Move emulator GLES from development.git to sdk.git

The emulator GLES support has two interfaces: a host shared library
interface used by QEMU, and a protocol between the platform and the
host. The host library interface is not versioned; QEMU and the GLES
renderer must match. The protocol on the other hand must be backwards
compatible: a new GLES renderer must support an older platform image.

Thus for branching purposes it makes more sense to put the GLES
renderer in sdk.git, which is branched along with qemu.git for SDK
releases. Platform images will be built against the protocol version
in the platform branch of sdk.git.

Change-Id: I2c3bce627ecfd0a4b3e688d1839fe10755a21e58

1 files changed, 417 insertions, 0 deletions

diff --git a/emulator/opengl/shared/OpenglCodecCommon/GLClientState.cpp b/emulator/opengl/shared/OpenglCodecCommon/GLClientState.cpp
new file mode 100644
index 0000000..9795490
--- /dev/null
+++ b/emulator/opengl/shared/OpenglCodecCommon/GLClientState.cpp
@@ -0,0 +1,417 @@
+/*
+* 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 "GLClientState.h"
+#include "ErrorLog.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "glUtils.h"
+#include <cutils/log.h>
+
+#ifndef MAX
+#define MAX(a, b) ((a) < (b) ? (b) : (a))
+#endif
+
+GLClientState::GLClientState(int nLocations)
+{
+    if (nLocations < LAST_LOCATION) {
+        nLocations = LAST_LOCATION;
+    }
+    m_nLocations = nLocations;
+    m_states = new VertexAttribState[m_nLocations];
+    for (int i = 0; i < m_nLocations; i++) {
+        m_states[i].enabled = 0;
+        m_states[i].enableDirty = false;
+    }
+    m_currentArrayVbo = 0;
+    m_currentIndexVbo = 0;
+    // init gl constans;
+    m_states[VERTEX_LOCATION].glConst = GL_VERTEX_ARRAY;
+    m_states[NORMAL_LOCATION].glConst = GL_NORMAL_ARRAY;
+    m_states[COLOR_LOCATION].glConst = GL_COLOR_ARRAY;
+    m_states[POINTSIZE_LOCATION].glConst = GL_POINT_SIZE_ARRAY_OES;
+    m_states[TEXCOORD0_LOCATION].glConst = GL_TEXTURE_COORD_ARRAY;
+    m_states[TEXCOORD1_LOCATION].glConst = GL_TEXTURE_COORD_ARRAY;
+    m_states[TEXCOORD2_LOCATION].glConst = GL_TEXTURE_COORD_ARRAY;
+    m_states[TEXCOORD3_LOCATION].glConst = GL_TEXTURE_COORD_ARRAY;
+    m_states[TEXCOORD4_LOCATION].glConst = GL_TEXTURE_COORD_ARRAY;
+    m_states[TEXCOORD5_LOCATION].glConst = GL_TEXTURE_COORD_ARRAY;
+    m_states[TEXCOORD6_LOCATION].glConst = GL_TEXTURE_COORD_ARRAY;
+    m_states[TEXCOORD7_LOCATION].glConst = GL_TEXTURE_COORD_ARRAY;
+    m_states[MATRIXINDEX_LOCATION].glConst = GL_MATRIX_INDEX_ARRAY_OES;
+    m_states[WEIGHT_LOCATION].glConst = GL_WEIGHT_ARRAY_OES;
+    m_activeTexture = 0;
+    m_currentProgram = 0;
+
+    m_pixelStore.unpack_alignment = 4;
+    m_pixelStore.pack_alignment = 4;
+
+    memset(m_tex.unit, 0, sizeof(m_tex.unit));
+    m_tex.activeUnit = &m_tex.unit[0];
+    m_tex.textures = NULL;
+    m_tex.numTextures = 0;
+    m_tex.allocTextures = 0;
+}
+
+GLClientState::~GLClientState()
+{
+    delete m_states;
+}
+
+void GLClientState::enable(int location, int state)
+{
+    if (!validLocation(location)) {
+        return;
+    }
+
+    m_states[location].enableDirty |= (state != m_states[location].enabled);
+    m_states[location].enabled = state;
+}
+
