libs/rs/driver/rsdAllocation.cpp - SHIFTPHONES/android_frameworks_base - Gitiles

 /*
  * Copyright (C) 2011 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */


 #include "rsdCore.h"
 #include "rsdBcc.h"
 #include "rsdRuntime.h"
 #include "rsdAllocation.h"

 #include "rsAllocation.h"

 #include <GLES/gl.h>
 #include <GLES2/gl2.h>
 #include <GLES/glext.h>

 using namespace android;
 using namespace android::renderscript;


 const static GLenum gFaceOrder[] = {
     GL_TEXTURE_CUBE_MAP_POSITIVE_X,
     GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
     GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
     GL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
     GL_TEXTURE_CUBE_MAP_POSITIVE_Z,
     GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
 };


 GLenum rsdTypeToGLType(RsDataType t) {
     switch (t) {
     case RS_TYPE_UNSIGNED_5_6_5:    return GL_UNSIGNED_SHORT_5_6_5;
     case RS_TYPE_UNSIGNED_5_5_5_1:  return GL_UNSIGNED_SHORT_5_5_5_1;
     case RS_TYPE_UNSIGNED_4_4_4_4:  return GL_UNSIGNED_SHORT_4_4_4_4;

     //case RS_TYPE_FLOAT_16:      return GL_HALF_FLOAT;
     case RS_TYPE_FLOAT_32:      return GL_FLOAT;
     case RS_TYPE_UNSIGNED_8:    return GL_UNSIGNED_BYTE;
     case RS_TYPE_UNSIGNED_16:   return GL_UNSIGNED_SHORT;
     case RS_TYPE_SIGNED_8:      return GL_BYTE;
     case RS_TYPE_SIGNED_16:     return GL_SHORT;
     default:    break;
     }
     return 0;
 }

 GLenum rsdKindToGLFormat(RsDataKind k) {
     switch (k) {
     case RS_KIND_PIXEL_L: return GL_LUMINANCE;
     case RS_KIND_PIXEL_A: return GL_ALPHA;
     case RS_KIND_PIXEL_LA: return GL_LUMINANCE_ALPHA;
     case RS_KIND_PIXEL_RGB: return GL_RGB;
     case RS_KIND_PIXEL_RGBA: return GL_RGBA;
     case RS_KIND_PIXEL_DEPTH: return GL_DEPTH_COMPONENT16;
     default: break;
     }
     return 0;
 }


 static void Update2DTexture(const Allocation *alloc, const void *ptr, uint32_t xoff, uint32_t yoff,
                      uint32_t lod, RsAllocationCubemapFace face,
                      uint32_t w, uint32_t h) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     rsAssert(drv->textureID);
     glBindTexture(drv->glTarget, drv->textureID);
     glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
     GLenum t = GL_TEXTURE_2D;
     if (alloc->mHal.state.hasFaces) {
         t = gFaceOrder[face];
     }
     glTexSubImage2D(t, lod, xoff, yoff, w, h, drv->glFormat, drv->glType, ptr);
 }


 static void Upload2DTexture(const Context *rsc, const Allocation *alloc, bool isFirstUpload) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     glBindTexture(drv->glTarget, drv->textureID);
     glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

     uint32_t faceCount = 1;
     if (alloc->mHal.state.hasFaces) {
         faceCount = 6;
     }

     rsdGLCheckError(rsc, "Upload2DTexture 1 ");
     for (uint32_t face = 0; face < faceCount; face ++) {
         for (uint32_t lod = 0; lod < alloc->mHal.state.type->getLODCount(); lod++) {
             const uint8_t *p = (const uint8_t *)drv->mallocPtr;
             p += alloc->mHal.state.type->getLODFaceOffset(lod, (RsAllocationCubemapFace)face, 0, 0);

