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You can now change the quality of SSAO by sliding the SSAO Quality

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This commit is contained in:
Teejoon
2016-02-26 11:51:20 +01:00
parent 748a178801
commit f56705d921
16 changed files with 334 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/Engine/Rendering/DrawFinalPass.h
+5 -3
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@@ -5,6 +5,7 @@
#include "DrawFinalPassState.h"
#include "LightCullingPass.h"
#include "CubeMapPass.h"
#include "SSAOPass.h"
#include "FrameBuffer.h"
#include "ShaderProgram.h"
#include "Util/UnorderedMapVec2.h"
@@ -14,12 +15,12 @@
class DrawFinalPass
{
public:
DrawFinalPass(IRenderer* renderer, LightCullingPass* lightCullingPass, CubeMapPass* cubeMapPass);
DrawFinalPass(IRenderer* renderer, LightCullingPass* lightCullingPass, CubeMapPass* cubeMapPass, SSAOPass* ssaoPass);
~DrawFinalPass() { }
void InitializeTextures();
void InitializeFrameBuffers();
void InitializeShaderPrograms();
void Draw(RenderScene& scene, GLuint SSAOTexture);
void Draw(RenderScene& scene);
void ClearBuffer();
void OnWindowResize();
@@ -38,7 +39,7 @@ private:
void GenerateMipMapTexture(GLuint* texture, GLenum wrapping, glm::vec2 dimensions, GLint format, GLenum type, GLint numMipMaps) const;
void DrawSprites(std::list<std::shared_ptr<RenderJob>>&jobs, RenderScene& scene);
void DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>& jobs, RenderScene& scene, GLuint SSAOTexture);
void DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>& jobs, RenderScene& scene);
void DrawShieldToStencilBuffer(std::list<std::shared_ptr<RenderJob>>& jobs, RenderScene& scene);
void DrawShieldedModelRenderQueue(std::list<std::shared_ptr<RenderJob>>& jobs, RenderScene& scene);
void DrawToDepthBuffer(std::list<std::shared_ptr<RenderJob>>& jobs, RenderScene& scene);
@@ -71,6 +72,7 @@ private:
const IRenderer* m_Renderer;
const LightCullingPass* m_LightCullingPass;
const CubeMapPass* m_CubeMapPass;
const SSAOPass* m_SSAOPass;
ShaderProgram* m_ForwardPlusProgram;
ShaderProgram* m_ExplosionEffectProgram;
include/Engine/Rendering/IRenderer.h
+1
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@@ -5,6 +5,7 @@
#include "../OpenGL.h"
#include "../GLM.h"
#include "../Core/Util/Rectangle.h"
#include "../Core/ConfigFile.h"
#include "Util/ScreenCoords.h"
#include "Camera.h"
#include "RenderQueue.h"
include/Engine/Rendering/Renderer.h
+7 -2
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@@ -32,8 +32,9 @@ class Renderer : public IRenderer
static void glfwFrameBufferCallback(GLFWwindow* window, int width, int height);
public:
Renderer(EventBroker* eventBroker)
: m_EventBroker(eventBroker)
Renderer(EventBroker* eventBroker, ConfigFile* config)
: m_EventBroker(eventBroker)
, m_Config(config)
{ }
virtual void Initialize() override;
@@ -47,6 +48,7 @@ private:
//----------------------Variables----------------------//
static std::unordered_map <GLFWwindow*, Renderer*> m_WindowToRenderer;
ConfigFile* m_Config;
EventBroker* m_EventBroker;
TextPass* m_TextPass;
@@ -67,6 +69,9 @@ private:
float m_SSAO_IntensityScale = 1.0f;
int m_SSAO_NumOfSamples = 24;
int m_SSAO_NumOfTurns = 7;
int m_SSAO_iterations = 9;
int m_SSAO_TextureQuality = 0;
int m_SSAO_Quality = 0;
PickingPass* m_PickingPass;
LightCullingPass* m_LightCullingPass;
include/Engine/Rendering/SSAOPass.h
+34 -8
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@@ -13,18 +13,32 @@
class SSAOPass
{
public:
SSAOPass(IRenderer* rendere);
~SSAOPass() {
delete m_DrawBloomPass;
};
SSAOPass(IRenderer* renderer, ConfigFile* config);
~SSAOPass() { };
void ChangeQuality(int quality);
void Draw(GLuint depthBuffer, Camera* camera);
void Setting(float radius, float bias, float contrast, float intensityScale, int numOfSamples, int NumOfTurns);
void Setting(float radius, float bias, float contrast, float intensityScale, int numOfSamples, int numOfTurns, int iterations, int quality);
void ClearBuffer();
void OnWindowResize();
//Return the SSAO of the texture sent to Draw
