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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file contains the command buffer helper class.
#ifndef O3D_COMMAND_BUFFER_CLIENT_CROSS_CMD_BUFFER_HELPER_H_
#define O3D_COMMAND_BUFFER_CLIENT_CROSS_CMD_BUFFER_HELPER_H_
#include "command_buffer/common/cross/logging.h"
#include "command_buffer/common/cross/buffer_sync_api.h"
#include "command_buffer/common/cross/cmd_buffer_format.h"
namespace o3d {
namespace command_buffer {
// Command buffer helper class. This class simplifies ring buffer management:
// it will allocate the buffer, give it to the buffer interface, and let the
// user add commands to it, while taking care of the synchronization (put and
// get). It also provides a way to ensure commands have been executed, through
// the token mechanism:
//
// helper.AddCommand(...);
// helper.AddCommand(...);
// unsigned int token = helper.InsertToken();
// helper.AddCommand(...);
// helper.AddCommand(...);
// [...]
//
// helper.WaitForToken(token); // this doesn't return until the first two
// // commands have been executed.
class CommandBufferHelper {
public:
// Constructs a CommandBufferHelper object. The helper needs to be
// initialized by calling Init() before use.
// Parameters:
// interface: the buffer interface the helper sends commands to.
explicit CommandBufferHelper(BufferSyncInterface *interface);
~CommandBufferHelper();
// Initializes the command buffer by allocating shared memory.
// Parameters:
// entry_count: the number of entries in the buffer. Note that commands
// sent through the buffer must use at most entry_count-2 arguments
// (entry_count-1 size).
// Returns:
// true if successful.
bool Init(unsigned int entry_count);
// Flushes the commands, setting the put pointer to let the buffer interface
// know that new commands have been added.
void Flush() {
interface_->Put(put_);
}
// Waits until all the commands have been executed.
void Finish();
// Waits until a given number of available entries are available.
// Parameters:
// count: number of entries needed. This value must be at most
// the size of the buffer minus one.
void WaitForAvailableEntries(unsigned int count);
// Adds a command data to the command buffer. This may wait until sufficient
// space is available.
// Parameters:
// entries: The command entries to add.
// count: The number of entries.
void AddCommandData(const CommandBufferEntry* entries, unsigned int count) {
WaitForAvailableEntries(count);
for (; count > 0; --count) {
entries_[put_++] = *entries++;
}
DCHECK_LE(put_, entry_count_);
if (put_ == entry_count_) put_ = 0;
}
// A typed version of AddCommandData.
template <typename T>
void AddTypedCmdData(const T& cmd) {
AddCommandData(reinterpret_cast<const CommandBufferEntry*>(&cmd),
ComputeNumEntries(sizeof(cmd)));
}
// Adds a command to the command buffer. This may wait until sufficient space
// is available.
// Parameters:
// command: the command index.
// arg_count: the number of arguments for the command.
// args: the arguments for the command (these are copied before the
// function returns).
void AddCommand(unsigned int command,
unsigned int arg_count,
const CommandBufferEntry *args) {
CommandHeader header;
header.size = arg_count + 1;
header.command = command;
WaitForAvailableEntries(header.size);
entries_[put_++].value_header = header;
for (unsigned int i = 0; i < arg_count; ++i) {
entries_[put_++] = args[i];
}
DCHECK_LE(put_, entry_count_);
if (put_ == entry_count_) put_ = 0;
}
// Inserts a new token into the command buffer. This token either has a value
// different from previously inserted tokens, or ensures that previously
// inserted tokens with that value have already passed through the command
// stream.
// Returns:
// the value of the new token.
unsigned int InsertToken();
// Waits until the token of a particular value has passed through the command
// stream (i.e. commands inserted before that token have been executed).
// NOTE: This will call Flush if it needs to block.
// Parameters:
// the value of the token to wait for.
void WaitForToken(unsigned int token);
// Returns the buffer interface used to send synchronous commands.
BufferSyncInterface *interface() { return interface_; }
// Waits for a certain amount of space to be available. Returns address
// of space.
