void GrGLBuffer::onMap() {
if (this->wasDestroyed()) {
return;
}
VALIDATE();
SkASSERT(!this->isMapped());
if (0 == fBufferID) {
fMapPtr = fCPUData;
VALIDATE();
return;
}
// TODO: Make this a function parameter.
bool readOnly = (kXferGpuToCpu_GrBufferType == fIntendedType);
// Handling dirty context is done in the bindBuffer call
switch (this->glCaps().mapBufferType()) {
case GrGLCaps::kNone_MapBufferType:
break;
case GrGLCaps::kMapBuffer_MapBufferType: {
GrGLenum target = this->glGpu()->bindBuffer(fIntendedType, this);
// Let driver know it can discard the old data
if (GR_GL_USE_BUFFER_DATA_NULL_HINT || fGLSizeInBytes != fSizeInBytes) {
GL_CALL(BufferData(target, fSizeInBytes, nullptr, fUsage));
}
GL_CALL_RET(fMapPtr, MapBuffer(target, readOnly ? GR_GL_READ_ONLY : GR_GL_WRITE_ONLY));
break;
}
case GrGLCaps::kMapBufferRange_MapBufferType: {
GrGLenum target = this->glGpu()->bindBuffer(fIntendedType, this);
// Make sure the GL buffer size agrees with fDesc before mapping.
if (fGLSizeInBytes != fSizeInBytes) {
GL_CALL(BufferData(target, fSizeInBytes, nullptr, fUsage));
}
GrGLbitfield writeAccess = GR_GL_MAP_WRITE_BIT;
if (kXferCpuToGpu_GrBufferType != fIntendedType) {
// TODO: Make this a function parameter.
writeAccess |= GR_GL_MAP_INVALIDATE_BUFFER_BIT;
}
GL_CALL_RET(fMapPtr, MapBufferRange(target, 0, fSizeInBytes,
readOnly ? GR_GL_MAP_READ_BIT : writeAccess));
break;
}
case GrGLCaps::kChromium_MapBufferType: {
GrGLenum target = this->glGpu()->bindBuffer(fIntendedType, this);
// Make sure the GL buffer size agrees with fDesc before mapping.
if (fGLSizeInBytes != fSizeInBytes) {
GL_CALL(BufferData(target, fSizeInBytes, nullptr, fUsage));
}
GL_CALL_RET(fMapPtr, MapBufferSubData(target, 0, fSizeInBytes,
readOnly ? GR_GL_READ_ONLY : GR_GL_WRITE_ONLY));
break;
}
}
fGLSizeInBytes = fSizeInBytes;
VALIDATE();
}
void GrGLBuffer::onMap() {
SkASSERT(fBufferID);
SkASSERT(!this->wasDestroyed());
VALIDATE();
SkASSERT(!this->isMapped());
// TODO: Make this a function parameter.
bool readOnly = (GrGpuBufferType::kXferGpuToCpu == fIntendedType);
// Handling dirty context is done in the bindBuffer call
switch (this->glCaps().mapBufferType()) {
case GrGLCaps::kNone_MapBufferType:
return;
case GrGLCaps::kMapBuffer_MapBufferType: {
GrGLenum target = this->glGpu()->bindBuffer(fIntendedType, this);
if (!readOnly) {
// Let driver know it can discard the old data
if (this->glCaps().useBufferDataNullHint() || fGLSizeInBytes != this->size()) {
GL_CALL(BufferData(target, this->size(), nullptr, fUsage));
}
}
GL_CALL_RET(fMapPtr, MapBuffer(target, readOnly ? GR_GL_READ_ONLY : GR_GL_WRITE_ONLY));
break;
}
case GrGLCaps::kMapBufferRange_MapBufferType: {
GrGLenum target = this->glGpu()->bindBuffer(fIntendedType, this);
// Make sure the GL buffer size agrees with fDesc before mapping.
if (fGLSizeInBytes != this->size()) {
GL_CALL(BufferData(target, this->size(), nullptr, fUsage));
}
GrGLbitfield access;
if (readOnly) {
access = GR_GL_MAP_READ_BIT;
} else {
access = GR_GL_MAP_WRITE_BIT;
if (GrGpuBufferType::kXferCpuToGpu != fIntendedType) {
// TODO: Make this a function parameter.
access |= GR_GL_MAP_INVALIDATE_BUFFER_BIT;
}
}
GL_CALL_RET(fMapPtr, MapBufferRange(target, 0, this->size(), access));
break;
}
case GrGLCaps::kChromium_MapBufferType: {
GrGLenum target = this->glGpu()->bindBuffer(fIntendedType, this);
// Make sure the GL buffer size agrees with fDesc before mapping.