GLuint SSAOTexture() const { return m_DrawBloomPass->GaussianTexture(); }
GLuint SSAOTexture() const {
if (m_Quality == 0) {
return m_WhiteTexture->m_Texture;
} else {
return m_GaussianTexture_vert;
}
}
int TextureQuality() const {
if (m_Quality == 0) {
return 13;
} else {
return m_TextureQuality;
}
}
private:
void InitializeTexture();
@@ -40,6 +54,7 @@ private:
Model* m_ScreenQuad;
const IRenderer* m_Renderer;
ConfigFile* m_Config;
float m_Radius;
float m_Bias;
@@ -47,6 +62,11 @@ private:
float m_IntensityScale;
int m_NumOfSamples;
int m_NumOfTurns;
int m_Iterations;
int m_TextureQuality;
int m_Quality;
Texture* m_WhiteTexture;
GLuint m_SSAOTexture;
FrameBuffer m_SSAOFramBuffer;
@@ -54,10 +74,16 @@ private:
GLuint m_SSAOViewSpaceZTexture;
FrameBuffer m_SSAOViewSpaceZFramBuffer;
GLuint m_GaussianTexture_horiz;
GLuint m_GaussianTexture_vert;
FrameBuffer m_GaussianFrameBuffer_horiz;
FrameBuffer m_GaussianFrameBuffer_vert;
ShaderProgram* m_SSAOProgram;
ShaderProgram* m_SSAOViewSpaceZProgram;
DrawBloomPass* m_DrawBloomPass;
ShaderProgram* m_GaussianProgram_horiz;
ShaderProgram* m_GaussianProgram_vert;
};
#endif
resources/DefaultConfig.ini
+34 -1
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@@ -36,4 +36,37 @@ ResourceLoading=true
[Sound]
BGMVolume=1.0
SFXVolume=1.0
Announcer=female
Announcer=female
[SSAO]
Quality=0
[SSAO1]
Radius=1.0
Bias=0.02
Contrast=1.5
Intensity=1.0
NumSamples=8
NumTurns=3
NumIterations=5
TextureQuality=2
[SSAO2]
Radius=1.0
Bias=0.02
Contrast=1.5
Intensity=1.0
NumSamples=16
NumTurns=13
NumIterations=9
TextureQuality=1
[SSAO3]
Radius=1.0
Bias=0.02
Contrast=1.5
Intensity=1.0
NumSamples=24
NumTurns=17
NumIterations=13
TextureQuality=0
resources/Shaders/ForwardPlus.frag.glsl
+2 -1
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@@ -13,6 +13,7 @@ uniform vec4 AmbientColor;
uniform float FillPercentage;
uniform float GlowIntensity = 10;
uniform vec3 CameraPosition;
uniform int SSAOQuality;
uniform vec2 DiffuseUVRepeat;
uniform vec2 NormalUVRepeat;
@@ -125,7 +126,7 @@ vec4 CalcNormalMappedValue(vec3 normal, vec3 tangent, vec3 bitangent, vec2 textu
void main()
{
float ao = texelFetch(AOTexture, ivec2(gl_FragCoord.xy), 0).r;
float ao = texelFetch(AOTexture, ivec2(gl_FragCoord.xy) >> int(SSAOQuality), 0).r;
ao = (clamp(1.0 - (1.0 - ao), 0.0, 1.0) + MIN_AMBIENT_LIGHT) / (1.0 + MIN_AMBIENT_LIGHT);
vec4 diffuseTexel = texture2D(DiffuseTexture, Input.TextureCoordinate * DiffuseUVRepeat);
vec4 glowTexel = texture2D(GlowMapTexture, Input.TextureCoordinate * GlowUVRepeat);
resources/Shaders/ForwardPlusSplatMapRGB.frag.glsl
+2 -1
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@@ -11,6 +11,7 @@ uniform vec4 DiffuseColor;
uniform vec4 FillColor;
uniform vec4 Color;
uniform vec4 AmbientColor;
uniform int SSAOQuality;
//Get bineded at the same time as the textures
uniform vec2 DiffuseUVRepeat1;
@@ -177,7 +178,7 @@ vec4 CalcBlendedNormal(vec4 blendValue, sampler2D R, sampler2D G, sampler2D B,
void main()
{
float ao = texelFetch(AOTexture, ivec2(gl_FragCoord.xy), 0).r;
float ao = texelFetch(AOTexture, ivec2(gl_FragCoord.xy) >> int(SSAOQuality), 0).r;
ao = (clamp(1.0 - (1.0 - ao), 0.0, 1.0) + MIN_AMBIENT_LIGHT) / (1.0 + MIN_AMBIENT_LIGHT);
vec4 splatTexel = texture2D(SplatMapTexture, Input.TextureCoordinate);
resources/Shaders/SSAO.frag.glsl
+7 -12
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@@ -2,11 +2,11 @@
//Number of samples per pixel
uniform int uNumOfSamples;
//#define NUM_SAMPLES (11)
//#define uNumOfSamples (11)
//Number of turns around the cirle
uniform int uNumOfTurns;
//#define NUM_TURNS (7)
//#define uNumOfTurns (7)
layout (binding = 0) uniform sampler2D ViewSpaceZ;
@@ -16,15 +16,16 @@ uniform float uProjScale;
//#define ProjScale 500
uniform float uRadius;
//#define Radius 1.0f
//#define uRadius 1.0f
uniform float uBias;
//#define Bias 0.012f
//#define uBias 0.05f
uniform float uContrast;
//#define IntensityDivR6 1
//#define uContrast 1.5f
uniform float uIntensityScale;
//#define uIntensityScale 1.0f
out float AO;
@@ -88,13 +89,7 @@ void main() {
vec3 origin = getVSPosition(originScreenCoord);
