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/*
* Copyright 2011-2012 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#ifndef __BGFX_H__
#define __BGFX_H__
#include <stdint.h> // uint32_t
#include <stdlib.h> // size_t
///
#define BGFX_STATE_DEPTH_WRITE UINT64_C(0x0000000000000001)
#define BGFX_STATE_ALPHA_TEST UINT64_C(0x0000000000000004)
#define BGFX_STATE_ALPHA_WRITE UINT64_C(0x0000000000000008)
#define BGFX_STATE_ALPHA_MASK UINT64_C(0x000000000000000c)
#define BGFX_STATE_DEPTH_TEST_LESS UINT64_C(0x0000000000000010)
#define BGFX_STATE_DEPTH_TEST_LEQUAL UINT64_C(0x0000000000000020)
#define BGFX_STATE_DEPTH_TEST_EQUAL UINT64_C(0x0000000000000030)
#define BGFX_STATE_DEPTH_TEST_GEQUAL UINT64_C(0x0000000000000040)
#define BGFX_STATE_DEPTH_TEST_GREATER UINT64_C(0x0000000000000050)
#define BGFX_STATE_DEPTH_TEST_NOTEQUAL UINT64_C(0x0000000000000060)
#define BGFX_STATE_DEPTH_TEST_NEVER UINT64_C(0x0000000000000070)
#define BGFX_STATE_DEPTH_TEST_ALWAYS UINT64_C(0x0000000000000080)
#define BGFX_STATE_DEPTH_TEST_SHIFT 4
#define BGFX_STATE_DEPTH_TEST_MASK UINT64_C(0x00000000000000f0)
#define BGFX_STATE_ALPHA_TEST_LESS UINT64_C(0x0000000000000100)
#define BGFX_STATE_ALPHA_TEST_LEQUAL UINT64_C(0x0000000000000200)
#define BGFX_STATE_ALPHA_TEST_EQUAL UINT64_C(0x0000000000000300)
#define BGFX_STATE_ALPHA_TEST_GEQUAL UINT64_C(0x0000000000000400)
#define BGFX_STATE_ALPHA_TEST_GREATER UINT64_C(0x0000000000000500)
#define BGFX_STATE_ALPHA_TEST_NOTEQUAL UINT64_C(0x0000000000000600)
#define BGFX_STATE_ALPHA_TEST_NEVER UINT64_C(0x0000000000000700)
#define BGFX_STATE_ALPHA_TEST_ALWAYS UINT64_C(0x0000000000000800)
#define BGFX_STATE_ALPHA_TEST_SHIFT 8
#define BGFX_STATE_ALPHA_TEST_MASK UINT64_C(0x0000000000000f00)
#define BGFX_STATE_BLEND_ZERO UINT64_C(0x0000000000001000)
#define BGFX_STATE_BLEND_ONE UINT64_C(0x0000000000002000)
#define BGFX_STATE_BLEND_SRC_COLOR UINT64_C(0x0000000000003000)
#define BGFX_STATE_BLEND_INV_SRC_COLOR UINT64_C(0x0000000000004000)
#define BGFX_STATE_BLEND_SRC_ALPHA UINT64_C(0x0000000000005000)
#define BGFX_STATE_BLEND_INV_SRC_ALPHA UINT64_C(0x0000000000006000)
#define BGFX_STATE_BLEND_DST_ALPHA UINT64_C(0x0000000000007000)
#define BGFX_STATE_BLEND_INV_DST_ALPHA UINT64_C(0x0000000000008000)
#define BGFX_STATE_BLEND_DST_COLOR UINT64_C(0x0000000000009000)
#define BGFX_STATE_BLEND_INV_DST_COLOR UINT64_C(0x000000000000a000)
#define BGFX_STATE_BLEND_SRC_ALPHA_SAT UINT64_C(0x000000000000b000)
#define BGFX_STATE_BLEND_SHIFT 12
#define BGFX_STATE_BLEND_MASK UINT64_C(0x000000000ffff000)
#define BGFX_STATE_CULL_CW UINT64_C(0x0000000010000000)
