Merge changes from topic "libagl"

* changes:
  Remove mention of legacy software renderer
  Nuke libagl and setEmulatorGlesValue

1 files changed, 0 insertions, 1643 deletions

diff --git a/opengl/libagl/texture.cpp b/opengl/libagl/texture.cpp
deleted file mode 100644
index 4c5f3e93d3..0000000000
--- a/opengl/libagl/texture.cpp
+++ /dev/null
@@ -1,1643 +0,0 @@
-/* libs/opengles/texture.cpp
-**
-** Copyright 2006, 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 <stdio.h>
-#include <stdlib.h>
-#include "context.h"
-#include "fp.h"
-#include "state.h"
-#include "texture.h"
-#include "TextureObjectManager.h"
-
-#include <ETC1/etc1.h>
-
-#include <ui/GraphicBufferMapper.h>
-#include <ui/Rect.h>
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-static void bindTextureTmu(
-    ogles_context_t* c, int tmu, GLuint texture, const sp<EGLTextureObject>& tex);
-
-static __attribute__((noinline))
-void generateMipmap(ogles_context_t* c, GLint level);
-
-// ----------------------------------------------------------------------------
-
-#if 0
-#pragma mark -
-#pragma mark Init
-#endif
-
-void ogles_init_texture(ogles_context_t* c)
-{
-    c->textures.packAlignment   = 4;
-    c->textures.unpackAlignment = 4;
-
-    // each context has a default named (0) texture (not shared)
-    c->textures.defaultTexture = new EGLTextureObject();
-    c->textures.defaultTexture->incStrong(c);
-
-    // bind the default texture to each texture unit
-    for (int i=0; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-        bindTextureTmu(c, i, 0, c->textures.defaultTexture);
-        memset(c->current.texture[i].v, 0, sizeof(vec4_t));
-        c->current.texture[i].Q = 0x10000;
-    }
-}
-
-void ogles_uninit_texture(ogles_context_t* c)
-{
-    if (c->textures.ggl)
-        gglUninit(c->textures.ggl);
-    c->textures.defaultTexture->decStrong(c);
-    for (int i=0; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-        if (c->textures.tmu[i].texture)
-            c->textures.tmu[i].texture->decStrong(c);
-    }
-}
-
-static __attribute__((noinline))
-void validate_tmu(ogles_context_t* c, int i)
-{
-    texture_unit_t& u(c->textures.tmu[i]);
-    if (u.dirty) {
-        u.dirty = 0;
-        c->rasterizer.procs.activeTexture(c, i);
-        c->rasterizer.procs.bindTexture(c, &(u.texture->surface));
-        c->rasterizer.procs.texGeni(c, GGL_S,
-                GGL_TEXTURE_GEN_MODE, GGL_AUTOMATIC);
-        c->rasterizer.procs.texGeni(c, GGL_T,
-                GGL_TEXTURE_GEN_MODE, GGL_AUTOMATIC);
-        c->rasterizer.procs.texParameteri(c, GGL_TEXTURE_2D,
-                GGL_TEXTURE_WRAP_S, u.texture->wraps);
-        c->rasterizer.procs.texParameteri(c, GGL_TEXTURE_2D,
-                GGL_TEXTURE_WRAP_T, u.texture->wrapt);
-        c->rasterizer.procs.texParameteri(c, GGL_TEXTURE_2D,
-                GGL_TEXTURE_MIN_FILTER, u.texture->min_filter);
-        c->rasterizer.procs.texParameteri(c, GGL_TEXTURE_2D,
-                GGL_TEXTURE_MAG_FILTER, u.texture->mag_filter);
-
-        // disable this texture unit if it's not complete
-        if (!u.texture->isComplete()) {
-            c->rasterizer.procs.disable(c, GGL_TEXTURE_2D);
-        }
-    }
-}
-
-void ogles_validate_texture(ogles_context_t* c)
-{
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-        if (c->rasterizer.state.texture[i].enable)
-            validate_tmu(c, i);
-    }
-    c->rasterizer.procs.activeTexture(c, c->textures.active);
-}
-
-static
-void invalidate_texture(ogles_context_t* c, int tmu, uint8_t flags = 0xFF) {
-    c->textures.tmu[tmu].dirty = flags;
-}
-
-/*
- * If the active textures are EGLImage, they need to be locked before
- * they can be used.
- *
- * FIXME: code below is far from being optimal
- *
- */
-
-void ogles_lock_textures(ogles_context_t* c)
-{
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-        if (c->rasterizer.state.texture[i].enable) {
-            texture_unit_t& u(c->textures.tmu[i]);
-            ANativeWindowBuffer* native_buffer = u.texture->buffer;
-            if (native_buffer) {
-                c->rasterizer.procs.activeTexture(c, i);
-
-                auto& mapper = GraphicBufferMapper::get();
-                void* vaddr;
-                mapper.lock(native_buffer->handle, GRALLOC_USAGE_SW_READ_OFTEN,
-                        Rect(native_buffer->width, native_buffer->height),
-                        &vaddr);
-
-                u.texture->setImageBits(vaddr);
-                c->rasterizer.procs.bindTexture(c, &(u.texture->surface));
-            }
-        }
-    }
-}
-
-void ogles_unlock_textures(ogles_context_t* c)
-{
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-        if (c->rasterizer.state.texture[i].enable) {
-            texture_unit_t& u(c->textures.tmu[i]);
-            ANativeWindowBuffer* native_buffer = u.texture->buffer;
-            if (native_buffer) {
-                c->rasterizer.procs.activeTexture(c, i);
-
-                auto& mapper = GraphicBufferMapper::get();
-                mapper.unlock(native_buffer->handle);
-
-                u.texture->setImageBits(NULL);
-                c->rasterizer.procs.bindTexture(c, &(u.texture->surface));
-            }
-        }
-    }
-    c->rasterizer.procs.activeTexture(c, c->textures.active);
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Format conversion
-#endif
-
-static uint32_t gl2format_table[6][4] = {
-    // BYTE, 565, 4444, 5551
-    { GGL_PIXEL_FORMAT_A_8,
-      0, 0, 0 },                        // GL_ALPHA
-    { GGL_PIXEL_FORMAT_RGB_888,
-      GGL_PIXEL_FORMAT_RGB_565,
-      0, 0 },                           // GL_RGB
-    { GGL_PIXEL_FORMAT_RGBA_8888,
-      0,
-      GGL_PIXEL_FORMAT_RGBA_4444,
-      GGL_PIXEL_FORMAT_RGBA_5551 },     // GL_RGBA
-    { GGL_PIXEL_FORMAT_L_8,
-      0, 0, 0 },                        // GL_LUMINANCE
-    { GGL_PIXEL_FORMAT_LA_88,
-      0, 0, 0 },                        // GL_LUMINANCE_ALPHA
-};
-
-static int32_t convertGLPixelFormat(GLint format, GLenum type)
-{
-    int32_t fi = -1;
-    int32_t ti = -1;
-    switch (format) {
-    case GL_ALPHA:              fi = 0;     break;
-    case GL_RGB:                fi = 1;     break;
-    case GL_RGBA:               fi = 2;     break;
-    case GL_LUMINANCE:          fi = 3;     break;
-    case GL_LUMINANCE_ALPHA:    fi = 4;     break;
-    }