float radius;
if(origin.z < uRadius){
radius = origin.z;
} else {
radius = uRadius;
}
float radius = min(origin.z, uRadius);
vec3 originNormal = getVSFaceNormal(origin);
resources/Shaders/SSAO.vert.glsl
+5
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@@ -2,7 +2,12 @@
layout (location = 0) in vec3 Position;
out VertexData{
vec2 TextureCoordinate;
}Output;
void main()
{
gl_Position = vec4(Position, 1.0);
Output.TextureCoordinate = (vec2(Position) + 1) / 2;
}
resources/Shaders/SSAOViewSpaceZ.frag.glsl
+5 -1
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@@ -3,11 +3,15 @@
layout (binding = 0) uniform sampler2D DepthBuffer;
uniform vec3 ClipInfo;
in VertexData{
vec2 TextureCoordinate;
}Input;
out float depthLinear;
//Just for Debug, should be depthLinear
//out vec4 fragmentColor;
void main() {
float depthSample = texelFetch(DepthBuffer, ivec2(gl_FragCoord.xy), 0).r;
float depthSample = texture2D(DepthBuffer, Input.TextureCoordinate).r;
depthLinear = ClipInfo[0] / (ClipInfo[1] * depthSample + ClipInfo[2]);
//float depthLinear = (NearClip) / ( -depthSample + 1.0f);
//fragmentColor = vec4(depthLinear, depthLinear, depthLinear, 1.0f);
src/Engine/Rendering/CubeMapPass.cpp
+1
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@@ -17,6 +17,7 @@ void CubeMapPass::LoadTextures(std::string input)
m_CubeMapTextures.push_back(img);
}
GenerateCubeMapTexture();
m_PreviusCubeMapTexture = input;
}
}
src/Engine/Rendering/DrawFinalPass.cpp
+19 -17
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@@ -1,9 +1,9 @@
#include "Rendering/DrawFinalPass.h"
DrawFinalPass::DrawFinalPass(IRenderer* renderer, LightCullingPass* lightCullingPass, CubeMapPass* cubeMapPass)
: m_Renderer(renderer)
, m_LightCullingPass(lightCullingPass)
, m_CubeMapPass(cubeMapPass)
DrawFinalPass::DrawFinalPass(IRenderer* renderer, LightCullingPass* lightCullingPass, CubeMapPass* cubeMapPass, SSAOPass* ssaoPass)
: m_Renderer(renderer)
, m_LightCullingPass(lightCullingPass)
, m_CubeMapPass(cubeMapPass)
, m_SSAOPass(ssaoPass)
{
//TODO: Make sure that uniforms are not sent into shader if not needed.
m_ShieldPixelRate = 8;
@@ -175,7 +175,7 @@ void DrawFinalPass::InitializeShaderPrograms()
GLERROR("Creating DepthFill program");
}
void DrawFinalPass::Draw(RenderScene& scene, GLuint SSAOTexture)
void DrawFinalPass::Draw(RenderScene& scene)
{
GLERROR("Pre");
DrawFinalPassState* state = new DrawFinalPassState(m_FinalPassFrameBuffer.GetHandle());
@@ -191,10 +191,10 @@ void DrawFinalPass::Draw(RenderScene& scene, GLuint SSAOTexture)
//Fill depth buffer
state->StencilMask(0x00);
DrawModelRenderQueues(scene.Jobs.OpaqueObjects, scene, SSAOTexture);
DrawModelRenderQueues(scene.Jobs.OpaqueObjects, scene);
GLERROR("OpaqueObjects");
state->BlendFunc(GL_ONE, GL_ONE);
DrawModelRenderQueues(scene.Jobs.TransparentObjects, scene, SSAOTexture);
DrawModelRenderQueues(scene.Jobs.TransparentObjects, scene);
GLERROR("TransparentObjects");
state->BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
DrawSprites(scene.Jobs.SpriteJob, scene);
@@ -210,11 +210,11 @@ void DrawFinalPass::Draw(RenderScene& scene, GLuint SSAOTexture)
//Draw Opaque shielded objects
state->StencilFunc(GL_NOTEQUAL, 1, 0xFF);
state->StencilMask(0x00);
DrawModelRenderQueues(scene.Jobs.OpaqueShieldedObjects, scene, SSAOTexture); //might need changing
DrawModelRenderQueues(scene.Jobs.OpaqueShieldedObjects, scene); //might need changing
GLERROR("Shielded Opaque object");
//Draw Transparen Shielded objects
DrawModelRenderQueues(scene.Jobs.TransparentShieldedObjects, scene, SSAOTexture); //might need changing
DrawModelRenderQueues(scene.Jobs.TransparentShieldedObjects, scene); //might need changing
GLERROR("Shielded Transparent objects");
GLERROR("END");
@@ -250,9 +250,9 @@ void DrawFinalPass::Draw(RenderScene& scene, GLuint SSAOTexture)
stateLowRes->Enable(GL_DEPTH_TEST);
stateLowRes->StencilFunc(GL_LEQUAL, 1, 0xFF);
stateLowRes->StencilMask(0x00);
DrawModelRenderQueues(scene.Jobs.OpaqueObjects, scene, SSAOTexture);
DrawModelRenderQueues(scene.Jobs.OpaqueObjects, scene);
GLERROR("OpaqueObjects");