CommandBufferEntry* GetSpace(uint32 entries);
// Typed version of GetSpace. Gets enough room for the given type and returns
// a reference to it.
template <typename T>
T& GetCmdSpace() {
COMPILE_ASSERT(T::kArgFlags == cmd::kFixed, Cmd_kArgFlags_not_kFixed);
uint32 space_needed = ComputeNumEntries(sizeof(T));
void* data = GetSpace(space_needed);
return *reinterpret_cast<T*>(data);
}
// Typed version of GetSpace for immediate commands.
template <typename T>
T& GetImmediateCmdSpace(size_t space) {
COMPILE_ASSERT(T::kArgFlags == cmd::kAtLeastN, Cmd_kArgFlags_not_kAtLeastN);
uint32 space_needed = ComputeNumEntries(sizeof(T) + space);
void* data = GetSpace(space_needed);
return *reinterpret_cast<T*>(data);
}
// ------------------ Individual commands ----------------------
void Noop(uint32 skip_count) {
cmd::Noop& cmd = GetImmediateCmdSpace<cmd::Noop>(
skip_count * sizeof(CommandBufferEntry));
cmd.Init(skip_count);
}
void SetToken(uint32 token) {
cmd::SetToken& cmd = GetCmdSpace<cmd::SetToken>();
cmd.Init(token);
}
void BeginFrame() {
cmd::BeginFrame& cmd = GetCmdSpace<cmd::BeginFrame>();
cmd.Init();
}
void EndFrame() {
cmd::EndFrame& cmd = GetCmdSpace<cmd::EndFrame>();
cmd.Init();
}
void Clear(
uint32 buffers,
float red, float green, float blue, float alpha,
float depth, uint32 stencil) {
cmd::Clear& cmd = GetCmdSpace<cmd::Clear>();
cmd.Init(buffers, red, green, blue, alpha, depth, stencil);
}
void SetViewport(
uint32 left,
uint32 top,
uint32 width,
uint32 height,
float z_min,
float z_max) {
cmd::SetViewport& cmd = GetCmdSpace<cmd::SetViewport>();
cmd.Init(left, top, width, height, z_min, z_max);
}
void CreateVertexBuffer(
ResourceId vertex_buffer_id, uint32 size, vertex_buffer::Flags flags) {
cmd::CreateVertexBuffer& cmd = GetCmdSpace<cmd::CreateVertexBuffer>();
cmd.Init(vertex_buffer_id, size, flags);
}
void DestroyVertexBuffer(ResourceId vertex_buffer_id) {
cmd::DestroyVertexBuffer& cmd = GetCmdSpace<cmd::DestroyVertexBuffer>();
cmd.Init(vertex_buffer_id);
}
void SetVertexBufferDataImmediate(
ResourceId vertex_buffer_id, uint32 offset,
const void* data, uint32 size) {
cmd::SetVertexBufferDataImmediate& cmd =
GetImmediateCmdSpace<cmd::SetVertexBufferDataImmediate>(size);
cmd.Init(vertex_buffer_id, offset, data, size);
}
void SetVertexBufferData(
ResourceId vertex_buffer_id, uint32 offset, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::SetVertexBufferData& cmd =
GetCmdSpace<cmd::SetVertexBufferData>();
cmd.Init(vertex_buffer_id, offset, size,
shared_memory_id, shared_memory_offset);
}
void GetVertexBufferData(
ResourceId vertex_buffer_id, uint32 offset, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::GetVertexBufferData& cmd =
GetCmdSpace<cmd::GetVertexBufferData>();
cmd.Init(vertex_buffer_id, offset, size,
shared_memory_id, shared_memory_offset);
}
void CreateIndexBuffer(
ResourceId index_buffer_id, uint32 size, index_buffer::Flags flags) {
cmd::CreateIndexBuffer& cmd =
GetCmdSpace<cmd::CreateIndexBuffer>();
cmd.Init(index_buffer_id, size, flags);
}
void DestroyIndexBuffer(ResourceId index_buffer_id) {
cmd::DestroyIndexBuffer& cmd = GetCmdSpace<cmd::DestroyIndexBuffer>();
cmd.Init(index_buffer_id);
