// andrewmac:
int nvgCreateImageBGFX(struct NVGcontext* ctx, int w, int h, int imageFlags, bgfx::TextureHandle texture)
{
struct NVGparams* params = nvgInternalParams(ctx);
struct GLNVGcontext* gl = (struct GLNVGcontext*)params->userPtr;
struct GLNVGtexture* tex = glnvg__allocTexture(gl);
if (tex == NULL)
{
return 0;
}
tex->width = w;
tex->height = h;
tex->type = NVG_TEXTURE_RGBA;
tex->flags = imageFlags;
tex->id = texture;
return tex->id.idx;
}
NVGLUframebuffer* nvgluCreateFramebuffer(NVGcontext* _ctx, int32_t _width, int32_t _height, int32_t _imageFlags)
{
BX_UNUSED(_imageFlags);
bgfx::TextureHandle textures[] =
{
bgfx::createTexture2D(_width, _height, false, 1, bgfx::TextureFormat::RGBA8, BGFX_TEXTURE_RT),
bgfx::createTexture2D(_width, _height, false, 1, bgfx::TextureFormat::D24S8, BGFX_TEXTURE_RT | BGFX_TEXTURE_RT_WRITE_ONLY)
};
bgfx::FrameBufferHandle fbh = bgfx::createFrameBuffer(
BX_COUNTOF(textures)
, textures
, true
);
if (!bgfx::isValid(fbh) )
{
return NULL;
}
struct NVGparams* params = nvgInternalParams(_ctx);
struct GLNVGcontext* gl = (struct GLNVGcontext*)params->userPtr;
struct GLNVGtexture* tex = glnvg__allocTexture(gl);
if (NULL == tex)
{
bgfx::destroy(fbh);
return NULL;
}
tex->width = _width;
tex->height = _height;
tex->type = NVG_TEXTURE_RGBA;
tex->flags = _imageFlags | NVG_IMAGE_PREMULTIPLIED;
tex->id = bgfx::getTexture(fbh);
NVGLUframebuffer* framebuffer = BX_NEW(gl->allocator, NVGLUframebuffer);
framebuffer->ctx = _ctx;
framebuffer->image = tex->id.idx;
framebuffer->handle = fbh;
return framebuffer;
}
static int glnvg__renderCreateTexture(void* uptr, int type, int w, int h, int imageFlags, const unsigned char* data)
{
GLNVGcontext* gl = (GLNVGcontext*)uptr;
GLNVGtexture* tex = glnvg__allocTexture(gl);
if (tex == NULL) return 0;
glGenTextures(1, &tex->tex);
tex->width = w;
tex->height = h;
tex->type = type;
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_ROW_LENGTH, tex->width);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
if (type == NVG_TEXTURE_RGBA)
glTextureImage2DEXT(tex->tex, GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
else
glTextureImage2DEXT(tex->tex, GL_TEXTURE_2D, 0, GL_RED, w, h, 0, GL_RED, GL_UNSIGNED_BYTE, data);
if (imageFlags & NVG_IMAGE_GENERATE_MIPMAPS) {
glTextureParameteriEXT(tex->tex, GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
} else {
glTextureParameteriEXT(tex->tex, GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
glTextureParameteriEXT(tex->tex, GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
// The new way to build mipmaps on GLES and GL3
if (imageFlags & NVG_IMAGE_GENERATE_MIPMAPS) {
glGenerateTextureMipmapEXT(tex->tex, GL_TEXTURE_2D);
}
return tex->id;
}
static int glnvg__renderCreateTexture(void* uptr, int type, int w, int h, int imageFlags, const unsigned char* data)
{
GLNVGcontext* gl = (GLNVGcontext*)uptr;
GLNVGtexture* tex = glnvg__allocTexture(gl);
if (tex == NULL) return 0;
const bool formatRGBA8 = type == NVG_TEXTURE_RGBA;
const bool useMipmaps = (imageFlags & NVG_IMAGE_GENERATE_MIPMAPS) != 0;
glCreateTextures(GL_TEXTURE_2D, 1, &tex->tex);
const uint32_t mipCount = useMipmaps ? bit_fls(core::max<uint32_t>(w, h)) : 1;
glTextureStorage2D(tex->tex, mipCount, formatRGBA8 ? GL_RGBA8 : GL_R8, w, h);
tex->width = w;
tex->height = h;
tex->type = type;
if (data)
{
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_ROW_LENGTH, tex->width);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glTextureSubImage2D(tex->tex, 0, 0, 0, w, h, formatRGBA8 ? GL_RGBA : GL_RED, GL_UNSIGNED_BYTE, data);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
// The new way to build mipmaps on GLES and GL3
if (useMipmaps) {
glGenerateTextureMipmap(tex->tex);
}
}
glTextureParameteri(tex->tex, GL_TEXTURE_MIN_FILTER, useMipmaps ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
glTextureParameteri(tex->tex, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
return tex->id;
}