DrawModelRenderQueues(scene.Jobs.TransparentObjects, scene, SSAOTexture);
DrawModelRenderQueues(scene.Jobs.TransparentObjects, scene);
GLERROR("TransparentObjects");
glViewport(0, 0, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height);
glScissor(0, 0, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height);
@@ -340,7 +340,7 @@ void DrawFinalPass::GenerateMipMapTexture(GLuint* texture, GLenum wrapping, glm:
GLERROR("MipMap Texture initialization failed");
}
void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>& jobs, RenderScene& scene, GLuint SSAOTexture)
void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>& jobs, RenderScene& scene)
{
GLuint forwardHandle = m_ForwardPlusProgram->GetHandle();
GLERROR("forwardHandle");
@@ -364,7 +364,7 @@ void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>&
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, m_LightCullingPass->LightIndexSSBO());
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, SSAOTexture);
glBindTexture(GL_TEXTURE_2D, m_SSAOPass->SSAOTexture());
for (auto &job : jobs) {
auto explosionEffectJob = std::dynamic_pointer_cast<ExplosionEffectJob>(job);
@@ -383,7 +383,7 @@ void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>&
BindExplosionTextures(explosionSkinnedHandle, explosionEffectJob);
glActiveTexture(GL_TEXTURE5);
glBindTexture(GL_TEXTURE_CUBE_MAP, m_CubeMapPass->m_CubeMapTexture);
glUniform3fv(glGetUniformLocation(forwardHandle, "CameraPosition"), 1, glm::value_ptr(scene.Camera->Position()));
glUniform3fv(glGetUniformLocation(explosionSkinnedHandle, "CameraPosition"), 1, glm::value_ptr(scene.Camera->Position()));
std::vector<glm::mat4> frameBones;
if (explosionEffectJob->AnimationOffset.animation != nullptr) {
@@ -401,7 +401,7 @@ void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>&
BindExplosionTextures(explosionHandle, explosionEffectJob);
glActiveTexture(GL_TEXTURE5);
glBindTexture(GL_TEXTURE_CUBE_MAP, m_CubeMapPass->m_CubeMapTexture);
glUniform3fv(glGetUniformLocation(forwardHandle, "CameraPosition"), 1, glm::value_ptr(scene.Camera->Position()));
glUniform3fv(glGetUniformLocation(explosionHandle, "CameraPosition"), 1, glm::value_ptr(scene.Camera->Position()));
}
break;
@@ -463,7 +463,7 @@ void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>&
BindModelTextures(forwardSkinnedHandle, modelJob);
glActiveTexture(GL_TEXTURE5);
glBindTexture(GL_TEXTURE_CUBE_MAP, m_CubeMapPass->m_CubeMapTexture);
glUniform3fv(glGetUniformLocation(forwardHandle, "CameraPosition"), 1, glm::value_ptr(scene.Camera->Position()));
glUniform3fv(glGetUniformLocation(forwardSkinnedHandle, "CameraPosition"), 1, glm::value_ptr(scene.Camera->Position()));
std::vector<glm::mat4> frameBones;
if (modelJob->AnimationOffset.animation != nullptr) {
@@ -753,6 +753,7 @@ void DrawFinalPass::DrawSprites(std::list<std::shared_ptr<RenderJob>>&jobs, Rend
void DrawFinalPass::BindExplosionUniforms(GLuint shaderHandle, std::shared_ptr<ExplosionEffectJob>& job, RenderScene& scene)
{
glUniform1i(glGetUniformLocation(shaderHandle, "SSAOQuality"), m_SSAOPass->TextureQuality());
GLERROR("Bind 1 uniform");
glUniformMatrix4fv(glGetUniformLocation(shaderHandle, "M"), 1, GL_FALSE, glm::value_ptr(job->Matrix));
GLERROR("Bind 2 uniform");
@@ -801,6 +802,7 @@ void DrawFinalPass::BindExplosionUniforms(GLuint shaderHandle, std::shared_ptr<E
void DrawFinalPass::BindModelUniforms(GLuint shaderHandle, std::shared_ptr<ModelJob>& job, RenderScene& scene)
{
glUniform1i(glGetUniformLocation(shaderHandle, "SSAOQuality"), m_SSAOPass->TextureQuality());
GLERROR("Bind 1 uniform");
GLint Location_M = glGetUniformLocation(shaderHandle, "M");
glUniformMatrix4fv(Location_M, 1, GL_FALSE, glm::value_ptr(job->Matrix));
src/Engine/Rendering/FrameBuffer.cpp
+21 -21
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@@ -42,33 +42,33 @@ void FrameBuffer::Generate()
GLERROR("PRE");
std::vector<GLenum> attachments;
glGenFramebuffers(1, &m_BufferHandle);
if (m_BufferHandle == 0) {
glGenFramebuffers(1, &m_BufferHandle);
}
glBindFramebuffer(GL_FRAMEBUFFER, m_BufferHandle);
GLERROR("1");