             GLenum t = GL_TEXTURE_2D;
             if (alloc->mHal.state.hasFaces) {
                 t = gFaceOrder[face];
             }

             if (isFirstUpload) {
                 glTexImage2D(t, lod, drv->glFormat,
                              alloc->mHal.state.type->getLODDimX(lod),
                              alloc->mHal.state.type->getLODDimY(lod),
                              0, drv->glFormat, drv->glType, p);
             } else {
                 glTexSubImage2D(t, lod, 0, 0,
                                 alloc->mHal.state.type->getLODDimX(lod),
                                 alloc->mHal.state.type->getLODDimY(lod),
                                 drv->glFormat, drv->glType, p);
             }
         }
     }

     if (alloc->mHal.state.mipmapControl == RS_ALLOCATION_MIPMAP_ON_SYNC_TO_TEXTURE) {
         glGenerateMipmap(drv->glTarget);
     }
     rsdGLCheckError(rsc, "Upload2DTexture");
 }

 static void UploadToTexture(const Context *rsc, const Allocation *alloc) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     if (!drv->glType || !drv->glFormat) {
         return;
     }

     if (!alloc->getPtr()) {
         return;
     }

     bool isFirstUpload = false;

     if (!drv->textureID) {
         glGenTextures(1, &drv->textureID);
         isFirstUpload = true;
     }

     Upload2DTexture(rsc, alloc, isFirstUpload);

     if (!(alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_SCRIPT)) {
         if (drv->mallocPtr) {
             free(drv->mallocPtr);
             drv->mallocPtr = NULL;
         }
     }
     rsdGLCheckError(rsc, "UploadToTexture");
 }

 static void AllocateRenderTarget(const Context *rsc, const Allocation *alloc) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     if (!drv->glFormat) {
         return;
     }

     if (!drv->renderTargetID) {
         glGenRenderbuffers(1, &drv->renderTargetID);

         if (!drv->renderTargetID) {
             // This should generally not happen
             LOGE("allocateRenderTarget failed to gen mRenderTargetID");
             rsc->dumpDebug();
             return;
         }
         glBindRenderbuffer(GL_RENDERBUFFER, drv->renderTargetID);
         glRenderbufferStorage(GL_RENDERBUFFER, drv->glFormat,
                               alloc->mHal.state.dimensionX, alloc->mHal.state.dimensionY);
     }
     rsdGLCheckError(rsc, "AllocateRenderTarget");
 }

 static void UploadToBufferObject(const Context *rsc, const Allocation *alloc) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     rsAssert(!alloc->mHal.state.type->getDimY());
     rsAssert(!alloc->mHal.state.type->getDimZ());

     //alloc->mHal.state.usageFlags |= RS_ALLOCATION_USAGE_GRAPHICS_VERTEX;

     if (!drv->bufferID) {
         glGenBuffers(1, &drv->bufferID);
     }
     if (!drv->bufferID) {
         LOGE("Upload to buffer object failed");
         drv->uploadDeferred = true;
         return;
     }
     glBindBuffer(drv->glTarget, drv->bufferID);
     glBufferData(drv->glTarget, alloc->mHal.state.type->getSizeBytes(),
                  drv->mallocPtr, GL_DYNAMIC_DRAW);
     glBindBuffer(drv->glTarget, 0);
     rsdGLCheckError(rsc, "UploadToBufferObject");
 }

 bool rsdAllocationInit(const Context *rsc, Allocation *alloc, bool forceZero) {
     DrvAllocation *drv = (DrvAllocation *)calloc(1, sizeof(DrvAllocation));
     if (!drv) {
         return false;
     }

     void * ptr = malloc(alloc->mHal.state.type->getSizeBytes());
     if (!ptr) {
         free(drv);
         return false;
     }

     drv->glTarget = GL_NONE;
     if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_TEXTURE) {
         if (alloc->mHal.state.hasFaces) {
             drv->glTarget = GL_TEXTURE_CUBE_MAP;
         } else {
             drv->glTarget = GL_TEXTURE_2D;
         }
     } else {
         if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_VERTEX) {
             drv->glTarget = GL_ARRAY_BUFFER;
         }
     }

     drv->glType = rsdTypeToGLType(alloc->mHal.state.type->getElement()->getComponent().getType());
     drv->glFormat = rsdKindToGLFormat(alloc->mHal.state.type->getElement()->getComponent().getKind());


     alloc->mHal.drvState.mallocPtr = ptr;
     drv->mallocPtr = (uint8_t *)ptr;
     alloc->mHal.drv = drv;
     if (forceZero) {
         memset(ptr, 0, alloc->mHal.state.type->getSizeBytes());
     }

