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, 441 insertions, 0 deletions

diff --git a/emulator/opengl/shared/OpenglCodecCommon/GLClientState.h b/emulator/opengl/shared/OpenglCodecCommon/GLClientState.h
new file mode 100644
index 0000000..c86329b
--- /dev/null
+++ b/emulator/opengl/shared/OpenglCodecCommon/GLClientState.h
@@ -0,0 +1,441 @@
+/*
+* 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.
+*/
+#ifndef _GL_CLIENT_STATE_H_
+#define _GL_CLIENT_STATE_H_
+
+#define GL_API
+#ifndef ANDROID
+#define GL_APIENTRY
+#define GL_APIENTRYP
+#endif
+
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "ErrorLog.h"
+#include "codec_defs.h"
+
+class GLClientState {
+public:
+    typedef enum {
+        VERTEX_LOCATION = 0,
+        NORMAL_LOCATION = 1,
+        COLOR_LOCATION = 2,
+        POINTSIZE_LOCATION = 3,
+        TEXCOORD0_LOCATION = 4,
+        TEXCOORD1_LOCATION = 5,
+        TEXCOORD2_LOCATION = 6,
+        TEXCOORD3_LOCATION = 7,
+        TEXCOORD4_LOCATION = 8,
+        TEXCOORD5_LOCATION = 9,
+        TEXCOORD6_LOCATION = 10,
+        TEXCOORD7_LOCATION = 11,
+        MATRIXINDEX_LOCATION = 12,
+        WEIGHT_LOCATION = 13,
+        LAST_LOCATION = 14
+    } StateLocation;
+
+    typedef struct {
+        GLint enabled;
+        GLint size;
+        GLenum type;
+        GLsizei stride;
+        void *data;
+        GLuint bufferObject;
+        GLenum glConst;
+        unsigned int elementSize;
+        bool enableDirty;  // true if any enable state has changed since last draw
+        bool normalized;
+    } VertexAttribState;
+
+    typedef struct {
+        int unpack_alignment;
+        int pack_alignment;
+    } PixelStoreState;
+
+    enum {
+        MAX_TEXTURE_UNITS = 32,
+    };
+
+public:
+    GLClientState(int nLocations = CODEC_MAX_VERTEX_ATTRIBUTES);
+    ~GLClientState();
+    int nLocations() { return m_nLocations; }
+    const PixelStoreState *pixelStoreState() { return &m_pixelStore; }
+    int setPixelStore(GLenum param, GLint value);
+    GLuint currentArrayVbo() { return m_currentArrayVbo; }
+    GLuint currentIndexVbo() { return m_currentIndexVbo; }
+    void enable(int location, int state);
+    void setState(int  location, int size, GLenum type, GLboolean normalized, GLsizei stride, const void *data);
+    void setBufferObject(int location, GLuint id);
+    const VertexAttribState  *getState(int location);
+    const VertexAttribState  *getStateAndEnableDirty(int location, bool *enableChanged);
+    int getLocation(GLenum loc);
+    void setActiveTexture(int texUnit) {m_activeTexture = texUnit; };
+    int getActiveTexture() const { return m_activeTexture; }
+
+    int bindBuffer(GLenum target, GLuint id)
+    {
+        int err = 0;
+        switch(target) {
+        case GL_ARRAY_BUFFER:
+            m_currentArrayVbo = id;
+            break;
+        case GL_ELEMENT_ARRAY_BUFFER:
+            m_currentIndexVbo = id;
+            break;
+        default:
+            err = -1;
+        }
+        return err;
+    }
+
+    int getBuffer(GLenum target)
+    {
+      int ret=0;
+      switch (target) {
+      case GL_ARRAY_BUFFER:
+          ret = m_currentArrayVbo;
+          break;
+      case GL_ELEMENT_ARRAY_BUFFER:
+          ret = m_currentIndexVbo;
+          break;
+      default:
+          ret = -1;
+      }
+      return ret;
+    }
+    size_t pixelDataSize(GLsizei width, GLsizei height, GLenum format, GLenum type, int pack) const;
+
+    void setCurrentProgram(GLint program) { m_currentProgram = program; }
+    GLint currentProgram() const { return m_currentProgram; }
+
+    /* OES_EGL_image_external
+     *
+     * These functions manipulate GL state which interacts with the
+     * OES_EGL_image_external extension, to support client-side emulation on
+     * top of host implementations that don't have it.
+     *
+     * Most of these calls should only be used with TEXTURE_2D or
+     * TEXTURE_EXTERNAL_OES texture targets; TEXTURE_CUBE_MAP or other extension
+     * targets should bypass this. An exception is bindTexture(), which should
+     * see all glBindTexture() calls for any target.
