scratchfoundation/bgfx
1
0
Fork 0
mirror of https://github.com/scratchfoundation/bgfx.git synced 2024-11-25 09:08:22 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Cleanup.

Browse source
This commit is contained in:
bkaradzic 2013-10-20 13:11:41 -07:00
parent 2d62896623
commit ff21c42797
1 changed files with 59 additions and 56 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

115
examples/14-shadowvolumes/shadowvolumes.cpp
View file

@ -1333,7 +1333,7 @@ void shadowVolumeTransform(float* __restrict _outMtx
, const float* __restrict _lightPos // world pos , const float* __restrict _lightPos // world pos
) )
{ {
/* /**
* Instead of transforming all the vertices, transform light instead: * Instead of transforming all the vertices, transform light instead:
* mtx = pivotTranslate -> rotateZYX -> invScale * mtx = pivotTranslate -> rotateZYX -> invScale
* light = mtx * origin * light = mtx * origin
@ -2236,9 +2236,8 @@ int _main_(int /*_argc*/, char** /*_argv*/)
//setup light positions //setup light positions
float lightPosRadius[MAX_NUM_LIGHTS][4]; float lightPosRadius[MAX_NUM_LIGHTS][4];
switch (lightPattern) if (LightPattern0 == lightPattern)
{ {
case LightPattern0:
for (uint8_t ii = 0; ii < settings_numLights; ++ii) for (uint8_t ii = 0; ii < settings_numLights; ++ii)
{ {
lightPosRadius[ii][0] = cos(2.0f*float(M_PI)/settings_numLights * float(ii) + lightTimeAccumulator * 1.1f + 3.0f) * 20.0f; lightPosRadius[ii][0] = cos(2.0f*float(M_PI)/settings_numLights * float(ii) + lightTimeAccumulator * 1.1f + 3.0f) * 20.0f;
@ -2246,8 +2245,9 @@ int _main_(int /*_argc*/, char** /*_argv*/)
lightPosRadius[ii][2] = sin(2.0f*float(M_PI)/settings_numLights * float(ii) + lightTimeAccumulator * 1.1f + 3.0f) * 20.0f; lightPosRadius[ii][2] = sin(2.0f*float(M_PI)/settings_numLights * float(ii) + lightTimeAccumulator * 1.1f + 3.0f) * 20.0f;
lightPosRadius[ii][3] = 20.0f; lightPosRadius[ii][3] = 20.0f;
} }
break; }
case LightPattern1: else
{
for (uint8_t ii = 0; ii < settings_numLights; ++ii) for (uint8_t ii = 0; ii < settings_numLights; ++ii)
{ {
lightPosRadius[ii][0] = cos(float(ii) * 2.0f/settings_numLights + lightTimeAccumulator * 1.3f + float(M_PI) ) * 40.0f; lightPosRadius[ii][0] = cos(float(ii) * 2.0f/settings_numLights + lightTimeAccumulator * 1.3f + float(M_PI) ) * 40.0f;
@ -2255,7 +2255,6 @@ int _main_(int /*_argc*/, char** /*_argv*/)
lightPosRadius[ii][2] = sin(float(ii) * 2.0f/settings_numLights + lightTimeAccumulator * 1.3f + float(M_PI) ) * 40.0f; lightPosRadius[ii][2] = sin(float(ii) * 2.0f/settings_numLights + lightTimeAccumulator * 1.3f + float(M_PI) ) * 40.0f;
lightPosRadius[ii][3] = 20.0f; lightPosRadius[ii][3] = 20.0f;
} }
break;
} }
//use debug font to print information about this example. //use debug font to print information about this example.
@ -2426,52 +2425,55 @@ int _main_(int /*_argc*/, char** /*_argv*/)
} }
// Scene 1 - shadow casters - Bunny instances // Scene 1 - shadow casters - Bunny instances
enum Direction
{ {
Left = 0, enum Direction
Down,
Right,
Up,
DirectionCount,
};
uint8_t currentDirection = Left;
float currX = 0.0f;
float currY = 0.0f;
const float stepX = 20.0f;
const float stepY = 20.0f;
uint8_t stateStep = 0;
float stateChange = 1.0f;
for (uint8_t ii = 0; ii < settings_instanceCount; ++ii)
{
Instance& inst = shadowCasters[Scene1][shadowCastersCount[Scene1]++];
inst.m_scale[0] = 5.0f;
inst.m_scale[1] = 5.0f;
