| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // This file defines the GLES2 command buffer commands. |
| |
| #ifndef GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_ |
| #define GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_ |
| |
| |
| #include <KHR/khrplatform.h> |
| |
| #include <stdint.h> |
| #include <string.h> |
| |
| #include "base/atomicops.h" |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "gpu/command_buffer/common/bitfield_helpers.h" |
| #include "gpu/command_buffer/common/cmd_buffer_common.h" |
| #include "gpu/command_buffer/common/gles2_cmd_ids.h" |
| |
| // GL types are forward declared to avoid including the GL headers. The problem |
| // is determining which GL headers to include from code that is common to the |
| // client and service sides (GLES2 or one of several GL implementations). |
| typedef unsigned int GLenum; |
| typedef unsigned int GLbitfield; |
| typedef unsigned int GLuint; |
| typedef int GLint; |
| typedef int GLsizei; |
| typedef unsigned char GLboolean; |
| typedef signed char GLbyte; |
| typedef short GLshort; |
| typedef unsigned char GLubyte; |
| typedef unsigned short GLushort; |
| typedef unsigned long GLulong; |
| typedef float GLfloat; |
| typedef float GLclampf; |
| typedef double GLdouble; |
| typedef double GLclampd; |
| typedef void GLvoid; |
| typedef khronos_intptr_t GLintptr; |
| typedef khronos_ssize_t GLsizeiptr; |
| |
| namespace gpu { |
| namespace gles2 { |
| |
| // Command buffer is GPU_COMMAND_BUFFER_ENTRY_ALIGNMENT byte aligned. |
| #pragma pack(push, GPU_COMMAND_BUFFER_ENTRY_ALIGNMENT) |
| |
| namespace id_namespaces { |
| |
| // These are used when contexts share resources. |
| enum IdNamespaces { |
| kBuffers, |
| kFramebuffers, |
| kProgramsAndShaders, |
| kRenderbuffers, |
| kTextures, |
| kQueries, |
| kVertexArrays, |
| kNumIdNamespaces |
| }; |
| |
| // These numbers must not change |
| COMPILE_ASSERT(kBuffers == 0, kBuffers_is_not_0); |
| COMPILE_ASSERT(kFramebuffers == 1, kFramebuffers_is_not_1); |
| COMPILE_ASSERT(kProgramsAndShaders == 2, kProgramsAndShaders_is_not_2); |
| COMPILE_ASSERT(kRenderbuffers == 3, kRenderbuffers_is_not_3); |
| COMPILE_ASSERT(kTextures == 4, kTextures_is_not_4); |
| |
| } // namespace id_namespaces |
| |
| // Used for some glGetXXX commands that return a result through a pointer. We |
| // need to know if the command succeeded or not and the size of the result. If |
| // the command failed its result size will 0. |
| template <typename T> |
| struct SizedResult { |
| typedef T Type; |
| |
| T* GetData() { |
| return static_cast<T*>(static_cast<void*>(&data)); |
| } |
| |
| // Returns the total size in bytes of the SizedResult for a given number of |
| // results including the size field. |
| static size_t ComputeSize(size_t num_results) { |
| return sizeof(T) * num_results + sizeof(uint32_t); // NOLINT |
| } |
| |
| // Returns the total size in bytes of the SizedResult for a given size of |
| // results. |
| static size_t ComputeSizeFromBytes(size_t size_of_result_in_bytes) { |
| return size_of_result_in_bytes + sizeof(uint32_t); // NOLINT |
| } |
| |
| // Returns the maximum number of results for a given buffer size. |