#define BGFX_STATE_CULL_CCW UINT64_C(0x0000000020000000)
#define BGFX_STATE_CULL_SHIFT 28
#define BGFX_STATE_CULL_MASK UINT64_C(0x0000000030000000)
#define BGFX_STATE_RGB_WRITE UINT64_C(0x0000000040000000)
#define BGFX_STATE_ALPHA_REF_SHIFT 32
#define BGFX_STATE_ALPHA_REF_MASK UINT64_C(0x000000ff00000000)
#define BGFX_STATE_PT_LINES UINT64_C(0x0000010000000000)
#define BGFX_STATE_PT_POINTS UINT64_C(0x0000020000000000)
#define BGFX_STATE_PT_SHIFT 40
#define BGFX_STATE_PT_MASK UINT64_C(0x0000030000000000)
#define BGFX_STATE_POINT_SIZE_SHIFT 44
#define BGFX_STATE_POINT_SIZE_MASK UINT64_C(0x000ff00000000000)
#define BGFX_STATE_SRGBWRITE UINT64_C(0x0010000000000000)
#define BGFX_STATE_MSAA UINT64_C(0x0020000000000000)
#define BGFX_STATE_RESERVED UINT64_C(0xff00000000000000)
#define BGFX_STATE_NONE UINT64_C(0x0000000000000000)
#define BGFX_STATE_MASK UINT64_C(0xffffffffffffffff)
#define BGFX_STATE_DEFAULT (0 \
| BGFX_STATE_RGB_WRITE \
| BGFX_STATE_ALPHA_WRITE \
| BGFX_STATE_DEPTH_TEST_LESS \
| BGFX_STATE_DEPTH_WRITE \
| BGFX_STATE_CULL_CW \
| BGFX_STATE_MSAA \
)
#define BGFX_STATE_ALPHA_REF(_ref) ( (uint64_t(_ref)<<BGFX_STATE_ALPHA_REF_SHIFT)&BGFX_STATE_ALPHA_REF_MASK)
#define BGFX_STATE_POINT_SIZE(_size) ( (uint64_t(_size)<<BGFX_STATE_POINT_SIZE_SHIFT)&BGFX_STATE_POINT_SIZE_MASK)
///
#define BGFX_STENCIL_FUNC_REF_SHIFT 0
#define BGFX_STENCIL_FUNC_REF_MASK UINT32_C(0x000000ff)
#define BGFX_STENCIL_FUNC_RMASK_SHIFT 8
#define BGFX_STENCIL_FUNC_RMASK_MASK UINT32_C(0x0000ff00)
#define BGFX_STENCIL_TEST_LESS UINT32_C(0x00010000)
#define BGFX_STENCIL_TEST_LEQUAL UINT32_C(0x00020000)
#define BGFX_STENCIL_TEST_EQUAL UINT32_C(0x00030000)
#define BGFX_STENCIL_TEST_GEQUAL UINT32_C(0x00040000)
#define BGFX_STENCIL_TEST_GREATER UINT32_C(0x00050000)
#define BGFX_STENCIL_TEST_NOTEQUAL UINT32_C(0x00060000)
#define BGFX_STENCIL_TEST_NEVER UINT32_C(0x00070000)
#define BGFX_STENCIL_TEST_ALWAYS UINT32_C(0x00080000)
#define BGFX_STENCIL_TEST_SHIFT 16
#define BGFX_STENCIL_TEST_MASK UINT32_C(0x000f0000)
#define BGFX_STENCIL_OP_FAIL_S_ZERO UINT32_C(0x00000000)
#define BGFX_STENCIL_OP_FAIL_S_KEEP UINT32_C(0x00100000)
#define BGFX_STENCIL_OP_FAIL_S_REPLACE UINT32_C(0x00200000)
#define BGFX_STENCIL_OP_FAIL_S_INCR UINT32_C(0x00300000)
#define BGFX_STENCIL_OP_FAIL_S_INCRSAT UINT32_C(0x00400000)
#define BGFX_STENCIL_OP_FAIL_S_DECR UINT32_C(0x00500000)
#define BGFX_STENCIL_OP_FAIL_S_DECRSAT UINT32_C(0x00600000)
#define BGFX_STENCIL_OP_FAIL_S_INVERT UINT32_C(0x00700000)
#define BGFX_STENCIL_OP_FAIL_S_SHIFT 20
#define BGFX_STENCIL_OP_FAIL_S_MASK UINT32_C(0x00f00000)