     if (alloc->mHal.state.usageFlags & ~RS_ALLOCATION_USAGE_SCRIPT) {
         drv->uploadDeferred = true;
     }
     return true;
 }

 void rsdAllocationDestroy(const Context *rsc, Allocation *alloc) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     if (drv->bufferID) {
         // Causes a SW crash....
         //LOGV(" mBufferID %i", mBufferID);
         //glDeleteBuffers(1, &mBufferID);
         //mBufferID = 0;
     }
     if (drv->textureID) {
         glDeleteTextures(1, &drv->textureID);
         drv->textureID = 0;
     }
     if (drv->renderTargetID) {
         glDeleteRenderbuffers(1, &drv->renderTargetID);
         drv->renderTargetID = 0;
     }

     if (drv->mallocPtr) {
         free(drv->mallocPtr);
         drv->mallocPtr = NULL;
     }
     free(drv);
     alloc->mHal.drv = NULL;
 }

 void rsdAllocationResize(const Context *rsc, const Allocation *alloc,
                          const Type *newType, bool zeroNew) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     drv->mallocPtr = (uint8_t *)realloc(drv->mallocPtr, newType->getSizeBytes());

     // fixme
     ((Allocation *)alloc)->mHal.drvState.mallocPtr = drv->mallocPtr;

     const uint32_t oldDimX = alloc->mHal.state.dimensionX;
     const uint32_t dimX = newType->getDimX();

     if (dimX > oldDimX) {
         const Element *e = alloc->mHal.state.type->getElement();
         uint32_t stride = e->getSizeBytes();
         memset(((uint8_t *)drv->mallocPtr) + stride * oldDimX, 0, stride * (dimX - oldDimX));
     }
 }


 void rsdAllocationSyncAll(const Context *rsc, const Allocation *alloc,
                          RsAllocationUsageType src) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     if (!drv->uploadDeferred) {
         return;
     }

     rsAssert(src == RS_ALLOCATION_USAGE_SCRIPT);

     if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_TEXTURE) {
         UploadToTexture(rsc, alloc);
     } else {
         if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_RENDER_TARGET) {
             AllocateRenderTarget(rsc, alloc);
         }
     }
     if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_VERTEX) {
         UploadToBufferObject(rsc, alloc);
     }

     drv->uploadDeferred = false;
 }

 void rsdAllocationMarkDirty(const Context *rsc, const Allocation *alloc) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;
     drv->uploadDeferred = true;
 }

 void rsdAllocationData1D(const Context *rsc, const Allocation *alloc,
                          uint32_t xoff, uint32_t lod, uint32_t count,
                          const void *data, uint32_t sizeBytes) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     const uint32_t eSize = alloc->mHal.state.type->getElementSizeBytes();
     uint8_t * ptr = drv->mallocPtr;
     ptr += eSize * xoff;
     uint32_t size = count * eSize;

     if (alloc->mHal.state.hasReferences) {
         alloc->incRefs(data, count);
         alloc->decRefs(ptr, count);
     }

     memcpy(ptr, data, size);
     drv->uploadDeferred = true;
 }

 void rsdAllocationData2D(const Context *rsc, const Allocation *alloc,
                          uint32_t xoff, uint32_t yoff, uint32_t lod, RsAllocationCubemapFace face,
                          uint32_t w, uint32_t h, const void *data, uint32_t sizeBytes) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     uint32_t eSize = alloc->mHal.state.elementSizeBytes;
     uint32_t lineSize = eSize * w;
     uint32_t destW = alloc->mHal.state.dimensionX;

     if (drv->mallocPtr) {
         const uint8_t *src = static_cast<const uint8_t *>(data);
         uint8_t *dst = drv->mallocPtr;
         dst += alloc->mHal.state.type->getLODFaceOffset(lod, face, xoff, yoff);

         for (uint32_t line=yoff; line < (yoff+h); line++) {
             if (alloc->mHal.state.hasReferences) {
                 alloc->incRefs(src, w);
                 alloc->decRefs(dst, w);
             }
             memcpy(dst, src, lineSize);
             src += lineSize;
             dst += destW * eSize;
         }
         drv->uploadDeferred = true;
     } else {
         Update2DTexture(alloc, data, xoff, yoff, lod, face, w, h);
     }
 }

 void rsdAllocationData3D(const Context *rsc, const Allocation *alloc,
                          uint32_t xoff, uint32_t yoff, uint32_t zoff,
                          uint32_t lod, RsAllocationCubemapFace face,
                          uint32_t w, uint32_t h, uint32_t d, const void *data, uint32_t sizeBytes) {