}
void SetIndexBufferDataImmediate(
ResourceId index_buffer_id, uint32 offset,
const void* data, uint32 size) {
cmd::SetIndexBufferDataImmediate& cmd =
GetImmediateCmdSpace<cmd::SetIndexBufferDataImmediate>(size);
cmd.Init(index_buffer_id, offset, data, size);
}
void SetIndexBufferData(
ResourceId index_buffer_id, uint32 offset, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::SetIndexBufferData& cmd = GetCmdSpace<cmd::SetIndexBufferData>();
cmd.Init(index_buffer_id, offset, size,
shared_memory_id, shared_memory_offset);
}
void GetIndexBufferData(
ResourceId index_buffer_id, uint32 offset, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::GetIndexBufferData& cmd = GetCmdSpace<cmd::GetIndexBufferData>();
cmd.Init(index_buffer_id, offset, size,
shared_memory_id, shared_memory_offset);
}
void CreateVertexStruct(ResourceId vertex_struct_id, uint32 input_count) {
cmd::CreateVertexStruct& cmd = GetCmdSpace<cmd::CreateVertexStruct>();
cmd.Init(vertex_struct_id, input_count);
}
void DestroyVertexStruct(ResourceId vertex_struct_id) {
cmd::DestroyVertexStruct& cmd = GetCmdSpace<cmd::DestroyVertexStruct>();
cmd.Init(vertex_struct_id);
}
void SetVertexInput(
ResourceId vertex_struct_id,
uint32 input_index,
ResourceId vertex_buffer_id,
uint32 offset,
vertex_struct::Semantic semantic,
uint32 semantic_index,
vertex_struct::Type type,
uint32 stride) {
cmd::SetVertexInput& cmd = GetCmdSpace<cmd::SetVertexInput>();
cmd.Init(
vertex_struct_id,
input_index,
vertex_buffer_id,
offset,
semantic,
semantic_index,
type,
stride);
}
void SetVertexStruct(ResourceId vertex_struct_id) {
cmd::SetVertexStruct& cmd = GetCmdSpace<cmd::SetVertexStruct>();
cmd.Init(vertex_struct_id);
}
void Draw(PrimitiveType primitive_type, uint32 first, uint32 count) {
cmd::Draw& cmd = GetCmdSpace<cmd::Draw>();
cmd.Init(primitive_type, first, count);
}
void DrawIndexed(
PrimitiveType primitive_type,
ResourceId index_buffer_id,
uint32 first,
uint32 count,
uint32 min_index,
uint32 max_index) {
cmd::DrawIndexed& cmd = GetCmdSpace<cmd::DrawIndexed>();
cmd.Init(
primitive_type,
index_buffer_id,
first,
count,
min_index,
max_index);
}
void CreateEffect(
ResourceId effect_id, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::CreateEffect& cmd = GetCmdSpace<cmd::CreateEffect>();
cmd.Init(effect_id, size, shared_memory_id, shared_memory_offset);
}
void CreateEffectImmediate(
ResourceId effect_id, uint32 size, const void* data) {
cmd::CreateEffectImmediate& cmd =
GetImmediateCmdSpace<cmd::CreateEffectImmediate>(size);
cmd.Init(effect_id, size, data);
}
void DestroyEffect(ResourceId effect_id) {
cmd::DestroyEffect& cmd = GetCmdSpace<cmd::DestroyEffect>();
cmd.Init(effect_id);
}
void SetEffect(ResourceId effect_id) {
cmd::SetEffect& cmd = GetCmdSpace<cmd::SetEffect>();
cmd.Init(effect_id);
}
void GetParamCount(
ResourceId effect_id, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::GetParamCount& cmd = GetCmdSpace<cmd::GetParamCount>();
cmd.Init(effect_id, size, shared_memory_id, shared_memory_offset);
}
void CreateParam(ResourceId param_id, ResourceId effect_id, uint32 index) {
cmd::CreateParam& cmd = GetCmdSpace<cmd::CreateParam>();