#define BGFX_STENCIL_OP_FAIL_Z_ZERO UINT32_C(0x00000000)
#define BGFX_STENCIL_OP_FAIL_Z_KEEP UINT32_C(0x01000000)
#define BGFX_STENCIL_OP_FAIL_Z_REPLACE UINT32_C(0x02000000)
#define BGFX_STENCIL_OP_FAIL_Z_INCR UINT32_C(0x03000000)
#define BGFX_STENCIL_OP_FAIL_Z_INCRSAT UINT32_C(0x04000000)
#define BGFX_STENCIL_OP_FAIL_Z_DECR UINT32_C(0x05000000)
#define BGFX_STENCIL_OP_FAIL_Z_DECRSAT UINT32_C(0x06000000)
#define BGFX_STENCIL_OP_FAIL_Z_INVERT UINT32_C(0x07000000)
#define BGFX_STENCIL_OP_FAIL_Z_SHIFT 24
#define BGFX_STENCIL_OP_FAIL_Z_MASK UINT32_C(0x0f000000)
#define BGFX_STENCIL_OP_PASS_Z_ZERO UINT32_C(0x00000000)
#define BGFX_STENCIL_OP_PASS_Z_KEEP UINT32_C(0x10000000)
#define BGFX_STENCIL_OP_PASS_Z_REPLACE UINT32_C(0x20000000)
#define BGFX_STENCIL_OP_PASS_Z_INCR UINT32_C(0x30000000)
#define BGFX_STENCIL_OP_PASS_Z_INCRSAT UINT32_C(0x40000000)
#define BGFX_STENCIL_OP_PASS_Z_DECR UINT32_C(0x50000000)
#define BGFX_STENCIL_OP_PASS_Z_DECRSAT UINT32_C(0x60000000)
#define BGFX_STENCIL_OP_PASS_Z_INVERT UINT32_C(0x70000000)
#define BGFX_STENCIL_OP_PASS_Z_SHIFT 28
#define BGFX_STENCIL_OP_PASS_Z_MASK UINT32_C(0xf0000000)
#define BGFX_STENCIL_NONE UINT32_C(0x00000000)
#define BGFX_STENCIL_MASK UINT32_C(0xffffffff)
#define BGFX_STENCIL_DEFAULT UINT32_C(0x00000000)
#define BGFX_STENCIL_FUNC_REF(_ref) ( (uint32_t(_ref)<<BGFX_STENCIL_FUNC_REF_SHIFT)&BGFX_STENCIL_FUNC_REF_MASK)
#define BGFX_STENCIL_FUNC_RMASK(_mask) ( (uint32_t(_mask)<<BGFX_STENCIL_FUNC_RMASK_SHIFT)&BGFX_STENCIL_FUNC_RMASK_MASK)
///
#define BGFX_CLEAR_NONE UINT8_C(0x00)
#define BGFX_CLEAR_COLOR_BIT UINT8_C(0x01)
#define BGFX_CLEAR_DEPTH_BIT UINT8_C(0x02)
#define BGFX_CLEAR_STENCIL_BIT UINT8_C(0x04)
///
#define BGFX_DEBUG_NONE UINT32_C(0x00000000)
#define BGFX_DEBUG_WIREFRAME UINT32_C(0x00000001)
#define BGFX_DEBUG_IFH UINT32_C(0x00000002)
#define BGFX_DEBUG_STATS UINT32_C(0x00000004)
#define BGFX_DEBUG_TEXT UINT32_C(0x00000008)
///
#define BGFX_TEXTURE_NONE UINT32_C(0x00000000)
#define BGFX_TEXTURE_U_REPEAT UINT32_C(0x00000000)
#define BGFX_TEXTURE_U_MIRROR UINT32_C(0x00000001)
#define BGFX_TEXTURE_U_CLAMP UINT32_C(0x00000002)
#define BGFX_TEXTURE_U_SHIFT 0
#define BGFX_TEXTURE_U_MASK UINT32_C(0x00000003)
#define BGFX_TEXTURE_V_REPEAT UINT32_C(0x00000000)
#define BGFX_TEXTURE_V_MIRROR UINT32_C(0x00000010)
#define BGFX_TEXTURE_V_CLAMP UINT32_C(0x00000020)
#define BGFX_TEXTURE_V_SHIFT 4
#define BGFX_TEXTURE_V_MASK UINT32_C(0x00000030)
#define BGFX_TEXTURE_W_REPEAT UINT32_C(0x00000000)
#define BGFX_TEXTURE_W_MIRROR UINT32_C(0x00000100)
#define BGFX_TEXTURE_W_CLAMP UINT32_C(0x00000200)
#define BGFX_TEXTURE_W_SHIFT 8
