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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "UnitDrawerState.hpp"
#include "UnitDrawer.h"
#include "Game/Camera.h"
// #include "Lua/LuaMaterial.h"
#include "Rendering/GlobalRendering.h"
#include "Rendering/ShadowHandler.h"
#include "Rendering/Env/SunLighting.h"
#include "Rendering/Env/ISky.h"
#include "Rendering/Env/IWater.h"
#include "Rendering/Env/CubeMapHandler.h"
#include "Rendering/Env/SkyLight.h"
#include "Rendering/GL/GeometryBuffer.h"
#include "Rendering/GL/myGL.h"
#include "Rendering/Shaders/ShaderHandler.h"
#include "Rendering/Shaders/Shader.h"
#include "Sim/Misc/TeamHandler.h"
#include "System/Config/ConfigHandler.h"
#include "System/SpringMath.h"
#include "System/StringUtil.h"
static std::array<const CMatrix44f, 128> dummyPieceMatrices;
const CMatrix44f& IUnitDrawerState::GetDummyPieceMatrixRef(size_t idx) { return dummyPieceMatrices[idx]; }
const CMatrix44f* IUnitDrawerState::GetDummyPieceMatrixPtr(size_t idx) { return &dummyPieceMatrices[idx]; }
float4 IUnitDrawerState::GetTeamColor(int team, float alpha) {
assert(teamHandler.IsValidTeam(team));
const CTeam* t = teamHandler.Team(team);
const uint8_t* c = t->color;
return (float4(c[0] / 255.0f, c[1] / 255.0f, c[2] / 255.0f, alpha));
}
IUnitDrawerState* IUnitDrawerState::GetInstance(bool nopState, bool luaState) {
if (nopState)
return (new UnitDrawerStateNOP());
if (luaState)
return (new UnitDrawerStateLUA());
return (new UnitDrawerStateGLSL());
}
void IUnitDrawerState::EnableCommon(const CUnitDrawer* ud, bool deferredPass) {
EnableTexturesCommon();
SetActiveShader(shadowHandler.ShadowsLoaded(), deferredPass);
assert(modelShaders[MODEL_SHADER_ACTIVE] != nullptr);
modelShaders[MODEL_SHADER_ACTIVE]->Enable();
glAttribStatePtr->BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
void IUnitDrawerState::DisableCommon(const CUnitDrawer* ud, bool deferredPass) {
assert(modelShaders[MODEL_SHADER_ACTIVE] != nullptr);
modelShaders[MODEL_SHADER_ACTIVE]->Disable();
SetActiveShader(shadowHandler.ShadowsLoaded(), deferredPass);
DisableTexturesCommon();
}
void IUnitDrawerState::EnableTexturesCommon() const {
if (shadowHandler.ShadowsLoaded())
shadowHandler.SetupShadowTexSampler(GL_TEXTURE2);
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_CUBE_MAP, cubeMapHandler.GetEnvReflectionTextureID());
glActiveTexture(GL_TEXTURE0);
}
void IUnitDrawerState::DisableTexturesCommon() const {
if (shadowHandler.ShadowsLoaded())
shadowHandler.ResetShadowTexSampler(GL_TEXTURE2);
glActiveTexture(GL_TEXTURE0);
}
bool UnitDrawerStateGLSL::Init(const CUnitDrawer* ud) {
#define sh shaderHandler
const GL::LightHandler* lightHandler = ud->GetLightHandler();
const std::string shaderNames[MODEL_SHADER_COUNT - 1] = {
"ModelShaderGLSL-NoShadowStandard",
"ModelShaderGLSL-ShadowedStandard",
"ModelShaderGLSL-NoShadowDeferred",
"ModelShaderGLSL-ShadowedDeferred",
};
const std::string extraDefs =
("#define NUM_DYNAMIC_MODEL_LIGHTS " + IntToString(lightHandler->NumConfigLights()) + "\n") +
("#define MAX_DYNAMIC_MODEL_LIGHTS " + IntToString(GL::LightHandler::MaxConfigLights()) + "\n") +
("#define MAX_LIGHT_UNIFORM_VECS " + IntToString(GL::LightHandler::MaxUniformVecs()) + "\n") +