for (auto it = m_Resources.begin(); it != m_Resources.end(); it++) {
switch ((*it)->m_ResourceType) {
case GL_TEXTURE_2D:
glFramebufferTexture2D(GL_FRAMEBUFFER, (*it)->m_Attachment, (*it)->m_ResourceType, *(*it)->m_ResourceHandle, 0);
GLERROR("FrameBuffer generate: glFramebufferTexture2D");
for (auto it = m_Resources.begin(); it != m_Resources.end(); it++) {
switch ((*it)->m_ResourceType) {
case GL_TEXTURE_2D:
glFramebufferTexture2D(GL_FRAMEBUFFER, (*it)->m_Attachment, (*it)->m_ResourceType, *(*it)->m_ResourceHandle, 0);
GLERROR("FrameBuffer generate: glFramebufferTexture2D");
break;
case GL_RENDERBUFFER:
glFramebufferRenderbuffer(GL_FRAMEBUFFER, (*it)->m_Attachment, (*it)->m_ResourceType, *(*it)->m_ResourceHandle);
GLERROR("FrameBuffer generate: glFramebufferRenderbuffer");
break;
}
GLERROR("2");
break;
case GL_RENDERBUFFER:
glFramebufferRenderbuffer(GL_FRAMEBUFFER, (*it)->m_Attachment, (*it)->m_ResourceType, *(*it)->m_ResourceHandle);
GLERROR("FrameBuffer generate: glFramebufferRenderbuffer");
break;
}
GLERROR("2");
if ((*it)->m_Attachment != GL_DEPTH_ATTACHMENT && (*it)->m_Attachment != GL_STENCIL_ATTACHMENT && (*it)->m_Attachment != GL_DEPTH_STENCIL_ATTACHMENT) {
attachments.push_back((*it)->m_Attachment);
}
GLERROR("Attachment");
}
GLERROR("3");
if ((*it)->m_Attachment != GL_DEPTH_ATTACHMENT && (*it)->m_Attachment != GL_STENCIL_ATTACHMENT && (*it)->m_Attachment != GL_DEPTH_STENCIL_ATTACHMENT) {
attachments.push_back((*it)->m_Attachment);
}
GLERROR("Attachment");
}
GLERROR("3");
GLenum* bufferTextures = &attachments[0];
glDrawBuffers(attachments.size(), bufferTextures);
src/Engine/Rendering/Renderer.cpp
+9 -4
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@@ -121,7 +121,11 @@ void Renderer::Draw(RenderFrame& frame)
ImGui::SliderFloat("SSAO IntensityScale", &m_SSAO_IntensityScale, 0.0f, 10.0f);
ImGui::SliderInt("SSAO Number of Samples", &m_SSAO_NumOfSamples, 2, 100);
ImGui::SliderInt("SSAO Number of Turns", &m_SSAO_NumOfTurns, 0, 50);
m_SSAOPass->Setting(m_SSAO_Radius, m_SSAO_Bias, m_SSAO_Contrast, m_SSAO_IntensityScale, m_SSAO_NumOfSamples, m_SSAO_NumOfTurns);
ImGui::SliderInt("SSAO Blur Iterations", &m_SSAO_iterations, 0, 20);
ImGui::SliderInt("SSAO TextureQuality", &m_SSAO_TextureQuality, 0, 4);
ImGui::SliderInt("SSAO Quality", &m_SSAO_Quality, 0, 3);
//m_SSAOPass->Setting(m_SSAO_Radius, m_SSAO_Bias, m_SSAO_Contrast, m_SSAO_IntensityScale, m_SSAO_NumOfSamples, m_SSAO_NumOfTurns, m_SSAO_iterations, m_SSAO_TextureQuality);
m_SSAOPass->ChangeQuality(m_SSAO_Quality);
GLERROR("SSAO Settings");
//clear buffer 0
glClearColor(0.f, 0.f, 0.f, 0.f);
@@ -159,7 +163,7 @@ void Renderer::Draw(RenderFrame& frame)
PerformanceTimer::StartTimerAndStopPrevious("Renderer-Light Culling");
m_LightCullingPass->CullLights(*scene);
GLERROR("LightCulling");
m_DrawFinalPass->Draw(*scene, ao);
m_DrawFinalPass->Draw(*scene);
PerformanceTimer::StartTimerAndStopPrevious("Renderer-Draw Geometry+Light");
GLERROR("Draw Geometry+Light");
//m_DrawScenePass->Draw(*scene);
@@ -248,9 +252,10 @@ void Renderer::InitializeRenderPasses()
m_PickingPass = new PickingPass(this, m_EventBroker);
m_LightCullingPass = new LightCullingPass(this);
m_CubeMapPass = new CubeMapPass(this);
m_DrawFinalPass = new DrawFinalPass(this, m_LightCullingPass, m_CubeMapPass);
m_SSAOPass = new SSAOPass(this, m_Config);
m_DrawFinalPass = new DrawFinalPass(this, m_LightCullingPass, m_CubeMapPass, m_SSAOPass);
m_DrawScreenQuadPass = new DrawScreenQuadPass(this);
m_DrawBloomPass = new DrawBloomPass(this);
m_DrawColorCorrectionPass = new DrawColorCorrectionPass(this);
m_SSAOPass = new SSAOPass(this);
}
src/Engine/Rendering/SSAOPass.cpp
+181 -29
View File
@@ -1,50 +1,134 @@
#include "Rendering/SSAOPass.h"
SSAOPass::SSAOPass(IRenderer* renderer)
SSAOPass::SSAOPass(IRenderer* renderer, ConfigFile* config)
: m_Renderer(renderer)
, m_Config(config)
{
m_Renderer = renderer;
m_WhiteTexture = CommonFunctions::LoadTexture("Textures/Core/White.png", false);
m_Quality = m_Config->Get<int>("SSAO.Quality", 0);
if (m_Quality == 0) {
return;
}
ChangeQuality(m_Quality);
}
