shadowmaps simple to entry::AppI (#1157)
This commit is contained in:
attilaz
Branimir Karadžić
parent
10d78210f7
commit
a7d937f990
@ -41,329 +41,375 @@ static const uint16_t s_planeIndices[] =
|
||||
1, 3, 2,
|
||||
};
|
||||
|
||||
int _main_(int _argc, char** _argv)
|
||||
class ExampleShadowmapsSimple : public entry::AppI
|
||||
{
|
||||
Args args(_argc, _argv);
|
||||
void init(int _argc, char** _argv) BX_OVERRIDE
|
||||
{
|
||||
|
||||
uint32_t width = 1280;
|
||||
uint32_t height = 720;
|
||||
uint32_t debug = BGFX_DEBUG_TEXT;
|
||||
uint32_t reset = BGFX_RESET_VSYNC;
|
||||
|
||||
bgfx::init(args.m_type, args.m_pciId);
|
||||
bgfx::reset(width, height, reset);
|
||||
|
||||
bgfx::RendererType::Enum renderer = bgfx::getRendererType();
|
||||
bool flipV = false
|
||||
Args args(_argc, _argv);
|
||||
|
||||
m_width = 1280;
|
||||
m_height = 720;
|
||||
m_debug = BGFX_DEBUG_TEXT;
|
||||
m_reset = BGFX_RESET_VSYNC;
|
||||
|
||||
bgfx::init(args.m_type, args.m_pciId);
|
||||
bgfx::reset(m_width, m_height, m_reset);
|
||||
|
||||
bgfx::RendererType::Enum renderer = bgfx::getRendererType();
|
||||
m_flipV = false
|
||||
|| renderer == bgfx::RendererType::OpenGL
|
||||
|| renderer == bgfx::RendererType::OpenGLES
|
||||
;
|
||||
|
||||
// Enable debug text.
|
||||
bgfx::setDebug(debug);
|
||||
|
||||
// Uniforms.
|
||||
bgfx::UniformHandle u_shadowMap = bgfx::createUniform("u_shadowMap", bgfx::UniformType::Int1);
|
||||
bgfx::UniformHandle u_lightPos = bgfx::createUniform("u_lightPos", bgfx::UniformType::Vec4);
|
||||
bgfx::UniformHandle u_lightMtx = bgfx::createUniform("u_lightMtx", bgfx::UniformType::Mat4);
|
||||
// When using GL clip space depth range [-1, 1] and packing depth into color buffer, we need to
|
||||
// adjust the depth range to be [0, 1] for writing to the color buffer
|
||||
bgfx::UniformHandle u_depthScaleOffset = bgfx::createUniform("u_depthScaleOffset", bgfx::UniformType::Vec4);
|
||||
const float depthScale = flipV ? 0.5f : 1.0f;
|
||||
const float depthOffset = flipV ? 0.5f : 0.0f;
|
||||
float depthScaleOffset[4] = {depthScale, depthOffset, 0.0f, 0.0f};
|
||||
bgfx::setUniform(u_depthScaleOffset, depthScaleOffset);
|
||||
|
||||
// Vertex declarations.
|
||||
bgfx::VertexDecl PosNormalDecl;
|
||||
PosNormalDecl.begin()
|
||||
|
||||
// Enable debug text.
|
||||
bgfx::setDebug(m_debug);
|
||||
|
||||
// Uniforms.
|
||||
u_shadowMap = bgfx::createUniform("u_shadowMap", bgfx::UniformType::Int1);
|
||||
u_lightPos = bgfx::createUniform("u_lightPos", bgfx::UniformType::Vec4);
|
||||
u_lightMtx = bgfx::createUniform("u_lightMtx", bgfx::UniformType::Mat4);
|
||||
|
||||
// When using GL clip space depth range [-1, 1] and packing depth into color buffer, we need to
|
||||
// adjust the depth range to be [0, 1] for writing to the color buffer
|
||||
u_depthScaleOffset = bgfx::createUniform("u_depthScaleOffset", bgfx::UniformType::Vec4);
|
||||
m_depthScale = m_flipV ? 0.5f : 1.0f;
|
||||
m_depthOffset = m_flipV ? 0.5f : 0.0f;
|
||||
float depthScaleOffset[4] = {m_depthScale, m_depthOffset, 0.0f, 0.0f};
|
||||
bgfx::setUniform(u_depthScaleOffset, depthScaleOffset);
|
||||
|
||||
// Vertex declarations.