-    switch (type) {
-    case GL_UNSIGNED_BYTE:          ti = 0; break;
-    case GL_UNSIGNED_SHORT_5_6_5:   ti = 1; break;
-    case GL_UNSIGNED_SHORT_4_4_4_4: ti = 2; break;
-    case GL_UNSIGNED_SHORT_5_5_5_1: ti = 3; break;
-    }
-    if (fi==-1 || ti==-1)
-        return 0;
-    return gl2format_table[fi][ti];
-}
-
-// ----------------------------------------------------------------------------
-
-static GLenum validFormatType(ogles_context_t* c, GLenum format, GLenum type)
-{
-    GLenum error = 0;
-    if (format<GL_ALPHA || format>GL_LUMINANCE_ALPHA) {
-        error = GL_INVALID_ENUM;
-    }
-    if (type != GL_UNSIGNED_BYTE && type != GL_UNSIGNED_SHORT_4_4_4_4 &&
-        type != GL_UNSIGNED_SHORT_5_5_5_1 && type != GL_UNSIGNED_SHORT_5_6_5) {
-        error = GL_INVALID_ENUM;
-    }
-    if (type == GL_UNSIGNED_SHORT_5_6_5 && format != GL_RGB) {
-        error = GL_INVALID_OPERATION;
-    }
-    if ((type == GL_UNSIGNED_SHORT_4_4_4_4 ||
-         type == GL_UNSIGNED_SHORT_5_5_5_1)  && format != GL_RGBA) {
-        error = GL_INVALID_OPERATION;
-    }
-    if (error) {
-        ogles_error(c, error);
-    }
-    return error;
-}
-
-// ----------------------------------------------------------------------------
-
-GGLContext* getRasterizer(ogles_context_t* c)
-{
-    GGLContext* ggl = c->textures.ggl;
-    if (ggl_unlikely(!ggl)) {
-        // this is quite heavy the first time...
-        gglInit(&ggl);
-        if (!ggl) {
-            return 0;
-        }
-        GGLfixed colors[4] = { 0, 0, 0, 0x10000 };
-        c->textures.ggl = ggl;
-        ggl->activeTexture(ggl, 0);
-        ggl->enable(ggl, GGL_TEXTURE_2D);
-        ggl->texEnvi(ggl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);
-        ggl->disable(ggl, GGL_DITHER);
-        ggl->shadeModel(ggl, GGL_FLAT);
-        ggl->color4xv(ggl, colors);
-    }
-    return ggl;
-}
-
-static __attribute__((noinline))
-int copyPixels(
-        ogles_context_t* c,
-        const GGLSurface& dst,
-        GLint xoffset, GLint yoffset,
-        const GGLSurface& src,
-        GLint x, GLint y, GLsizei w, GLsizei h)
-{
-    if ((dst.format == src.format) &&
-        (dst.stride == src.stride) &&
-        (dst.width == src.width) &&
-        (dst.height == src.height) &&
-        (dst.stride > 0) &&
-        ((x|y) == 0) &&
-        ((xoffset|yoffset) == 0))
-    {
-        // this is a common case...
-        const GGLFormat& pixelFormat(c->rasterizer.formats[src.format]);
-        const size_t size = src.height * src.stride * pixelFormat.size;
-        memcpy(dst.data, src.data, size);
-        return 0;
-    }
-
-    // use pixel-flinger to handle all the conversions
-    GGLContext* ggl = getRasterizer(c);
-    if (!ggl) {
-        // the only reason this would fail is because we ran out of memory
-        return GL_OUT_OF_MEMORY;
-    }
-
-    ggl->colorBuffer(ggl, &dst);
-    ggl->bindTexture(ggl, &src);
-    ggl->texCoord2i(ggl, x-xoffset, y-yoffset);
-    ggl->recti(ggl, xoffset, yoffset, xoffset+w, yoffset+h);
-    return 0;
-}
-
-// ----------------------------------------------------------------------------
-
-static __attribute__((noinline))
-sp<EGLTextureObject> getAndBindActiveTextureObject(ogles_context_t* c)
-{
-    sp<EGLTextureObject> tex;
-    const int active = c->textures.active;
-    const GLuint name = c->textures.tmu[active].name;
-
-    // free the reference to the previously bound object
-    texture_unit_t& u(c->textures.tmu[active]);
-    if (u.texture)
-        u.texture->decStrong(c);
-
-    if (name == 0) {
-        // 0 is our local texture object, not shared with anyone.
-        // But it affects all bound TMUs immediately.
-        // (we need to invalidate all units bound to this texture object)
-        tex = c->textures.defaultTexture;
-        for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-            if (c->textures.tmu[i].texture == tex.get())
-                invalidate_texture(c, i);
-        }
-    } else {
-        // get a new texture object for that name
-        tex = c->surfaceManager->replaceTexture(name);
-    }
-
-    // bind this texture to the current active texture unit
-    // and add a reference to this texture object
-    u.texture = tex.get();
-    u.texture->incStrong(c);
-    u.name = name;
-    invalidate_texture(c, active);
-    return tex;
-}
-
-void bindTextureTmu(
-    ogles_context_t* c, int tmu, GLuint texture, const sp<EGLTextureObject>& tex)
-{
-    if (tex.get() == c->textures.tmu[tmu].texture)
-        return;
-
-    // free the reference to the previously bound object
-    texture_unit_t& u(c->textures.tmu[tmu]);
-    if (u.texture)
-        u.texture->decStrong(c);
-
-    // bind this texture to the current active texture unit
-    // and add a reference to this texture object
-    u.texture = tex.get();
-    u.texture->incStrong(c);
-    u.name = texture;
-    invalidate_texture(c, tmu);
-}
-
-int createTextureSurface(ogles_context_t* c,
-        GGLSurface** outSurface, int32_t* outSize, GLint level,
-        GLenum format, GLenum type, GLsizei width, GLsizei height,
-        GLenum compressedFormat = 0)
-{
-    // convert the pixelformat to one we can handle
-    const int32_t formatIdx = convertGLPixelFormat(format, type);
-    if (formatIdx == 0) { // we don't know what to do with this
-        return GL_INVALID_OPERATION;
-    }
-
-    // figure out the size we need as well as the stride
-    const GGLFormat& pixelFormat(c->rasterizer.formats[formatIdx]);
-    const int32_t align = c->textures.unpackAlignment-1;
-    const int32_t bpr = ((width * pixelFormat.size) + align) & ~align;
-    const size_t size = bpr * height;
-    const int32_t stride = bpr / pixelFormat.size;
-
-    if (level > 0) {
-        const int active = c->textures.active;
-        EGLTextureObject* tex = c->textures.tmu[active].texture;
-        status_t err = tex->reallocate(level,
-                width, height, stride, formatIdx, compressedFormat, bpr);
-        if (err != NO_ERROR)
-            return GL_OUT_OF_MEMORY;
-        GGLSurface& surface = tex->editMip(level);
-        *outSurface = &surface;
-        *outSize = size;
-        return 0;
-    }
-
-    sp<EGLTextureObject> tex = getAndBindActiveTextureObject(c);
-    status_t err = tex->reallocate(level,
-            width, height, stride, formatIdx, compressedFormat, bpr);