+void GLClientState::setState(int location, int size, GLenum type, GLboolean normalized, GLsizei stride, const void *data)
+{
+    if (!validLocation(location)) {
+        return;
+    }
+    m_states[location].size = size;
+    m_states[location].type = type;
+    m_states[location].stride = stride;
+    m_states[location].data = (void*)data;
+    m_states[location].bufferObject = m_currentArrayVbo;
+    m_states[location].elementSize = glSizeof(type) * size;
+    m_states[location].normalized = normalized;
+}
+
+void GLClientState::setBufferObject(int location, GLuint id)
+{
+    if (!validLocation(location)) {
+        return;
+    }
+
+    m_states[location].bufferObject = id;
+}
+
+const GLClientState::VertexAttribState * GLClientState::getState(int location)
+{
+    if (!validLocation(location)) {
+        return NULL;
+    }
+    return & m_states[location];
+}
+
+const GLClientState::VertexAttribState * GLClientState::getStateAndEnableDirty(int location, bool *enableChanged)
+{
+    if (!validLocation(location)) {
+        return NULL;
+    }
+
+    if (enableChanged) {
+        *enableChanged = m_states[location].enableDirty;
+    }
+
+    m_states[location].enableDirty = false;
+    return & m_states[location];
+}
+
+int GLClientState::getLocation(GLenum loc)
+{
+    int retval;
+
+    switch(loc) {
+    case GL_VERTEX_ARRAY:
+        retval = int(VERTEX_LOCATION);
+        break;
+    case GL_NORMAL_ARRAY:
+        retval = int(NORMAL_LOCATION);
+        break;
+    case GL_COLOR_ARRAY:
+        retval = int(COLOR_LOCATION);
+        break;
+    case GL_POINT_SIZE_ARRAY_OES:
+        retval = int(POINTSIZE_LOCATION);
+        break;
+    case GL_TEXTURE_COORD_ARRAY:
+        retval = int (TEXCOORD0_LOCATION + m_activeTexture);
+        break;
+    case GL_MATRIX_INDEX_ARRAY_OES:
+        retval = int (MATRIXINDEX_LOCATION);
+        break;
+    case GL_WEIGHT_ARRAY_OES:
+        retval = int (WEIGHT_LOCATION);
+        break;
+    default:
+        retval = loc;
+    }
+    return retval;
+}
+
+void GLClientState::getClientStatePointer(GLenum pname, GLvoid** params)
+{
+    const GLClientState::VertexAttribState *state = NULL;
+    switch (pname) {
+    case GL_VERTEX_ARRAY_POINTER: {
+        state = getState(GLClientState::VERTEX_LOCATION);
+        break;
+        }
+    case GL_NORMAL_ARRAY_POINTER: {
+        state = getState(GLClientState::NORMAL_LOCATION);
+        break;
+        }
+    case GL_COLOR_ARRAY_POINTER: {
+        state = getState(GLClientState::COLOR_LOCATION);
+        break;
+        }
+    case GL_TEXTURE_COORD_ARRAY_POINTER: {
+        state = getState(getActiveTexture() + GLClientState::TEXCOORD0_LOCATION);
+        break;
+        }
+    case GL_POINT_SIZE_ARRAY_POINTER_OES: {
+        state = getState(GLClientState::POINTSIZE_LOCATION);
+        break;
+        }
+    case GL_MATRIX_INDEX_ARRAY_POINTER_OES: {
+        state = getState(GLClientState::MATRIXINDEX_LOCATION);
+        break;
+        }
+    case GL_WEIGHT_ARRAY_POINTER_OES: {
+        state = getState(GLClientState::WEIGHT_LOCATION);
+        break;
+        }
+    }
+    if (state && params)
+        *params = state->data;
+}
+
+int GLClientState::setPixelStore(GLenum param, GLint value)
+{
+    int retval = 0;
+    switch(param) {