| static uint32_t ComputeMaxResults(size_t size_of_buffer) { |
| return (size_of_buffer >= sizeof(uint32_t)) ? |
| ((size_of_buffer - sizeof(uint32_t)) / sizeof(T)) : 0; // NOLINT |
| } |
| |
| // Set the size for a given number of results. |
| void SetNumResults(size_t num_results) { |
| size = sizeof(T) * num_results; // NOLINT |
| } |
| |
| // Get the number of elements in the result |
| int32_t GetNumResults() const { |
| return size / sizeof(T); // NOLINT |
| } |
| |
| // Copy the result. |
| void CopyResult(void* dst) const { |
| memcpy(dst, &data, size); |
| } |
| |
| uint32_t size; // in bytes. |
| int32_t data; // this is just here to get an offset. |
| }; |
| |
| COMPILE_ASSERT(sizeof(SizedResult<int8_t>) == 8, SizedResult_size_not_8); |
| COMPILE_ASSERT(offsetof(SizedResult<int8_t>, size) == 0, |
| OffsetOf_SizedResult_size_not_0); |
| COMPILE_ASSERT(offsetof(SizedResult<int8_t>, data) == 4, |
| OffsetOf_SizedResult_data_not_4); |
| |
| // The data for one attrib or uniform from GetProgramInfoCHROMIUM. |
| struct ProgramInput { |
| uint32_t type; // The type (GL_VEC3, GL_MAT3, GL_SAMPLER_2D, etc. |
| int32_t size; // The size (how big the array is for uniforms) |
| uint32_t location_offset; // offset from ProgramInfoHeader to 'size' |
| // locations for uniforms, 1 for attribs. |
| uint32_t name_offset; // offset from ProgrmaInfoHeader to start of name. |
| uint32_t name_length; // length of the name. |
| }; |
| |
| // The format of the bucket filled out by GetProgramInfoCHROMIUM |
| struct ProgramInfoHeader { |
| uint32_t link_status; |
| uint32_t num_attribs; |
| uint32_t num_uniforms; |
| // ProgramInput inputs[num_attribs + num_uniforms]; |
| }; |
| |
| // The format of QuerySync used by EXT_occlusion_query_boolean |
| struct QuerySync { |
| void Reset() { |
| process_count = 0; |
| result = 0; |
| } |
| |
| base::subtle::Atomic32 process_count; |
| uint64_t result; |
| }; |
| |
| struct AsyncUploadSync { |
| void Reset() { |
| base::subtle::Release_Store(&async_upload_token, 0); |
| } |
| |
| void SetAsyncUploadToken(uint32_t token) { |
| DCHECK_NE(token, 0u); |
| base::subtle::Release_Store(&async_upload_token, token); |
| } |
| |
| bool HasAsyncUploadTokenPassed(uint32_t token) { |
| DCHECK_NE(token, 0u); |
| uint32_t current_token = base::subtle::Acquire_Load(&async_upload_token); |
| return (current_token - token < 0x80000000); |
| } |
| |
| base::subtle::Atomic32 async_upload_token; |
| }; |
| |
| COMPILE_ASSERT(sizeof(ProgramInput) == 20, ProgramInput_size_not_20); |
| COMPILE_ASSERT(offsetof(ProgramInput, type) == 0, |
| OffsetOf_ProgramInput_type_not_0); |
| COMPILE_ASSERT(offsetof(ProgramInput, size) == 4, |
| OffsetOf_ProgramInput_size_not_4); |
| COMPILE_ASSERT(offsetof(ProgramInput, location_offset) == 8, |
| OffsetOf_ProgramInput_location_offset_not_8); |
| COMPILE_ASSERT(offsetof(ProgramInput, name_offset) == 12, |
| OffsetOf_ProgramInput_name_offset_not_12); |
| COMPILE_ASSERT(offsetof(ProgramInput, name_length) == 16, |
| OffsetOf_ProgramInput_name_length_not_16); |
| |
| COMPILE_ASSERT(sizeof(ProgramInfoHeader) == 12, ProgramInfoHeader_size_not_12); |