void SSAOPass::ChangeQuality(int quality)
{
if (m_Quality == quality) {
return;
}
m_Quality = quality;
if (m_Quality == 0) {
glDeleteTextures(1, &m_SSAOTexture);
glDeleteTextures(1, &m_SSAOViewSpaceZTexture);
glDeleteTextures(1, &m_GaussianTexture_horiz);
glDeleteTextures(1, &m_GaussianTexture_vert);
return;
}
std::string qStr = std::to_string(m_Quality);
Setting(
m_Config->Get<float>("SSAO" + qStr + ".Radius", 0.01),
m_Config->Get<float>("SSAO" + qStr + ".Bias", 0.012),
m_Config->Get<float>("SSAO" + qStr + ".Contrast", 1.0),
m_Config->Get<float>("SSAO" + qStr + ".Intensity", 1.0),
m_Config->Get<int>("SSAO" + qStr + ".NumSamples", 0),
m_Config->Get<int>("SSAO" + qStr + ".NumTurns", 0),
m_Config->Get<int>("SSAO" + qStr + ".NumIterations", 0),
m_Config->Get<int>("SSAO" + qStr + ".TextureQuality", 4)
);
m_ScreenQuad = ResourceManager::Load<Model>("Models/Core/ScreenQuad.mesh");
InitializeTexture();
InitializeBuffer();
InitializeShaderProgram();
Setting(0.1f, 0.012f, 1.0f, 1.0f, 13, 7);
m_DrawBloomPass = new DrawBloomPass(renderer);
}
void SSAOPass::InitializeShaderProgram()
{
m_SSAOProgram = ResourceManager::Load<ShaderProgram>("##SSAOProgram");
m_SSAOProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/SSAO.vert.glsl")));
m_SSAOProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/SSAO.frag.glsl")));
m_SSAOProgram->Compile();
m_SSAOProgram->Link();
if (m_SSAOProgram->GetHandle() == 0) {
m_SSAOProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/SSAO.vert.glsl")));
m_SSAOProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/SSAO.frag.glsl")));
m_SSAOProgram->Compile();
m_SSAOProgram->Link();
}
m_SSAOViewSpaceZProgram = ResourceManager::Load<ShaderProgram>("##SSAOViewSpaceZProgram");
m_SSAOViewSpaceZProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/SSAO.vert.glsl")));
m_SSAOViewSpaceZProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/SSAOViewSpaceZ.frag.glsl")));
m_SSAOViewSpaceZProgram->Compile();
m_SSAOViewSpaceZProgram->Link();
if (m_SSAOViewSpaceZProgram->GetHandle() == 0) {
m_SSAOViewSpaceZProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/SSAO.vert.glsl")));
m_SSAOViewSpaceZProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/SSAOViewSpaceZ.frag.glsl")));
m_SSAOViewSpaceZProgram->Compile();
m_SSAOViewSpaceZProgram->Link();
}
m_GaussianProgram_horiz = ResourceManager::Load<ShaderProgram>("##GaussianProgramHoriz");
if (m_GaussianProgram_horiz->GetHandle() == 0) {
m_GaussianProgram_horiz->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Gaussian_horiz.vert.glsl")));
m_GaussianProgram_horiz->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Gaussian_horiz.frag.glsl")));
m_GaussianProgram_horiz->Compile();
m_GaussianProgram_horiz->Link();
}
m_GaussianProgram_vert = ResourceManager::Load<ShaderProgram>("##GaussianProgramVert");
if (m_GaussianProgram_vert->GetHandle() == 0) {
m_GaussianProgram_vert->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Gaussian_vert.vert.glsl")));
m_GaussianProgram_vert->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Gaussian_vert.frag.glsl")));
m_GaussianProgram_vert->Compile();
m_GaussianProgram_vert->Link();
}
}
void SSAOPass::InitializeTexture() {
GenerateTexture(&m_SSAOTexture, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height), GL_R8, GL_RED, GL_FLOAT);
GenerateTexture(&m_SSAOViewSpaceZTexture, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height), GL_R32F, GL_RED, GL_FLOAT);
GenerateTexture(&m_SSAOTexture, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width >> m_TextureQuality, m_Renderer->GetViewportSize().Height >> m_TextureQuality), GL_R8, GL_RED, GL_FLOAT);
GenerateTexture(&m_SSAOViewSpaceZTexture, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width >> m_TextureQuality, m_Renderer->GetViewportSize().Height >> m_TextureQuality), GL_R32F, GL_RED, GL_FLOAT);
GenerateTexture(&m_GaussianTexture_horiz, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width >> m_TextureQuality, m_Renderer->GetViewportSize().Height >> m_TextureQuality), GL_R8, GL_RGB, GL_FLOAT);