-    if (err != NO_ERROR)
-        return GL_OUT_OF_MEMORY;
-
-    tex->internalformat = format;
-    *outSurface = &tex->surface;
-    *outSize = size;
-    return 0;
-}
-
-static GLsizei dataSizePalette4(int numLevels, int width, int height, int format)
-{
-    int indexBits = 8;
-    int entrySize = 0;
-    switch (format) {
-    case GL_PALETTE4_RGB8_OES:
-        indexBits = 4;
-        [[fallthrough]];
-    case GL_PALETTE8_RGB8_OES:
-        entrySize = 3;
-        break;
-
-    case GL_PALETTE4_RGBA8_OES:
-        indexBits = 4;
-        [[fallthrough]];
-    case GL_PALETTE8_RGBA8_OES:
-        entrySize = 4;
-        break;
-
-    case GL_PALETTE4_R5_G6_B5_OES:
-    case GL_PALETTE4_RGBA4_OES:
-    case GL_PALETTE4_RGB5_A1_OES:
-        indexBits = 4;
-        [[fallthrough]];
-    case GL_PALETTE8_R5_G6_B5_OES:
-    case GL_PALETTE8_RGBA4_OES:
-    case GL_PALETTE8_RGB5_A1_OES:
-        entrySize = 2;
-        break;
-    }
-
-    size_t size = (1 << indexBits) * entrySize; // palette size
-
-    for (int i=0 ; i< numLevels ; i++) {
-        int w = (width  >> i) ? : 1;
-        int h = (height >> i) ? : 1;
-        int levelSize = h * ((w * indexBits) / 8) ? : 1;
-        size += levelSize;
-    }
-
-    return size;
-}
-
-static void decodePalette4(const GLvoid *data, int level, int width, int height,
-                           void *surface, int stride, int format)
-
-{
-    int indexBits = 8;
-    int entrySize = 0;
-    switch (format) {
-    case GL_PALETTE4_RGB8_OES:
-        indexBits = 4;
-        [[fallthrough]];
-    case GL_PALETTE8_RGB8_OES:
-        entrySize = 3;
-        break;
-
-    case GL_PALETTE4_RGBA8_OES:
-        indexBits = 4;
-        [[fallthrough]];
-    case GL_PALETTE8_RGBA8_OES:
-        entrySize = 4;
-        break;
-
-    case GL_PALETTE4_R5_G6_B5_OES:
-    case GL_PALETTE4_RGBA4_OES:
-    case GL_PALETTE4_RGB5_A1_OES:
-        indexBits = 4;
-        [[fallthrough]];
-    case GL_PALETTE8_R5_G6_B5_OES:
-    case GL_PALETTE8_RGBA4_OES:
-    case GL_PALETTE8_RGB5_A1_OES:
-        entrySize = 2;
-        break;
-    }
-
-    const int paletteSize = (1 << indexBits) * entrySize;
-
-    uint8_t const* pixels = (uint8_t *)data + paletteSize;
-    for (int i=0 ; i<level ; i++) {
-        int w = (width  >> i) ? : 1;
-        int h = (height >> i) ? : 1;
-        pixels += h * ((w * indexBits) / 8);
-    }
-    width  = (width  >> level) ? : 1;
-    height = (height >> level) ? : 1;
-
-    if (entrySize == 2) {
-        uint8_t const* const palette = (uint8_t*)data;
-        for (int y=0 ; y<height ; y++) {
-            uint8_t* p = (uint8_t*)surface + y*stride*2;
-            if (indexBits == 8) {
-                for (int x=0 ; x<width ; x++) {
-                    int index = 2 * (*pixels++);
-                    *p++ = palette[index + 0];
-                    *p++ = palette[index + 1];
-                }
-            } else {
-                for (int x=0 ; x<width ; x+=2) {
-                    int v = *pixels++;
-                    int index = 2 * (v >> 4);
-                    *p++ = palette[index + 0];
-                    *p++ = palette[index + 1];
-                    if (x+1 < width) {
-                        index = 2 * (v & 0xF);
-                        *p++ = palette[index + 0];
-                        *p++ = palette[index + 1];
-                    }
-                }
-            }
-        }
-    } else if (entrySize == 3) {
-        uint8_t const* const palette = (uint8_t*)data;
-        for (int y=0 ; y<height ; y++) {
-            uint8_t* p = (uint8_t*)surface + y*stride*3;
-            if (indexBits == 8) {
-                for (int x=0 ; x<width ; x++) {
-                    int index = 3 * (*pixels++);
-                    *p++ = palette[index + 0];
-                    *p++ = palette[index + 1];
-                    *p++ = palette[index + 2];
-                }
-            } else {
-                for (int x=0 ; x<width ; x+=2) {
-                    int v = *pixels++;
-                    int index = 3 * (v >> 4);
-                    *p++ = palette[index + 0];
-                    *p++ = palette[index + 1];
-                    *p++ = palette[index + 2];
-                    if (x+1 < width) {
-                        index = 3 * (v & 0xF);
-                        *p++ = palette[index + 0];
-                        *p++ = palette[index + 1];
-                        *p++ = palette[index + 2];
-                    }
-                }
-            }
-        }
-    } else if (entrySize == 4) {
-        uint8_t const* const palette = (uint8_t*)data;
-        for (int y=0 ; y<height ; y++) {
-            uint8_t* p = (uint8_t*)surface + y*stride*4;
-            if (indexBits == 8) {
-                for (int x=0 ; x<width ; x++) {
-                    int index = 4 * (*pixels++);
-                    *p++ = palette[index + 0];
-                    *p++ = palette[index + 1];
-                    *p++ = palette[index + 2];
-                    *p++ = palette[index + 3];
-                }
-            } else {
-                for (int x=0 ; x<width ; x+=2) {
-                    int v = *pixels++;
-                    int index = 4 * (v >> 4);
-                    *p++ = palette[index + 0];
-                    *p++ = palette[index + 1];
-                    *p++ = palette[index + 2];
-                    *p++ = palette[index + 3];
-                    if (x+1 < width) {
-                        index = 4 * (v & 0xF);
-                        *p++ = palette[index + 0];
-                        *p++ = palette[index + 1];
-                        *p++ = palette[index + 2];
-                        *p++ = palette[index + 3];
-                    }
-                }
-            }
-        }
-    }
-}
-
-
-
-static __attribute__((noinline))
-void set_depth_and_fog(ogles_context_t* c, GGLfixed z)
-{
-    const uint32_t enables = c->rasterizer.state.enables;
-    // we need to compute Zw
-    int32_t iterators[3];
-    iterators[1] = iterators[2] = 0;
-    GGLfixed Zw;
-    GGLfixed n = gglFloatToFixed(c->transforms.vpt.zNear);
-    GGLfixed f = gglFloatToFixed(c->transforms.vpt.zFar);
-    if (z<=0)               Zw = n;
-    else if (z>=0x10000)    Zw = f;
-    else            Zw = gglMulAddx(z, (f-n), n);
-    if (enables & GGL_ENABLE_FOG) {
-        // set up fog if needed...
