u32 installtex(const char *texname, bool clamp) {
auto s = IMG_Load(texname);
if (!s) {
con::out("couldn't load texture %s", texname);
return 0;
}
#if !defined(__WEBGL__)
else if (s->format->BitsPerPixel!=24) {
con::out("texture must be 24bpp: %s (got %i bpp)", texname, s->format->BitsPerPixel);
return 0;
}
#endif // __WEBGL__
loopi(int(TEX_NUM)) bindedtexture[i] = 0;
con::out("loading %s (%ix%i)", texname, s->w, s->h);
if (s->w>glmaxtexsize || s->h>glmaxtexsize)
sys::fatal("texture dimensions are too large");
const auto ispowerof2 = ispoweroftwo(s->w) && ispoweroftwo(s->h);
const auto minf = ispowerof2 ? 'M' : 'n';
const auto mm = ispowerof2 ? 'G' : ' ';
const auto fmt = s->format->BitsPerPixel == 24 ? '3' : '4';
const auto wrap = clamp ? 'e' : 'r';
auto id = maketex("TB I% D% B2 % Ws% Wt% Ml m%",fmt,fmt,s->pixels,s->w,s->h,mm,wrap,wrap,minf);
SDL_FreeSurface(s);
return id;
}
int FrameBufferObject::CreateImageObject(unsigned int width, unsigned int height,
int depthbuffer_enabled, int stencilbuffer_enabled)
{
//Create the Image object
ImageObject new_object;
new_object.width = width;
new_object.height = height;
new_object.texture_type = NULL;
new_object.texture_id = NULL;
new_object.depth_id = NULL;
new_object.stencil_id = NULL;
//First determine if the requested dimensions are power of two
if (ispoweroftwo(width) && ispoweroftwo(height))
{
new_object.texture_type = GL_TEXTURE_2D; //Power of two enum
LogSystem()->ReportMessage("Using GL_TEXTURE_2D");
}
else
{
new_object.texture_type = 0x84F5; //Non power of two enum
}
glGenTextures(1, &new_object.texture_id);
new_object.texture_id;
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, new_object.texture_id);
new_object.texture_type = GL_TEXTURE_RECTANGLE_ARB;
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);//GL_CLAMP
glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);//GL_CLAMP
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
//Create the depth RenderBuffer if requested
if (depthbuffer_enabled != 0)
{
glGenRenderbuffersEXT(1, &new_object.depth_id);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, new_object.depth_id);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, new_object.width, new_object.height);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebuffer_id);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, new_object.depth_id);
}
//glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
//Push this new image object onto the list
image_objects.push_back(new_object);
//Return the 'index' for the id of this texture
return (int)image_objects.size() - 1;
}
int FrameBufferObject::CreateImageObject(unsigned int width, unsigned int height, int depthbuffer_enabled, int stencilbuffer_enabled)
{
//Create the Image object
ImageObject new_object;
EH_DECLARE;
new_object.width = width;
new_object.height = height;
new_object.texture_type = NULL;
new_object.texture_id = NULL;
new_object.depth_id = NULL;
new_object.stencil_id = NULL;
EH_Log("CreateImageObject %d %d\n", width, height);
//First determine if the requested dimensions are power of two
if (ispoweroftwo(width) && ispoweroftwo(height))
{
new_object.texture_type = GL_TEXTURE_2D; //Power of two enum
EH_Log("Using GL_TEXTURE_2D");
}
else
{
new_object.texture_type = 0x84F5; //Non power of two enum
}
//Create texture
glGenTextures(1, &new_object.texture_id);
glBindTexture(new_object.texture_type, new_object.texture_id);
glTexImage2D(new_object.texture_type, 0, GL_RGBA, new_object.width, new_object.height, 0, GL_RGBA, GL_FLOAT, NULL);
//GLenum filterMode = (new_object.texture_type == 0x84F5) ? GL_NEAREST : GL_LINEAR;
//GLenum filterMode = GL_NEAREST;
GLfloat filterMode = GL_LINEAR;
glTexParameterf(new_object.texture_type, GL_TEXTURE_MIN_FILTER, filterMode);
glTexParameterf(new_object.texture_type, GL_TEXTURE_MAG_FILTER, filterMode);
glTexParameterf(new_object.texture_type, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);//GL_CLAMP
glTexParameterf(new_object.texture_type, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);//GL_CLAMP
#ifdef OM_MULTISAMPLE
if (1) {
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, framebuffer_id);
glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, 2, GL_RGBA8,
new_object.width, new_object.height);
CheckFramebufferStatus();
}
#endif
//Create the depth RenderBuffer if requested
if (depthbuffer_enabled != 0)
{
glGenRenderbuffersEXT(1, &new_object.depth_id);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, new_object.depth_id);
#ifdef OM_MULTISAMPLE
if (1) {
//samples=2, format=GL_DEPTH_COMPONENT24, width=256, height=256
glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, 2, GL_DEPTH_COMPONENT16,
new_object.width, new_object.height);
CheckFramebufferStatus();
} else
#endif
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT16, new_object.width, new_object.height);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebuffer_id);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT, new_object.depth_id);
//CheckFramebufferStatus();
}
//Create the stencil RenderBuffer if requested
if (stencilbuffer_enabled != 0)
{
glGenRenderbuffersEXT(1, &new_object.stencil_id);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, new_object.stencil_id);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_STENCIL_INDEX, new_object.width, new_object.height);
}
//Push this new image object onto the list
image_objects.push_back(new_object);
//Return the 'index' for the id of this texture
return (int)image_objects.size() - 1;
}