|
||||
bgfx::VertexDecl PosNormalDecl;
|
||||
PosNormalDecl.begin()
|
||||
.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float)
|
||||
.add(bgfx::Attrib::Normal, 4, bgfx::AttribType::Uint8, true, true)
|
||||
.end();
|
||||
|
||||
// Meshes.
|
||||
Mesh* bunny = meshLoad("meshes/bunny.bin");
|
||||
Mesh* cube = meshLoad("meshes/cube.bin");
|
||||
Mesh* hollowcube = meshLoad("meshes/hollowcube.bin");
|
||||
|
||||
bgfx::VertexBufferHandle vbh = bgfx::createVertexBuffer(
|
||||
bgfx::makeRef(s_hplaneVertices, sizeof(s_hplaneVertices) )
|
||||
, PosNormalDecl
|
||||
);
|
||||
|
||||
bgfx::IndexBufferHandle ibh = bgfx::createIndexBuffer(
|
||||
bgfx::makeRef(s_planeIndices, sizeof(s_planeIndices) )
|
||||
);
|
||||
|
||||
// Render targets.
|
||||
uint16_t shadowMapSize = 512;
|
||||
|
||||
// Get renderer capabilities info.
|
||||
const bgfx::Caps* caps = bgfx::getCaps();
|
||||
// Shadow samplers are supported at least partially supported if texture
|
||||
// compare less equal feature is supported.
|
||||
bool shadowSamplerSupported = 0 != (caps->supported & BGFX_CAPS_TEXTURE_COMPARE_LEQUAL);
|
||||
|
||||
bgfx::ProgramHandle progShadow;
|
||||
bgfx::ProgramHandle progMesh;
|
||||
bgfx::TextureHandle shadowMapTexture;
|
||||
bgfx::FrameBufferHandle shadowMapFB;
|
||||
|
||||
if (shadowSamplerSupported)
|
||||
{
|
||||
// Depth textures and shadow samplers are supported.
|
||||
progShadow = loadProgram("vs_sms_shadow", "fs_sms_shadow");
|
||||
progMesh = loadProgram("vs_sms_mesh", "fs_sms_mesh");
|
||||
|
||||
shadowMapTexture = bgfx::createTexture2D(shadowMapSize, shadowMapSize, false, 1, bgfx::TextureFormat::D16, BGFX_TEXTURE_RT | BGFX_TEXTURE_COMPARE_LEQUAL);
|
||||
bgfx::TextureHandle fbtextures[] = { shadowMapTexture };
|
||||
shadowMapFB = bgfx::createFrameBuffer(BX_COUNTOF(fbtextures), fbtextures, true);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Depth textures and shadow samplers are not supported. Use float
|
||||
// depth packing into color buffer instead.
|
||||
progShadow = loadProgram("vs_sms_shadow_pd", "fs_sms_shadow_pd");
|
||||
progMesh = loadProgram("vs_sms_mesh", "fs_sms_mesh_pd");
|
||||
|
||||
shadowMapTexture = bgfx::createTexture2D(shadowMapSize, shadowMapSize, false, 1, bgfx::TextureFormat::BGRA8, BGFX_TEXTURE_RT);
|
||||
bgfx::TextureHandle fbtextures[] =
|
||||
|
||||
// Meshes.
|
||||
m_bunny = meshLoad("meshes/bunny.bin");
|
||||
m_cube = meshLoad("meshes/cube.bin");
|
||||
m_hollowcube = meshLoad("meshes/hollowcube.bin");
|
||||
|
||||
m_vbh = bgfx::createVertexBuffer(
|
||||
bgfx::makeRef(s_hplaneVertices, sizeof(s_hplaneVertices) )
|
||||
, PosNormalDecl
|
||||
);
|
||||
|
||||
m_ibh = bgfx::createIndexBuffer(
|
||||
bgfx::makeRef(s_planeIndices, sizeof(s_planeIndices) )
|
||||
);
|
||||
|
||||
// Render targets.
|
||||
m_shadowMapSize = 512;
|
||||
|
||||
// Get renderer capabilities info.
|
||||
const bgfx::Caps* caps = bgfx::getCaps();
|
||||
// Shadow samplers are supported at least partially supported if texture
|
||||
// compare less equal feature is supported.