-        iterators[0] = c->fog.fog(c, Zw);
-        c->rasterizer.procs.fogGrad3xv(c, iterators);
-    }
-    if (enables & GGL_ENABLE_DEPTH_TEST) {
-        // set up z-test if needed...
-        int32_t z = (Zw & ~(Zw>>31));
-        if (z >= 0x10000)
-            z = 0xFFFF;
-        iterators[0] = (z << 16) | z;
-        c->rasterizer.procs.zGrad3xv(c, iterators);
-    }
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Generate mimaps
-#endif
-
-extern status_t buildAPyramid(ogles_context_t* c, EGLTextureObject* tex);
-
-void generateMipmap(ogles_context_t* c, GLint level)
-{
-    if (level == 0) {
-        const int active = c->textures.active;
-        EGLTextureObject* tex = c->textures.tmu[active].texture;
-        if (tex->generate_mipmap) {
-            if (buildAPyramid(c, tex) != NO_ERROR) {
-                ogles_error(c, GL_OUT_OF_MEMORY);
-                return;
-            }
-        }
-    }
-}
-
-
-static void texParameterx(
-        GLenum target, GLenum pname, GLfixed param, ogles_context_t* c)
-{
-    if (target != GL_TEXTURE_2D && target != GL_TEXTURE_EXTERNAL_OES) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-
-    EGLTextureObject* textureObject = c->textures.tmu[c->textures.active].texture;
-    switch (pname) {
-    case GL_TEXTURE_WRAP_S:
-        if ((param == GL_REPEAT) ||
-            (param == GL_CLAMP_TO_EDGE)) {
-            textureObject->wraps = param;
-        } else {
-            goto invalid_enum;
-        }
-        break;
-    case GL_TEXTURE_WRAP_T:
-        if ((param == GL_REPEAT) ||
-            (param == GL_CLAMP_TO_EDGE)) {
-            textureObject->wrapt = param;
-        } else {
-            goto invalid_enum;
-        }
-        break;
-    case GL_TEXTURE_MIN_FILTER:
-        if ((param == GL_NEAREST) ||
-            (param == GL_LINEAR) ||
-            (param == GL_NEAREST_MIPMAP_NEAREST) ||
-            (param == GL_LINEAR_MIPMAP_NEAREST) ||
-            (param == GL_NEAREST_MIPMAP_LINEAR) ||
-            (param == GL_LINEAR_MIPMAP_LINEAR)) {
-            textureObject->min_filter = param;
-        } else {
-            goto invalid_enum;
-        }
-        break;
-    case GL_TEXTURE_MAG_FILTER:
-        if ((param == GL_NEAREST) ||
-            (param == GL_LINEAR)) {
-            textureObject->mag_filter = param;
-        } else {
-            goto invalid_enum;
-        }
-        break;
-    case GL_GENERATE_MIPMAP:
-        textureObject->generate_mipmap = param;
-        break;
-    default:
-invalid_enum:
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    invalidate_texture(c, c->textures.active);
-}
-
-
-
-static void drawTexxOESImp(GLfixed x, GLfixed y, GLfixed z, GLfixed w, GLfixed h,
-        ogles_context_t* c)
-{
-    ogles_lock_textures(c);
-
-    const GGLSurface& cbSurface = c->rasterizer.state.buffers.color.s;
-    y = gglIntToFixed(cbSurface.height) - (y + h);
-    w >>= FIXED_BITS;
-    h >>= FIXED_BITS;
-
-    // set up all texture units
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-        if (!c->rasterizer.state.texture[i].enable)
-            continue;
-
-        int32_t texcoords[8];
-        texture_unit_t& u(c->textures.tmu[i]);
-
-        // validate this tmu (bind, wrap, filter)
-        validate_tmu(c, i);
-        // we CLAMP here, which works with premultiplied (s,t)
-        c->rasterizer.procs.texParameteri(c,
-                GGL_TEXTURE_2D, GGL_TEXTURE_WRAP_S, GGL_CLAMP);
-        c->rasterizer.procs.texParameteri(c,
-                GGL_TEXTURE_2D, GGL_TEXTURE_WRAP_T, GGL_CLAMP);
-        u.dirty = 0xFF; // XXX: should be more subtle
-
-        EGLTextureObject* textureObject = u.texture;
-        const GLint Ucr = textureObject->crop_rect[0] << 16;
-        const GLint Vcr = textureObject->crop_rect[1] << 16;
-        const GLint Wcr = textureObject->crop_rect[2] << 16;
-        const GLint Hcr = textureObject->crop_rect[3] << 16;
-
-        // computes texture coordinates (pre-multiplied)
-        int32_t dsdx = Wcr / w;   // dsdx =  ((Wcr/w)/Wt)*Wt
-        int32_t dtdy =-Hcr / h;   // dtdy = -((Hcr/h)/Ht)*Ht
-        int32_t s0   = Ucr       - gglMulx(dsdx, x); // s0 = Ucr - x * dsdx
-        int32_t t0   = (Vcr+Hcr) - gglMulx(dtdy, y); // t0 = (Vcr+Hcr) - y*dtdy
-        texcoords[0] = s0;
-        texcoords[1] = dsdx;
-        texcoords[2] = 0;
-        texcoords[3] = t0;
-        texcoords[4] = 0;
-        texcoords[5] = dtdy;
-        texcoords[6] = 0;
-        texcoords[7] = 0;
-        c->rasterizer.procs.texCoordGradScale8xv(c, i, texcoords);
-    }
-
-    const uint32_t enables = c->rasterizer.state.enables;
-    if (ggl_unlikely(enables & (GGL_ENABLE_DEPTH_TEST|GGL_ENABLE_FOG)))
-        set_depth_and_fog(c, z);
-
-    c->rasterizer.procs.activeTexture(c, c->textures.active);
-    c->rasterizer.procs.color4xv(c, c->currentColorClamped.v);
-    c->rasterizer.procs.disable(c, GGL_W_LERP);
-    c->rasterizer.procs.disable(c, GGL_AA);
-    c->rasterizer.procs.shadeModel(c, GL_FLAT);
-    c->rasterizer.procs.recti(c,
-            gglFixedToIntRound(x),
-            gglFixedToIntRound(y),
-            gglFixedToIntRound(x)+w,
-            gglFixedToIntRound(y)+h);
-
-    ogles_unlock_textures(c);
-}
-
-static void drawTexxOES(GLfixed x, GLfixed y, GLfixed z, GLfixed w, GLfixed h,
-        ogles_context_t* c)
-{
-    // quickly reject empty rects
-    if ((w|h) <= 0)
-        return;
-
-    drawTexxOESImp(x, y, z, w, h, c);
-}
-
-static void drawTexiOES(GLint x, GLint y, GLint z, GLint w, GLint h, ogles_context_t* c)
-{
-    // All coordinates are integer, so if we have only one
-    // texture unit active and no scaling is required
-    // THEN, we can use our special 1:1 mapping
-    // which is a lot faster.