("#define MDL_CLIP_PLANE_IDX " + IntToString( IWater::ClipPlaneIndex()) + "\n") +
("#define MDL_FRAGDATA_COUNT " + IntToString(GL::GeometryBuffer::ATTACHMENT_COUNT) + "\n");
const float3 cameraPos = camera->GetPos();
const float3 fogParams = {sky->fogStart, sky->fogEnd, camera->GetFarPlaneDist()};
for (unsigned int n = MODEL_SHADER_NOSHADOW_STANDARD; n <= MODEL_SHADER_SHADOWED_DEFERRED; n++) {
modelShaders[n] = sh->CreateProgramObject("[UnitDrawer]", shaderNames[n]);
modelShaders[n]->AttachShaderObject(sh->CreateShaderObject("GLSL/ModelVertProg.glsl", extraDefs, GL_VERTEX_SHADER));
modelShaders[n]->AttachShaderObject(sh->CreateShaderObject("GLSL/ModelFragProg.glsl", extraDefs, GL_FRAGMENT_SHADER));
modelShaders[n]->SetFlag("USE_SHADOWS", int((n & 1) == 1));
modelShaders[n]->SetFlag("DEFERRED_MODE", int(n >= MODEL_SHADER_NOSHADOW_DEFERRED));
modelShaders[n]->SetFlag("GBUFFER_NORMTEX_IDX", GL::GeometryBuffer::ATTACHMENT_NORMTEX);
modelShaders[n]->SetFlag("GBUFFER_DIFFTEX_IDX", GL::GeometryBuffer::ATTACHMENT_DIFFTEX);
modelShaders[n]->SetFlag("GBUFFER_SPECTEX_IDX", GL::GeometryBuffer::ATTACHMENT_SPECTEX);
modelShaders[n]->SetFlag("GBUFFER_EMITTEX_IDX", GL::GeometryBuffer::ATTACHMENT_EMITTEX);
modelShaders[n]->SetFlag("GBUFFER_MISCTEX_IDX", GL::GeometryBuffer::ATTACHMENT_MISCTEX);
modelShaders[n]->SetFlag("GBUFFER_ZVALTEX_IDX", GL::GeometryBuffer::ATTACHMENT_ZVALTEX);
modelShaders[n]->Link();
modelShaders[n]->SetUniformLocation("diffuseTex"); // idx 0 (t1: diffuse + team-color)
modelShaders[n]->SetUniformLocation("shadingTex"); // idx 1 (t2: spec/refl + self-illum)
modelShaders[n]->SetUniformLocation("shadowTex"); // idx 2
modelShaders[n]->SetUniformLocation("reflectTex"); // idx 3 (cube)
modelShaders[n]->SetUniformLocation("sunDir"); // idx 4
modelShaders[n]->SetUniformLocation("pieceMatrices[0]"); // idx 5
modelShaders[n]->SetUniformLocation("modelMatrix"); // idx 6
modelShaders[n]->SetUniformLocation("viewMatrix"); // idx 7
modelShaders[n]->SetUniformLocation("projMatrix"); // idx 8
modelShaders[n]->SetUniformLocation("fogParams"); // idx 9
modelShaders[n]->SetUniformLocation("waterClipPlane"); // idx 10
modelShaders[n]->SetUniformLocation("upperClipPlane"); // idx 11
modelShaders[n]->SetUniformLocation("lowerClipPlane"); // idx 12
modelShaders[n]->SetUniformLocation("cameraPos"); // idx 13
modelShaders[n]->SetUniformLocation("teamColor"); // idx 14
modelShaders[n]->SetUniformLocation("nanoColor"); // idx 15
modelShaders[n]->SetUniformLocation("fogColor"); // idx 16
modelShaders[n]->SetUniformLocation("sunAmbient"); // idx 17
modelShaders[n]->SetUniformLocation("sunDiffuse"); // idx 18
modelShaders[n]->SetUniformLocation("sunSpecular"); // idx 19
modelShaders[n]->SetUniformLocation("specularExponent"); // idx 20
modelShaders[n]->SetUniformLocation("shadowDensity"); // idx 21
modelShaders[n]->SetUniformLocation("shadowMatrix"); // idx 22
modelShaders[n]->SetUniformLocation("shadowParams"); // idx 23
modelShaders[n]->SetUniformLocation("alphaTestCtrl"); // idx 24
modelShaders[n]->SetUniformLocation("gammaExponent"); // idx 25
modelShaders[n]->SetUniformLocation("fwdDynLights"); // idx 26
modelShaders[n]->Enable();
modelShaders[n]->SetUniform1i(0, 0); // diffuseTex (idx 0, texunit 0)