if (fGLSizeInBytes != this->size()) {
GL_CALL(BufferData(target, this->size(), nullptr, fUsage));
}
GL_CALL_RET(fMapPtr, MapBufferSubData(target, 0, this->size(),
readOnly ? GR_GL_READ_ONLY : GR_GL_WRITE_ONLY));
break;
}
}
fGLSizeInBytes = this->size();
VALIDATE();
}
void* GrGLBufferImpl::map(GrGpuGL* gpu) {
VALIDATE();
SkASSERT(!this->isMapped());
if (0 == fDesc.fID) {
fMapPtr = fCPUData;
} else {
switch (gpu->glCaps().mapBufferType()) {
case GrGLCaps::kNone_MapBufferType:
VALIDATE();
return NULL;
case GrGLCaps::kMapBuffer_MapBufferType:
this->bind(gpu);
// Let driver know it can discard the old data
if (GR_GL_USE_BUFFER_DATA_NULL_HINT || fDesc.fSizeInBytes != fGLSizeInBytes) {
fGLSizeInBytes = fDesc.fSizeInBytes;
GL_CALL(gpu,
BufferData(fBufferType, fGLSizeInBytes, NULL,
fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STATIC_DRAW));
}
GR_GL_CALL_RET(gpu->glInterface(), fMapPtr,
MapBuffer(fBufferType, GR_GL_WRITE_ONLY));
break;
case GrGLCaps::kMapBufferRange_MapBufferType: {
this->bind(gpu);
// Make sure the GL buffer size agrees with fDesc before mapping.
if (fDesc.fSizeInBytes != fGLSizeInBytes) {
fGLSizeInBytes = fDesc.fSizeInBytes;
GL_CALL(gpu,
BufferData(fBufferType, fGLSizeInBytes, NULL,
fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STATIC_DRAW));
}
static const GrGLbitfield kAccess = GR_GL_MAP_INVALIDATE_BUFFER_BIT |
GR_GL_MAP_WRITE_BIT;
GR_GL_CALL_RET(gpu->glInterface(),
fMapPtr,
MapBufferRange(fBufferType, 0, fGLSizeInBytes, kAccess));
break;
}
case GrGLCaps::kChromium_MapBufferType:
this->bind(gpu);
// Make sure the GL buffer size agrees with fDesc before mapping.
if (fDesc.fSizeInBytes != fGLSizeInBytes) {
fGLSizeInBytes = fDesc.fSizeInBytes;
GL_CALL(gpu,
BufferData(fBufferType, fGLSizeInBytes, NULL,
fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STATIC_DRAW));
}
GR_GL_CALL_RET(gpu->glInterface(),
fMapPtr,
MapBufferSubData(fBufferType, 0, fGLSizeInBytes, GR_GL_WRITE_ONLY));
break;
}
}
VALIDATE();
return fMapPtr;
}
/*******************************************************************************
*
* Buffer functions.
*
******************************************************************************/
int
rb_create_buffer
(struct rb_context* ctxt,
const struct rb_buffer_desc* public_desc,
const void* init_data,
struct rb_buffer** out_buffer)
{
const struct rb_ogl3_buffer_desc private_desc = {
.size = public_desc->size,
.target = public_to_private_rb_target(public_desc->target),
.usage = public_desc->usage
};
return rb_ogl3_create_buffer(ctxt, &private_desc,init_data, out_buffer);
}
int
rb_buffer_ref_get(struct rb_buffer* buffer)
{
if(!buffer)
return -1;
ref_get(&buffer->ref);
return 0;
}
int
rb_buffer_ref_put(struct rb_buffer* buffer)
{
if(!buffer)
return -1;
ref_put(&buffer->ref, release_buffer);
return 0;
}
int
rb_bind_buffer
(struct rb_context* ctxt,
struct rb_buffer* buffer,
enum rb_buffer_target target)
{
return rb_ogl3_bind_buffer(ctxt, buffer, public_to_private_rb_target(target));
}
int
rb_buffer_data
(struct rb_buffer* buffer,
int offset,
int size,
const void* data)
{
void* mapped_mem = NULL;
GLboolean unmap = GL_FALSE;
if(!buffer
|| (offset < 0)
|| (size < 0)
|| (size != 0 && !data)
|| (buffer->size < offset + size))
return -1;
if(size == 0)
return 0;
OGL(BindBuffer(buffer->target, buffer->name));
if(offset == 0 && size == buffer->size) {
mapped_mem = OGL(MapBuffer(buffer->target, GL_WRITE_ONLY));
} else {
const GLbitfield access = GL_MAP_WRITE_BIT;
mapped_mem = OGL(MapBufferRange(buffer->target, offset, size, access));
}
ASSERT(mapped_mem != NULL);
memcpy(mapped_mem, data, (size_t)size);
unmap = OGL(UnmapBuffer(buffer->target));
OGL(BindBuffer
(buffer->target,
buffer->ctxt->state_cache.buffer_binding[buffer->binding]));
/* unmap == GL_FALSE must be handled by the application. TODO return a real
* error code to differentiate this case from the error. */
return unmap == GL_TRUE ? 0 : -1;
}
