Initial commit of libAgl2 using Pixelflinger2 in external/mesa3d

Somewhat functional, refer to README for details.
Need to enable Android.mk to build.
It builds libGLES_android.so, which needs to replace
 the one in system/lib/egl built by libagl.

Change-Id: Iec3aaa8f3963a4185d81955cd24019eb0c4a5850
Signed-off-by: David Li <davidxli@google.com>

1 files changed, 534 insertions, 0 deletions

diff --git a/opengl/libagl2/src/texture.cpp b/opengl/libagl2/src/texture.cpp
new file mode 100644
index 0000000..4de1f16
--- /dev/null
+++ b/opengl/libagl2/src/texture.cpp
@@ -0,0 +1,534 @@
+#include "gles2context.h"
+
+//#undef LOGD
+//#define LOGD(...) 
+
+#define API_ENTRY
+#define CALL_GL_API(NAME,...) LOGD("?"#NAME); assert(0);
+#define CALL_GL_API_RETURN(NAME,...) LOGD("?"#NAME); assert(0); return 0;
+
+static inline GGLTexture * AllocTexture()
+{
+   GGLTexture * tex = (GGLTexture *)calloc(1, sizeof(GGLTexture));
+   tex->minFilter = GGLTexture::GGL_LINEAR; // should be NEAREST_ MIPMAP_LINEAR
+   tex->magFilter = GGLTexture::GGL_LINEAR;
+   return tex;
+}
+
+void GLES2Context::InitializeTextures()
+{
+   tex.textures = std::map<GLuint, GGLTexture *>(); // the entire struct has been zeroed in constructor
+   tex.tex2D = AllocTexture();
+   tex.textures[GL_TEXTURE_2D] = tex.tex2D;
+   tex.texCube = AllocTexture();
+   tex.textures[GL_TEXTURE_CUBE_MAP] = tex.texCube;
+   for (unsigned i = 0; i < GGL_MAXCOMBINEDTEXTUREIMAGEUNITS; i++) {
+      tex.tmus[i] = NULL;
+      tex.sampler2tmu[i] = NULL;
+   }
+
+   tex.active = 0;
+
+   tex.free = max(GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP) + 1;
+
+   tex.tex2D->format = GGL_PIXEL_FORMAT_RGBA_8888;
+   tex.tex2D->type = GL_TEXTURE_2D;
+   tex.tex2D->levelCount = 1;
+   tex.tex2D->wrapS = tex.tex2D->wrapT = GGLTexture::GGL_REPEAT;
+   tex.tex2D->minFilter = tex.tex2D->magFilter = GGLTexture::GGL_NEAREST;
+   tex.tex2D->width = tex.tex2D->height = 1;
+   tex.tex2D->levels = malloc(4);
+   *(unsigned *)tex.tex2D->levels = 0xff000000;
+
+
+   tex.texCube->format = GGL_PIXEL_FORMAT_RGBA_8888;
+   tex.texCube->type = GL_TEXTURE_CUBE_MAP;
+   tex.texCube->levelCount = 1;
+   tex.texCube->wrapS = tex.texCube->wrapT = GGLTexture::GGL_REPEAT;
+   tex.texCube->minFilter = tex.texCube->magFilter = GGLTexture::GGL_NEAREST;
+   tex.texCube->width = tex.texCube->height = 1;
+   tex.texCube->levels = malloc(4 * 6);
+   static unsigned texels [6] = {0xff0000ff, 0xff00ff00, 0xffff0000,
+                                 0xff00ffff, 0xffffff00, 0xffff00ff
+                                };
+   memcpy(tex.texCube->levels, texels, sizeof texels);
+
+   //texture.levelCount = GenerateMipmaps(texture.levels, texture.width, texture.height);
+
+   //    static unsigned texels [6] = {0xff0000ff, 0xff00ff00, 0xffff0000,
+   //    0xff00ffff, 0xffffff00, 0xffff00ff};
+   //    memcpy(texture.levels[0], texels, sizeof texels);
+   //    texture.format = GGL_PIXEL_FORMAT_RGBA_8888;
+   //    texture.width = texture.height = 1;
+   //texture.height /= 6;
+   //texture.type = GL_TEXTURE_CUBE_MAP;
+   
+   tex.unpack = 4;
+}
+
+void GLES2Context::TextureState::UpdateSampler(GGLInterface * iface, unsigned tmu)