 }

 void rsdAllocationElementData1D(const Context *rsc, const Allocation *alloc,
                                 uint32_t x,
                                 const void *data, uint32_t cIdx, uint32_t sizeBytes) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     uint32_t eSize = alloc->mHal.state.elementSizeBytes;
     uint8_t * ptr = drv->mallocPtr;
     ptr += eSize * x;

     const Element * e = alloc->mHal.state.type->getElement()->getField(cIdx);
     ptr += alloc->mHal.state.type->getElement()->getFieldOffsetBytes(cIdx);

     if (alloc->mHal.state.hasReferences) {
         e->incRefs(data);
         e->decRefs(ptr);
     }

     memcpy(ptr, data, sizeBytes);
     drv->uploadDeferred = true;
 }

 void rsdAllocationElementData2D(const Context *rsc, const Allocation *alloc,
                                 uint32_t x, uint32_t y,
                                 const void *data, uint32_t cIdx, uint32_t sizeBytes) {
     DrvAllocation *drv = (DrvAllocation *)alloc->mHal.drv;

     uint32_t eSize = alloc->mHal.state.elementSizeBytes;
     uint8_t * ptr = drv->mallocPtr;
     ptr += eSize * (x + y * alloc->mHal.state.dimensionX);

     const Element * e = alloc->mHal.state.type->getElement()->getField(cIdx);
     ptr += alloc->mHal.state.type->getElement()->getFieldOffsetBytes(cIdx);

     if (alloc->mHal.state.hasReferences) {
         e->incRefs(data);
         e->decRefs(ptr);
     }

     memcpy(ptr, data, sizeBytes);
     drv->uploadDeferred = true;
 }
	/*
	* Copyright (C) 2011 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/


	#include "rsdCore.h"
	#include "rsdBcc.h"
	#include "rsdRuntime.h"
	#include "rsdAllocation.h"

	#include "rsAllocation.h"

	#include <GLES/gl.h>
	#include <GLES2/gl2.h>
	#include <GLES/glext.h>

	using namespace android;
	using namespace android::renderscript;



	const static GLenum gFaceOrder[] = {
	GL_TEXTURE_CUBE_MAP_POSITIVE_X,
	GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
	GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
	GL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
	GL_TEXTURE_CUBE_MAP_POSITIVE_Z,
	GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
	};


	GLenum rsdTypeToGLType(RsDataType t) {
	switch (t) {
	case RS_TYPE_UNSIGNED_5_6_5: return GL_UNSIGNED_SHORT_5_6_5;
	case RS_TYPE_UNSIGNED_5_5_5_1: return GL_UNSIGNED_SHORT_5_5_5_1;
	case RS_TYPE_UNSIGNED_4_4_4_4: return GL_UNSIGNED_SHORT_4_4_4_4;

	//case RS_TYPE_FLOAT_16: return GL_HALF_FLOAT;
	case RS_TYPE_FLOAT_32: return GL_FLOAT;
	case RS_TYPE_UNSIGNED_8: return GL_UNSIGNED_BYTE;
	case RS_TYPE_UNSIGNED_16: return GL_UNSIGNED_SHORT;
	case RS_TYPE_SIGNED_8: return GL_BYTE;
	case RS_TYPE_SIGNED_16: return GL_SHORT;
	default: break;
	}
	return 0;
	}