inst.m_scale[2] = 5.0f;
inst.m_rotation[0] = 0.0f;
inst.m_rotation[1] = float(M_PI);
inst.m_rotation[2] = 0.0f;
inst.m_pos[0] = currX;
inst.m_pos[1] = 0.0f;
inst.m_pos[2] = currY;
inst.m_model = bunnyModel;
stateStep++;
if (stateStep >= floor(stateChange/2.0f) )
{ {
currentDirection = (currentDirection+1)%DirectionCount; Left = 0,
stateStep = 0; Down,
stateChange += 1.0f; Right,
} Up,
switch (currentDirection) DirectionCount,
};
uint8_t currentDirection = Left;
float currX = 0.0f;
float currY = 0.0f;
const float stepX = 20.0f;
const float stepY = 20.0f;
uint8_t stateStep = 0;
float stateChange = 1.0f;
for (uint8_t ii = 0; ii < settings_instanceCount; ++ii)
{ {
case Left: currX -= stepX; break; Instance& inst = shadowCasters[Scene1][shadowCastersCount[Scene1]++];
case Down: currY -= stepY; break; inst.m_scale[0] = 5.0f;
case Right: currX += stepX; break; inst.m_scale[1] = 5.0f;
case Up: currY += stepY; break; inst.m_scale[2] = 5.0f;
default: break; inst.m_rotation[0] = 0.0f;
inst.m_rotation[1] = float(M_PI);
inst.m_rotation[2] = 0.0f;
inst.m_pos[0] = currX;
inst.m_pos[1] = 0.0f;
inst.m_pos[2] = currY;
inst.m_model = bunnyModel;
stateStep++;
if (stateStep >= floor(stateChange/2.0f) )
{
currentDirection = (currentDirection+1)%DirectionCount;
stateStep = 0;
stateChange += 1.0f;
}
switch (currentDirection)
{
case Left: currX -= stepX; break;
case Down: currY -= stepY; break;
case Right: currX += stepX; break;
case Up: currY += stepY; break;
default: break;
}
} }
} }
@ -2541,10 +2543,10 @@ int _main_(int /*_argc*/, char** /*_argv*/)
profTime = bx::getHPCounter(); profTime = bx::getHPCounter();
/** /**
* For each light: * For each light:
* 1. Compute and draw shadow volume to stencil buffer * 1. Compute and draw shadow volume to stencil buffer
* 2. Draw diffuse with stencil test * 2. Draw diffuse with stencil test
*/ */
for (uint8_t ii = 0, viewId = VIEWID_RANGE15_PASS2; ii < settings_numLights; ++ii, ++viewId) for (uint8_t ii = 0, viewId = VIEWID_RANGE15_PASS2; ii < settings_numLights; ++ii, ++viewId)
{ {
const float* lightPos = lightPosRadius[ii]; const float* lightPos = lightPosRadius[ii];
@ -2565,7 +2567,7 @@ int _main_(int /*_argc*/, char** /*_argv*/)
} }
// Create near clip volume for current light. // Create near clip volume for current light.
float nearClipVolume[6 * 4]; float nearClipVolume[6 * 4] = {};
float pointLight[4]; float pointLight[4];
if (settings_mixedSvImpl) if (settings_mixedSvImpl)
{ {
@ -2714,9 +2716,10 @@ int _main_(int /*_argc*/, char** /*_argv*/)
s_uniforms.m_params.m_ambientPass = 0.0f; s_uniforms.m_params.m_ambientPass = 0.0f;
s_uniforms.m_params.m_lightningPass = 1.0f; s_uniforms.m_params.m_lightningPass = 1.0f;
RenderState& drawDiffuse = (settings_useStencilTexture ? RenderState& drawDiffuse = settings_useStencilTexture
s_renderStates[RenderState::ShadowVolume_UsingStencilTexture_DrawDiffuse] : ? s_renderStates[RenderState::ShadowVolume_UsingStencilTexture_DrawDiffuse]
s_renderStates[RenderState::ShadowVolume_UsingStencilBuffer_DrawDiffuse]); : s_renderStates[RenderState::ShadowVolume_UsingStencilBuffer_DrawDiffuse]
;
// If using stencil texture, viewId is set to render target. Incr it to render to default back buffer. // If using stencil texture, viewId is set to render target. Incr it to render to default back buffer.
viewId += uint8_t(settings_useStencilTexture); viewId += uint8_t(settings_useStencilTexture);