+{
+   for (unsigned i = 0; i < GGL_MAXCOMBINEDTEXTUREIMAGEUNITS; i++)
+      if (tmu == sampler2tmu[i])
+         iface->SetSampler(iface, i, tmus[tmu]);
+}
+
+void GLES2Context::UninitializeTextures()
+{
+   for (std::map<GLuint, GGLTexture *>::iterator it = tex.textures.begin(); it != tex.textures.end(); it++) {
+      if (!it->second)
+         continue;
+      free(it->second->levels);
+      free(it->second);
+   }
+}
+
+static inline void GetFormatAndBytesPerPixel(const GLenum format, unsigned * bytesPerPixel,
+      GGLPixelFormat * texFormat)
+{
+   switch (format) {
+   case GL_ALPHA:
+      *texFormat = GGL_PIXEL_FORMAT_A_8;
+      *bytesPerPixel = 1;
+      break;
+   case GL_LUMINANCE:
+      *texFormat = GGL_PIXEL_FORMAT_L_8;
+      *bytesPerPixel = 1;
+      break;
+   case GL_LUMINANCE_ALPHA:
+      *texFormat = GGL_PIXEL_FORMAT_LA_88;
+      *bytesPerPixel = 2;
+      break;
+   case GL_RGB:
+      *texFormat = GGL_PIXEL_FORMAT_RGB_888;
+      *bytesPerPixel = 3;
+      break;
+   case GL_RGBA:
+      *texFormat = GGL_PIXEL_FORMAT_RGBA_8888;
+      *bytesPerPixel = 4;
+      break;
+
+      // internal formats to avoid conversion
+   case GL_UNSIGNED_SHORT_5_6_5:
+      *texFormat = GGL_PIXEL_FORMAT_RGB_565;
+      *bytesPerPixel = 2;
+      break;
+
+   default:
+      assert(0);
+      return;
+   }
+}
+
+static inline void CopyTexture(char * dst, const char * src, const unsigned bytesPerPixel,
+                               const unsigned sx, const unsigned sy,  const unsigned sw,
+                               const unsigned dx, const unsigned dy, const unsigned dw,
+                               const unsigned w, const unsigned h)
+{
+   const unsigned bpp = bytesPerPixel;
+   if (dw == sw && dw == w && sx == 0 && dx == 0)
+      memcpy(dst + dy * dw * bpp, src + sy * sw * bpp, w * h * bpp);
+   else
+      for (unsigned y = 0; y < h; y++)
+         memcpy(dst + ((dy + y) * dw + dx) * bpp, src + ((sy + y) * sw + sx) * bpp, w * bpp); 
+}
+
+void glActiveTexture(GLenum texture)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+   unsigned index = texture - GL_TEXTURE0;
+   assert(NELEM(ctx->tex.tmus) > index);
+//   LOGD("agl2: glActiveTexture %u", index);
+   ctx->tex.active = index;
+}
+
+void glBindTexture(GLenum target, GLuint texture)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+//   LOGD("agl2: glBindTexture target=0x%.4X texture=%u active=%u", target, texture, ctx->tex.active);
+   std::map<GLuint, GGLTexture *>::iterator it = ctx->tex.textures.find(texture);
+   GGLTexture * tex = NULL;
+   if (it != ctx->tex.textures.end()) {
+      tex = it->second;
+      if (!tex) {
+         tex = AllocTexture();
+         tex->type = target;
+         it->second = tex;
+//         LOGD("agl2: glBindTexture allocTexture");
+      }
+//      else
+//         LOGD("agl2: glBindTexture bind existing texture");
+      assert(target == tex->type);
+   } else if (0 == texture) {
+      if (GL_TEXTURE_2D == target)
+      {
+         tex = ctx->tex.tex2D;
+//         LOGD("agl2: glBindTexture bind default tex2D");
+      }
+      else if (GL_TEXTURE_CUBE_MAP == target)
+      {
+         tex = ctx->tex.texCube;