	GLenum rsdKindToGLFormat(RsDataKind k) {
	switch (k) {
	case RS_KIND_PIXEL_L: return GL_LUMINANCE;
	case RS_KIND_PIXEL_A: return GL_ALPHA;
	case RS_KIND_PIXEL_LA: return GL_LUMINANCE_ALPHA;
	case RS_KIND_PIXEL_RGB: return GL_RGB;
	case RS_KIND_PIXEL_RGBA: return GL_RGBA;
	case RS_KIND_PIXEL_DEPTH: return GL_DEPTH_COMPONENT16;
	default: break;
	}
	return 0;
	}


	static void Update2DTexture(const Allocation alloc, const void ptr, uint32_t xoff, uint32_t yoff,
	uint32_t lod, RsAllocationCubemapFace face,
	uint32_t w, uint32_t h) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	rsAssert(drv->textureID);
	glBindTexture(drv->glTarget, drv->textureID);
	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
	GLenum t = GL_TEXTURE_2D;
	if (alloc->mHal.state.hasFaces) {
	t = gFaceOrder[face];
	}
	glTexSubImage2D(t, lod, xoff, yoff, w, h, drv->glFormat, drv->glType, ptr);
	}


	static void Upload2DTexture(const Context rsc, const Allocation alloc, bool isFirstUpload) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	glBindTexture(drv->glTarget, drv->textureID);
	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

	uint32_t faceCount = 1;
	if (alloc->mHal.state.hasFaces) {
	faceCount = 6;
	}

	rsdGLCheckError(rsc, "Upload2DTexture 1 ");
	for (uint32_t face = 0; face < faceCount; face ++) {
	for (uint32_t lod = 0; lod < alloc->mHal.state.type->getLODCount(); lod++) {
	const uint8_t p = (const uint8_t )drv->mallocPtr;
	p += alloc->mHal.state.type->getLODFaceOffset(lod, (RsAllocationCubemapFace)face, 0, 0);

	GLenum t = GL_TEXTURE_2D;
	if (alloc->mHal.state.hasFaces) {
	t = gFaceOrder[face];
	}

	if (isFirstUpload) {
	glTexImage2D(t, lod, drv->glFormat,
	alloc->mHal.state.type->getLODDimX(lod),
	alloc->mHal.state.type->getLODDimY(lod),
	0, drv->glFormat, drv->glType, p);
	} else {
	glTexSubImage2D(t, lod, 0, 0,
	alloc->mHal.state.type->getLODDimX(lod),
	alloc->mHal.state.type->getLODDimY(lod),
	drv->glFormat, drv->glType, p);
	}
	}
	}

	if (alloc->mHal.state.mipmapControl == RS_ALLOCATION_MIPMAP_ON_SYNC_TO_TEXTURE) {
	glGenerateMipmap(drv->glTarget);
	}
	rsdGLCheckError(rsc, "Upload2DTexture");
	}

	static void UploadToTexture(const Context rsc, const Allocation alloc) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	if (!drv->glType \|\| !drv->glFormat) {
	return;
	}

	if (!alloc->getPtr()) {
	return;
	}

	bool isFirstUpload = false;

	if (!drv->textureID) {
	glGenTextures(1, &drv->textureID);
	isFirstUpload = true;
	}

	Upload2DTexture(rsc, alloc, isFirstUpload);

	if (!(alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_SCRIPT)) {
	if (drv->mallocPtr) {
	free(drv->mallocPtr);
	drv->mallocPtr = NULL;
	}
	}
	rsdGLCheckError(rsc, "UploadToTexture");
	}

	static void AllocateRenderTarget(const Context rsc, const Allocation alloc) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	if (!drv->glFormat) {
	return;
	}

	if (!drv->renderTargetID) {
	glGenRenderbuffers(1, &drv->renderTargetID);

	if (!drv->renderTargetID) {
	// This should generally not happen
	LOGE("allocateRenderTarget failed to gen mRenderTargetID");
	rsc->dumpDebug();
	return;
	}
	glBindRenderbuffer(GL_RENDERBUFFER, drv->renderTargetID);
	glRenderbufferStorage(GL_RENDERBUFFER, drv->glFormat,
	alloc->mHal.state.dimensionX, alloc->mHal.state.dimensionY);
	}
	rsdGLCheckError(rsc, "AllocateRenderTarget");
	}

	static void UploadToBufferObject(const Context rsc, const Allocation alloc) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	rsAssert(!alloc->mHal.state.type->getDimY());
	rsAssert(!alloc->mHal.state.type->getDimZ());