|
||||
m_shadowSamplerSupported = 0 != (caps->supported & BGFX_CAPS_TEXTURE_COMPARE_LEQUAL);
|
||||
|
||||
bgfx::TextureHandle shadowMapTexture;
|
||||
|
||||
if (m_shadowSamplerSupported)
|
||||
{
|
||||
shadowMapTexture,
|
||||
bgfx::createTexture2D(shadowMapSize, shadowMapSize, false, 1, bgfx::TextureFormat::D16, BGFX_TEXTURE_RT_WRITE_ONLY),
|
||||
};
|
||||
shadowMapFB = bgfx::createFrameBuffer(BX_COUNTOF(fbtextures), fbtextures, true);
|
||||
}
|
||||
|
||||
MeshState* state[2];
|
||||
state[0] = meshStateCreate();
|
||||
state[0]->m_state = 0
|
||||
| BGFX_STATE_RGB_WRITE
|
||||
| BGFX_STATE_ALPHA_WRITE
|
||||
| BGFX_STATE_DEPTH_WRITE
|
||||
| BGFX_STATE_DEPTH_TEST_LESS
|
||||
| BGFX_STATE_CULL_CCW
|
||||
| BGFX_STATE_MSAA
|
||||
;
|
||||
state[0]->m_program = progShadow;
|
||||
state[0]->m_viewId = RENDER_SHADOW_PASS_ID;
|
||||
state[0]->m_numTextures = 0;
|
||||
|
||||
state[1] = meshStateCreate();
|
||||
state[1]->m_state = 0
|
||||
| BGFX_STATE_RGB_WRITE
|
||||
| BGFX_STATE_ALPHA_WRITE
|
||||
| BGFX_STATE_DEPTH_WRITE
|
||||
| BGFX_STATE_DEPTH_TEST_LESS
|
||||
| BGFX_STATE_CULL_CCW
|
||||
| BGFX_STATE_MSAA
|
||||
;
|
||||
state[1]->m_program = progMesh;
|
||||
state[1]->m_viewId = RENDER_SCENE_PASS_ID;
|
||||
state[1]->m_numTextures = 1;
|
||||
state[1]->m_textures[0].m_flags = UINT32_MAX;
|
||||
state[1]->m_textures[0].m_stage = 0;
|
||||
state[1]->m_textures[0].m_sampler = u_shadowMap;
|
||||
state[1]->m_textures[0].m_texture = shadowMapTexture;
|
||||
|
||||
// Set view and projection matrices.
|
||||
float view[16];
|
||||
float proj[16];
|
||||
|
||||
float eye[3] = { 0.0f, 30.0f, -60.0f };
|
||||
float at[3] = { 0.0f, 5.0f, 0.0f };
|
||||
bx::mtxLookAt(view, eye, at);
|
||||
|
||||
const float aspect = float(int32_t(width) ) / float(int32_t(height) );
|
||||
bx::mtxProj(proj, 60.0f, aspect, 0.1f, 1000.0f, bgfx::getCaps()->homogeneousDepth);
|
||||
|
||||
// Time acumulators.
|
||||
float timeAccumulatorLight = 0.0f;
|
||||
float timeAccumulatorScene = 0.0f;
|
||||
|
||||
entry::MouseState mouseState;
|
||||
while (!entry::processEvents(width, height, debug, reset, &mouseState) )
|
||||
{
|
||||
// Time.
|
||||
int64_t now = bx::getHPCounter();
|
||||
static int64_t last = now;
|
||||
const int64_t frameTime = now - last;
|
||||
last = now;
|
||||
const double freq = double(bx::getHPFrequency() );
|
||||
const double toMs = 1000.0/freq;
|
||||
const float deltaTime = float(frameTime/freq);
|
||||
|
||||
// Update time accumulators.
|
||||
timeAccumulatorLight += deltaTime;
|
||||
timeAccumulatorScene += deltaTime;
|
||||
|
||||
// Use debug font to print information about this example.
|
||||
bgfx::dbgTextClear();
|
||||
bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/15-shadowmaps-simple");
|
||||
bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Shadow maps example (technique: %s).", shadowSamplerSupported ? "depth texture and shadow samplers" : "shadow depth packed into color texture");
|
||||
bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
|
||||
|
||||
// Setup lights.