+//         LOGD("agl2: glBindTexture bind default texCube");
+      }
+      else
+         assert(0);
+   } else {
+      if (texture <= ctx->tex.free)
+         ctx->tex.free = texture + 1;
+      tex = AllocTexture();
+      tex->type = target;
+      ctx->tex.textures[texture] = tex;
+//      LOGD("agl2: glBindTexture new texture=%u", texture);
+   }
+   ctx->tex.tmus[ctx->tex.active] = tex;
+//   LOGD("agl2: glBindTexture format=0x%.2X w=%u h=%u levels=%p", tex->format,
+//      tex->width, tex->height, tex->levels);
+   ctx->tex.UpdateSampler(ctx->iface, ctx->tex.active);
+}
+
+void API_ENTRY(glCompressedTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid* data)
+{
+   CALL_GL_API(glCompressedTexImage2D, target, level, internalformat, width, height, border, imageSize, data);
+}
+
+void API_ENTRY(glCompressedTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid* data)
+{
+   CALL_GL_API(glCompressedTexSubImage2D, target, level, xoffset, yoffset, width, height, format, imageSize, data);
+}
+
+void glCopyTexImage2D(GLenum target, GLint level, GLenum internalformat,
+                      GLint x, GLint y, GLsizei width, GLsizei height, GLint border)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+//   LOGD("agl2: glCopyTexImage2D target=0x%.4X internalformat=0x%.4X", target, internalformat);
+//   LOGD("x=%d y=%d width=%d height=%d border=%d level=%d ", x, y, width, height, border, level);
+   assert(0 == border);
+   assert(0 == level);
+   unsigned bytesPerPixel = 0;
+   GGLPixelFormat texFormat = GGL_PIXEL_FORMAT_UNKNOWN;
+   GetFormatAndBytesPerPixel(internalformat, &bytesPerPixel, &texFormat);
+
+   assert(texFormat == ctx->rasterizer.frameSurface.format);
+//   LOGD("texFormat=0x%.2X bytesPerPixel=%d \n", texFormat, bytesPerPixel);
+   unsigned offset = 0, size = width * height * bytesPerPixel, totalSize = size;
+
+   assert(ctx->tex.tmus[ctx->tex.active]);
+   assert(y + height <= ctx->rasterizer.frameSurface.height);
+   assert(x + width <= ctx->rasterizer.frameSurface.width);
+   GGLTexture & tex = *ctx->tex.tmus[ctx->tex.active];
+   tex.width = width;
+   tex.height = height;
+   tex.levelCount = 1;
+   tex.format = texFormat;
+   switch (target) {
+   case GL_TEXTURE_2D:
+      tex.levels = realloc(tex.levels, totalSize);
+      CopyTexture((char *)tex.levels, (const char *)ctx->rasterizer.frameSurface.data, bytesPerPixel,
+                  x, y, ctx->rasterizer.frameSurface.width, 0, 0, width, width, height);
+      break;
+   default:
+      assert(0);
+      return;
+   }
+   ctx->tex.UpdateSampler(ctx->iface, ctx->tex.active);
+}
+
+void glCopyTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height)
+{
+   // x, y are src offset
+   // xoffset and yoffset are dst offset
+   GLES2_GET_CONST_CONTEXT(ctx);
+//   LOGD("agl2: glCopyTexSubImage2D target=0x%.4X level=%d", target, level);
+//   LOGD("xoffset=%d yoffset=%d x=%d y=%d width=%d height=%d", xoffset, yoffset, x, y, width, height);
+   assert(0 == level);
+
+   unsigned bytesPerPixel = 4;
+   unsigned offset = 0, size = width * height * bytesPerPixel, totalSize = size;
+
+   assert(ctx->tex.tmus[ctx->tex.active]);
