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Increased quality of dynamic shadows

master
Tomasz Kapuściński 2015-05-14 15:31:57 +02:00
parent fd182e5515
commit e747443312
2 changed files with 124 additions and 28 deletions
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150
src/graphics/engine/engine.cpp
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@ -118,6 +118,7 @@ CEngine::CEngine(CApplication *app)
m_textureAnisotropy = 1;
m_shadowMapping = false;
m_offscreenShadowRendering = false;
m_qualityShadows = false;
m_totoMode = true;
m_lensMode = true;
m_waterMode = true;
@ -187,6 +188,7 @@ CEngine::CEngine(CApplication *app)
{
m_shadowMapping = (value > 0);
m_offscreenShadowRendering = (value > 1);
m_qualityShadows = (value > 2);
}
m_defaultTexParams.format = TEX_IMG_AUTO;
@ -3238,33 +3240,119 @@ void CEngine::Draw3DScene()
// Enable shadow mapping
if (m_shadowMapping)
{
m_device->SetTextureEnabled(2, true);
m_device->SetTexture(2, m_shadowMap);
m_device->SetTextureMatrix(2, m_shadowTextureMat);
Math::Matrix identity;
identity.LoadIdentity();
m_device->SetTransform(TRANSFORM_WORLD, identity);
TextureStageParams params;
params.colorOperation = TEX_MIX_OPER_MODULATE;
params.wrapS = TEX_WRAP_CLAMP_TO_BORDER;
params.wrapT = TEX_WRAP_CLAMP_TO_BORDER;
m_device->SetTextureStageParams(2, params);
TextureGenerationParams genParams;
for (int i = 0; i < 4; i++)
if (m_qualityShadows)
{
genParams.coords[i].mode = TEX_GEN_EYE_LINEAR;
// Texture Unit 2
m_device->SetTextureEnabled(2, true);
m_device->SetTexture(2, m_shadowMap);
m_device->SetTextureMatrix(2, m_shadowTextureMat);
for (int j = 0; j < 4; j++)
Math::Matrix identity;
identity.LoadIdentity();
m_device->SetTransform(TRANSFORM_WORLD, identity);
float shadowBias = 0.6f;
float shadowUnbias = 1.0f - shadowBias;
TextureStageParams params;
params.colorOperation = TEX_MIX_OPER_MODULATE;
params.colorArg1 = TEX_MIX_ARG_TEXTURE;
params.colorArg2 = TEX_MIX_ARG_FACTOR;
params.colorOperation = TEX_MIX_OPER_DEFAULT;
params.factor = Color(shadowBias, shadowBias, shadowBias, 1.0f);
params.wrapS = TEX_WRAP_CLAMP_TO_BORDER;
params.wrapT = TEX_WRAP_CLAMP_TO_BORDER;
m_device->SetTextureStageParams(2, params);
TextureGenerationParams genParams;
for (int i = 0; i < 4; i++)
{
genParams.coords[i].plane[j] = (i == j ? 1.0f : 0.0f);
}
}
genParams.coords[i].mode = TEX_GEN_EYE_LINEAR;
m_device->SetTextureCoordGeneration(2, genParams);
for (int j = 0; j < 4; j++)
{
genParams.coords[i].plane[j] = (i == j ? 1.0f : 0.0f);
}
}
m_device->SetTextureCoordGeneration(2, genParams);
// Texture Unit 3
m_device->SetTextureEnabled(3, true);
m_device->SetTexture(3, m_shadowMap);
params.LoadDefault();
params.colorOperation = TEX_MIX_OPER_ADD;
params.colorArg1 = TEX_MIX_ARG_COMPUTED_COLOR;
params.colorArg2 = TEX_MIX_ARG_FACTOR;
params.alphaOperation = TEX_MIX_OPER_DEFAULT;
params.factor = Color(shadowUnbias, shadowUnbias, shadowUnbias, 0.0f);
params.wrapS = TEX_WRAP_CLAMP_TO_BORDER;
params.wrapT = TEX_WRAP_CLAMP_TO_BORDER;
m_device->SetTextureStageParams(3, params);
// Texture Unit 4
m_device->SetTextureEnabled(4, true);
m_device->SetTexture(4, m_shadowMap);
params.LoadDefault();
params.colorOperation = TEX_MIX_OPER_MODULATE;
params.colorArg1 = TEX_MIX_ARG_COMPUTED_COLOR;
params.colorArg2 = TEX_MIX_ARG_SRC_COLOR;
params.alphaOperation = TEX_MIX_OPER_DEFAULT;