|
||||
float lightPos[4];
|
||||
lightPos[0] = -bx::fcos(timeAccumulatorLight);
|
||||
lightPos[1] = -1.0f;
|
||||
lightPos[2] = -bx::fsin(timeAccumulatorLight);
|
||||
lightPos[3] = 0.0f;
|
||||
|
||||
bgfx::setUniform(u_lightPos, lightPos);
|
||||
|
||||
// Setup instance matrices.
|
||||
float mtxFloor[16];
|
||||
bx::mtxSRT(mtxFloor
|
||||
, 30.0f, 30.0f, 30.0f
|
||||
, 0.0f, 0.0f, 0.0f
|
||||
, 0.0f, 0.0f, 0.0f
|
||||
);
|
||||
|
||||
float mtxBunny[16];
|
||||
bx::mtxSRT(mtxBunny
|
||||
, 5.0f, 5.0f, 5.0f
|
||||
, 0.0f, bx::kPi - timeAccumulatorScene, 0.0f
|
||||
, 15.0f, 5.0f, 0.0f
|
||||
);
|
||||
|
||||
float mtxHollowcube[16];
|
||||
bx::mtxSRT(mtxHollowcube
|
||||
, 2.5f, 2.5f, 2.5f
|
||||
, 0.0f, 1.56f - timeAccumulatorScene, 0.0f
|
||||
, 0.0f, 10.0f, 0.0f
|
||||
);
|
||||
|
||||
float mtxCube[16];
|
||||
bx::mtxSRT(mtxCube
|
||||
, 2.5f, 2.5f, 2.5f
|
||||
, 0.0f, 1.56f - timeAccumulatorScene, 0.0f
|
||||
, -15.0f, 5.0f, 0.0f
|
||||
);
|
||||
|
||||
// Define matrices.
|
||||
float lightView[16];
|
||||
float lightProj[16];
|
||||
|
||||
eye[0] = -lightPos[0];
|
||||
eye[1] = -lightPos[1];
|
||||
eye[2] = -lightPos[2];
|
||||
|
||||
at[0] = 0.0f;
|
||||
at[1] = 0.0f;
|
||||
at[2] = 0.0f;
|
||||
|
||||
bx::mtxLookAt(lightView, eye, at);
|
||||
|
||||
const float area = 30.0f;
|
||||
bx::mtxOrtho(lightProj, -area, area, -area, area, -100.0f, 100.0f, 0.0f, flipV);
|
||||
|
||||
bgfx::setViewRect(RENDER_SHADOW_PASS_ID, 0, 0, shadowMapSize, shadowMapSize);
|
||||
bgfx::setViewFrameBuffer(RENDER_SHADOW_PASS_ID, shadowMapFB);
|
||||
bgfx::setViewTransform(RENDER_SHADOW_PASS_ID, lightView, lightProj);
|
||||
|
||||
bgfx::setViewRect(RENDER_SCENE_PASS_ID, 0, 0, uint16_t(width), uint16_t(height) );
|
||||
bgfx::setViewTransform(RENDER_SCENE_PASS_ID, view, proj);
|
||||
|
||||
// Clear backbuffer and shadowmap framebuffer at beginning.
|
||||
bgfx::setViewClear(RENDER_SHADOW_PASS_ID
|
||||
, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH
|
||||
, 0x303030ff, 1.0f, 0
|
||||
);
|
||||
|
||||
bgfx::setViewClear(RENDER_SCENE_PASS_ID
|
||||
, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH
|
||||
, 0x303030ff, 1.0f, 0
|
||||
);
|
||||
|
||||
// Render.
|
||||
float mtxShadow[16];
|
||||
float lightMtx[16];
|
||||
|
||||
const float sy = flipV ? 0.5f : -0.5f;
|
||||
const float mtxCrop[16] =
|
||||
{
|
||||
0.5f, 0.0f, 0.0f, 0.0f,
|
||||
0.0f, sy, 0.0f, 0.0f,
|
||||
0.0f, 0.0f, depthScale, 0.0f,
|
||||
0.5f, 0.5f, depthOffset, 1.0f,
|
||||
};
|
||||
|
||||
float mtxTmp[16];
|
||||
bx::mtxMul(mtxTmp, lightProj, mtxCrop);
|
||||
bx::mtxMul(mtxShadow, lightView, mtxTmp);
|
||||
|
||||
// Floor.