#define BGFX_TEXTURE_W_MASK UINT32_C(0x00000300)
#define BGFX_TEXTURE_MIN_POINT UINT32_C(0x00001000)
#define BGFX_TEXTURE_MIN_ANISOTROPIC UINT32_C(0x00002000)
#define BGFX_TEXTURE_MIN_SHIFT 12
#define BGFX_TEXTURE_MIN_MASK UINT32_C(0x00003000)
#define BGFX_TEXTURE_MAG_POINT UINT32_C(0x00010000)
#define BGFX_TEXTURE_MAG_ANISOTROPIC UINT32_C(0x00020000)
#define BGFX_TEXTURE_MAG_SHIFT 16
#define BGFX_TEXTURE_MAG_MASK UINT32_C(0x00030000)
#define BGFX_TEXTURE_MIP_POINT UINT32_C(0x00100000)
#define BGFX_TEXTURE_MIP_SHIFT 20
#define BGFX_TEXTURE_MIP_MASK UINT32_C(0x00100000)
#define BGFX_TEXTURE_SRGB UINT32_C(0x00200000)
///
#define BGFX_RENDER_TARGET_NONE UINT32_C(0x00000000)
#define BGFX_RENDER_TARGET_COLOR_RGBA UINT32_C(0x00000001)
#define BGFX_RENDER_TARGET_COLOR_R32F UINT32_C(0x00000002)
#define BGFX_RENDER_TARGET_COLOR_SHIFT 0
#define BGFX_RENDER_TARGET_COLOR_MASK UINT32_C(0x000000ff)
#define BGFX_RENDER_TARGET_DEPTH UINT32_C(0x00000100)
#define BGFX_RENDER_TARGET_DEPTH_SHIFT 8
#define BGFX_RENDER_TARGET_DEPTH_MASK UINT32_C(0x0000ff00)
#define BGFX_RENDER_TARGET_MSAA_X2 UINT32_C(0x00010000)
#define BGFX_RENDER_TARGET_MSAA_X4 UINT32_C(0x00020000)
#define BGFX_RENDER_TARGET_MSAA_X8 UINT32_C(0x00030000)
#define BGFX_RENDER_TARGET_MSAA_X16 UINT32_C(0x00040000)
#define BGFX_RENDER_TARGET_MSAA_SHIFT 16
#define BGFX_RENDER_TARGET_MSAA_MASK UINT32_C(0x00070000)
#define BGFX_RENDER_TARGET_SRGBWRITE UINT32_C(0x00080000)
///
#define BGFX_RESET_NONE UINT32_C(0x00000000)
#define BGFX_RESET_FULLSCREEN UINT32_C(0x00000001)
#define BGFX_RESET_FULLSCREEN_FAKE UINT32_C(0x00000002)
#define BGFX_RESET_FULLSCREEN_SHIFT 0
#define BGFX_RESET_FULLSCREEN_MASK UINT32_C(0x00000003)
#define BGFX_RESET_MSAA_X2 UINT32_C(0x00000010)
#define BGFX_RESET_MSAA_X4 UINT32_C(0x00000020)
#define BGFX_RESET_MSAA_X8 UINT32_C(0x00000030)
#define BGFX_RESET_MSAA_X16 UINT32_C(0x00000040)
#define BGFX_RESET_MSAA_SHIFT 4
#define BGFX_RESET_MSAA_MASK UINT32_C(0x00000070)
#define BGFX_RESET_VSYNC UINT32_C(0x00000080)
///
#define BGFX_HANDLE(_name) struct _name { uint16_t idx; }
#define BGFX_INVALID_HANDLE { bgfx::invalidHandle }
/// BGFX
namespace bgfx
{
struct Fatal
{
enum Enum
{
MinimumRequiredSpecs = 1,
InvalidShader,
UnableToInitialize,
UnableToCreateRenderTarget,
UnableToCreateTexture,
};
};
struct RendererType
{
enum Enum
{
Null,
Direct3D9,
Direct3D11,
OpenGLES2,
OpenGLES3,
OpenGL,
Count
};
};
struct Attrib
{
enum Enum
{
Position,
Normal,
Tangent,
Color0,
Color1,
Indices,
Weight,
TexCoord0,
TexCoord1,
TexCoord2,
TexCoord3,
TexCoord4,
TexCoord5,
TexCoord6,
TexCoord7,
Count
};
};