	//alloc->mHal.state.usageFlags \|= RS_ALLOCATION_USAGE_GRAPHICS_VERTEX;

	if (!drv->bufferID) {
	glGenBuffers(1, &drv->bufferID);
	}
	if (!drv->bufferID) {
	LOGE("Upload to buffer object failed");
	drv->uploadDeferred = true;
	return;
	}
	glBindBuffer(drv->glTarget, drv->bufferID);
	glBufferData(drv->glTarget, alloc->mHal.state.type->getSizeBytes(),
	drv->mallocPtr, GL_DYNAMIC_DRAW);
	glBindBuffer(drv->glTarget, 0);
	rsdGLCheckError(rsc, "UploadToBufferObject");
	}

	bool rsdAllocationInit(const Context rsc, Allocation alloc, bool forceZero) {
	DrvAllocation drv = (DrvAllocation )calloc(1, sizeof(DrvAllocation));
	if (!drv) {
	return false;
	}

	void * ptr = malloc(alloc->mHal.state.type->getSizeBytes());
	if (!ptr) {
	free(drv);
	return false;
	}

	drv->glTarget = GL_NONE;
	if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_TEXTURE) {
	if (alloc->mHal.state.hasFaces) {
	drv->glTarget = GL_TEXTURE_CUBE_MAP;
	} else {
	drv->glTarget = GL_TEXTURE_2D;
	}
	} else {
	if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_VERTEX) {
	drv->glTarget = GL_ARRAY_BUFFER;
	}
	}

	drv->glType = rsdTypeToGLType(alloc->mHal.state.type->getElement()->getComponent().getType());
	drv->glFormat = rsdKindToGLFormat(alloc->mHal.state.type->getElement()->getComponent().getKind());


	alloc->mHal.drvState.mallocPtr = ptr;
	drv->mallocPtr = (uint8_t *)ptr;
	alloc->mHal.drv = drv;
	if (forceZero) {
	memset(ptr, 0, alloc->mHal.state.type->getSizeBytes());
	}

	if (alloc->mHal.state.usageFlags & ~RS_ALLOCATION_USAGE_SCRIPT) {
	drv->uploadDeferred = true;
	}
	return true;
	}

	void rsdAllocationDestroy(const Context rsc, Allocation alloc) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	if (drv->bufferID) {
	// Causes a SW crash....
	//LOGV(" mBufferID %i", mBufferID);
	//glDeleteBuffers(1, &mBufferID);
	//mBufferID = 0;
	}
	if (drv->textureID) {
	glDeleteTextures(1, &drv->textureID);
	drv->textureID = 0;
	}
	if (drv->renderTargetID) {
	glDeleteRenderbuffers(1, &drv->renderTargetID);
	drv->renderTargetID = 0;
	}

	if (drv->mallocPtr) {
	free(drv->mallocPtr);
	drv->mallocPtr = NULL;
	}
	free(drv);
	alloc->mHal.drv = NULL;
	}

	void rsdAllocationResize(const Context rsc, const Allocation alloc,
	const Type *newType, bool zeroNew) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	drv->mallocPtr = (uint8_t *)realloc(drv->mallocPtr, newType->getSizeBytes());

	// fixme
	((Allocation *)alloc)->mHal.drvState.mallocPtr = drv->mallocPtr;

	const uint32_t oldDimX = alloc->mHal.state.dimensionX;
	const uint32_t dimX = newType->getDimX();

	if (dimX > oldDimX) {
	const Element *e = alloc->mHal.state.type->getElement();
	uint32_t stride = e->getSizeBytes();
	memset(((uint8_t )drv->mallocPtr) + stride oldDimX, 0, stride * (dimX - oldDimX));
	}
	}



	void rsdAllocationSyncAll(const Context rsc, const Allocation alloc,
	RsAllocationUsageType src) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	if (!drv->uploadDeferred) {
	return;
	}

	rsAssert(src == RS_ALLOCATION_USAGE_SCRIPT);