+   GGLTexture & tex = *ctx->tex.tmus[ctx->tex.active];
+
+   assert(tex.format == ctx->rasterizer.frameSurface.format);
+   assert(GGL_PIXEL_FORMAT_RGBA_8888 == tex.format);
+
+   const unsigned srcWidth = ctx->rasterizer.frameSurface.width;
+   const unsigned srcHeight = ctx->rasterizer.frameSurface.height;
+
+   assert(x >= 0 && y >= 0);
+   assert(xoffset >= 0 && yoffset >= 0);
+   assert(x + width <= srcWidth);
+   assert(y + height <= srcHeight);
+   assert(xoffset + width <= tex.width);
+   assert(yoffset + height <= tex.height);
+
+   switch (target) {
+   case GL_TEXTURE_2D:
+      CopyTexture((char *)tex.levels, (const char *)ctx->rasterizer.frameSurface.data, bytesPerPixel,
+                  x, y, srcWidth, xoffset, yoffset, tex.width, width, height);
+      break;
+   default:
+      assert(0);
+      return;
+   }
+   ctx->tex.UpdateSampler(ctx->iface, ctx->tex.active);
+}
+
+void glDeleteTextures(GLsizei n, const GLuint* textures)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+   for (unsigned i = 0; i < n; i++) {
+      std::map<GLuint, GGLTexture *>::iterator it = ctx->tex.textures.find(textures[i]);
+      if (it == ctx->tex.textures.end())
+         continue;
+      ctx->tex.free = min(ctx->tex.free, textures[i]);
+      for (unsigned i = 0; i <  GGL_MAXCOMBINEDTEXTUREIMAGEUNITS; i++)
+         if (ctx->tex.tmus[i] == it->second) {
+            if (GL_TEXTURE_2D == it->second->type)
+               ctx->tex.tmus[i] = ctx->tex.tex2D;
+            else if (GL_TEXTURE_CUBE_MAP == it->second->type)
+               ctx->tex.tmus[i] = ctx->tex.texCube;
+            else
+               assert(0);
+            ctx->tex.UpdateSampler(ctx->iface, i);
+         }
+      if (it->second) {
+         free(it->second->levels);
+         free(it->second);
+      }
+      ctx->tex.textures.erase(it);
+   }
+}
+
+void glGenTextures(GLsizei n, GLuint* textures)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+   for (unsigned i = 0; i < n; i++) {
+      textures[i] = 0;
+      for (ctx->tex.free; ctx->tex.free < 0xffffffffu; ctx->tex.free++)
+         if (ctx->tex.textures.find(ctx->tex.free) == ctx->tex.textures.end()) {
+            ctx->tex.textures[ctx->tex.free] = NULL;
+            textures[i] = ctx->tex.free;
+            ctx->tex.free++;
+            break;
+         }
+      assert(textures[i]);
+   }
+}
+
+void API_ENTRY(glGetTexParameterfv)(GLenum target, GLenum pname, GLfloat* params)
+{
+   CALL_GL_API(glGetTexParameterfv, target, pname, params);
+}
+void API_ENTRY(glGetTexParameteriv)(GLenum target, GLenum pname, GLint* params)
+{
+   CALL_GL_API(glGetTexParameteriv, target, pname, params);
+}
+
+GLboolean glIsTexture(GLuint texture)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+   if (ctx->tex.textures.find(texture) == ctx->tex.textures.end())
+      return GL_FALSE;
+   else
+      return GL_TRUE;
+}
+
+void glPixelStorei(GLenum pname, GLint param)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+   assert(GL_UNPACK_ALIGNMENT == pname);
+   assert(1 == param || 2 == param || 4 == param || 8 == param);
+//   LOGD("\n*\n* agl2: glPixelStorei not implemented pname=0x%.4X param=%d \n*", pname, param);