+    case GL_UNPACK_ALIGNMENT:
+        if (value == 1 || value == 2 || value == 4 || value == 8) {
+            m_pixelStore.unpack_alignment = value;
+        } else {
+            retval =  GL_INVALID_VALUE;
+        }
+        break;
+    case GL_PACK_ALIGNMENT:
+        if (value == 1 || value == 2 || value == 4 || value == 8) {
+            m_pixelStore.pack_alignment = value;
+        } else {
+            retval =  GL_INVALID_VALUE;
+        }
+        break;
+        default:
+            retval = GL_INVALID_ENUM;
+    }
+    return retval;
+}
+
+
+
+
+size_t GLClientState::pixelDataSize(GLsizei width, GLsizei height, GLenum format, GLenum type, int pack) const
+{
+    int pixelsize = glUtilsPixelBitSize(format, type) >> 3;
+
+    int alignment = pack ? m_pixelStore.pack_alignment : m_pixelStore.unpack_alignment;
+
+    if (pixelsize == 0 ) {
+        ERR("unknown pixel size: width: %d height: %d format: %d type: %d pack: %d align: %d\n",
+             width, height, format, type, pack, alignment);
+    }
+    size_t linesize = pixelsize * width;
+    size_t aligned_linesize = int(linesize / alignment) * alignment;
+    if (aligned_linesize < linesize) {
+        aligned_linesize += alignment;
+    }
+    return aligned_linesize * height;
+}
+
+GLenum GLClientState::setActiveTextureUnit(GLenum texture)
+{
+    GLuint unit = texture - GL_TEXTURE0;
+    if (unit >= MAX_TEXTURE_UNITS) {
+        return GL_INVALID_OPERATION;
+    }
+    m_tex.activeUnit = &m_tex.unit[unit];
+    return GL_NO_ERROR;
+}
+
+GLenum GLClientState::getActiveTextureUnit() const
+{
+    return GL_TEXTURE0 + (m_tex.activeUnit - &m_tex.unit[0]);
+}
+
+void GLClientState::enableTextureTarget(GLenum target)
+{
+    switch (target) {
+    case GL_TEXTURE_2D:
+        m_tex.activeUnit->enables |= (1u << TEXTURE_2D);
+        break;
+    case GL_TEXTURE_EXTERNAL_OES:
+        m_tex.activeUnit->enables |= (1u << TEXTURE_EXTERNAL);
+        break;
+    }
+}
+
+void GLClientState::disableTextureTarget(GLenum target)
+{
+    switch (target) {
+    case GL_TEXTURE_2D:
+        m_tex.activeUnit->enables &= ~(1u << TEXTURE_2D);
+        break;
+    case GL_TEXTURE_EXTERNAL_OES:
+        m_tex.activeUnit->enables &= ~(1u << TEXTURE_EXTERNAL);
+        break;
+    }
+}
+
+GLenum GLClientState::getPriorityEnabledTarget(GLenum allDisabled) const
+{
+    unsigned int enables = m_tex.activeUnit->enables;
+    if (enables & (1u << TEXTURE_EXTERNAL)) {
+        return GL_TEXTURE_EXTERNAL_OES;
+    } else if (enables & (1u << TEXTURE_2D)) {
+        return GL_TEXTURE_2D;
+    } else {
+        return allDisabled;
+    }
+}
+
+int GLClientState::compareTexId(const void* pid, const void* prec)
+{
+    const GLuint* id = (const GLuint*)pid;
+    const TextureRec* rec = (const TextureRec*)prec;
+    return (GLint)(*id) - (GLint)rec->id;
+}
+
+GLenum GLClientState::bindTexture(GLenum target, GLuint texture,
+        GLboolean* firstUse)
+{
+    GLboolean first = GL_FALSE;
+    TextureRec* texrec = NULL;
+    if (texture != 0) {
+        if (m_tex.textures) {
+            texrec = (TextureRec*)bsearch(&texture, m_tex.textures,
+                    m_tex.numTextures, sizeof(TextureRec), compareTexId);
+        }
+        if (!texrec) {
