void TerrainRenderer::RenderTerrainShader(ShadowMap* shadow, bool filtered)
{
ENSURE(m->phase == Phase_Render);
std::vector<CPatchRData*>& visiblePatches = filtered ? m->filteredPatches : m->visiblePatches;
std::vector<CDecalRData*>& visibleDecals = filtered ? m->filteredDecals : m->visibleDecals;
if (visiblePatches.empty() && visibleDecals.empty())
return;
CShaderManager& shaderManager = g_Renderer.GetShaderManager();
typedef std::map<CStr, CStr> Defines;
Defines defBasic;
if (shadow)
{
defBasic["USE_SHADOW"] = "1";
if (g_Renderer.m_Caps.m_ARBProgramShadow && g_Renderer.m_Options.m_ARBProgramShadow)
defBasic["USE_FP_SHADOW"] = "1";
if (g_Renderer.m_Options.m_ShadowPCF)
defBasic["USE_SHADOW_PCF"] = "1";
#if !CONFIG2_GLES
defBasic["USE_SHADOW_SAMPLER"] = "1";
#endif
}
defBasic["LIGHTING_MODEL_" + g_Renderer.GetLightEnv().GetLightingModel()] = "1";
CShaderTechniquePtr techBase(shaderManager.LoadEffect("terrain_base", defBasic));
CShaderTechniquePtr techBlend(shaderManager.LoadEffect("terrain_blend", defBasic));
CShaderTechniquePtr techDecal(shaderManager.LoadEffect("terrain_decal", defBasic));
// render the solid black sides of the map first
CShaderTechniquePtr techSolid = g_Renderer.GetShaderManager().LoadEffect("gui_solid");
techSolid->BeginPass();
CShaderProgramPtr shaderSolid = techSolid->GetShader();
shaderSolid->Uniform("transform", g_Renderer.GetViewCamera().GetViewProjection());
shaderSolid->Uniform("color", 0.0f, 0.0f, 0.0f, 1.0f);
PROFILE_START("render terrain sides");
for (size_t i = 0; i < visiblePatches.size(); ++i)
visiblePatches[i]->RenderSides(shaderSolid);
PROFILE_END("render terrain sides");
techSolid->EndPass();
techBase->BeginPass();
PrepareShader(techBase->GetShader(), shadow);
PROFILE_START("render terrain base");
CPatchRData::RenderBases(visiblePatches, techBase->GetShader(), false);
PROFILE_END("render terrain base");
techBase->EndPass();
// render blends
techBlend->BeginPass();
PrepareShader(techBlend->GetShader(), shadow);
// switch on blending
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// no need to write to the depth buffer a second time
glDepthMask(0);
// render blend passes for each patch
PROFILE_START("render terrain blends");
CPatchRData::RenderBlends(visiblePatches, techBlend->GetShader(), false);
PROFILE_END("render terrain blends");
techBlend->EndPass();
// Render terrain decals
techDecal->BeginPass();
PrepareShader(techDecal->GetShader(), shadow);
PROFILE_START("render terrain decals");
for (size_t i = 0; i < visibleDecals.size(); ++i)
visibleDecals[i]->Render(techDecal->GetShader(), false);
PROFILE_END("render terrain decals");
techDecal->EndPass();
// restore OpenGL state
g_Renderer.BindTexture(1, 0);
g_Renderer.BindTexture(2, 0);
g_Renderer.BindTexture(3, 0);
glDepthMask(1);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_BLEND);
}
void TerrainRenderer::RenderTerrainShader(const CShaderDefines& context, ShadowMap* shadow, bool filtered)
{
ENSURE(m->phase == Phase_Render);
std::vector<CPatchRData*>& visiblePatches = filtered ? m->filteredPatches : m->visiblePatches;
std::vector<CDecalRData*>& visibleDecals = filtered ? m->filteredDecals : m->visibleDecals;
if (visiblePatches.empty() && visibleDecals.empty())
return;
CShaderManager& shaderManager = g_Renderer.GetShaderManager();
CShaderTechniquePtr techBase(shaderManager.LoadEffect(CStrIntern("terrain_base"), context, CShaderDefines()));
CShaderTechniquePtr techBlend(shaderManager.LoadEffect(CStrIntern("terrain_blend"), context, CShaderDefines()));
CShaderTechniquePtr techDecal(shaderManager.LoadEffect(CStrIntern("terrain_decal"), context, CShaderDefines()));
// render the solid black sides of the map first
CShaderTechniquePtr techSolid = g_Renderer.GetShaderManager().LoadEffect("gui_solid");
techSolid->BeginPass();
CShaderProgramPtr shaderSolid = techSolid->GetShader();
shaderSolid->Uniform("transform", g_Renderer.GetViewCamera().GetViewProjection());
shaderSolid->Uniform("color", 0.0f, 0.0f, 0.0f, 1.0f);
PROFILE_START("render terrain sides");
for (size_t i = 0; i < visiblePatches.size(); ++i)
visiblePatches[i]->RenderSides(shaderSolid);
PROFILE_END("render terrain sides");
techSolid->EndPass();
techBase->BeginPass();
PrepareShader(techBase->GetShader(), shadow);
PROFILE_START("render terrain base");
CPatchRData::RenderBases(visiblePatches, techBase->GetShader(), false);
PROFILE_END("render terrain base");
techBase->EndPass();
// render blends
techBlend->BeginPass();
PrepareShader(techBlend->GetShader(), shadow);
// switch on blending
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// no need to write to the depth buffer a second time
glDepthMask(0);
// render blend passes for each patch
PROFILE_START("render terrain blends");
CPatchRData::RenderBlends(visiblePatches, techBlend->GetShader(), false);
PROFILE_END("render terrain blends");
techBlend->EndPass();
// Render terrain decals
techDecal->BeginPass();
PrepareShader(techDecal->GetShader(), shadow);
PROFILE_START("render terrain decals");
for (size_t i = 0; i < visibleDecals.size(); ++i)
visibleDecals[i]->Render(techDecal->GetShader(), false);
PROFILE_END("render terrain decals");
techDecal->EndPass();
// restore OpenGL state
g_Renderer.BindTexture(1, 0);
g_Renderer.BindTexture(2, 0);
g_Renderer.BindTexture(3, 0);
glDepthMask(1);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_BLEND);
}