struct AttribType
{
enum Enum
{
Uint8,
Uint16,
Half,
Float,
Count
};
};
struct TextureFormat
{
enum Enum
{
Dxt1,
Dxt3,
Dxt5,
Unknown,
L8,
XRGB8,
ARGB8,
ABGR16,
R5G6B5,
RGBA4,
RGB5A1,
RGB10A2,
Count
};
};
struct UniformType
{
enum Enum
{
Uniform1i,
Uniform1f,
End,
Uniform1iv,
Uniform1fv,
Uniform2fv,
Uniform3fv,
Uniform4fv,
Uniform3x3fv,
Uniform4x4fv,
Count
};
};
static const uint16_t invalidHandle = UINT16_MAX;
BGFX_HANDLE(DynamicIndexBufferHandle);
BGFX_HANDLE(DynamicVertexBufferHandle);
BGFX_HANDLE(FragmentShaderHandle);
BGFX_HANDLE(IndexBufferHandle);
BGFX_HANDLE(ProgramHandle);
BGFX_HANDLE(RenderTargetHandle);
BGFX_HANDLE(TextureHandle);
BGFX_HANDLE(UniformHandle);
BGFX_HANDLE(VertexBufferHandle);
BGFX_HANDLE(VertexDeclHandle);
BGFX_HANDLE(VertexShaderHandle);
typedef void (*FatalFn)(Fatal::Enum _code, const char* _str);
typedef void* (*ReallocFn)(void* _ptr, size_t _size);
typedef void (*FreeFn)(void* _ptr);
typedef void (*CacheFn)(uint64_t _id, bool _store, void* _data, uint32_t& _length);
struct Memory
{
uint8_t* data;
uint32_t size;
};
struct TransientIndexBuffer
{
uint8_t* data;
uint32_t size;
IndexBufferHandle handle;
uint32_t startIndex;
};
struct TransientVertexBuffer
{
uint8_t* data;
uint32_t size;
uint32_t startVertex;
uint16_t stride;
VertexBufferHandle handle;
VertexDeclHandle decl;
};
struct InstanceDataBuffer
{
uint8_t* data;
uint32_t size;
uint32_t offset;
uint16_t stride;
uint16_t num;
VertexBufferHandle handle;
};
struct TextureInfo
{
TextureFormat::Enum format;
uint16_t width;
uint16_t height;
uint16_t depth;
};
struct VertexDecl
{
/// Start VertexDecl.
void begin(RendererType::Enum _renderer = RendererType::Null);
/// End VertexDecl.
void end();
/// Add attribute to VertexDecl. Note: Must be called between begin/end.
void add(Attrib::Enum _attrib, uint8_t _num, AttribType::Enum _type, bool _normalized = false);
/// Decode attribute.
void decode(Attrib::Enum _attrib, uint8_t& _num, AttribType::Enum& _type, bool& _normalized) const;
/// Returns true if VertexDecl contains attribute.
bool has(Attrib::Enum _attrib) const { return 0xff != m_attributes[_attrib]; }
/// Returns relative attribute offset from the vertex.
uint16_t getOffset(Attrib::Enum _attrib) const { return m_offset[_attrib]; }
/// Returns vertex stride.
uint16_t getStride() const { return m_stride; }
/// Returns size of vertex buffer for number of vertices.
uint32_t getSize(uint32_t _num) const { return _num*m_stride; }
uint32_t m_hash;
uint16_t m_stride;
uint16_t m_offset[Attrib::Count];
uint8_t m_attributes[Attrib::Count];
};
/// Returns renderer backend API type.
