379 lines
11 KiB
C++
379 lines
11 KiB
C++
/*
|
|
* Copyright 2011-2020 Branimir Karadzic. All rights reserved.
|
|
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
|
|
*/
|
|
|
|
#include "common.h"
|
|
#include "bgfx_utils.h"
|
|
#include "imgui/imgui.h"
|
|
|
|
namespace
|
|
{
|
|
|
|
struct PosNormalTangentTexcoordVertex
|
|
{
|
|
float m_x;
|
|
float m_y;
|
|
float m_z;
|
|
uint32_t m_normal;
|
|
uint32_t m_tangent;
|
|
int16_t m_u;
|
|
int16_t m_v;
|
|
|
|
static void init()
|
|
{
|
|
ms_layout
|
|
.begin()
|
|
.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float)
|
|
.add(bgfx::Attrib::Normal, 4, bgfx::AttribType::Uint8, true, true)
|
|
.add(bgfx::Attrib::Tangent, 4, bgfx::AttribType::Uint8, true, true)
|
|
.add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Int16, true, true)
|
|
.end();
|
|
}
|
|
|
|
static bgfx::VertexLayout ms_layout;
|
|
};
|
|
|
|
bgfx::VertexLayout PosNormalTangentTexcoordVertex::ms_layout;
|
|
|
|
static PosNormalTangentTexcoordVertex s_cubeVertices[24] =
|
|
{
|
|
{-1.0f, 1.0f, 1.0f, encodeNormalRgba8( 0.0f, 0.0f, 1.0f), 0, 0, 0 },
|
|
{ 1.0f, 1.0f, 1.0f, encodeNormalRgba8( 0.0f, 0.0f, 1.0f), 0, 0x7fff, 0 },
|
|
{-1.0f, -1.0f, 1.0f, encodeNormalRgba8( 0.0f, 0.0f, 1.0f), 0, 0, 0x7fff },
|
|
{ 1.0f, -1.0f, 1.0f, encodeNormalRgba8( 0.0f, 0.0f, 1.0f), 0, 0x7fff, 0x7fff },
|
|
{-1.0f, 1.0f, -1.0f, encodeNormalRgba8( 0.0f, 0.0f, -1.0f), 0, 0, 0 },
|
|
{ 1.0f, 1.0f, -1.0f, encodeNormalRgba8( 0.0f, 0.0f, -1.0f), 0, 0x7fff, 0 },
|
|
{-1.0f, -1.0f, -1.0f, encodeNormalRgba8( 0.0f, 0.0f, -1.0f), 0, 0, 0x7fff },
|
|
{ 1.0f, -1.0f, -1.0f, encodeNormalRgba8( 0.0f, 0.0f, -1.0f), 0, 0x7fff, 0x7fff },
|
|
{-1.0f, 1.0f, 1.0f, encodeNormalRgba8( 0.0f, 1.0f, 0.0f), 0, 0, 0 },
|
|
{ 1.0f, 1.0f, 1.0f, encodeNormalRgba8( 0.0f, 1.0f, 0.0f), 0, 0x7fff, 0 },
|
|
{-1.0f, 1.0f, -1.0f, encodeNormalRgba8( 0.0f, 1.0f, 0.0f), 0, 0, 0x7fff },
|
|
{ 1.0f, 1.0f, -1.0f, encodeNormalRgba8( 0.0f, 1.0f, 0.0f), 0, 0x7fff, 0x7fff },
|
|
{-1.0f, -1.0f, 1.0f, encodeNormalRgba8( 0.0f, -1.0f, 0.0f), 0, 0, 0 },
|
|
{ 1.0f, -1.0f, 1.0f, encodeNormalRgba8( 0.0f, -1.0f, 0.0f), 0, 0x7fff, 0 },
|
|
{-1.0f, -1.0f, -1.0f, encodeNormalRgba8( 0.0f, -1.0f, 0.0f), 0, 0, 0x7fff },
|
|
{ 1.0f, -1.0f, -1.0f, encodeNormalRgba8( 0.0f, -1.0f, 0.0f), 0, 0x7fff, 0x7fff },
|
|
{ 1.0f, -1.0f, 1.0f, encodeNormalRgba8( 1.0f, 0.0f, 0.0f), 0, 0, 0 },
|
|
{ 1.0f, 1.0f, 1.0f, encodeNormalRgba8( 1.0f, 0.0f, 0.0f), 0, 0x7fff, 0 },
|
|
{ 1.0f, -1.0f, -1.0f, encodeNormalRgba8( 1.0f, 0.0f, 0.0f), 0, 0, 0x7fff },
|
|
{ 1.0f, 1.0f, -1.0f, encodeNormalRgba8( 1.0f, 0.0f, 0.0f), 0, 0x7fff, 0x7fff },
|
|
{-1.0f, -1.0f, 1.0f, encodeNormalRgba8(-1.0f, 0.0f, 0.0f), 0, 0, 0 },
|
|