cmd.Init(param_id, effect_id, index);
}
void CreateParamByName(
ResourceId param_id, ResourceId effect_id, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::CreateParamByName& cmd = GetCmdSpace<cmd::CreateParamByName>();
cmd.Init(param_id, effect_id, size, shared_memory_id, shared_memory_offset);
}
void CreateParamByNameImmediate(
ResourceId param_id, ResourceId effect_id,
uint32 size, const void* data) {
cmd::CreateParamByNameImmediate& cmd =
GetImmediateCmdSpace<cmd::CreateParamByNameImmediate>(size);
cmd.Init(param_id, effect_id, size, data);
}
void DestroyParam(ResourceId param_id) {
cmd::DestroyParam& cmd = GetCmdSpace<cmd::DestroyParam>();
cmd.Init(param_id);
}
void SetParamData(
ResourceId param_id, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::SetParamData& cmd = GetCmdSpace<cmd::SetParamData>();
cmd.Init(param_id, size, shared_memory_id, shared_memory_offset);
}
void SetParamDataImmediate(
ResourceId param_id, uint32 size, const void* data) {
cmd::SetParamDataImmediate& cmd =
GetImmediateCmdSpace<cmd::SetParamDataImmediate>(size);
cmd.Init(param_id, size, data);
}
void GetParamDesc(
ResourceId param_id, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::GetParamDesc& cmd = GetCmdSpace<cmd::GetParamDesc>();
cmd.Init(param_id, size, shared_memory_id, shared_memory_offset);
}
void GetStreamCount(
ResourceId effect_id, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::GetStreamCount& cmd = GetCmdSpace<cmd::GetStreamCount>();
cmd.Init(effect_id, size, shared_memory_id, shared_memory_offset);
}
void GetStreamDesc(
ResourceId effect_id, uint32 index, uint32 size,
uint32 shared_memory_id, uint32 shared_memory_offset) {
cmd::GetStreamDesc& cmd = GetCmdSpace<cmd::GetStreamDesc>();
cmd.Init(effect_id, index, size, shared_memory_id, shared_memory_offset);
}
void DestroyTexture(ResourceId texture_id) {
cmd::DestroyTexture& cmd = GetCmdSpace<cmd::DestroyTexture>();
cmd.Init(texture_id);
}
void CreateTexture2d(
ResourceId texture_id,
uint32 width, uint32 height,
uint32 levels, texture::Format format,
bool enable_render_surfaces) {
cmd::CreateTexture2d& cmd = GetCmdSpace<cmd::CreateTexture2d>();
cmd.Init(texture_id,
width, height, levels, format,
enable_render_surfaces);
}
void CreateTexture3d(
ResourceId texture_id,
uint32 width, uint32 height, uint32 depth,
uint32 levels, texture::Format format,
bool enable_render_surfaces) {
cmd::CreateTexture3d& cmd = GetCmdSpace<cmd::CreateTexture3d>();
cmd.Init(texture_id,
width, height, depth,
levels, format,
enable_render_surfaces);
}
void CreateTextureCube(
ResourceId texture_id,
uint32 edge_length, uint32 levels, texture::Format format,
bool enable_render_surfaces) {
cmd::CreateTextureCube& cmd = GetCmdSpace<cmd::CreateTextureCube>();
cmd.Init(texture_id,
edge_length, levels, format,
enable_render_surfaces);
}
void SetTextureData(
ResourceId texture_id,
uint32 x,
uint32 y,
uint32 z,
uint32 width,
uint32 height,
uint32 depth,
uint32 level,
texture::Face face,
uint32 row_pitch,
uint32 slice_pitch,
uint32 size,
uint32 shared_memory_id,
uint32 shared_memory_offset) {
cmd::SetTextureData& cmd = GetCmdSpace<cmd::SetTextureData>();
cmd.Init(
texture_id,
x,
y,
z,
width,