-
-    if (ggl_likely(c->rasterizer.state.enabled_tmu == 1)) {
-        const int tmu = 0;
-        texture_unit_t& u(c->textures.tmu[tmu]);
-        EGLTextureObject* textureObject = u.texture;
-        const GLint Wcr = textureObject->crop_rect[2];
-        const GLint Hcr = textureObject->crop_rect[3];
-
-        if ((w == Wcr) && (h == -Hcr)) {
-            if ((w|h) <= 0) return; // quickly reject empty rects
-
-            if (u.dirty) {
-                c->rasterizer.procs.activeTexture(c, tmu);
-                c->rasterizer.procs.bindTexture(c, &(u.texture->surface));
-                c->rasterizer.procs.texParameteri(c, GGL_TEXTURE_2D,
-                        GGL_TEXTURE_MIN_FILTER, u.texture->min_filter);
-                c->rasterizer.procs.texParameteri(c, GGL_TEXTURE_2D,
-                        GGL_TEXTURE_MAG_FILTER, u.texture->mag_filter);
-            }
-            c->rasterizer.procs.texGeni(c, GGL_S,
-                    GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
-            c->rasterizer.procs.texGeni(c, GGL_T,
-                    GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
-            u.dirty = 0xFF; // XXX: should be more subtle
-            c->rasterizer.procs.activeTexture(c, c->textures.active);
-
-            const GGLSurface& cbSurface = c->rasterizer.state.buffers.color.s;
-            y = cbSurface.height - (y + h);
-            const GLint Ucr = textureObject->crop_rect[0];
-            const GLint Vcr = textureObject->crop_rect[1];
-            const GLint s0  = Ucr - x;
-            const GLint t0  = (Vcr + Hcr) - y;
-
-            const GLuint tw = textureObject->surface.width;
-            const GLuint th = textureObject->surface.height;
-            if ((uint32_t(s0+x+w) > tw) || (uint32_t(t0+y+h) > th)) {
-                // The GL spec is unclear about what should happen
-                // in this case, so we just use the slow case, which
-                // at least won't crash
-                goto slow_case;
-            }
-
-            ogles_lock_textures(c);
-
-            c->rasterizer.procs.texCoord2i(c, s0, t0);
-            const uint32_t enables = c->rasterizer.state.enables;
-            if (ggl_unlikely(enables & (GGL_ENABLE_DEPTH_TEST|GGL_ENABLE_FOG)))
-                set_depth_and_fog(c, gglIntToFixed(z));
-
-            c->rasterizer.procs.color4xv(c, c->currentColorClamped.v);
-            c->rasterizer.procs.disable(c, GGL_W_LERP);
-            c->rasterizer.procs.disable(c, GGL_AA);
-            c->rasterizer.procs.shadeModel(c, GL_FLAT);
-            c->rasterizer.procs.recti(c, x, y, x+w, y+h);
-
-            ogles_unlock_textures(c);
-
-            return;
-        }
-    }
-
-slow_case:
-    drawTexxOESImp(
-            gglIntToFixed(x), gglIntToFixed(y), gglIntToFixed(z),
-            gglIntToFixed(w), gglIntToFixed(h),
-            c);
-}
-
-
-}; // namespace android
-// ----------------------------------------------------------------------------
-
-using namespace android;
-
-
-#if 0
-#pragma mark -
-#pragma mark Texture API
-#endif
-
-void glActiveTexture(GLenum texture)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (uint32_t(texture-GL_TEXTURE0) > uint32_t(GGL_TEXTURE_UNIT_COUNT)) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    c->textures.active = texture - GL_TEXTURE0;
-    c->rasterizer.procs.activeTexture(c, c->textures.active);
-}
-
-void glBindTexture(GLenum target, GLuint texture)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (target != GL_TEXTURE_2D && target != GL_TEXTURE_EXTERNAL_OES) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-
-    // Bind or create a texture
-    sp<EGLTextureObject> tex;
-    if (texture == 0) {
-        // 0 is our local texture object
-        tex = c->textures.defaultTexture;
-    } else {
-        tex = c->surfaceManager->texture(texture);
-        if (ggl_unlikely(tex == 0)) {
-            tex = c->surfaceManager->createTexture(texture);
-            if (tex == 0) {
-                ogles_error(c, GL_OUT_OF_MEMORY);
-                return;
-            }
-        }
-    }
-    bindTextureTmu(c, c->textures.active, texture, tex);
-}
-
-void glGenTextures(GLsizei n, GLuint *textures)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (n<0) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-    // generate unique (shared) texture names
-    c->surfaceManager->getToken(n, textures);
-}
-
-void glDeleteTextures(GLsizei n, const GLuint *textures)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (n<0) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    // If deleting a bound texture, bind this unit to 0
-    for (int t=0 ; t<GGL_TEXTURE_UNIT_COUNT ; t++) {
-        if (c->textures.tmu[t].name == 0)
-            continue;
-        for (int i=0 ; i<n ; i++) {
-            if (textures[i] && (textures[i] == c->textures.tmu[t].name)) {
-                // bind this tmu to texture 0
-                sp<EGLTextureObject> tex(c->textures.defaultTexture);
-                bindTextureTmu(c, t, 0, tex);
-            }
-        }
-    }
-    c->surfaceManager->deleteTextures(n, textures);
-    c->surfaceManager->recycleTokens(n, textures);
-}
-
-void glMultiTexCoord4f(
-        GLenum target, GLfloat s, GLfloat t, GLfloat r, GLfloat q)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (uint32_t(target-GL_TEXTURE0) > uint32_t(GGL_TEXTURE_UNIT_COUNT)) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    const int tmu = target-GL_TEXTURE0;
-    c->current.texture[tmu].S = gglFloatToFixed(s);
-    c->current.texture[tmu].T = gglFloatToFixed(t);
-    c->current.texture[tmu].R = gglFloatToFixed(r);
-    c->current.texture[tmu].Q = gglFloatToFixed(q);
-}
-
-void glMultiTexCoord4x(
