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/*
** Copyright 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 "header.h"
#include "egl_tls.h"
extern "C"
{
#include "liblzf/lzf.h"
}
namespace android
{
static pthread_key_t sEGLThreadLocalStorageKey = -1;
DbgContext * getDbgContextThreadSpecific()
{
tls_t* tls = (tls_t*)pthread_getspecific(sEGLThreadLocalStorageKey);
return tls->dbg;
}
DbgContext::DbgContext(const unsigned version, const gl_hooks_t * const hooks,
const unsigned MAX_VERTEX_ATTRIBS)
: lzf_buf(NULL), lzf_readIndex(0), lzf_refSize(0), lzf_refBufSize(0)
, version(version), hooks(hooks)
, MAX_VERTEX_ATTRIBS(MAX_VERTEX_ATTRIBS)
, vertexAttribs(new VertexAttrib[MAX_VERTEX_ATTRIBS])
, hasNonVBOAttribs(false), indexBuffers(NULL), indexBuffer(NULL)
, program(0), maxAttrib(0)
{
lzf_ref[0] = lzf_ref[1] = NULL;
for (unsigned i = 0; i < MAX_VERTEX_ATTRIBS; i++)
vertexAttribs[i] = VertexAttrib();
memset(&expectResponse, 0, sizeof(expectResponse));
}
DbgContext::~DbgContext()
{
delete vertexAttribs;
free(lzf_buf);
free(lzf_ref[0]);
free(lzf_ref[1]);
}
DbgContext * CreateDbgContext(const pthread_key_t EGLThreadLocalStorageKey,
const unsigned version, const gl_hooks_t * const hooks)
{
sEGLThreadLocalStorageKey = EGLThreadLocalStorageKey;
assert(version < 2);
assert(GL_NO_ERROR == hooks->gl.glGetError());
GLint MAX_VERTEX_ATTRIBS = 0;
hooks->gl.glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &MAX_VERTEX_ATTRIBS);
return new DbgContext(version, hooks, MAX_VERTEX_ATTRIBS);
}
void DestroyDbgContext(DbgContext * const dbg)
{
delete dbg;
}
unsigned GetBytesPerPixel(const GLenum format, const GLenum type)
{
switch (type) {
case GL_UNSIGNED_SHORT_5_6_5:
return 2;
case GL_UNSIGNED_SHORT_4_4_4_4:
return 2;
case GL_UNSIGNED_SHORT_5_5_5_1:
return 2;
case GL_UNSIGNED_BYTE:
break;
default:
assert(0);
}
switch (format) {
case GL_ALPHA:
return 1;
case GL_LUMINANCE:
return 1;
break;
case GL_LUMINANCE_ALPHA:
return 2;
case GL_RGB:
return 3;
case GL_RGBA:
return 4;
default:
assert(0);
return 0;
}
}
void DbgContext::Fetch(const unsigned index, std::string * const data) const
{
// VBO data is already on client, just send user pointer data
for (unsigned i = 0; i < maxAttrib; i++) {
if (!vertexAttribs[i].enabled)
continue;
if (vertexAttribs[i].buffer > 0)
continue;
const char * ptr = (const char *)vertexAttribs[i].ptr;
ptr += index * vertexAttribs[i].stride;
data->append(ptr, vertexAttribs[i].elemSize);
}
}
void DbgContext::Compress(const void * in_data, unsigned int in_len,
std::string * const outStr)
{
if (!lzf_buf)
lzf_buf = (char *)malloc(LZF_CHUNK_SIZE);
assert(lzf_buf);
const uint32_t totalDecompSize = in_len;
outStr->append((const char *)&totalDecompSize, sizeof(totalDecompSize));
for (unsigned int i = 0; i < in_len; i += LZF_CHUNK_SIZE) {
uint32_t chunkSize = LZF_CHUNK_SIZE;
if (i + LZF_CHUNK_SIZE > in_len)
chunkSize = in_len - i;
const uint32_t compSize = lzf_compress((const char *)in_data + i, chunkSize,
lzf_buf, LZF_CHUNK_SIZE);
outStr->append((const char *)&chunkSize, sizeof(chunkSize));