params.wrapS = TEX_WRAP_CLAMP_TO_BORDER;
params.wrapT = TEX_WRAP_CLAMP_TO_BORDER;
m_device->SetTextureStageParams(4, params);
// Texture Unit 5
m_device->SetTextureEnabled(5, true);
m_device->SetTexture(5, m_shadowMap);
params.LoadDefault();
params.colorOperation = TEX_MIX_OPER_MODULATE;
params.colorArg1 = TEX_MIX_ARG_COMPUTED_COLOR;
params.colorArg2 = TEX_MIX_ARG_TEXTURE_0;
params.alphaOperation = TEX_MIX_OPER_DEFAULT;
params.wrapS = TEX_WRAP_CLAMP_TO_BORDER;
params.wrapT = TEX_WRAP_CLAMP_TO_BORDER;
m_device->SetTextureStageParams(5, params);
}
else // Simpler shadows
{
// Texture Unit 2
m_device->SetTextureEnabled(2, true);
m_device->SetTexture(2, m_shadowMap);
m_device->SetTextureMatrix(2, m_shadowTextureMat);
Math::Matrix identity;
identity.LoadIdentity();
m_device->SetTransform(TRANSFORM_WORLD, identity);
TextureStageParams params;
params.colorOperation = TEX_MIX_OPER_MODULATE;
params.wrapS = TEX_WRAP_CLAMP_TO_BORDER;
params.wrapT = TEX_WRAP_CLAMP_TO_BORDER;
m_device->SetTextureStageParams(2, params);
TextureGenerationParams genParams;
for (int i = 0; i < 4; i++)
{
genParams.coords[i].mode = TEX_GEN_EYE_LINEAR;
for (int j = 0; j < 4; j++)
{
genParams.coords[i].plane[j] = (i == j ? 1.0f : 0.0f);
}
}
m_device->SetTextureCoordGeneration(2, genParams);
}
}
for (int objRank = 0; objRank < static_cast<int>(m_objects.size()); objRank++)
@ -3339,6 +3427,12 @@ void CEngine::Draw3DScene()
m_device->SetTexture(3, 0);
m_device->SetTextureEnabled(3, false);
m_device->SetTexture(4, 0);
m_device->SetTextureEnabled(4, false);
m_device->SetTexture(5, 0);
m_device->SetTextureEnabled(5, false);
}
// Draws the shadows , if shadows enabled
@ -3582,16 +3676,15 @@ void CEngine::RenderShadowMap()
// recompute matrices
Math::Vector worldUp(1.0f, 0.0f, 0.0f);
Math::Vector dir = m_lookatPt - m_eyePt;
float change = Math::Max(0.5f, (5.0f + dir.Length()) / 25.0f);
dir.Normalize();
Math::Vector pos = m_lookatPt + 40.0f * dir;
Math::Vector lightPos = pos + Math::Vector(3.0f, 30.0f, 3.0f);
Math::Vector lookAt = pos + Math::Vector(0.0, 100.0f, 0.0f);
float dist = 75.0f * change;
float dist = 75.0f;
if (m_offscreenShadowRendering) dist = 400.0f * change;
if (m_offscreenShadowRendering) dist = 400.0f;
Math::LoadOrthoProjectionMatrix(m_shadowProjMat, -dist, dist, -dist, dist, -200.0f, 200.0f);
Math::LoadViewMatrix(m_shadowViewMat, lightPos, lookAt, worldUp);
@ -3624,8 +3717,8 @@ void CEngine::RenderShadowMap()
m_device->SetTransform(TRANSFORM_WORLD, m_objects[objRank].transform);
// TODO: check proper object filtering
if (!IsVisible(objRank))
continue;
//if (!IsVisible(objRank))
// continue;
int baseObjRank = m_objects[objRank].baseObjRank;
if (baseObjRank == -1)
@ -3666,6 +3759,7 @@ void CEngine::RenderShadowMap()
}
//m_device->SetRenderState(RENDER_STATE_DEPTH_BIAS, false);
m_device->SetRenderState(RENDER_STATE_ALPHA_TEST, false);
// copy depth buffer to shadow map
m_device->CopyFramebufferToTexture(m_shadowMap, 0, 0, 0, 0, m_shadowMap.size.x, m_shadowMap.size.y);

2
src/graphics/engine/engine.h
View File

@ -1459,6 +1459,8 @@ protected:
bool m_shadowMapping;
//! true enables offscreen shadow rendering
bool m_offscreenShadowRendering;
//! true enables higher quality shadows
bool m_qualityShadows;
//! Map of loaded textures (by name)
std::map<std::string, Texture> m_texNameMap;