height,
depth,
level,
face,
row_pitch,
slice_pitch,
size,
shared_memory_id,
shared_memory_offset);
}
void SetTextureDataImmediate(
ResourceId texture_id,
uint32 x,
uint32 y,
uint32 z,
uint32 width,
uint32 height,
uint32 depth,
uint32 level,
texture::Face face,
uint32 row_pitch,
uint32 slice_pitch,
uint32 size,
const void* data) {
cmd::SetTextureDataImmediate& cmd =
GetImmediateCmdSpace<cmd::SetTextureDataImmediate>(size);
cmd.Init(
texture_id,
x,
y,
z,
width,
height,
depth,
level,
face,
row_pitch,
slice_pitch,
size,
data);
}
void GetTextureData(
ResourceId texture_id,
uint32 x,
uint32 y,
uint32 z,
uint32 width,
uint32 height,
uint32 depth,
uint32 level,
texture::Face face,
uint32 row_pitch,
uint32 slice_pitch,
uint32 size,
uint32 shared_memory_id,
uint32 shared_memory_offset) {
cmd::GetTextureData& cmd = GetCmdSpace<cmd::GetTextureData>();
cmd.Init(
texture_id,
x,
y,
z,
width,
height,
depth,
level,
face,
row_pitch,
slice_pitch,
size,
shared_memory_id,
shared_memory_offset);
}
void CreateSampler(ResourceId sampler_id) {
cmd::CreateSampler& cmd = GetCmdSpace<cmd::CreateSampler>();
cmd.Init(sampler_id);
}
void DestroySampler(ResourceId sampler_id) {
cmd::DestroySampler& cmd = GetCmdSpace<cmd::DestroySampler>();
cmd.Init(sampler_id);
}
void SetSamplerStates(
ResourceId sampler_id,
sampler::AddressingMode address_u_value,
sampler::AddressingMode address_v_value,
sampler::AddressingMode address_w_value,
sampler::FilteringMode mag_filter_value,
sampler::FilteringMode min_filter_value,
sampler::FilteringMode mip_filter_value,
uint8 max_anisotropy) {
cmd::SetSamplerStates& cmd = GetCmdSpace<cmd::SetSamplerStates>();
cmd.Init(
sampler_id,
address_u_value,
address_v_value,
address_w_value,
mag_filter_value,
min_filter_value,
mip_filter_value,
max_anisotropy);
}
void SetSamplerBorderColor(
ResourceId sampler_id,
float red, float green, float blue, float alpha) {
cmd::SetSamplerBorderColor& cmd =
GetCmdSpace<cmd::SetSamplerBorderColor>();
cmd.Init(sampler_id, red, green, blue, alpha);
}
void SetSamplerTexture(ResourceId sampler_id, ResourceId texture_id) {
cmd::SetSamplerTexture& cmd = GetCmdSpace<cmd::SetSamplerTexture>();
cmd.Init(sampler_id, texture_id);
}
void SetScissor(
uint32 x,
uint32 y,
uint32 width,
uint32 height,
bool enable) {
cmd::SetScissor& cmd = GetCmdSpace<cmd::SetScissor>();
cmd.Init(
x,
y,
width,
height,
enable);
}
void SetPolygonOffset(float slope_factor, float units) {
cmd::SetPolygonOffset& cmd = GetCmdSpace<cmd::SetPolygonOffset>();
cmd.Init(slope_factor, units);
}
void SetPointLineRaster(
bool line_smooth_enable, bool point_sprite_enable, float point_size) {
cmd::SetPointLineRaster& cmd = GetCmdSpace<cmd::SetPointLineRaster>();
cmd.Init(line_smooth_enable, point_sprite_enable, point_size);
}
void SetPolygonRaster(PolygonMode fill_mode, FaceCullMode cull_mode) {
cmd::SetPolygonRaster& cmd = GetCmdSpace<cmd::SetPolygonRaster>();
cmd.Init(fill_mode, cull_mode);
}
void SetAlphaTest(Comparison func, bool enable, float value) {
cmd::SetAlphaTest& cmd = GetCmdSpace<cmd::SetAlphaTest>();
cmd.Init(func, enable, value);
}
void SetDepthTest(Comparison func, bool write_enable, bool enable) {
