texture file: "+p_path);
ERR_FAIL_COND_V(err!=OK,RES());
// big endian
f->set_endian_swap(true);
ETC1Header h;
ERR_EXPLAIN("Invalid or Unsupported PKM texture file: "+p_path);
f->get_buffer((uint8_t *) &h.tag, sizeof(h.tag));
if(strncmp(h.tag, "PKM 10", sizeof(h.tag)))
ERR_FAIL_V(RES());
h.format = f->get_16();
h.texWidth = f->get_16();
h.texHeight = f->get_16();
h.origWidth = f->get_16();
h.origHeight = f->get_16();
DVector<uint8_t> src_data;
uint32_t size = h.texWidth * h.texHeight / 2;
src_data.resize(size);
DVector<uint8_t>::Write wb = src_data.write();
f->get_buffer(wb.ptr(),size);
wb=DVector<uint8_t>::Write();
int mipmaps = h.format;
int width = h.origWidth;
int height = h.origHeight;
Image img(width,height,mipmaps,Image::FORMAT_ETC,src_data);
Ref<ImageTexture> texture = memnew( ImageTexture );
texture->create_from_image(img);
if (r_error)
*r_error=OK;
return texture;
}
void ResourceFormatPKM::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("pkm");
}
bool ResourceFormatPKM::handles_type(const String& p_type) const {
return ObjectTypeDB::is_type(p_type,"Texture");
}
String ResourceFormatPKM::get_resource_type(const String &p_path) const {
if (p_path.extension().to_lower()=="pkm")
return "ImageTexture";
return "";
}

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@ -0,0 +1,18 @@
#ifndef TEXTURE_LOADER_PKM_H
#define TEXTURE_LOADER_PKM_H
#include "scene/resources/texture.h"
#include "io/resource_loader.h"
class ResourceFormatPKM : public ResourceFormatLoader{
public:
virtual RES load(const String &p_path,const String& p_original_path="",Error *r_error=NULL);
virtual void get_recognized_extensions(List<String> *p_extensions) const;
virtual bool handles_type(const String& p_type) const;
virtual String get_resource_type(const String &p_path) const;
virtual ~ResourceFormatPKM() {}
};
#endif // TEXTURE_LOADER_PKM_H

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@ -16,6 +16,7 @@
#include "png/resource_saver_png.h"
#include "jpegd/image_loader_jpegd.h"
#include "dds/texture_loader_dds.h"
#include "etc1/texture_loader_pkm.h"
#include "pvr/texture_loader_pvr.h"
#include "etc1/image_etc.h"
#include "chibi/event_stream_chibi.h"
@ -79,6 +80,10 @@ static ImageLoaderJPG *image_loader_jpg=NULL;
static ResourceFormatDDS *resource_loader_dds=NULL;
#endif
#ifdef ETC1_ENABLED
static ResourceFormatPKM *resource_loader_pkm=NULL;
#endif
#ifdef PVR_ENABLED
static ResourceFormatPVR *resource_loader_pvr=NULL;
@ -199,6 +204,11 @@ void register_driver_types() {
ResourceLoader::add_resource_format_loader(resource_loader_dds );
#endif
#ifdef ETC1_ENABLED
resource_loader_pkm = memnew( ResourceFormatPKM );
ResourceLoader::add_resource_format_loader(resource_loader_pkm);
#endif
#ifdef PVR_ENABLED
resource_loader_pvr = memnew( ResourceFormatPVR );
ResourceLoader::add_resource_format_loader(resource_loader_pvr );
@ -283,6 +293,10 @@ void unregister_driver_types() {
memdelete(resource_loader_dds);
#endif
#ifdef ETC1_ENABLED
memdelete(resource_loader_pkm);
#endif
#ifdef PVR_ENABLED
memdelete(resource_loader_pvr);
#endif