GenerateTexture(&m_GaussianTexture_vert, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width >> m_TextureQuality, m_Renderer->GetViewportSize().Height >> m_TextureQuality), GL_R8, GL_RGB, GL_FLOAT);
}
void SSAOPass::InitializeBuffer()
{
m_SSAOFramBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_SSAOTexture, GL_COLOR_ATTACHMENT0)));
m_SSAOFramBuffer.Generate();
if (m_SSAOFramBuffer.GetHandle() == 0) {
m_SSAOFramBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_SSAOTexture, GL_COLOR_ATTACHMENT0)));
}
m_SSAOFramBuffer.Generate();
if (m_SSAOViewSpaceZFramBuffer.GetHandle() == 0) {
m_SSAOViewSpaceZFramBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_SSAOViewSpaceZTexture, GL_COLOR_ATTACHMENT0)));
}
m_SSAOViewSpaceZFramBuffer.Generate();
if (m_GaussianFrameBuffer_horiz.GetHandle() == 0) {
m_GaussianFrameBuffer_horiz.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_GaussianTexture_horiz, GL_COLOR_ATTACHMENT0)));
}
m_GaussianFrameBuffer_horiz.Generate();
if (m_GaussianFrameBuffer_vert.GetHandle() == 0) {
m_GaussianFrameBuffer_vert.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_GaussianTexture_vert, GL_COLOR_ATTACHMENT0)));
}
m_GaussianFrameBuffer_vert.Generate();
m_SSAOViewSpaceZFramBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_SSAOViewSpaceZTexture, GL_COLOR_ATTACHMENT0)));
m_SSAOViewSpaceZFramBuffer.Generate();
}
void SSAOPass::ClearBuffer()
{
return;
m_SSAOFramBuffer.Bind();
glClearColor(1.f, 1.f, 1.f, 1.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -54,19 +138,32 @@ void SSAOPass::ClearBuffer()
glClearColor(1.f, 1.f, 1.f, 1.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_SSAOViewSpaceZFramBuffer.Unbind();
m_GaussianFrameBuffer_horiz.Bind();
glClearColor(1.f, 1.f, 1.f, 1.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_GaussianFrameBuffer_horiz.Unbind();
m_GaussianFrameBuffer_vert.Bind();
glClearColor(1.f, 1.f, 1.f, 1.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_GaussianFrameBuffer_vert.Unbind();
}
void SSAOPass::Setting(float radius, float bias, float contrast, float intensityScale, int numOfSamples, int NumOfTurns) {
void SSAOPass::Setting(float radius, float bias, float contrast, float intensityScale, int numOfSamples, int numOfTurns, int iterations, int quality) {
m_Radius = radius;
m_Bias = bias;
m_Contrast = contrast;
m_IntensityScale = intensityScale;
m_NumOfSamples = numOfSamples;
m_NumOfTurns = NumOfTurns;
m_NumOfTurns = numOfTurns;
m_Iterations = iterations;
m_TextureQuality = quality;
}
void SSAOPass::GenerateTexture(GLuint* texture, GLenum wrapping, GLenum filtering, glm::vec2 dimensions, GLint internalFormat, GLint format, GLenum type) const
{
glDeleteTextures(1, texture);
glGenTextures(1, texture);
glBindTexture(GL_TEXTURE_2D, *texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapping);
@@ -79,6 +176,10 @@ void SSAOPass::GenerateTexture(GLuint* texture, GLenum wrapping, GLenum filterin
void SSAOPass::Draw(GLuint depthBuffer, Camera* camera)
{
if (m_Quality == 0) {
return;
}
SSAOPassState state;
GLuint viewSpaceZPShaderHandle = m_SSAOViewSpaceZProgram->GetHandle();
GLuint SSAOShaderHandle = m_SSAOProgram->GetHandle();
@@ -98,6 +199,7 @@ void SSAOPass::Draw(GLuint depthBuffer, Camera* camera)
(-1.0f),
(+1.0f)
);*/
glViewport(0, 0, (m_Renderer->GetViewportSize().Width >> m_TextureQuality), (m_Renderer->GetViewportSize().Height >> m_TextureQuality)); //JOHAN TODO: Get this into state
glUniform3fv(glGetUniformLocation(viewSpaceZPShaderHandle, "ClipInfo"), 1, glm::value_ptr(clipInfo));
glBindVertexArray(m_ScreenQuad->VAO);
@@ -107,9 +209,9 @@ void SSAOPass::Draw(GLuint depthBuffer, Camera* camera)
glm::vec4 projInfo = glm::vec4(
((1.0 - camera->ProjectionMatrix()[0][2]) / camera->ProjectionMatrix()[0][0]),
(-2.0 / (m_Renderer->GetViewportSize().Width * camera->ProjectionMatrix()[0][0])),
(-2.0 / ((m_Renderer->GetViewportSize().Width >> m_TextureQuality) * camera->ProjectionMatrix()[0][0])),
((1.0 + camera->ProjectionMatrix()[1][2]) / camera->ProjectionMatrix()[1][1]),
(-2.0 / (m_Renderer->GetViewportSize().Height * camera->ProjectionMatrix()[1][1]))