outStr->append((const char *)&compSize, sizeof(compSize));
if (compSize > 0)
outStr->append(lzf_buf, compSize);
else // compressed chunk bigger than LZF_CHUNK_SIZE (and uncompressed)
outStr->append((const char *)in_data + i, chunkSize);
}
}
void * DbgContext::GetReadPixelsBuffer(const unsigned size)
{
if (lzf_refBufSize < size + 8) {
lzf_refBufSize = size + 8;
lzf_ref[0] = (unsigned *)realloc(lzf_ref[0], lzf_refBufSize);
assert(lzf_ref[0]);
memset(lzf_ref[0], 0, lzf_refBufSize);
lzf_ref[1] = (unsigned *)realloc(lzf_ref[1], lzf_refBufSize);
assert(lzf_ref[1]);
memset(lzf_ref[1], 0, lzf_refBufSize);
}
if (lzf_refSize != size) // need to clear unused ref to maintain consistency
{ // since ref and src are swapped each time
memset((char *)lzf_ref[0] + lzf_refSize, 0, lzf_refBufSize - lzf_refSize);
memset((char *)lzf_ref[1] + lzf_refSize, 0, lzf_refBufSize - lzf_refSize);
}
lzf_refSize = size;
lzf_readIndex ^= 1;
return lzf_ref[lzf_readIndex];
}
void DbgContext::CompressReadPixelBuffer(std::string * const outStr)
{
assert(lzf_ref[0] && lzf_ref[1]);
unsigned * const ref = lzf_ref[lzf_readIndex ^ 1];
unsigned * const src = lzf_ref[lzf_readIndex];
for (unsigned i = 0; i < lzf_refSize / sizeof(*ref) + 1; i++)
ref[i] ^= src[i];
Compress(ref, lzf_refSize, outStr);
}
char * DbgContext::GetBuffer()
{
if (!lzf_buf)
lzf_buf = (char *)malloc(LZF_CHUNK_SIZE);
assert(lzf_buf);
return lzf_buf;
}
unsigned int DbgContext::GetBufferSize()
{
if (!lzf_buf)
lzf_buf = (char *)malloc(LZF_CHUNK_SIZE);
assert(lzf_buf);
if (lzf_buf)
return LZF_CHUNK_SIZE;
else
return 0;
}
void DbgContext::glUseProgram(GLuint program)
{
while (GLenum error = hooks->gl.glGetError())
LOGD("DbgContext::glUseProgram: before glGetError() = 0x%.4X", error);
this->program = program;
GLint activeAttributes = 0;
hooks->gl.glGetProgramiv(program, GL_ACTIVE_ATTRIBUTES, &activeAttributes);
maxAttrib = 0;
GLint maxNameLen = -1;
hooks->gl.glGetProgramiv(program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &maxNameLen);
char * name = new char [maxNameLen + 1];
name[maxNameLen] = 0;
// find total number of attribute slots used
for (unsigned i = 0; i < activeAttributes; i++) {
GLint size = -1;
GLenum type = -1;
hooks->gl.glGetActiveAttrib(program, i, maxNameLen + 1, NULL, &size, &type, name);
GLint slot = hooks->gl.glGetAttribLocation(program, name);
assert(slot >= 0);
switch (type) {
case GL_FLOAT:
case GL_FLOAT_VEC2:
case GL_FLOAT_VEC3:
case GL_FLOAT_VEC4:
slot += size;
break;
case GL_FLOAT_MAT2:
slot += size * 2;
break;
case GL_FLOAT_MAT3:
slot += size * 3;
break;
case GL_FLOAT_MAT4:
slot += size * 4;
break;
default:
assert(0);
}
if (slot > maxAttrib)
maxAttrib = slot;
}
delete name;
while (GLenum error = hooks->gl.glGetError())
LOGD("DbgContext::glUseProgram: after glGetError() = 0x%.4X", error);
}
static bool HasNonVBOAttribs(const DbgContext * const ctx)
{
bool need = false;
for (unsigned i = 0; !need && i < ctx->maxAttrib; i++)
if (ctx->vertexAttribs[i].enabled && ctx->vertexAttribs[i].buffer == 0)
need = true;
return need;
}
void DbgContext::glVertexAttribPointer(GLuint indx, GLint size, GLenum type,