+            if (!(texrec = addTextureRec(texture, target))) {
+                return GL_OUT_OF_MEMORY;
+            }
+            first = GL_TRUE;
+        }
+        if (target != texrec->target) {
+            return GL_INVALID_OPERATION;
+        }
+    }
+
+    switch (target) {
+    case GL_TEXTURE_2D:
+        m_tex.activeUnit->texture[TEXTURE_2D] = texture;
+        break;
+    case GL_TEXTURE_EXTERNAL_OES:
+        m_tex.activeUnit->texture[TEXTURE_EXTERNAL] = texture;
+        break;
+    }
+
+    if (firstUse) {
+        *firstUse = first;
+    }
+
+    return GL_NO_ERROR;
+}
+
+GLClientState::TextureRec* GLClientState::addTextureRec(GLuint id,
+        GLenum target)
+{
+    if (m_tex.numTextures == m_tex.allocTextures) {
+        const GLuint MAX_TEXTURES = 0xFFFFFFFFu;
+
+        GLuint newAlloc;
+        if (MAX_TEXTURES - m_tex.allocTextures >= m_tex.allocTextures) {
+            newAlloc = MAX(4, 2 * m_tex.allocTextures);
+        } else {
+            if (m_tex.allocTextures == MAX_TEXTURES) {
+                return NULL;
+            }
+            newAlloc = MAX_TEXTURES;
+        }
+
+        TextureRec* newTextures = (TextureRec*)realloc(m_tex.textures,
+                newAlloc * sizeof(TextureRec));
+        if (!newTextures) {
+            return NULL;
+        }
+
+        m_tex.textures = newTextures;
+        m_tex.allocTextures = newAlloc;
+    }
+
+    TextureRec* tex = m_tex.textures + m_tex.numTextures;
+    TextureRec* prev = tex - 1;
+    while (tex != m_tex.textures && id < prev->id) {
+        *tex-- = *prev--;
+    }
+    tex->id = id;
+    tex->target = target;
+    m_tex.numTextures++;
+
+    return tex;
+}
+
+GLuint GLClientState::getBoundTexture(GLenum target) const
+{
+    switch (target) {
+    case GL_TEXTURE_2D:
+        return m_tex.activeUnit->texture[TEXTURE_2D];
+    case GL_TEXTURE_EXTERNAL_OES:
+        return m_tex.activeUnit->texture[TEXTURE_EXTERNAL];
+    default:
+        return 0;
+    }
+}
+
+void GLClientState::deleteTextures(GLsizei n, const GLuint* textures)
+{
+    // Updating the textures array could be made more efficient when deleting
+    // several textures:
+    // - compacting the array could be done in a single pass once the deleted
+    //   textures are marked, or
+    // - could swap deleted textures to the end and re-sort.
+    TextureRec* texrec;
+    for (const GLuint* texture = textures; texture != textures + n; texture++) {
+        texrec = (TextureRec*)bsearch(texture, m_tex.textures,
+                m_tex.numTextures, sizeof(TextureRec), compareTexId);
+        if (texrec) {
+            const TextureRec* end = m_tex.textures + m_tex.numTextures;
+            memmove(texrec, texrec + 1,
+                    (end - texrec - 1) * sizeof(TextureRec));
+            m_tex.numTextures--;
+
+            for (TextureUnit* unit = m_tex.unit;
+                 unit != m_tex.unit + MAX_TEXTURE_UNITS;
+                 unit++)
+            {
+                if (unit->texture[TEXTURE_2D] == *texture) {
+                    unit->texture[TEXTURE_2D] = 0;
+                } else if (unit->texture[TEXTURE_EXTERNAL] == *texture) {
+                    unit->texture[TEXTURE_EXTERNAL] = 0;
+                }
+            }
+        }
+    }
+}