RendererType::Enum getRendererType();
/// Initialize bgfx library.
void init(FatalFn _fatal = NULL, ReallocFn _realloc = NULL, FreeFn _free = NULL, CacheFn _cache = NULL);
/// Shutdown bgfx library.
void shutdown();
/// Reset graphic settings.
void reset(uint32_t _width, uint32_t _height, uint32_t _flags = BGFX_RESET_NONE);
/// Advance to next frame. When using multithreaded renderer, this call
/// just swaps internal buffers, kicks render thread, and returns. In
/// singlethreaded renderer this call does frame rendering.
void frame();
/// Allocate buffer to pass to bgfx calls. Data will be freed inside bgfx.
const Memory* alloc(uint32_t _size);
/// Make reference to data to pass to bgfx. Unlike bgfx::alloc this call
/// doesn't allocate memory for data. It just copies pointer to data.
/// You must make sure data is available for at least 2 bgfx::frame calls.
const Memory* makeRef(const void* _data, uint32_t _size);
/// Set debug flags.
///
/// @param _debug Available flags:
///
/// BGFX_DEBUG_IFH - Infinitely fast hardware. When this flag is set
/// all rendering calls will be skipped. It's useful when profiling
/// to quickly assess bottleneck between CPU and GPU.
///
/// BGFX_DEBUG_STATS - Display internal statistics.
///
/// BGFX_DEBUG_TEXT - Display debug text.
///
/// BGFX_DEBUG_WIREFRAME - Wireframe rendering. All rendering
/// primitives will be rendered as lines.
///
void setDebug(uint32_t _debug);
/// Clear internal debug text buffer.
void dbgTextClear(uint8_t _attr = 0, bool _small = false);
/// Print into internal debug text buffer.
void dbgTextPrintf(uint16_t _x, uint16_t _y, uint8_t _attr, const char* _format, ...);
/// Create static index buffer.
IndexBufferHandle createIndexBuffer(const Memory* _mem);
/// Destroy static index buffer.
void destroyIndexBuffer(IndexBufferHandle _handle);
/// Create static vertex buffer.
VertexBufferHandle createVertexBuffer(const Memory* _mem, const VertexDecl& _decl);
/// Destroy static vertex buffer.
void destroyVertexBuffer(VertexBufferHandle _handle);
/// Create empty dynamic index buffer.
DynamicIndexBufferHandle createDynamicIndexBuffer(uint16_t _num);
/// Create dynamic index buffer and initialized it.
DynamicIndexBufferHandle createDynamicIndexBuffer(const Memory* _mem);
/// Update dynamic index buffer.
void updateDynamicIndexBuffer(DynamicIndexBufferHandle _handle, const Memory* _mem);
/// Destroy dynamic index buffer.
void destroyDynamicIndexBuffer(DynamicIndexBufferHandle _handle);
/// Create empty dynamic vertex buffer.
DynamicVertexBufferHandle createDynamicVertexBuffer(uint16_t _num, const VertexDecl& _decl);
/// Create dynamic vertex buffer and initialize it.
DynamicVertexBufferHandle createDynamicVertexBuffer(const Memory* _mem, const VertexDecl& _decl);
/// Update dynamic vertex buffer.
void updateDynamicVertexBuffer(DynamicVertexBufferHandle _handle, const Memory* _mem);
/// Destory dynamic vertex buffer.
void destroyDynamicVertexBuffer(DynamicVertexBufferHandle _handle);
/// Returns true if internal transient index buffer has enough space.
bool checkAvailTransientIndexBuffer(uint16_t _num);
/// Allocate transient index buffer.
///
/// @param[out] _tib is valid for the duration of frame, and it can be reused for
/// multiple draw calls.
/// @param _num number of indices to allocate.
void allocTransientIndexBuffer(TransientIndexBuffer* _tib, uint16_t _num);
/// Returns true if internal transient vertex buffer has enough space.
bool checkAvailTransientVertexBuffer(uint16_t _num, const VertexDecl& _decl);
/// Allocate transient vertex buffer.
///
/// @param[out] _tvb is valid for the duration of frame, and it can be reused for
/// multiple draw calls.
/// @param _num number of vertices to allocate.