+   ctx->tex.unpack = param;
+//   CALL_GL_API(glPixelStorei, pname, param);
+}
+void glTexImage2D(GLenum target, GLint level, GLint internalformat, GLsizei width,
+                  GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid* pixels)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+//   LOGD("agl2: glTexImage2D internalformat=0x%.4X format=0x%.4X type=0x%.4X \n", internalformat, format, type);
+//   LOGD("width=%d height=%d border=%d level=%d pixels=%p \n", width, height, border, level, pixels);
+   switch (type) {
+   case GL_UNSIGNED_BYTE:
+      break;
+   case GL_UNSIGNED_SHORT_5_6_5:
+      internalformat = format = GL_UNSIGNED_SHORT_5_6_5;
+      assert(4 == ctx->tex.unpack);
+      break;
+   default:
+      assert(0);
+   }
+   assert(internalformat == format);
+   assert(0 == border);
+   if (0 != level) {
+      LOGD("agl2: glTexImage2D level=%d", level);
+      return;
+   }
+   unsigned bytesPerPixel = 0;
+   GGLPixelFormat texFormat = GGL_PIXEL_FORMAT_UNKNOWN;
+   GetFormatAndBytesPerPixel(format, &bytesPerPixel, &texFormat);
+
+   assert(texFormat && bytesPerPixel);
+//   LOGD("texFormat=0x%.2X bytesPerPixel=%d active=%u", texFormat, bytesPerPixel, ctx->tex.active);
+   unsigned offset = 0, size = width * height * bytesPerPixel, totalSize = size;
+
+   assert(ctx->tex.tmus[ctx->tex.active]);
+
+   GGLTexture & tex = *ctx->tex.tmus[ctx->tex.active];
+   tex.width = width;
+   tex.height = height;
+   tex.levelCount = 1;
+   tex.format = texFormat;
+
+   switch (target) {
+   case GL_TEXTURE_2D:
+      assert(GL_TEXTURE_2D == ctx->tex.tmus[ctx->tex.active]->type);
+      offset = 0;
+      break;
+      break;
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+      assert(GL_TEXTURE_CUBE_MAP == ctx->tex.tmus[ctx->tex.active]->type);
+      assert(width == height);
+      offset = (target - GL_TEXTURE_CUBE_MAP_POSITIVE_X) * size;
+      totalSize = 6 * size;
+      break;
+   default:
+      assert(0);
+      return;
+   }
+
+   tex.levels = realloc(tex.levels, totalSize);
+   if (pixels)
+      CopyTexture((char *)tex.levels, (const char *)pixels, bytesPerPixel, 0, 0, width, 0, 0, width, width, height);
+   ctx->tex.UpdateSampler(ctx->iface, ctx->tex.active);
+}
+
+void glTexParameterf(GLenum target, GLenum pname, GLfloat param)
+{
+//   LOGD("agl2: glTexParameterf target=0x%.4X pname=0x%.4X param=%f", target, pname, param);
+   glTexParameteri(target, pname, param);
+}
+void API_ENTRY(glTexParameterfv)(GLenum target, GLenum pname, const GLfloat* params)
+{
+   CALL_GL_API(glTexParameterfv, target, pname, params);
+}
+void glTexParameteri(GLenum target, GLenum pname, GLint param)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+//   LOGD("alg2: glTexParameteri target=0x%.0X pname=0x%.4X param=0x%.4X",
+//        target, pname, param);
+   assert(ctx->tex.tmus[ctx->tex.active]);
+   assert(target == ctx->tex.tmus[ctx->tex.active]->type);
+   GGLTexture & tex = *ctx->tex.tmus[ctx->tex.active];
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+   case GL_TEXTURE_WRAP_T:
+      GGLTexture::GGLTextureWrap wrap;
+      switch (param) {
+      case GL_REPEAT:
+         wrap = GGLTexture::GGL_REPEAT;
+         break;
+      case GL_CLAMP_TO_EDGE:
+         wrap = GGLTexture::GGL_CLAMP_TO_EDGE;
+         break;
+      case GL_MIRRORED_REPEAT:
+         wrap = GGLTexture::GGL_MIRRORED_REPEAT;
+         break;
+      default:
+         assert(0);
+         return;
+      }
+      if (GL_TEXTURE_WRAP_S == pname)
+         tex.wrapS = wrap;
+      else
+         tex.wrapT = wrap;
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      switch (param) {
+      case GL_NEAREST:
+         tex.minFilter = GGLTexture::GGL_NEAREST;
+         break;
+      case GL_LINEAR:
+         tex.minFilter = GGLTexture::GGL_LINEAR;
+         break;
+      case GL_NEAREST_MIPMAP_NEAREST:
+//         tex.minFilter = GGLTexture::GGL_NEAREST_MIPMAP_NEAREST;
+         break;
+      case GL_NEAREST_MIPMAP_LINEAR:
+//         tex.minFilter = GGLTexture::GGL_NEAREST_MIPMAP_LINEAR;
+         break;
+      case GL_LINEAR_MIPMAP_NEAREST:
+//         tex.minFilter = GGLTexture::GGL_LINEAR_MIPMAP_NEAREST;
+         break;
+      case GL_LINEAR_MIPMAP_LINEAR:
+//         tex.minFilter = GGLTexture::GGL_LINEAR_MIPMAP_LINEAR;
+         break;
+      default:
+         assert(0);
+         return;
+      }
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      switch (param) {
+      case GL_NEAREST:
+         tex.minFilter = GGLTexture::GGL_NEAREST;
+         break;
+      case GL_LINEAR:
+         tex.minFilter = GGLTexture::GGL_LINEAR;
+         break;
+      default:
+         assert(0);
+         return;
+      }
+      break;
+   default:
+      assert(0);
+      return;
+   }
+   // implementation restriction
+   if (tex.magFilter != tex.minFilter)
+      tex.magFilter = tex.minFilter = GGLTexture::GGL_LINEAR;
+   ctx->tex.UpdateSampler(ctx->iface, ctx->tex.active);
+}
+void API_ENTRY(glTexParameteriv)(GLenum target, GLenum pname, const GLint* params)
+{
+   CALL_GL_API(glTexParameteriv, target, pname, params);
+}
+void glTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid* pixels)
+{
+   GLES2_GET_CONST_CONTEXT(ctx);
+//   LOGD("agl2: glTexSubImage2D target=0x%.4X level=%d xoffset=%d yoffset=%d width=%d height=%d format=0x%.4X type=0x%.4X pixels=%p",
+//        target, level, xoffset, yoffset, width, height, format, type, pixels);
+   assert(0 == level);
+   assert(target == ctx->tex.tmus[ctx->tex.active]->type);
+   switch (type) {
+   case GL_UNSIGNED_BYTE:
+      break;
+   case GL_UNSIGNED_SHORT_5_6_5:
+      format = GL_UNSIGNED_SHORT_5_6_5;
+      assert(4 == ctx->tex.unpack);
+      break;
+   default:
+      assert(0);
+   }
+   GGLTexture & tex = *ctx->tex.tmus[ctx->tex.active];
+   GGLPixelFormat texFormat = GGL_PIXEL_FORMAT_UNKNOWN;
+   unsigned bytesPerPixel = 0;
+   GetFormatAndBytesPerPixel(format, &bytesPerPixel, &texFormat);
+   assert(texFormat == tex.format);
+   assert(GL_UNSIGNED_BYTE == type);
+   switch (target) {
+   case GL_TEXTURE_2D:
+      CopyTexture((char *)tex.levels, (const char *)pixels, bytesPerPixel, 0, 0, width, xoffset,
+                  yoffset, tex.width, width, height);
+      break;
+   default:
+      assert(0);
+   }
+   ctx->tex.UpdateSampler(ctx->iface, ctx->tex.active);
+}