|
||||
bx::mtxMul(lightMtx, mtxFloor, mtxShadow);
|
||||
uint32_t cached = bgfx::setTransform(mtxFloor);
|
||||
for (uint32_t pass = 0; pass < 2; ++pass)
|
||||
{
|
||||
const MeshState& st = *state[pass];
|
||||
bgfx::setTransform(cached);
|
||||
for (uint8_t tex = 0; tex < st.m_numTextures; ++tex)
|
||||
{
|
||||
const MeshState::Texture& texture = st.m_textures[tex];
|
||||
bgfx::setTexture(texture.m_stage
|
||||
, texture.m_sampler
|
||||
, texture.m_texture
|
||||
, texture.m_flags
|
||||
);
|
||||
}
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
bgfx::setIndexBuffer(ibh);
|
||||
bgfx::setVertexBuffer(0, vbh);
|
||||
bgfx::setState(st.m_state);
|
||||
bgfx::submit(st.m_viewId, st.m_program);
|
||||
// Depth textures and shadow samplers are supported.
|
||||
m_progShadow = loadProgram("vs_sms_shadow", "fs_sms_shadow");
|
||||
m_progMesh = loadProgram("vs_sms_mesh", "fs_sms_mesh");
|
||||
|
||||
shadowMapTexture = bgfx::createTexture2D(m_shadowMapSize, m_shadowMapSize, false, 1, bgfx::TextureFormat::D16, BGFX_TEXTURE_RT | BGFX_TEXTURE_COMPARE_LEQUAL);
|
||||
bgfx::TextureHandle fbtextures[] = { shadowMapTexture };
|
||||
m_shadowMapFB = bgfx::createFrameBuffer(BX_COUNTOF(fbtextures), fbtextures, true);
|
||||
}
|
||||
|
||||
// Bunny.
|
||||
bx::mtxMul(lightMtx, mtxBunny, mtxShadow);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(bunny, &state[0], 1, mtxBunny);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(bunny, &state[1], 1, mtxBunny);
|
||||
|
||||
// Hollow cube.
|
||||
bx::mtxMul(lightMtx, mtxHollowcube, mtxShadow);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(hollowcube, &state[0], 1, mtxHollowcube);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(hollowcube, &state[1], 1, mtxHollowcube);
|
||||
|
||||
// Cube.
|
||||
bx::mtxMul(lightMtx, mtxCube, mtxShadow);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(cube, &state[0], 1, mtxCube);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(cube, &state[1], 1, mtxCube);
|
||||
|
||||
// Advance to next frame. Rendering thread will be kicked to
|
||||
// process submitted rendering primitives.
|
||||
bgfx::frame();
|
||||
else
|
||||
{
|
||||
// Depth textures and shadow samplers are not supported. Use float
|
||||
// depth packing into color buffer instead.
|
||||
m_progShadow = loadProgram("vs_sms_shadow_pd", "fs_sms_shadow_pd");
|
||||
m_progMesh = loadProgram("vs_sms_mesh", "fs_sms_mesh_pd");
|
||||
|
||||
shadowMapTexture = bgfx::createTexture2D(m_shadowMapSize, m_shadowMapSize, false, 1, bgfx::TextureFormat::BGRA8, BGFX_TEXTURE_RT);
|
||||
bgfx::TextureHandle fbtextures[] =
|
||||
{
|
||||
shadowMapTexture,
|
||||
bgfx::createTexture2D(m_shadowMapSize, m_shadowMapSize, false, 1, bgfx::TextureFormat::D16, BGFX_TEXTURE_RT_WRITE_ONLY),
|
||||
};
|
||||
m_shadowMapFB = bgfx::createFrameBuffer(BX_COUNTOF(fbtextures), fbtextures, true);
|
||||
}
|
||||
|
||||
m_state[0] = meshStateCreate();
|
||||
m_state[0]->m_state = 0
|
||||
| BGFX_STATE_RGB_WRITE
|
||||
| BGFX_STATE_ALPHA_WRITE
|
||||
| BGFX_STATE_DEPTH_WRITE
|
||||
| BGFX_STATE_DEPTH_TEST_LESS
|
||||
| BGFX_STATE_CULL_CCW
|
||||
| BGFX_STATE_MSAA
|
||||
;
|
||||
m_state[0]->m_program = m_progShadow;
|
||||
m_state[0]->m_viewId = RENDER_SHADOW_PASS_ID;
|
||||
m_state[0]->m_numTextures = 0;
|
||||
|
||||
m_state[1] = meshStateCreate();
|
||||
m_state[1]->m_state = 0
|
||||
| BGFX_STATE_RGB_WRITE
|
||||
| BGFX_STATE_ALPHA_WRITE
|
||||
| BGFX_STATE_DEPTH_WRITE
|
||||
| BGFX_STATE_DEPTH_TEST_LESS
|
||||
| BGFX_STATE_CULL_CCW
|
||||
| BGFX_STATE_MSAA
|
||||
;
|
||||
m_state[1]->m_program = m_progMesh;
|
||||
m_state[1]->m_viewId = RENDER_SCENE_PASS_ID;
|
||||
m_state[1]->m_numTextures = 1;
|
||||
m_state[1]->m_textures[0].m_flags = UINT32_MAX;
|
||||
m_state[1]->m_textures[0].m_stage = 0;
|
||||
m_state[1]->m_textures[0].m_sampler = u_shadowMap;
|
||||
m_state[1]->m_textures[0].m_texture = shadowMapTexture;
|
||||
|
||||
// Set view and projection matrices.