{-1.0f, 1.0f, 1.0f, encodeNormalRgba8(-1.0f, 0.0f, 0.0f), 0, 0x7fff, 0 },
|
|
{-1.0f, -1.0f, -1.0f, encodeNormalRgba8(-1.0f, 0.0f, 0.0f), 0, 0, 0x7fff },
|
|
{-1.0f, 1.0f, -1.0f, encodeNormalRgba8(-1.0f, 0.0f, 0.0f), 0, 0x7fff, 0x7fff },
|
|
};
|
|
|
|
static const uint16_t s_cubeIndices[36] =
|
|
{
|
|
0, 2, 1,
|
|
1, 2, 3,
|
|
4, 5, 6,
|
|
5, 7, 6,
|
|
|
|
8, 10, 9,
|
|
9, 10, 11,
|
|
12, 13, 14,
|
|
13, 15, 14,
|
|
|
|
16, 18, 17,
|
|
17, 18, 19,
|
|
20, 21, 22,
|
|
21, 23, 22,
|
|
};
|
|
|
|
class ExampleBump : public entry::AppI
|
|
{
|
|
public:
|
|
ExampleBump(const char* _name, const char* _description, const char* _url)
|
|
: entry::AppI(_name, _description, _url)
|
|
{
|
|
}
|
|
|
|
void init(int32_t _argc, const char* const* _argv, uint32_t _width, uint32_t _height) override
|
|
{
|
|
Args args(_argc, _argv);
|
|
|
|
m_width = _width;
|
|
m_height = _height;
|
|
m_debug = BGFX_DEBUG_NONE;
|
|
m_reset = BGFX_RESET_VSYNC;
|
|
|
|
bgfx::Init init;
|
|
init.type = args.m_type;
|
|
init.vendorId = args.m_pciId;
|
|
init.resolution.width = m_width;
|
|
init.resolution.height = m_height;
|
|
init.resolution.reset = m_reset;
|
|
bgfx::init(init);
|
|
|
|
// Enable debug text.
|
|
bgfx::setDebug(m_debug);
|
|
|
|
// Set view 0 clear state.
|
|
bgfx::setViewClear(0
|
|
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
|
|
, 0x303030ff
|
|
, 1.0f
|
|
, 0
|
|
);
|
|
|
|
// Get renderer capabilities info.
|
|
const bgfx::Caps* caps = bgfx::getCaps();
|
|
m_instancingSupported = 0 != (caps->supported & BGFX_CAPS_INSTANCING);
|
|
|
|
// Create vertex stream declaration.
|
|
PosNormalTangentTexcoordVertex::init();
|
|
|
|
calcTangents(s_cubeVertices
|
|
, BX_COUNTOF(s_cubeVertices)
|
|
, PosNormalTangentTexcoordVertex::ms_layout
|
|
, s_cubeIndices
|
|
, BX_COUNTOF(s_cubeIndices)
|
|
);
|
|
|
|
// Create static vertex buffer.
|
|
m_vbh = bgfx::createVertexBuffer(
|
|
bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) )
|
|
, PosNormalTangentTexcoordVertex::ms_layout
|
|
);
|
|
|
|
// Create static index buffer.
|
|
m_ibh = bgfx::createIndexBuffer(bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) ) );
|
|
|
|
// Create texture sampler uniforms.
|
|
s_texColor = bgfx::createUniform("s_texColor", bgfx::UniformType::Sampler);
|
|
s_texNormal = bgfx::createUniform("s_texNormal", bgfx::UniformType::Sampler);
|
|
|
|
m_numLights = 4;
|
|
u_lightPosRadius = bgfx::createUniform("u_lightPosRadius", bgfx::UniformType::Vec4, m_numLights);
|
|
u_lightRgbInnerR = bgfx::createUniform("u_lightRgbInnerR", bgfx::UniformType::Vec4, m_numLights);
|
|
|
|
// Create program from shaders.
|
|
m_program = loadProgram(m_instancingSupported ? "vs_bump_instanced" : "vs_bump", "fs_bump");
|
|
|
|
// Load diffuse texture.