-        GLenum target, GLfixed s, GLfixed t, GLfixed r, GLfixed q)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (uint32_t(target-GL_TEXTURE0) > uint32_t(GGL_TEXTURE_UNIT_COUNT)) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    const int tmu = target-GL_TEXTURE0;
-    c->current.texture[tmu].S = s;
-    c->current.texture[tmu].T = t;
-    c->current.texture[tmu].R = r;
-    c->current.texture[tmu].Q = q;
-}
-
-void glPixelStorei(GLenum pname, GLint param)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if ((pname != GL_PACK_ALIGNMENT) && (pname != GL_UNPACK_ALIGNMENT)) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    if ((param<=0 || param>8) || (param & (param-1))) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-    if (pname == GL_PACK_ALIGNMENT)
-        c->textures.packAlignment = param;
-    if (pname == GL_UNPACK_ALIGNMENT)
-        c->textures.unpackAlignment = param;
-}
-
-void glTexEnvf(GLenum target, GLenum pname, GLfloat param)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    c->rasterizer.procs.texEnvi(c, target, pname, GLint(param));
-}
-
-void glTexEnvfv(
-        GLenum target, GLenum pname, const GLfloat *params)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (pname == GL_TEXTURE_ENV_MODE) {
-        c->rasterizer.procs.texEnvi(c, target, pname, GLint(*params));
-        return;
-    }
-    if (pname == GL_TEXTURE_ENV_COLOR) {
-        GGLfixed fixed[4];
-        for (int i=0 ; i<4 ; i++)
-            fixed[i] = gglFloatToFixed(params[i]);
-        c->rasterizer.procs.texEnvxv(c, target, pname, fixed);
-        return;
-    }
-    ogles_error(c, GL_INVALID_ENUM);
-}
-
-void glTexEnvx(GLenum target, GLenum pname, GLfixed param)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    c->rasterizer.procs.texEnvi(c, target, pname, param);
-}
-
-void glTexEnvxv(
-        GLenum target, GLenum pname, const GLfixed *params)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    c->rasterizer.procs.texEnvxv(c, target, pname, params);
-}
-
-void glTexParameteriv(
-        GLenum target, GLenum pname, const GLint* params)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (target != GL_TEXTURE_2D && target != GL_TEXTURE_EXTERNAL_OES) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-
-    EGLTextureObject* textureObject = c->textures.tmu[c->textures.active].texture;
-    switch (pname) {
-    case GL_TEXTURE_CROP_RECT_OES:
-        memcpy(textureObject->crop_rect, params, 4*sizeof(GLint));
-        break;
-    default:
-        texParameterx(target, pname, GLfixed(params[0]), c);
-        return;
-    }
-}
-
-void glTexParameterf(
-        GLenum target, GLenum pname, GLfloat param)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    texParameterx(target, pname, GLfixed(param), c);
-}
-
-void glTexParameterx(
-        GLenum target, GLenum pname, GLfixed param)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    texParameterx(target, pname, param, c);
-}
-
-void glTexParameteri(
-        GLenum target, GLenum pname, GLint param)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    texParameterx(target, pname, GLfixed(param), c);
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
-void glCompressedTexImage2D(
-        GLenum target, GLint level, GLenum internalformat,
-        GLsizei width, GLsizei height, GLint border,
-        GLsizei imageSize, const GLvoid *data)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (target != GL_TEXTURE_2D) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    if (width<0 || height<0 || border!=0) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    // "uncompress" the texture since pixelflinger doesn't support
-    // any compressed texture format natively.
-    GLenum format;
-    GLenum type;
-    switch (internalformat) {
-    case GL_PALETTE8_RGB8_OES:
-    case GL_PALETTE4_RGB8_OES:
-        format      = GL_RGB;
-        type        = GL_UNSIGNED_BYTE;
-        break;
-    case GL_PALETTE8_RGBA8_OES:
-    case GL_PALETTE4_RGBA8_OES:
-        format      = GL_RGBA;
-        type        = GL_UNSIGNED_BYTE;
-        break;
-    case GL_PALETTE8_R5_G6_B5_OES:
-    case GL_PALETTE4_R5_G6_B5_OES:
-        format      = GL_RGB;
-        type        = GL_UNSIGNED_SHORT_5_6_5;
-        break;
-    case GL_PALETTE8_RGBA4_OES:
-    case GL_PALETTE4_RGBA4_OES:
-        format      = GL_RGBA;
-        type        = GL_UNSIGNED_SHORT_4_4_4_4;
-        break;
-    case GL_PALETTE8_RGB5_A1_OES:
-    case GL_PALETTE4_RGB5_A1_OES:
-        format      = GL_RGBA;
-        type        = GL_UNSIGNED_SHORT_5_5_5_1;
-        break;
-#ifdef GL_OES_compressed_ETC1_RGB8_texture
-    case GL_ETC1_RGB8_OES:
-        format      = GL_RGB;
-        type        = GL_UNSIGNED_BYTE;
-        break;
-#endif
-    default:
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-
-    if (!data || !width || !height) {
-        // unclear if this is an error or not...
-        return;
-    }
-
-    int32_t size;
-    GGLSurface* surface;
-
-#ifdef GL_OES_compressed_ETC1_RGB8_texture
-    if (internalformat == GL_ETC1_RGB8_OES) {
-        GLsizei compressedSize = etc1_get_encoded_data_size(width, height);
-        if (compressedSize > imageSize) {
-            ogles_error(c, GL_INVALID_VALUE);
-            return;
-        }
-        int error = createTextureSurface(c, &surface, &size,
-                level, format, type, width, height);
-        if (error) {
-            ogles_error(c, error);
-            return;
-        }
-        if (etc1_decode_image(
-                (const etc1_byte*)data,
-                (etc1_byte*)surface->data,
-                width, height, 3, surface->stride*3) != 0) {
-            ogles_error(c, GL_INVALID_OPERATION);
-        }
-        return;
-    }
-#endif
-
-    // all mipmap levels are specified at once.