	if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_TEXTURE) {
	UploadToTexture(rsc, alloc);
	} else {
	if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_RENDER_TARGET) {
	AllocateRenderTarget(rsc, alloc);
	}
	}
	if (alloc->mHal.state.usageFlags & RS_ALLOCATION_USAGE_GRAPHICS_VERTEX) {
	UploadToBufferObject(rsc, alloc);
	}

	drv->uploadDeferred = false;
	}

	void rsdAllocationMarkDirty(const Context rsc, const Allocation alloc) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;
	drv->uploadDeferred = true;
	}

	void rsdAllocationData1D(const Context rsc, const Allocation alloc,
	uint32_t xoff, uint32_t lod, uint32_t count,
	const void *data, uint32_t sizeBytes) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	const uint32_t eSize = alloc->mHal.state.type->getElementSizeBytes();
	uint8_t * ptr = drv->mallocPtr;
	ptr += eSize * xoff;
	uint32_t size = count * eSize;

	if (alloc->mHal.state.hasReferences) {
	alloc->incRefs(data, count);
	alloc->decRefs(ptr, count);
	}

	memcpy(ptr, data, size);
	drv->uploadDeferred = true;
	}

	void rsdAllocationData2D(const Context rsc, const Allocation alloc,
	uint32_t xoff, uint32_t yoff, uint32_t lod, RsAllocationCubemapFace face,
	uint32_t w, uint32_t h, const void *data, uint32_t sizeBytes) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	uint32_t eSize = alloc->mHal.state.elementSizeBytes;
	uint32_t lineSize = eSize * w;
	uint32_t destW = alloc->mHal.state.dimensionX;

	if (drv->mallocPtr) {
	const uint8_t src = static_cast<const uint8_t >(data);
	uint8_t *dst = drv->mallocPtr;
	dst += alloc->mHal.state.type->getLODFaceOffset(lod, face, xoff, yoff);

	for (uint32_t line=yoff; line < (yoff+h); line++) {
	if (alloc->mHal.state.hasReferences) {
	alloc->incRefs(src, w);
	alloc->decRefs(dst, w);
	}
	memcpy(dst, src, lineSize);
	src += lineSize;
	dst += destW * eSize;
	}
	drv->uploadDeferred = true;
	} else {
	Update2DTexture(alloc, data, xoff, yoff, lod, face, w, h);
	}
	}

	void rsdAllocationData3D(const Context rsc, const Allocation alloc,
	uint32_t xoff, uint32_t yoff, uint32_t zoff,
	uint32_t lod, RsAllocationCubemapFace face,
	uint32_t w, uint32_t h, uint32_t d, const void *data, uint32_t sizeBytes) {

	}

	void rsdAllocationElementData1D(const Context rsc, const Allocation alloc,
	uint32_t x,
	const void *data, uint32_t cIdx, uint32_t sizeBytes) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	uint32_t eSize = alloc->mHal.state.elementSizeBytes;
	uint8_t * ptr = drv->mallocPtr;
	ptr += eSize * x;

	const Element * e = alloc->mHal.state.type->getElement()->getField(cIdx);
	ptr += alloc->mHal.state.type->getElement()->getFieldOffsetBytes(cIdx);

	if (alloc->mHal.state.hasReferences) {
	e->incRefs(data);
	e->decRefs(ptr);
	}

	memcpy(ptr, data, sizeBytes);
	drv->uploadDeferred = true;
	}

	void rsdAllocationElementData2D(const Context rsc, const Allocation alloc,
	uint32_t x, uint32_t y,
	const void *data, uint32_t cIdx, uint32_t sizeBytes) {
	DrvAllocation drv = (DrvAllocation )alloc->mHal.drv;

	uint32_t eSize = alloc->mHal.state.elementSizeBytes;
	uint8_t * ptr = drv->mallocPtr;
	ptr += eSize * (x + y * alloc->mHal.state.dimensionX);

	const Element * e = alloc->mHal.state.type->getElement()->getField(cIdx);
	ptr += alloc->mHal.state.type->getElement()->getFieldOffsetBytes(cIdx);

	if (alloc->mHal.state.hasReferences) {
	e->incRefs(data);
	e->decRefs(ptr);
	}

	memcpy(ptr, data, sizeBytes);
	drv->uploadDeferred = true;
	}