+     */
+
+    // glActiveTexture(GL_TEXTURE0 + i)
+    // Sets the active texture unit. Up to MAX_TEXTURE_UNITS are supported.
+    GLenum setActiveTextureUnit(GLenum texture);
+    GLenum getActiveTextureUnit() const;
+
+    // glEnable(GL_TEXTURE_(2D|EXTERNAL_OES))
+    void enableTextureTarget(GLenum target);
+
+    // glDisable(GL_TEXTURE_(2D|EXTERNAL_OES))
+    void disableTextureTarget(GLenum target);
+
+    // Implements the target priority logic:
+    // * Return GL_TEXTURE_EXTERNAL_OES if enabled, else
+    // * Return GL_TEXTURE_2D if enabled, else
+    // * Return the allDisabled value.
+    // For some cases passing GL_TEXTURE_2D for allDisabled makes callee code
+    // simpler; for other cases passing a recognizable enum like GL_ZERO or
+    // GL_INVALID_ENUM is appropriate.
+    GLenum getPriorityEnabledTarget(GLenum allDisabled) const;
+
+    // glBindTexture(GL_TEXTURE_*, ...)
+    // Set the target binding of the active texture unit to texture. Returns
+    // GL_NO_ERROR on success or GL_INVALID_OPERATION if the texture has
+    // previously been bound to a different target. If firstUse is not NULL,
+    // it is set to indicate whether this is the first use of the texture.
+    // For accurate error detection, bindTexture should be called for *all*
+    // targets, not just 2D and EXTERNAL_OES.
+    GLenum bindTexture(GLenum target, GLuint texture, GLboolean* firstUse);
+
+    // Return the texture currently bound to GL_TEXTURE_(2D|EXTERNAL_OES).
+    GLuint getBoundTexture(GLenum target) const;
+
+    // glDeleteTextures(...)
+    // Remove references to the to-be-deleted textures.
+    void deleteTextures(GLsizei n, const GLuint* textures);
+
+private:
+    PixelStoreState m_pixelStore;
+    VertexAttribState *m_states;
+    int m_nLocations;
+    GLuint m_currentArrayVbo;
+    GLuint m_currentIndexVbo;
+    int m_activeTexture;
+    GLint m_currentProgram;
+
+    bool validLocation(int location) { return (location >= 0 && location < m_nLocations); }
+
+    enum TextureTarget {
+        TEXTURE_2D = 0,
+        TEXTURE_EXTERNAL = 1,
+        TEXTURE_TARGET_COUNT
+    };
+    struct TextureUnit {
+        unsigned int enables;
+        GLuint texture[TEXTURE_TARGET_COUNT];
+    };
+    struct TextureRec {
+        GLuint id;
+        GLenum target;
+    };
+    struct TextureState {
+        TextureUnit unit[MAX_TEXTURE_UNITS];
+        TextureUnit* activeUnit;
+        TextureRec* textures;
+        GLuint numTextures;
+        GLuint allocTextures;
+    };
+    TextureState m_tex;
+
+    static int compareTexId(const void* pid, const void* prec);
+    TextureRec* addTextureRec(GLuint id, GLenum target);
+
+public:
+    void getClientStatePointer(GLenum pname, GLvoid** params);
+
+    template <class T>
+    int getVertexAttribParameter(GLuint index, GLenum param, T *ptr)
+    {
+        bool handled = true;
+        const VertexAttribState *vertexAttrib = getState(index);
+        if (vertexAttrib == NULL) {
+            ERR("getVeterxAttriParameter for non existant index %d\n", index);
+            // set gl error;
+            return handled;
+        }
+
+        switch(param) {
+        case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING:
+            *ptr = (T)(vertexAttrib->bufferObject);
+            break;
+        case GL_VERTEX_ATTRIB_ARRAY_ENABLED:
+            *ptr = (T)(vertexAttrib->enabled);
+            break;
+        case GL_VERTEX_ATTRIB_ARRAY_SIZE:
+            *ptr = (T)(vertexAttrib->size);
+            break;
+        case GL_VERTEX_ATTRIB_ARRAY_STRIDE:
+            *ptr = (T)(vertexAttrib->stride);
+            break;
+        case GL_VERTEX_ATTRIB_ARRAY_TYPE:
+            *ptr = (T)(vertexAttrib->type);
+            break;
+        case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED:
+            *ptr = (T)(vertexAttrib->normalized);
+            break;
+        case GL_CURRENT_VERTEX_ATTRIB:
+            handled = false;
+            break;
+        default:
+            handled = false;
+            ERR("unknown vertex-attrib parameter param %d\n", param);
+        }
+        return handled;
+    }
+
+    template <class T>
+    bool getClientStateParameter(GLenum param, T* ptr)
+    {
+        bool isClientStateParam = false;
+        switch (param) {
+        case GL_CLIENT_ACTIVE_TEXTURE: {
+            GLint tex = getActiveTexture() + GL_TEXTURE0;
+            *ptr = tex;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_VERTEX_ARRAY_SIZE: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::VERTEX_LOCATION);
+            *ptr = state->size;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_VERTEX_ARRAY_TYPE: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::VERTEX_LOCATION);
+            *ptr = state->type;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_VERTEX_ARRAY_STRIDE: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::VERTEX_LOCATION);