GLboolean normalized, GLsizei stride, const GLvoid* ptr)
{
assert(GL_NO_ERROR == hooks->gl.glGetError());
assert(indx < MAX_VERTEX_ATTRIBS);
vertexAttribs[indx].size = size;
vertexAttribs[indx].type = type;
vertexAttribs[indx].normalized = normalized;
switch (type) {
case GL_FLOAT:
vertexAttribs[indx].elemSize = sizeof(GLfloat) * size;
break;
case GL_INT:
case GL_UNSIGNED_INT:
vertexAttribs[indx].elemSize = sizeof(GLint) * size;
break;
case GL_SHORT:
case GL_UNSIGNED_SHORT:
vertexAttribs[indx].elemSize = sizeof(GLshort) * size;
break;
case GL_BYTE:
case GL_UNSIGNED_BYTE:
vertexAttribs[indx].elemSize = sizeof(GLbyte) * size;
break;
default:
assert(0);
}
if (0 == stride)
stride = vertexAttribs[indx].elemSize;
vertexAttribs[indx].stride = stride;
vertexAttribs[indx].ptr = ptr;
hooks->gl.glGetVertexAttribiv(indx, GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING,
(GLint *)&vertexAttribs[indx].buffer);
hasNonVBOAttribs = HasNonVBOAttribs(this);
}
void DbgContext::glEnableVertexAttribArray(GLuint index)
{
assert(index < MAX_VERTEX_ATTRIBS);
vertexAttribs[index].enabled = true;
hasNonVBOAttribs = HasNonVBOAttribs(this);
}
void DbgContext::glDisableVertexAttribArray(GLuint index)
{
assert(index < MAX_VERTEX_ATTRIBS);
vertexAttribs[index].enabled = false;
hasNonVBOAttribs = HasNonVBOAttribs(this);
}
void DbgContext::glBindBuffer(GLenum target, GLuint buffer)
{
if (GL_ELEMENT_ARRAY_BUFFER != target)
return;
if (0 == buffer) {
indexBuffer = NULL;
return;
}
VBO * b = indexBuffers;
indexBuffer = NULL;
while (b) {
if (b->name == buffer) {
assert(GL_ELEMENT_ARRAY_BUFFER == b->target);
indexBuffer = b;
break;
}
b = b->next;
}
if (!indexBuffer)
indexBuffer = indexBuffers = new VBO(buffer, target, indexBuffers);
}
void DbgContext::glBufferData(GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage)
{
if (GL_ELEMENT_ARRAY_BUFFER != target)
return;
assert(indexBuffer);
assert(size >= 0);
indexBuffer->size = size;
indexBuffer->data = realloc(indexBuffer->data, size);
memcpy(indexBuffer->data, data, size);
}
void DbgContext::glBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid* data)
{
if (GL_ELEMENT_ARRAY_BUFFER != target)
return;
assert(indexBuffer);
assert(size >= 0);
assert(offset >= 0);
assert(offset + size <= indexBuffer->size);
memcpy((char *)indexBuffer->data + offset, data, size);
}
void DbgContext::glDeleteBuffers(GLsizei n, const GLuint *buffers)
{
for (unsigned i = 0; i < n; i++) {
for (unsigned j = 0; j < MAX_VERTEX_ATTRIBS; j++)
if (buffers[i] == vertexAttribs[j].buffer) {
vertexAttribs[j].buffer = 0;
vertexAttribs[j].enabled = false;
}
VBO * b = indexBuffers, * previous = NULL;
while (b) {
if (b->name == buffers[i]) {
assert(GL_ELEMENT_ARRAY_BUFFER == b->target);
if (indexBuffer == b)
indexBuffer = NULL;
if (previous)
previous->next = b->next;
else
indexBuffers = b->next;
free(b->data);
delete b;
break;
}
previous = b;
b = b->next;
}
}
hasNonVBOAttribs = HasNonVBOAttribs(this);
}
}; // namespace android
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