-    const int numLevels = level<0 ? -level : 1;
-
-    if (dataSizePalette4(numLevels, width, height, format) > imageSize) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    for (int i=0 ; i<numLevels ; i++) {
-        int lod_w = (width  >> i) ? : 1;
-        int lod_h = (height >> i) ? : 1;
-        int error = createTextureSurface(c, &surface, &size,
-                i, format, type, lod_w, lod_h);
-        if (error) {
-            ogles_error(c, error);
-            return;
-        }
-        decodePalette4(data, i, width, height,
-                surface->data, surface->stride, internalformat);
-    }
-}
-
-
-void glTexImage2D(
-        GLenum target, GLint level, GLint internalformat,
-        GLsizei width, GLsizei height, GLint border,
-        GLenum format, GLenum type, const GLvoid *pixels)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (target != GL_TEXTURE_2D) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    if (width<0 || height<0 || border!=0 || level < 0) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-    if (format != (GLenum)internalformat) {
-        ogles_error(c, GL_INVALID_OPERATION);
-        return;
-    }
-    if (validFormatType(c, format, type)) {
-        return;
-    }
-
-    int32_t size = 0;
-    GGLSurface* surface = 0;
-    int error = createTextureSurface(c, &surface, &size,
-            level, format, type, width, height);
-    if (error) {
-        ogles_error(c, error);
-        return;
-    }
-
-    if (pixels) {
-        const int32_t formatIdx = convertGLPixelFormat(format, type);
-        const GGLFormat& pixelFormat(c->rasterizer.formats[formatIdx]);
-        const int32_t align = c->textures.unpackAlignment-1;
-        const int32_t bpr = ((width * pixelFormat.size) + align) & ~align;
-        const int32_t stride = bpr / pixelFormat.size;
-
-        GGLSurface userSurface;
-        userSurface.version = sizeof(userSurface);
-        userSurface.width  = width;
-        userSurface.height = height;
-        userSurface.stride = stride;
-        userSurface.format = formatIdx;
-        userSurface.compressedFormat = 0;
-        userSurface.data = (GLubyte*)pixels;
-
-        int err = copyPixels(c, *surface, 0, 0, userSurface, 0, 0, width, height);
-        if (err) {
-            ogles_error(c, err);
-            return;
-        }
-        generateMipmap(c, level);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-void glCompressedTexSubImage2D(
-        GLenum /*target*/, GLint /*level*/, GLint /*xoffset*/,
-        GLint /*yoffset*/, GLsizei /*width*/, GLsizei /*height*/,
-        GLenum /*format*/, GLsizei /*imageSize*/,
-        const GLvoid* /*data*/)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    ogles_error(c, GL_INVALID_ENUM);
-}
-
-void glTexSubImage2D(
-        GLenum target, GLint level, GLint xoffset,
-        GLint yoffset, GLsizei width, GLsizei height,
-        GLenum format, GLenum type, const GLvoid *pixels)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (target != GL_TEXTURE_2D) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    if (xoffset<0 || yoffset<0 || width<0 || height<0 || level<0) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-    if (validFormatType(c, format, type)) {
-        return;
-    }
-
-    // find out which texture is bound to the current unit
-    const int active = c->textures.active;
-    EGLTextureObject* tex = c->textures.tmu[active].texture;
-    const GGLSurface& surface(tex->mip(level));
-
-    if (!tex->internalformat || tex->direct) {
-        ogles_error(c, GL_INVALID_OPERATION);
-        return;
-    }
-
-    if (format != tex->internalformat) {
-        ogles_error(c, GL_INVALID_OPERATION);
-        return;
-    }
-    if ((xoffset + width  > GLsizei(surface.width)) ||
-        (yoffset + height > GLsizei(surface.height))) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-    if (!width || !height) {
-        return; // okay, but no-op.
-    }
-
-    // figure out the size we need as well as the stride
-    const int32_t formatIdx = convertGLPixelFormat(format, type);
-    if (formatIdx == 0) { // we don't know what to do with this
-        ogles_error(c, GL_INVALID_OPERATION);
-        return;
-    }
-
-    const GGLFormat& pixelFormat(c->rasterizer.formats[formatIdx]);
-    const int32_t align = c->textures.unpackAlignment-1;
-    const int32_t bpr = ((width * pixelFormat.size) + align) & ~align;
-    const int32_t stride = bpr / pixelFormat.size;
-    GGLSurface userSurface;
-    userSurface.version = sizeof(userSurface);
-    userSurface.width  = width;
-    userSurface.height = height;
-    userSurface.stride = stride;
-    userSurface.format = formatIdx;
-    userSurface.compressedFormat = 0;
-    userSurface.data = (GLubyte*)pixels;
-
-    int err = copyPixels(c,
-            surface, xoffset, yoffset,
-            userSurface, 0, 0, width, height);
-    if (err) {
-        ogles_error(c, err);
-        return;
-    }
-
-    generateMipmap(c, level);
-
-    // since we only changed the content of the texture, we don't need
-    // to call bindTexture on the main rasterizer.
-}
-
-// ----------------------------------------------------------------------------
-
-void glCopyTexImage2D(
-        GLenum target, GLint level, GLenum internalformat,
-        GLint x, GLint y, GLsizei width, GLsizei height,
-        GLint border)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (target != GL_TEXTURE_2D) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    if (internalformat<GL_ALPHA || internalformat>GL_LUMINANCE_ALPHA) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    if (width<0 || height<0 || border!=0 || level<0) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    GLenum format = 0;
-    GLenum type = GL_UNSIGNED_BYTE;
-    const GGLSurface& cbSurface = c->rasterizer.state.buffers.color.s;
-    const int cbFormatIdx = cbSurface.format;
-    switch (cbFormatIdx) {
-    case GGL_PIXEL_FORMAT_RGB_565:
-        type = GL_UNSIGNED_SHORT_5_6_5;
-        break;
-    case GGL_PIXEL_FORMAT_RGBA_5551:
-        type = GL_UNSIGNED_SHORT_5_5_5_1;
-        break;
-    case GGL_PIXEL_FORMAT_RGBA_4444:
-        type = GL_UNSIGNED_SHORT_4_4_4_4;
-        break;
-    }
-    switch (internalformat) {
-    case GL_ALPHA:
-    case GL_LUMINANCE_ALPHA:
-    case GL_LUMINANCE:
-        type = GL_UNSIGNED_BYTE;
-        break;
-    }
-
-    // figure out the format to use for the new texture
-    switch (cbFormatIdx) {
-    case GGL_PIXEL_FORMAT_RGBA_8888:
-    case GGL_PIXEL_FORMAT_A_8:
-    case GGL_PIXEL_FORMAT_RGBA_5551:
-    case GGL_PIXEL_FORMAT_RGBA_4444:
-        format = internalformat;
-        break;
-    case GGL_PIXEL_FORMAT_RGBX_8888:
-    case GGL_PIXEL_FORMAT_RGB_888:
-    case GGL_PIXEL_FORMAT_RGB_565:
-    case GGL_PIXEL_FORMAT_L_8:
-        switch (internalformat) {
-        case GL_LUMINANCE:
-        case GL_RGB:
-            format = internalformat;
-            break;
-        }
-        break;
-    }
-
-    if (format == 0) {
-        // invalid combination
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-
-    // create the new texture...
-    int32_t size;
-    GGLSurface* surface;
-    int error = createTextureSurface(c, &surface, &size,
-            level, format, type, width, height);
-    if (error) {
-        ogles_error(c, error);
-        return;
-    }
-
-    // The bottom row is stored first in textures
-    GGLSurface txSurface(*surface);
-    txSurface.stride = -txSurface.stride;
-
-    // (x,y) is the lower-left corner of colorBuffer
-    y = cbSurface.height - (y + height);
-
-    /* The GLES spec says:
-     * If any of the pixels within the specified rectangle are outside
-     * the framebuffer associated with the current rendering context,
-     * then the values obtained for those pixels are undefined.
-     */
-    if (x+width > GLint(cbSurface.width))
-        width = cbSurface.width - x;
-
-    if (y+height > GLint(cbSurface.height))
-        height = cbSurface.height - y;
-
-    int err = copyPixels(c,
-            txSurface, 0, 0,
-            cbSurface, x, y, width, height);
-    if (err) {
-        ogles_error(c, err);
-    }
-
-    generateMipmap(c, level);
-}
-
-void glCopyTexSubImage2D(
-        GLenum target, GLint level, GLint xoffset, GLint yoffset,
-        GLint x, GLint y, GLsizei width, GLsizei height)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (target != GL_TEXTURE_2D) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    if (xoffset<0 || yoffset<0 || width<0 || height<0 || level<0) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-    if (!width || !height) {
-        return; // okay, but no-op.