+            *ptr = state->stride;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_COLOR_ARRAY_SIZE: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::COLOR_LOCATION);
+            *ptr = state->size;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_COLOR_ARRAY_TYPE: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::COLOR_LOCATION);
+            *ptr = state->type;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_COLOR_ARRAY_STRIDE: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::COLOR_LOCATION);
+            *ptr = state->stride;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_NORMAL_ARRAY_TYPE: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::NORMAL_LOCATION);
+            *ptr = state->type;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_NORMAL_ARRAY_STRIDE: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::NORMAL_LOCATION);
+            *ptr = state->stride;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_TEXTURE_COORD_ARRAY_SIZE: {
+            const GLClientState::VertexAttribState *state = getState(getActiveTexture() + GLClientState::TEXCOORD0_LOCATION);
+            *ptr = state->size;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_TEXTURE_COORD_ARRAY_TYPE: {
+            const GLClientState::VertexAttribState *state = getState(getActiveTexture() + GLClientState::TEXCOORD0_LOCATION);
+            *ptr = state->type;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_TEXTURE_COORD_ARRAY_STRIDE: {
+            const GLClientState::VertexAttribState *state = getState(getActiveTexture() + GLClientState::TEXCOORD0_LOCATION);
+            *ptr = state->stride;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_POINT_SIZE_ARRAY_TYPE_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::POINTSIZE_LOCATION);
+            *ptr = state->type;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_POINT_SIZE_ARRAY_STRIDE_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::POINTSIZE_LOCATION);
+            *ptr = state->stride;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_MATRIX_INDEX_ARRAY_SIZE_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::MATRIXINDEX_LOCATION);
+            *ptr = state->size;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_MATRIX_INDEX_ARRAY_TYPE_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::MATRIXINDEX_LOCATION);
+            *ptr = state->type;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_MATRIX_INDEX_ARRAY_STRIDE_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::MATRIXINDEX_LOCATION);
+            *ptr = state->stride;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_WEIGHT_ARRAY_SIZE_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::WEIGHT_LOCATION);
+            *ptr = state->size;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_WEIGHT_ARRAY_TYPE_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::WEIGHT_LOCATION);
+            *ptr = state->type;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_WEIGHT_ARRAY_STRIDE_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::WEIGHT_LOCATION);
+            *ptr = state->stride;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_VERTEX_ARRAY_BUFFER_BINDING: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::VERTEX_LOCATION);
+            *ptr = state->bufferObject;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_NORMAL_ARRAY_BUFFER_BINDING: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::NORMAL_LOCATION);
+            *ptr = state->bufferObject;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_COLOR_ARRAY_BUFFER_BINDING: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::COLOR_LOCATION);
+            *ptr = state->bufferObject;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING: {
+            const GLClientState::VertexAttribState *state = getState(getActiveTexture()+GLClientState::TEXCOORD0_LOCATION);
+            *ptr = state->bufferObject;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::POINTSIZE_LOCATION);
+            *ptr = state->bufferObject;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_MATRIX_INDEX_ARRAY_BUFFER_BINDING_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::MATRIXINDEX_LOCATION);
+            *ptr = state->bufferObject;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_WEIGHT_ARRAY_BUFFER_BINDING_OES: {
+            const GLClientState::VertexAttribState *state = getState(GLClientState::WEIGHT_LOCATION);
+            *ptr = state->bufferObject;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_ARRAY_BUFFER_BINDING: {
+            int buffer = getBuffer(GL_ARRAY_BUFFER);
+            *ptr = buffer;
+            isClientStateParam = true;
+            break;
+            }
+        case GL_ELEMENT_ARRAY_BUFFER_BINDING: {
+            int buffer = getBuffer(GL_ELEMENT_ARRAY_BUFFER);
+            *ptr = buffer;
+            isClientStateParam = true;
+            break;
+            }
+        }
+        return isClientStateParam;
+    }
+
+};
+#endif