|
||||
|
||||
float eye[3] = { 0.0f, 30.0f, -60.0f };
|
||||
float at[3] = { 0.0f, 5.0f, 0.0f };
|
||||
bx::mtxLookAt(m_view, eye, at);
|
||||
|
||||
const float aspect = float(int32_t(m_width) ) / float(int32_t(m_height) );
|
||||
bx::mtxProj(m_proj, 60.0f, aspect, 0.1f, 1000.0f, bgfx::getCaps()->homogeneousDepth);
|
||||
|
||||
// Time acumulators.
|
||||
m_timeAccumulatorLight = 0.0f;
|
||||
m_timeAccumulatorScene = 0.0f;
|
||||
}
|
||||
|
||||
virtual int shutdown() BX_OVERRIDE
|
||||
{
|
||||
meshUnload(m_bunny);
|
||||
meshUnload(m_cube);
|
||||
meshUnload(m_hollowcube);
|
||||
|
||||
meshStateDestroy(m_state[0]);
|
||||
meshStateDestroy(m_state[1]);
|
||||
|
||||
bgfx::destroyVertexBuffer(m_vbh);
|
||||
bgfx::destroyIndexBuffer(m_ibh);
|
||||
|
||||
bgfx::destroyProgram(m_progShadow);
|
||||
bgfx::destroyProgram(m_progMesh);
|
||||
|
||||
bgfx::destroyFrameBuffer(m_shadowMapFB);
|
||||
|
||||
bgfx::destroyUniform(u_shadowMap);
|
||||
bgfx::destroyUniform(u_lightPos);
|
||||
bgfx::destroyUniform(u_lightMtx);
|
||||
bgfx::destroyUniform(u_depthScaleOffset);
|
||||
|
||||
// Shutdown bgfx.
|
||||
bgfx::shutdown();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
meshUnload(bunny);
|
||||
meshUnload(cube);
|
||||
meshUnload(hollowcube);
|
||||
bool update() BX_OVERRIDE
|
||||
{
|
||||
while (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) )
|
||||
{
|
||||
// Time.
|
||||
int64_t now = bx::getHPCounter();
|
||||
static int64_t last = now;
|
||||
const int64_t frameTime = now - last;
|
||||
last = now;
|
||||
const double freq = double(bx::getHPFrequency() );
|
||||
const double toMs = 1000.0/freq;
|
||||
const float deltaTime = float(frameTime/freq);
|
||||
|
||||
// Update time accumulators.
|
||||
m_timeAccumulatorLight += deltaTime;
|
||||
m_timeAccumulatorScene += deltaTime;
|
||||
|
||||
// Use debug font to print information about this example.
|
||||
bgfx::dbgTextClear();
|
||||
bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/15-shadowmaps-simple");
|
||||
bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Shadow maps example (technique: %s).", m_shadowSamplerSupported ? "depth texture and shadow samplers" : "shadow depth packed into color texture");
|
||||
bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
|
||||
|
||||
// Setup lights.