-    }
-
-    // find out which texture is bound to the current unit
-    const int active = c->textures.active;
-    EGLTextureObject* tex = c->textures.tmu[active].texture;
-    const GGLSurface& surface(tex->mip(level));
-
-    if (!tex->internalformat) {
-        ogles_error(c, GL_INVALID_OPERATION);
-        return;
-    }
-    if ((xoffset + width  > GLsizei(surface.width)) ||
-        (yoffset + height > GLsizei(surface.height))) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    // The bottom row is stored first in textures
-    GGLSurface txSurface(surface);
-    txSurface.stride = -txSurface.stride;
-
-    // (x,y) is the lower-left corner of colorBuffer
-    const GGLSurface& cbSurface = c->rasterizer.state.buffers.color.s;
-    y = cbSurface.height - (y + height);
-
-    /* The GLES spec says:
-     * If any of the pixels within the specified rectangle are outside
-     * the framebuffer associated with the current rendering context,
-     * then the values obtained for those pixels are undefined.
-     */
-    if (x+width > GLint(cbSurface.width))
-        width = cbSurface.width - x;
-
-    if (y+height > GLint(cbSurface.height))
-        height = cbSurface.height - y;
-
-    int err = copyPixels(c,
-            txSurface, xoffset, yoffset,
-            cbSurface, x, y, width, height);
-    if (err) {
-        ogles_error(c, err);
-        return;
-    }
-
-    generateMipmap(c, level);
-}
-
-void glReadPixels(
-        GLint x, GLint y, GLsizei width, GLsizei height,
-        GLenum format, GLenum type, GLvoid *pixels)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if ((format != GL_RGBA) && (format != GL_RGB)) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    if ((type != GL_UNSIGNED_BYTE) && (type != GL_UNSIGNED_SHORT_5_6_5)) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-    if (width<0 || height<0) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-    if (x<0 || y<0) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    int32_t formatIdx = GGL_PIXEL_FORMAT_NONE;
-    if ((format == GL_RGBA) && (type == GL_UNSIGNED_BYTE)) {
-        formatIdx = GGL_PIXEL_FORMAT_RGBA_8888;
-    } else if ((format == GL_RGB) && (type == GL_UNSIGNED_SHORT_5_6_5)) {
-        formatIdx = GGL_PIXEL_FORMAT_RGB_565;
-    } else {
-        ogles_error(c, GL_INVALID_OPERATION);
-        return;
-    }
-
-    const GGLSurface& readSurface = c->rasterizer.state.buffers.read.s;
-    if ((x+width > GLint(readSurface.width)) ||
-            (y+height > GLint(readSurface.height))) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    const GGLFormat& pixelFormat(c->rasterizer.formats[formatIdx]);
-    const int32_t align = c->textures.packAlignment-1;
-    const int32_t bpr = ((width * pixelFormat.size) + align) & ~align;
-    const int32_t stride = bpr / pixelFormat.size;
-
-    GGLSurface userSurface;
-    userSurface.version = sizeof(userSurface);
-    userSurface.width  = width;
-    userSurface.height = height;
-    userSurface.stride = -stride; // bottom row is transfered first
-    userSurface.format = formatIdx;
-    userSurface.compressedFormat = 0;
-    userSurface.data = (GLubyte*)pixels;
-
-    // use pixel-flinger to handle all the conversions
-    GGLContext* ggl = getRasterizer(c);
-    if (!ggl) {
-        // the only reason this would fail is because we ran out of memory
-        ogles_error(c, GL_OUT_OF_MEMORY);
-        return;
-    }
-
-    ggl->colorBuffer(ggl, &userSurface);  // destination is user buffer
-    ggl->bindTexture(ggl, &readSurface);  // source is read-buffer
-    ggl->texCoord2i(ggl, x, readSurface.height - (y + height));
-    ggl->recti(ggl, 0, 0, width, height);
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark DrawTexture Extension
-#endif
-
-void glDrawTexsvOES(const GLshort* coords) {
-    ogles_context_t* c = ogles_context_t::get();
-    drawTexiOES(coords[0], coords[1], coords[2], coords[3], coords[4], c);
-}
-void glDrawTexivOES(const GLint* coords) {
-    ogles_context_t* c = ogles_context_t::get();
-    drawTexiOES(coords[0], coords[1], coords[2], coords[3], coords[4], c);
-}
-void glDrawTexsOES(GLshort x , GLshort y, GLshort z, GLshort w, GLshort h) {
-    ogles_context_t* c = ogles_context_t::get();
-    drawTexiOES(x, y, z, w, h, c);
-}
-void glDrawTexiOES(GLint x, GLint y, GLint z, GLint w, GLint h) {
-    ogles_context_t* c = ogles_context_t::get();
-    drawTexiOES(x, y, z, w, h, c);
-}
-
-void glDrawTexfvOES(const GLfloat* coords) {
-    ogles_context_t* c = ogles_context_t::get();
-    drawTexxOES(
-            gglFloatToFixed(coords[0]),
-            gglFloatToFixed(coords[1]),
-            gglFloatToFixed(coords[2]),
-            gglFloatToFixed(coords[3]),
-            gglFloatToFixed(coords[4]),
-            c);
-}
-void glDrawTexxvOES(const GLfixed* coords) {
-    ogles_context_t* c = ogles_context_t::get();
-    drawTexxOES(coords[0], coords[1], coords[2], coords[3], coords[4], c);
-}
-void glDrawTexfOES(GLfloat x, GLfloat y, GLfloat z, GLfloat w, GLfloat h){
-    ogles_context_t* c = ogles_context_t::get();
-    drawTexxOES(
-            gglFloatToFixed(x), gglFloatToFixed(y), gglFloatToFixed(z),
-            gglFloatToFixed(w), gglFloatToFixed(h),
-            c);
-}
-void glDrawTexxOES(GLfixed x, GLfixed y, GLfixed z, GLfixed w, GLfixed h) {
-    ogles_context_t* c = ogles_context_t::get();
-    drawTexxOES(x, y, z, w, h, c);
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark EGL Image Extension
-#endif
-
-void glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (target != GL_TEXTURE_2D && target != GL_TEXTURE_EXTERNAL_OES) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-
-    if (image == EGL_NO_IMAGE_KHR) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    ANativeWindowBuffer* native_buffer = (ANativeWindowBuffer*)image;
-    if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-    if (native_buffer->common.version != sizeof(ANativeWindowBuffer)) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    // bind it to the texture unit
-    sp<EGLTextureObject> tex = getAndBindActiveTextureObject(c);
-    tex->setImage(native_buffer);
-}
-
-void glEGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
-{
-    ogles_context_t* c = ogles_context_t::get();
-    if (target != GL_RENDERBUFFER_OES) {
-        ogles_error(c, GL_INVALID_ENUM);
-        return;
-    }
-
-    if (image == EGL_NO_IMAGE_KHR) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    ANativeWindowBuffer* native_buffer = (ANativeWindowBuffer*)image;
-    if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-    if (native_buffer->common.version != sizeof(ANativeWindowBuffer)) {
-        ogles_error(c, GL_INVALID_VALUE);
-        return;
-    }
-
-    // well, we're not supporting this extension anyways
-}