modelShaders[n]->SetUniform1i(1, 1); // shadingTex (idx 1, texunit 1)
modelShaders[n]->SetUniform1i(2, 2); // shadowTex (idx 2, texunit 2)
modelShaders[n]->SetUniform1i(3, 3); // reflectTex (idx 3, texunit 3)
modelShaders[n]->SetUniform3fv(4, sky->GetLight()->GetLightDir());
modelShaders[n]->SetUniform3fv(9, &fogParams.x);
modelShaders[n]->SetUniform4fv(10, IWater::ModelNullClipPlane());
modelShaders[n]->SetUniform4fv(11, IWater::ModelNullClipPlane());
modelShaders[n]->SetUniform4fv(12, IWater::ModelNullClipPlane());
modelShaders[n]->SetUniform3fv(13, &cameraPos.x);
modelShaders[n]->SetUniformMatrix4fv(7, false, camera->GetViewMatrix());
modelShaders[n]->SetUniformMatrix4fv(8, false, camera->GetProjectionMatrix());
modelShaders[n]->SetUniform4f(14, 0.0f, 0.0f, 0.0f, 0.0f);
modelShaders[n]->SetUniform4f(15, 0.0f, 0.0f, 0.0f, 0.0f);
modelShaders[n]->SetUniform4fv(16, sky->fogColor);
modelShaders[n]->SetUniform3fv(17, &sunLighting->modelAmbientColor[0]);
modelShaders[n]->SetUniform3fv(18, &sunLighting->modelDiffuseColor[0]);
modelShaders[n]->SetUniform3fv(19, &sunLighting->modelSpecularColor[0]);
modelShaders[n]->SetUniform1f(20, sunLighting->specularExponent);
modelShaders[n]->SetUniform1f(21, sunLighting->modelShadowDensity);
modelShaders[n]->SetUniformMatrix4fv(22, false, shadowHandler.GetShadowViewMatrixRaw());
modelShaders[n]->SetUniform4fv(23, shadowHandler.GetShadowParams());
modelShaders[n]->SetUniform4fv(24, float4{0.0f, 0.0f, 0.0f, 1.0f}); // alphaTestCtrl
modelShaders[n]->SetUniform1f(25, globalRendering->gammaExponent);
modelShaders[n]->Disable();
modelShaders[n]->Validate();
}
// make the active shader non-NULL
SetActiveShader(shadowHandler.ShadowsLoaded(), false);
#undef sh
return true;
}
void UnitDrawerStateGLSL::Kill() {
modelShaders.fill(nullptr);
shaderHandler->ReleaseProgramObjects("[UnitDrawer]");
}
void UnitDrawerStateGLSL::Enable(const CUnitDrawer* ud, bool deferredPass, bool alphaPass) {
EnableCommon(ud, deferredPass);
const float3 cameraPos = camera->GetPos();
const float3 fogParams = {sky->fogStart, sky->fogEnd, camera->GetFarPlaneDist()};
Shader::IProgramObject* shader = modelShaders[MODEL_SHADER_ACTIVE];
const GL::LightHandler* cLightHandler = ud->GetLightHandler();
GL::LightHandler* mLightHandler = const_cast<GL::LightHandler*>(cLightHandler); // XXX
if (cLightHandler->NumConfigLights() > 0) {
mLightHandler->Update();
shader->SetUniform4fv(26, cLightHandler->NumUniformVecs(), cLightHandler->GetRawLightDataPtr());
}
shader->SetUniform3fv(9, &fogParams.x);
shader->SetUniform3fv(13, &cameraPos.x);
shader->SetUniformMatrix4fv(7, false, camera->GetViewMatrix());
shader->SetUniformMatrix4fv(8, false, camera->GetProjectionMatrix());
shader->SetUniformMatrix4fv(22, false, shadowHandler.GetShadowViewMatrixRaw());
shader->SetUniform4fv(23, shadowHandler.GetShadowParams());
shader->SetUniform1f(25, globalRendering->gammaExponent);
}
void UnitDrawerStateGLSL::Disable(const CUnitDrawer* ud, bool deferredPass) {
DisableCommon(ud, deferredPass);
}
void UnitDrawerStateGLSL::EnableTextures() const { EnableTexturesCommon(); }
void UnitDrawerStateGLSL::DisableTextures() const { DisableTexturesCommon(); }