|
||||
float lightPos[4];
|
||||
lightPos[0] = -bx::fcos(m_timeAccumulatorLight);
|
||||
lightPos[1] = -1.0f;
|
||||
lightPos[2] = -bx::fsin(m_timeAccumulatorLight);
|
||||
lightPos[3] = 0.0f;
|
||||
|
||||
bgfx::setUniform(u_lightPos, lightPos);
|
||||
|
||||
// Setup instance matrices.
|
||||
float mtxFloor[16];
|
||||
bx::mtxSRT(mtxFloor
|
||||
, 30.0f, 30.0f, 30.0f
|
||||
, 0.0f, 0.0f, 0.0f
|
||||
, 0.0f, 0.0f, 0.0f
|
||||
);
|
||||
|
||||
float mtxBunny[16];
|
||||
bx::mtxSRT(mtxBunny
|
||||
, 5.0f, 5.0f, 5.0f
|
||||
, 0.0f, bx::kPi - m_timeAccumulatorScene, 0.0f
|
||||
, 15.0f, 5.0f, 0.0f
|
||||
);
|
||||
|
||||
float mtxHollowcube[16];
|
||||
bx::mtxSRT(mtxHollowcube
|
||||
, 2.5f, 2.5f, 2.5f
|
||||
, 0.0f, 1.56f - m_timeAccumulatorScene, 0.0f
|
||||
, 0.0f, 10.0f, 0.0f
|
||||
);
|
||||
|
||||
float mtxCube[16];
|
||||
bx::mtxSRT(mtxCube
|
||||
, 2.5f, 2.5f, 2.5f
|
||||
, 0.0f, 1.56f - m_timeAccumulatorScene, 0.0f
|
||||
, -15.0f, 5.0f, 0.0f
|
||||
);
|
||||
|
||||
// Define matrices.
|
||||
float lightView[16];
|
||||
float lightProj[16];
|
||||
|
||||
float eye[3] = { -lightPos[0], -lightPos[1], -lightPos[2] };
|
||||
float at[3] = { 0.0f, 0.0f, 0.0f };
|
||||
|
||||
bx::mtxLookAt(lightView, eye, at);
|
||||
|
||||
const float area = 30.0f;
|
||||
bx::mtxOrtho(lightProj, -area, area, -area, area, -100.0f, 100.0f, 0.0f, m_flipV);
|
||||
|
||||
bgfx::setViewRect(RENDER_SHADOW_PASS_ID, 0, 0, m_shadowMapSize, m_shadowMapSize);
|
||||
bgfx::setViewFrameBuffer(RENDER_SHADOW_PASS_ID, m_shadowMapFB);
|
||||
bgfx::setViewTransform(RENDER_SHADOW_PASS_ID, lightView, lightProj);
|
||||
|
||||
bgfx::setViewRect(RENDER_SCENE_PASS_ID, 0, 0, uint16_t(m_width), uint16_t(m_height) );
|
||||
bgfx::setViewTransform(RENDER_SCENE_PASS_ID, m_view, m_proj);
|
||||
|
||||
// Clear backbuffer and shadowmap framebuffer at beginning.
|
||||
bgfx::setViewClear(RENDER_SHADOW_PASS_ID
|
||||
, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH
|
||||
, 0x303030ff, 1.0f, 0
|
||||
);
|
||||
|
||||
bgfx::setViewClear(RENDER_SCENE_PASS_ID
|
||||
, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH
|
||||
, 0x303030ff, 1.0f, 0
|
||||
);
|
||||
|
||||
// Render.
|
||||
float mtxShadow[16];
|
||||
float lightMtx[16];
|
||||
|
||||
const float sy = m_flipV ? 0.5f : -0.5f;
|
||||
const float mtxCrop[16] =
|
||||
{
|
||||
0.5f, 0.0f, 0.0f, 0.0f,
|
||||
0.0f, sy, 0.0f, 0.0f,
|
||||
0.0f, 0.0f, m_depthScale, 0.0f,
|
||||
0.5f, 0.5f, m_depthOffset, 1.0f,
|
||||
};
|
||||
|
||||
float mtxTmp[16];
|
||||
bx::mtxMul(mtxTmp, lightProj, mtxCrop);
|
||||
bx::mtxMul(mtxShadow, lightView, mtxTmp);
|
||||
|
||||
// Floor.