cmd::SetDepthTest& cmd = GetCmdSpace<cmd::SetDepthTest>();
cmd.Init(func, write_enable, enable);
}
void SetStencilTest(
uint8 write_mask,
uint8 compare_mask,
uint8 reference_value,
bool separate_ccw,
bool enable,
Comparison cw_func,
StencilOp cw_pass_op,
StencilOp cw_fail_op,
StencilOp cw_z_fail_op,
Comparison ccw_func,
StencilOp ccw_pass_op,
StencilOp ccw_fail_op,
StencilOp ccw_z_fail_op) {
cmd::SetStencilTest& cmd = GetCmdSpace<cmd::SetStencilTest>();
cmd.Init(
write_mask,
compare_mask,
reference_value,
separate_ccw,
enable,
cw_func,
cw_pass_op,
cw_fail_op,
cw_z_fail_op,
ccw_func,
ccw_pass_op,
ccw_fail_op,
ccw_z_fail_op);
}
void SetColorWrite(uint8 mask, bool dither_enable) {
cmd::SetColorWrite& cmd = GetCmdSpace<cmd::SetColorWrite>();
cmd.Init(mask, dither_enable);
}
void SetBlending(
BlendFunc color_src_func,
BlendFunc color_dst_func,
BlendEq color_eq,
BlendFunc alpha_src_func,
BlendFunc alpha_dst_func,
BlendEq alpha_eq,
bool separate_alpha,
bool enable) {
cmd::SetBlending& cmd = GetCmdSpace<cmd::SetBlending>();
cmd.Init(
color_src_func,
color_dst_func,
color_eq,
alpha_src_func,
alpha_dst_func,
alpha_eq,
separate_alpha,
enable);
}
void SetBlendingColor(float red, float green, float blue, float alpha) {
cmd::SetBlendingColor& cmd = GetCmdSpace<cmd::SetBlendingColor>();
cmd.Init(red, green, blue, alpha);
}
void CreateRenderSurface(
ResourceId render_surface_id, ResourceId texture_id,
uint32 width, uint32 height,
uint32 level, uint32 side) {
cmd::CreateRenderSurface& cmd = GetCmdSpace<cmd::CreateRenderSurface>();
cmd.Init(render_surface_id, texture_id, width, height, level, side);
}
void DestroyRenderSurface(ResourceId render_surface_id) {
cmd::DestroyRenderSurface& cmd =
GetCmdSpace<cmd::DestroyRenderSurface>();
cmd.Init(render_surface_id);
}
void CreateDepthSurface(
ResourceId depth_surface_id, uint32 width, uint32 height) {
cmd::CreateDepthSurface& cmd = GetCmdSpace<cmd::CreateDepthSurface>();
cmd.Init(depth_surface_id, width, height);
}
void DestroyDepthSurface(ResourceId depth_surface_id) {
cmd::DestroyDepthSurface& cmd = GetCmdSpace<cmd::DestroyDepthSurface>();
cmd.Init(depth_surface_id);
}
void SetRenderSurface(
ResourceId render_surface_id, ResourceId depth_surface_id) {
cmd::SetRenderSurface& cmd = GetCmdSpace<cmd::SetRenderSurface>();
cmd.Init(render_surface_id, depth_surface_id);
}
void SetBackSurfaces() {
cmd::SetBackSurfaces& cmd = GetCmdSpace<cmd::SetBackSurfaces>();
cmd.Init();
}
private:
// Waits until get changes, updating the value of get_.
void WaitForGetChange();
// Returns the number of available entries (they may not be contiguous).
unsigned int AvailableEntries() {
return static_cast<unsigned int>(
(get_ - put_ - 1 + entry_count_) % entry_count_);
}
BufferSyncInterface *interface_;
CommandBufferEntry *entries_;
unsigned int entry_count_;
unsigned int token_;
unsigned int last_token_read_;
RPCShmHandle shm_handle_;
unsigned int shm_id_;
CommandBufferOffset get_;
CommandBufferOffset put_;
friend class CommandBufferHelperTest;
};
} // namespace command_buffer
} // namespace o3d
#endif // O3D_COMMAND_BUFFER_CLIENT_CROSS_CMD_BUFFER_HELPER_H_
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