|
|
m_textureColor = loadTexture("textures/fieldstone-rgba.dds");
|
|
|
|
// Load normal texture.
|
|
m_textureNormal = loadTexture("textures/fieldstone-n.dds");
|
|
|
|
m_timeOffset = bx::getHPCounter();
|
|
|
|
imguiCreate();
|
|
}
|
|
|
|
virtual int shutdown() override
|
|
{
|
|
imguiDestroy();
|
|
|
|
// Cleanup.
|
|
bgfx::destroy(m_ibh);
|
|
bgfx::destroy(m_vbh);
|
|
bgfx::destroy(m_program);
|
|
bgfx::destroy(m_textureColor);
|
|
bgfx::destroy(m_textureNormal);
|
|
bgfx::destroy(s_texColor);
|
|
bgfx::destroy(s_texNormal);
|
|
bgfx::destroy(u_lightPosRadius);
|
|
bgfx::destroy(u_lightRgbInnerR);
|
|
|
|
// Shutdown bgfx.
|
|
bgfx::shutdown();
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool update() override
|
|
{
|
|
if (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) )
|
|
{
|
|
imguiBeginFrame(m_mouseState.m_mx
|
|
, m_mouseState.m_my
|
|
, (m_mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
|
|
| (m_mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0)
|
|
| (m_mouseState.m_buttons[entry::MouseButton::Middle] ? IMGUI_MBUT_MIDDLE : 0)
|
|
, m_mouseState.m_mz
|
|
, uint16_t(m_width)
|
|
, uint16_t(m_height)
|
|
);
|
|
|
|
showExampleDialog(this);
|
|
|
|
imguiEndFrame();
|
|
|
|
// Set view 0 default viewport.
|
|
bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
|
|
|
|
// This dummy draw call is here to make sure that view 0 is cleared
|
|
// if no other draw calls are submitted to view 0.
|
|
bgfx::touch(0);
|
|
|
|
float time = (float)( (bx::getHPCounter()-m_timeOffset)/double(bx::getHPFrequency() ));
|
|
|
|
const bx::Vec3 at = { 0.0f, 0.0f, 0.0f };
|
|
const bx::Vec3 eye = { 0.0f, 0.0f, -7.0f };
|
|
|
|
// Set view and projection matrix for view 0.
|
|
{
|
|
float view[16];
|
|
bx::mtxLookAt(view, eye, at);
|
|
|
|
float proj[16];
|
|
bx::mtxProj(proj, 60.0f, float(m_width) / float(m_height), 0.1f, 100.0f, bgfx::getCaps()->homogeneousDepth);
|
|
bgfx::setViewTransform(0, view, proj);
|
|
|
|
// Set view 0 default viewport.
|
|
bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
|
|
}
|
|
|
|
float lightPosRadius[4][4];
|
|
for (uint32_t ii = 0; ii < m_numLights; ++ii)
|
|
{
|
|
lightPosRadius[ii][0] = bx::sin( (time*(0.1f + ii*0.17f) + ii*bx::kPiHalf*1.37f ) )*3.0f;
|
|
lightPosRadius[ii][1] = bx::cos( (time*(0.2f + ii*0.29f) + ii*bx::kPiHalf*1.49f ) )*3.0f;
|
|
lightPosRadius[ii][2] = -2.5f;
|
|
lightPosRadius[ii][3] = 3.0f;
|
|
}
|
|
|
|
bgfx::setUniform(u_lightPosRadius, lightPosRadius, m_numLights);
|
|
|
|
float lightRgbInnerR[4][4] =
|
|
{
|
|
{ 1.0f, 0.7f, 0.2f, 0.8f },
|
|
{ 0.7f, 0.2f, 1.0f, 0.8f },
|
|
{ 0.2f, 1.0f, 0.7f, 0.8f },
|
|
{ 1.0f, 0.4f, 0.2f, 0.8f },
|
|
};
|
|
|
|
bgfx::setUniform(u_lightRgbInnerR, lightRgbInnerR, m_numLights);
|
|
|
|
const uint16_t instanceStride = 64;
|
|
const uint16_t numInstances = 3;
|
|
|
|
if (m_instancingSupported)
|
|
{
|
|
// Write instance data for 3x3 cubes.