|
||||
bx::mtxMul(lightMtx, mtxFloor, mtxShadow);
|
||||
uint32_t cached = bgfx::setTransform(mtxFloor);
|
||||
for (uint32_t pass = 0; pass < 2; ++pass)
|
||||
{
|
||||
const MeshState& st = *m_state[pass];
|
||||
bgfx::setTransform(cached);
|
||||
for (uint8_t tex = 0; tex < st.m_numTextures; ++tex)
|
||||
{
|
||||
const MeshState::Texture& texture = st.m_textures[tex];
|
||||
bgfx::setTexture(texture.m_stage
|
||||
, texture.m_sampler
|
||||
, texture.m_texture
|
||||
, texture.m_flags
|
||||
);
|
||||
}
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
bgfx::setIndexBuffer(m_ibh);
|
||||
bgfx::setVertexBuffer(0, m_vbh);
|
||||
bgfx::setState(st.m_state);
|
||||
bgfx::submit(st.m_viewId, st.m_program);
|
||||
}
|
||||
|
||||
// Bunny.
|
||||
bx::mtxMul(lightMtx, mtxBunny, mtxShadow);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(m_bunny, &m_state[0], 1, mtxBunny);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(m_bunny, &m_state[1], 1, mtxBunny);
|
||||
|
||||
// Hollow cube.
|
||||
bx::mtxMul(lightMtx, mtxHollowcube, mtxShadow);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(m_hollowcube, &m_state[0], 1, mtxHollowcube);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(m_hollowcube, &m_state[1], 1, mtxHollowcube);
|
||||
|
||||
// Cube.
|
||||
bx::mtxMul(lightMtx, mtxCube, mtxShadow);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(m_cube, &m_state[0], 1, mtxCube);
|
||||
bgfx::setUniform(u_lightMtx, lightMtx);
|
||||
meshSubmit(m_cube, &m_state[1], 1, mtxCube);
|
||||
|
||||
// Advance to next frame. Rendering thread will be kicked to
|
||||
// process submitted rendering primitives.
|
||||
bgfx::frame();
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
entry::MouseState m_mouseState;
|
||||
uint32_t m_width;
|
||||
uint32_t m_height;
|
||||
uint32_t m_debug;
|
||||
uint32_t m_reset;
|
||||
|
||||
bool m_flipV;
|
||||
|
||||
bgfx::UniformHandle u_shadowMap;
|
||||
bgfx::UniformHandle u_lightPos;
|
||||
bgfx::UniformHandle u_lightMtx;
|
||||
|
||||
bgfx::UniformHandle u_depthScaleOffset;
|
||||
float m_depthScale;
|
||||
float m_depthOffset;
|
||||
|
||||
Mesh* m_bunny;
|
||||
Mesh* m_cube;
|
||||
Mesh* m_hollowcube;
|
||||
|
||||
bgfx::VertexBufferHandle m_vbh;
|
||||
bgfx::IndexBufferHandle m_ibh;
|
||||
|
||||
uint16_t m_shadowMapSize;
|
||||
|
||||
bgfx::ProgramHandle m_progShadow;
|
||||
bgfx::ProgramHandle m_progMesh;
|
||||
bgfx::FrameBufferHandle m_shadowMapFB;
|
||||
|
||||
bool m_shadowSamplerSupported;
|
||||
|
||||
MeshState* m_state[2];
|
||||
|
||||
float m_timeAccumulatorLight;
|
||||
float m_timeAccumulatorScene;
|
||||
|
||||
float m_view[16];
|
||||
float m_proj[16];
|
||||
|
||||
meshStateDestroy(state[0]);
|
||||
meshStateDestroy(state[1]);
|
||||
};
|
||||
|
||||
bgfx::destroyVertexBuffer(vbh);
|
||||
bgfx::destroyIndexBuffer(ibh);
|
||||
ENTRY_IMPLEMENT_MAIN(ExampleShadowmapsSimple);
|
||||
|
||||
bgfx::destroyProgram(progShadow);
|
||||
bgfx::destroyProgram(progMesh);
|
||||
|
||||
bgfx::destroyFrameBuffer(shadowMapFB);
|
||||
|
||||
bgfx::destroyUniform(u_shadowMap);
|
||||
bgfx::destroyUniform(u_lightPos);
|
||||
bgfx::destroyUniform(u_lightMtx);
|
||||
bgfx::destroyUniform(u_depthScaleOffset);
|
||||
|
||||
// Shutdown bgfx.
|
||||
bgfx::shutdown();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user