| COMPILE_ASSERT(offsetof(ProgramInfoHeader, link_status) == 0, |
| OffsetOf_ProgramInfoHeader_link_status_not_0); |
| COMPILE_ASSERT(offsetof(ProgramInfoHeader, num_attribs) == 4, |
| OffsetOf_ProgramInfoHeader_num_attribs_not_4); |
| COMPILE_ASSERT(offsetof(ProgramInfoHeader, num_uniforms) == 8, |
| OffsetOf_ProgramInfoHeader_num_uniforms_not_8); |
| |
| namespace cmds { |
| |
| #include "../common/gles2_cmd_format_autogen.h" |
| |
| // These are hand written commands. |
| // TODO(gman): Attempt to make these auto-generated. |
| |
| struct GenMailboxCHROMIUM { |
| typedef GenMailboxCHROMIUM ValueType; |
| static const CommandId kCmdId = kGenMailboxCHROMIUM; |
| static const cmd::ArgFlags kArgFlags = cmd::kFixed; |
| static const uint8 cmd_flags = CMD_FLAG_SET_TRACE_LEVEL(3); |
| CommandHeader header; |
| }; |
| |
| struct InsertSyncPointCHROMIUM { |
| typedef InsertSyncPointCHROMIUM ValueType; |
| static const CommandId kCmdId = kInsertSyncPointCHROMIUM; |
| static const cmd::ArgFlags kArgFlags = cmd::kFixed; |
| static const uint8 cmd_flags = CMD_FLAG_SET_TRACE_LEVEL(3); |
| CommandHeader header; |
| }; |
| |
| struct CreateAndConsumeTextureCHROMIUMImmediate { |
| typedef CreateAndConsumeTextureCHROMIUMImmediate ValueType; |
| static const CommandId kCmdId = kCreateAndConsumeTextureCHROMIUMImmediate; |
| static const cmd::ArgFlags kArgFlags = cmd::kAtLeastN; |
| static const uint8 cmd_flags = CMD_FLAG_SET_TRACE_LEVEL(1); |
| |
| static uint32_t ComputeDataSize() { |
| return static_cast<uint32_t>(sizeof(GLbyte) * 64); // NOLINT |
| } |
| |
| static uint32_t ComputeSize() { |
| return static_cast<uint32_t>(sizeof(ValueType) + |
| ComputeDataSize()); // NOLINT |
| } |
| |
| void SetHeader(uint32_t size_in_bytes) { |
| header.SetCmdByTotalSize<ValueType>(size_in_bytes); |
| } |
| |
| void Init(GLenum _target, uint32_t _client_id, const GLbyte* _mailbox) { |
| SetHeader(ComputeSize()); |
| target = _target; |
| client_id = _client_id; |
| memcpy(ImmediateDataAddress(this), _mailbox, ComputeDataSize()); |
| } |
| |
| void* Set(void* cmd, |
| GLenum _target, |
| uint32_t _client_id, |
| const GLbyte* _mailbox) { |
| static_cast<ValueType*>(cmd)->Init(_target, _client_id, _mailbox); |
| const uint32_t size = ComputeSize(); |
| return NextImmediateCmdAddressTotalSize<ValueType>(cmd, size); |
| } |
| |
| gpu::CommandHeader header; |
| uint32_t target; |
| uint32_t client_id; |
| }; |
| |
| COMPILE_ASSERT(sizeof(CreateAndConsumeTextureCHROMIUMImmediate) == 12, |
| Sizeof_CreateAndConsumeTextureCHROMIUMImmediate_is_not_12); |
| COMPILE_ASSERT(offsetof(CreateAndConsumeTextureCHROMIUMImmediate, header) == 0, |
| OffsetOf_CreateAndConsumeTextureCHROMIUMImmediate_header_not_0); |
| COMPILE_ASSERT(offsetof(CreateAndConsumeTextureCHROMIUMImmediate, target) == 4, |
| OffsetOf_CreateAndConsumeTextureCHROMIUMImmediate_target_not_4); |
| COMPILE_ASSERT( |
| offsetof(CreateAndConsumeTextureCHROMIUMImmediate, client_id) == 8, |
| OffsetOf_CreateAndConsumeTextureCHROMIUMImmediate_client_id_not_8); |
| |
| |
| #pragma pack(pop) |
| |
| } // namespace cmd |
| } // namespace gles2 |
| } // namespace gpu |
| |
| #endif // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_ |