|
|
for (uint32_t yy = 0; yy < 3; ++yy)
|
|
{
|
|
if (numInstances == bgfx::getAvailInstanceDataBuffer(numInstances, instanceStride) )
|
|
{
|
|
bgfx::InstanceDataBuffer idb;
|
|
bgfx::allocInstanceDataBuffer(&idb, numInstances, instanceStride);
|
|
|
|
uint8_t* data = idb.data;
|
|
|
|
for (uint32_t xx = 0; xx < 3; ++xx)
|
|
{
|
|
float* mtx = (float*)data;
|
|
bx::mtxRotateXY(mtx, time*0.023f + xx*0.21f, time*0.03f + yy*0.37f);
|
|
mtx[12] = -3.0f + float(xx)*3.0f;
|
|
mtx[13] = -3.0f + float(yy)*3.0f;
|
|
mtx[14] = 0.0f;
|
|
|
|
data += instanceStride;
|
|
}
|
|
|
|
// Set instance data buffer.
|
|
bgfx::setInstanceDataBuffer(&idb, 0, numInstances);
|
|
|
|
// Set vertex and index buffer.
|
|
bgfx::setVertexBuffer(0, m_vbh);
|
|
bgfx::setIndexBuffer(m_ibh);
|
|
|
|
// Bind textures.
|
|
bgfx::setTexture(0, s_texColor, m_textureColor);
|
|
bgfx::setTexture(1, s_texNormal, m_textureNormal);
|
|
|
|
// Set render states.
|
|
bgfx::setState(0
|
|
| BGFX_STATE_WRITE_RGB
|
|
| BGFX_STATE_WRITE_A
|
|
| BGFX_STATE_WRITE_Z
|
|
| BGFX_STATE_DEPTH_TEST_LESS
|
|
| BGFX_STATE_MSAA
|
|
);
|
|
|
|
// Submit primitive for rendering to view 0.
|
|
bgfx::submit(0, m_program);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (uint32_t yy = 0; yy < 3; ++yy)
|
|
{
|
|
for (uint32_t xx = 0; xx < 3; ++xx)
|
|
{
|
|
float mtx[16];
|
|
bx::mtxRotateXY(mtx, time*0.023f + xx*0.21f, time*0.03f + yy*0.37f);
|
|
mtx[12] = -3.0f + float(xx)*3.0f;
|
|
mtx[13] = -3.0f + float(yy)*3.0f;
|
|
mtx[14] = 0.0f;
|
|
|
|
// Set transform for draw call.
|
|
bgfx::setTransform(mtx);
|
|
|
|
// Set vertex and index buffer.
|
|
bgfx::setVertexBuffer(0, m_vbh);
|
|
bgfx::setIndexBuffer(m_ibh);
|
|
|
|
// Bind textures.
|
|
bgfx::setTexture(0, s_texColor, m_textureColor);
|
|
bgfx::setTexture(1, s_texNormal, m_textureNormal);
|
|
|
|
// Set render states.
|
|
bgfx::setState(0
|
|
| BGFX_STATE_WRITE_RGB
|
|
| BGFX_STATE_WRITE_A
|
|
| BGFX_STATE_WRITE_Z
|
|
| BGFX_STATE_DEPTH_TEST_LESS
|
|
| BGFX_STATE_MSAA
|
|
);
|
|
|
|
// Submit primitive for rendering to view 0.
|
|
bgfx::submit(0, m_program);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Advance to next frame. Rendering thread will be kicked to
|
|
// process submitted rendering primitives.
|
|
bgfx::frame();
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
entry::MouseState m_mouseState;
|
|
|
|
bgfx::VertexBufferHandle m_vbh;
|
|
bgfx::IndexBufferHandle m_ibh;
|
|
bgfx::UniformHandle s_texColor;
|
|
bgfx::UniformHandle s_texNormal;
|
|
bgfx::UniformHandle u_lightPosRadius;
|
|
bgfx::UniformHandle u_lightRgbInnerR;
|
|
bgfx::ProgramHandle m_program;
|
|
bgfx::TextureHandle m_textureColor;
|
|
bgfx::TextureHandle m_textureNormal;
|
|
uint16_t m_numLights;
|
|
bool m_instancingSupported;
|
|
|
|
uint32_t m_width;
|
|
uint32_t m_height;
|
|
uint32_t m_debug;
|
|
uint32_t m_reset;
|
|
int64_t m_timeOffset;
|
|
};
|
|
|
|
} // namespace
|
|
|
|
ENTRY_IMPLEMENT_MAIN(
|
|
ExampleBump
|
|
, "06-bump"
|
|
, "Loading textures."
|
|
, "https://bkaradzic.github.io/bgfx/examples.html#bump"
|
|
);
|