/// @param _decl vertex declaration.
void allocTransientVertexBuffer(TransientVertexBuffer* _tvb, uint16_t _num, const VertexDecl& _decl);
/// Allocate instance data buffer.
const InstanceDataBuffer* allocInstanceDataBuffer(uint16_t _num, uint16_t _stride);
/// Create vertex shader from memory buffer.
VertexShaderHandle createVertexShader(const Memory* _mem);
/// Destroy vertex shader. Once program is created with vertex shader
/// it is safe to destroy vertex shader.
void destroyVertexShader(VertexShaderHandle _handle);
/// Create fragment shader from memory buffer.
FragmentShaderHandle createFragmentShader(const Memory* _mem);
/// Destroy fragment shader. Once program is created with fragment shader
/// it is safe to destroy fragment shader.
void destroyFragmentShader(FragmentShaderHandle _handle);
/// Create program with vertex and fragment shaders.
///
/// @param _vsh vertex shader.
/// @param _fsh fragment shader.
/// @returns Program handle if vertex shader output and fragment shader
/// input are matching, otherwise returns invalid program handle.
ProgramHandle createProgram(VertexShaderHandle _vsh, FragmentShaderHandle _fsh);
/// Destroy program.
void destroyProgram(ProgramHandle _handle);
/// Create texture from memory buffer.
TextureHandle createTexture(const Memory* _mem, uint32_t _flags = BGFX_TEXTURE_NONE, TextureInfo* _info = NULL);
/// Create 2D texture.
TextureHandle createTexture2D(uint16_t _width, uint16_t _height, uint8_t _numMips, TextureFormat::Enum _format, uint32_t _flags = BGFX_TEXTURE_NONE, const Memory* _mem = NULL);
/// Create 3D texture.
TextureHandle createTexture3D(uint16_t _width, uint16_t _height, uint16_t _depth, uint8_t _numMips, TextureFormat::Enum _format, uint32_t _flags = BGFX_TEXTURE_NONE, const Memory* _mem = NULL);
/// Create Cube texture.
TextureHandle createTextureCube(uint16_t _sides, uint16_t _width, uint8_t _numMips, TextureFormat::Enum _format, uint32_t _flags = BGFX_TEXTURE_NONE, const Memory* _mem = NULL);
/// Update 2D texture.
void updateTexture2D(TextureHandle _handle, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const Memory* _mem);
/// Update 3D texture.
void updateTexture3D(TextureHandle _handle, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _z, uint16_t _width, uint16_t _height, uint16_t _depth, const Memory* _mem);
/// Update Cube texture.
void updateTextureCube(TextureHandle _handle, uint8_t _side, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const Memory* _mem);
/// Destroy texture.
void destroyTexture(TextureHandle _handle);
/// Create render target.
RenderTargetHandle createRenderTarget(uint16_t _width, uint16_t _height, uint32_t _flags = BGFX_RENDER_TARGET_COLOR_RGBA, uint32_t _textureFlags = BGFX_TEXTURE_U_CLAMP|BGFX_TEXTURE_V_CLAMP);
/// Destroy render target.
void destroyRenderTarget(RenderTargetHandle _handle);
/// Create shader uniform parameter.
UniformHandle createUniform(const char* _name, UniformType::Enum _type, uint16_t _num = 1);
/// Destroy shader uniform parameter.
void destroyUniform(UniformHandle _handle);
/// Set view rectangle. Draw primitive outside view will be clipped.
void setViewRect(uint8_t _id, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height);
/// Set view rectangle for multiple views .
void setViewRectMask(uint32_t _viewMask, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height);
/// Set view clear flags.
///
/// @param _id view id.
/// @param _flags clear flags.
/// See: BGFX_CLEAR_*
///
/// @param _rgba color clear value.
/// @param _depth depth clear value.