(-2.0 / ((m_Renderer->GetViewportSize().Height >> m_TextureQuality) * camera->ProjectionMatrix()[1][1]))
);
@@ -120,26 +222,76 @@ void SSAOPass::Draw(GLuint depthBuffer, Camera* camera)
glBindTexture(GL_TEXTURE_2D, m_SSAOViewSpaceZTexture);
// How many pixel there are in a 1m long object 1m away from the camera
glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uProjScale"), m_Renderer->GetViewportSize().Height / (-2.0f * glm::tan(camera->FOV() * 0.5f)));
glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uProjScale"), (m_Renderer->GetViewportSize().Height >> m_TextureQuality) / (-2.0f * glm::tan(camera->FOV() * 0.5f)));
glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uRadius"), m_Radius);
glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uBias"), m_Bias);
glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uContrast"), m_Contrast);
glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uIntensityScale"), m_IntensityScale);
glUniform1i(glGetUniformLocation(SSAOShaderHandle, "uNumOfSamples"), m_NumOfSamples);
glUniform1i(glGetUniformLocation(SSAOShaderHandle, "uNumOfTurns"), m_NumOfTurns);;
glUniform1i(glGetUniformLocation(SSAOShaderHandle, "uNumOfTurns"), m_NumOfTurns);
glUniform4fv(glGetUniformLocation(SSAOShaderHandle, "uProjInfo"), 1, glm::value_ptr(projInfo));
glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex + 1
, GL_UNSIGNED_INT, 0, m_ScreenQuad->MaterialGroups()[0].material->StartIndex);
m_DrawBloomPass->ClearBuffer();
m_DrawBloomPass->Draw(m_SSAOTexture);
DrawBloomPassState BloomState;
GLuint shaderHandle_horiz = m_GaussianProgram_horiz->GetHandle();
GLuint shaderHandle_vert = m_GaussianProgram_vert->GetHandle();
m_GaussianFrameBuffer_horiz.Bind();
m_GaussianProgram_horiz->Bind();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_SSAOTexture);
glBindVertexArray(m_ScreenQuad->VAO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ScreenQuad->ElementBuffer);
glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex + 1
, GL_UNSIGNED_INT, 0, m_ScreenQuad->MaterialGroups()[0].material->StartIndex);
//Iterate some times to make it more gaussian.
for (int i = 1; i < m_Iterations; i++) {
//Vertical pass
m_GaussianFrameBuffer_vert.Bind();
m_GaussianProgram_vert->Bind();
glBindTexture(GL_TEXTURE_2D, m_GaussianTexture_horiz);
glBindVertexArray(m_ScreenQuad->VAO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ScreenQuad->ElementBuffer);
glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex + 1
, GL_UNSIGNED_INT, 0, m_ScreenQuad->MaterialGroups()[0].material->StartIndex);
//horizontal pass
m_GaussianFrameBuffer_horiz.Bind();
m_GaussianProgram_horiz->Bind();
glBindTexture(GL_TEXTURE_2D, m_GaussianTexture_vert);
glBindVertexArray(m_ScreenQuad->VAO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ScreenQuad->ElementBuffer);
glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex + 1
, GL_UNSIGNED_INT, 0, m_ScreenQuad->MaterialGroups()[0].material->StartIndex);
}
//final vertical gaussian after the iterations are done
m_GaussianFrameBuffer_vert.Bind();
m_GaussianProgram_vert->Bind();
glBindTexture(GL_TEXTURE_2D, m_GaussianTexture_horiz);
glBindVertexArray(m_ScreenQuad->VAO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ScreenQuad->ElementBuffer);
glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex + 1
, GL_UNSIGNED_INT, 0, m_ScreenQuad->MaterialGroups()[0].material->StartIndex);
glViewport(0, 0, (m_Renderer->GetViewportSize().Width), (m_Renderer->GetViewportSize().Height));
}
void SSAOPass::OnWindowResize() {
m_DrawBloomPass->OnWindowResize();
if (m_Quality == 0) {
return;
}
InitializeTexture();
m_SSAOFramBuffer.Generate();
m_SSAOViewSpaceZFramBuffer.Generate();
}
src/Game/Game.cpp
+1 -1
View File
@@ -54,7 +54,7 @@ Game::Game(int argc, char* argv[])
m_EventBroker = new EventBroker();
// Create the renderer
m_Renderer = new Renderer(m_EventBroker);
m_Renderer = new Renderer(m_EventBroker, m_Config);
m_Renderer->SetFullscreen(m_Config->Get<bool>("Video.Fullscreen", false));
m_Renderer->SetVSYNC(m_Config->Get<bool>("Video.VSYNC", false));
m_Renderer->SetResolution(Rectangle::Rectangle(