void UnitDrawerStateGLSL::EnableShaders(const CUnitDrawer*) { modelShaders[MODEL_SHADER_ACTIVE]->Enable(); }
void UnitDrawerStateGLSL::DisableShaders(const CUnitDrawer*) { modelShaders[MODEL_SHADER_ACTIVE]->Disable(); }
void UnitDrawerStateGLSL::SetSkyLight(const ISkyLight* skyLight) const {
// note: the NOSHADOW shaders do not care about shadow-density
for (unsigned int n = MODEL_SHADER_NOSHADOW_STANDARD; n <= MODEL_SHADER_SHADOWED_DEFERRED; n++) {
modelShaders[n]->Enable();
modelShaders[n]->SetUniform3fv(4, skyLight->GetLightDir());
modelShaders[n]->SetUniform3fv(17, &sunLighting->modelAmbientColor.x);
modelShaders[n]->SetUniform3fv(18, &sunLighting->modelDiffuseColor.x);
modelShaders[n]->SetUniform3fv(19, &sunLighting->modelSpecularColor.x);
modelShaders[n]->SetUniform1f(20, sunLighting->specularExponent);
modelShaders[n]->SetUniform1f(21, sunLighting->modelShadowDensity);
modelShaders[n]->Disable();
}
}
void UnitDrawerStateGLSL::SetAlphaTest(const float4& params) const {
assert(modelShaders[MODEL_SHADER_ACTIVE]->IsBound());
modelShaders[MODEL_SHADER_ACTIVE]->SetUniform4fv(24, params);
}
void UnitDrawerStateGLSL::SetTeamColor(int team, const float2 alpha) const {
assert(modelShaders[MODEL_SHADER_ACTIVE]->IsBound());
modelShaders[MODEL_SHADER_ACTIVE]->SetUniform4fv(14, GetTeamColor(team, alpha.x));
}
void UnitDrawerStateGLSL::SetNanoColor(const float4& color) const {
assert(modelShaders[MODEL_SHADER_ACTIVE]->IsBound());
modelShaders[MODEL_SHADER_ACTIVE]->SetUniform4fv(15, color);
}
void UnitDrawerStateGLSL::SetMatrices(const CMatrix44f& modelMat, const CMatrix44f* pieceMats, size_t numPieceMats) const {
Shader::IProgramObject* po = nullptr;
if (!shadowHandler.InShadowPass()) {
po = modelShaders[MODEL_SHADER_ACTIVE];
assert(shadowHandler.GetCurrentPass() == CShadowHandler::SHADOWGEN_PROGRAM_LAST);
assert(po->IsBound());
if (numPieceMats > 0)
po->SetUniformMatrix4fv(5, -int(std::min(numPieceMats, dummyPieceMatrices.size())), false, &pieceMats[0].m[0]);
po->SetUniformMatrix4fv(6, false, modelMat);
} else {
po = shadowHandler.GetCurrentShadowGenProg();
assert(shadowHandler.GetCurrentPass() == CShadowHandler::SHADOWGEN_PROGRAM_MODEL || shadowHandler.GetCurrentPass() == CShadowHandler::SHADOWGEN_PROGRAM_PROJECTILE);
assert(po->IsBound());
if (numPieceMats > 0)
po->SetUniformMatrix4fv(4, -int(std::min(numPieceMats, dummyPieceMatrices.size())), false, &pieceMats[0].m[0]);
// {Unit,Projectile}Drawer::DrawShadowPass sets view and proj
po->SetUniformMatrix4fv(3, false, modelMat);
}
}
void UnitDrawerStateGLSL::SetWaterClipPlane(const DrawPass::e& drawPass) const {
assert(modelShaders[MODEL_SHADER_ACTIVE]->IsBound());
switch (drawPass) {
case DrawPass::WaterReflection: { modelShaders[MODEL_SHADER_ACTIVE]->SetUniform4fv(10, IWater::ModelReflClipPlane()); } break;
case DrawPass::WaterRefraction: { modelShaders[MODEL_SHADER_ACTIVE]->SetUniform4fv(10, IWater::ModelRefrClipPlane()); } break;
default : { } break;
}
}
void UnitDrawerStateGLSL::SetBuildClipPlanes(const float4& upper, const float4& lower) const {
assert(modelShaders[MODEL_SHADER_ACTIVE]->IsBound());
modelShaders[MODEL_SHADER_ACTIVE]->SetUniform4fv(11, upper);
modelShaders[MODEL_SHADER_ACTIVE]->SetUniform4fv(12, lower);
}
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