/// @param _stencil stencil clear value.
void setViewClear(uint8_t _id, uint8_t _flags, uint32_t _rgba = 0x000000ff, float _depth = 1.0f, uint8_t _stencil = 0);
/// Set view clear flags for multiple views.
void setViewClearMask(uint32_t _viewMask, uint8_t _flags, uint32_t _rgba = 0x000000ff, float _depth = 1.0f, uint8_t _stencil = 0);
/// Set view into sequential mode. Draw calls will be sorted in the same
/// order in which submit calls were called.
void setViewSeq(uint8_t _id, bool _enabled);
/// Set mulitple views into sequential mode.
void setViewSeqMask(uint32_t _viewMask, bool _enabled);
/// Set view render target. View without render target draws primitives
/// into default backbuffer.
void setViewRenderTarget(uint8_t _id, RenderTargetHandle _handle);
/// Set view render target for multiple views.
void setViewRenderTargetMask(uint32_t _viewMask, RenderTargetHandle _handle);
/// Set view view and projection matrices, all draw primitives in this
/// view will use these matrices.
void setViewTransform(uint8_t _id, const void* _view, const void* _proj, uint8_t _other = 0xff);
/// Set view view and projection matrices for multiple views.
void setViewTransformMask(uint32_t _viewMask, const void* _view, const void* _proj, uint8_t _other = 0xff);
/// Set render states for draw primitive.
/// BGFX_STATE_*
void setState(uint64_t _state);
/// Set stencil test state.
///
/// @param _fstencil Front stencil state.
/// @param _bstencil Back stencil state. If back is set to BGFX_STENCIL_NONE
/// _fstencil is applied to both front and back facing primitives.
void setStencil(uint32_t _fstencil, uint32_t _bstencil = BGFX_STENCIL_NONE);
/// Set model matrix for draw primitive. If it is not called model will
/// be rendered with identity model matrix.
///
/// @param _mtx pointer to first matrix in array.
/// @param _num number of matrices in array.
/// @returns index into matrix cache in case the same model matrix has to
/// be used for other draw primitive call.
uint32_t setTransform(const void* _mtx, uint16_t _num = 1);
/// Set model matrix from matrix cache for draw primitive.
///
/// @param _cache index in matrix cache.
/// @param _num number of matrices from cache.
void setTransform(uint32_t _cache, uint16_t _num = 1);
/// Set shader uniform parameter for draw primitive.
void setUniform(UniformHandle _handle, const void* _value, uint16_t _num = 1);
/// Set index buffer for draw primitive.
void setIndexBuffer(IndexBufferHandle _handle, uint32_t _firstIndex, uint32_t _numIndices);
/// Set index buffer for draw primitive.
void setIndexBuffer(IndexBufferHandle _handle);
/// Set index buffer for draw primitive.
void setIndexBuffer(DynamicIndexBufferHandle _handle, uint32_t _firstIndex, uint32_t _numIndices);
/// Set index buffer for draw primitive.
void setIndexBuffer(DynamicIndexBufferHandle _handle);
/// Set index buffer for draw primitive.
void setIndexBuffer(const TransientIndexBuffer* _tib, uint32_t _numIndices = UINT32_MAX);
/// Set vertex buffer for draw primitive.
void setVertexBuffer(VertexBufferHandle _handle, uint32_t _numVertices = UINT32_MAX);
/// Set vertex buffer for draw primitive.
void setVertexBuffer(DynamicVertexBufferHandle _handle, uint32_t _numVertices = UINT32_MAX);
/// Set vertex buffer for draw primitive.
void setVertexBuffer(const TransientVertexBuffer* _tvb, uint32_t _numVertices = UINT32_MAX);
/// Set instance data buffer for draw primitive.
void setInstanceDataBuffer(const InstanceDataBuffer* _idb, uint16_t _num = UINT16_MAX);
/// Set program for draw primitive.
void setProgram(ProgramHandle _handle);
/// Set texture stage for draw primitive.
void setTexture(uint8_t _stage, UniformHandle _sampler, TextureHandle _handle);
/// Set texture stage for draw primitive.
void setTexture(uint8_t _stage, UniformHandle _sampler, RenderTargetHandle _handle, bool _depth = false);
/// Submit primitive for rendering into single view.
///
/// @param _id View id.
/// @param _depth depth for sorting.
void submit(uint8_t _id, int32_t _depth = 0);
/// Submit primitive for rendering into multiple views.
///
/// @param _viewMask mask to which views to submit draw primitive calls.
/// @param _depth depth for sorting.
void submitMask(uint32_t _viewMask, int32_t _depth = 0);
/// Request screen shot.
void saveScreenShot(const char* _filePath);
} // namespace bgfx
#endif // __BGFX_H__
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