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SSAO now have outcommented code for MipMaps. I couldn't see any gain from having mipmaps. But it's there if some one wants to try

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This commit is contained in:
Teejoon
2016-02-24 11:26:06 +01:00
parent 09aec08d0e
commit 06ea99a769
4 changed files with 170 additions and 36 deletions
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src/Engine/Rendering/SSAOPass.cpp
+26 -16
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@@ -31,12 +31,28 @@ void SSAOPass::InitializeShaderProgram()
void SSAOPass::InitializeBuffer()
{
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);
glGenTextures(1, &m_SSAOTexture);
glBindTexture(GL_TEXTURE_2D, m_SSAOTexture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height, 0, GL_RED, GL_FLOAT, nullptr);
m_SSAOFramBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_SSAOTexture, GL_COLOR_ATTACHMENT0)));
m_SSAOFramBuffer.Generate();
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);
glGenTextures(1, &m_SSAOViewSpaceZTexture);
glBindTexture(GL_TEXTURE_2D, m_SSAOViewSpaceZTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R32F, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height, 0, GL_RED, GL_FLOAT, nullptr);
//glTexStorage2D(GL_TEXTURE_2D, MAX_MIP_LEVEL, GL_R32F, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height);;
//glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height, GL_RED, GL_FLOAT, nullptr);
//glGenerateMipmap(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
//glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
m_SSAOViewSpaceZFramBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_SSAOViewSpaceZTexture, GL_COLOR_ATTACHMENT0)));
m_SSAOViewSpaceZFramBuffer.Generate();
@@ -45,12 +61,12 @@ void SSAOPass::InitializeBuffer()
void SSAOPass::ClearBuffer()
{
m_SSAOFramBuffer.Bind();
glClearColor(0.f, 0.f, 0.f, 0.f);
glClearColor(1.f, 1.f, 1.f, 1.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_SSAOFramBuffer.Unbind();
m_SSAOViewSpaceZFramBuffer.Bind();
glClearColor(0.f, 0.f, 0.f, 0.f);
glClearColor(1.f, 1.f, 1.f, 1.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_SSAOViewSpaceZFramBuffer.Unbind();
}
@@ -64,17 +80,6 @@ void SSAOPass::Setting(float radius, float bias, float contrast, float intensity
m_NumOfTurns = NumOfTurns;
}
void SSAOPass::GenerateTexture(GLuint* texture, GLenum wrapping, GLenum filtering, glm::vec2 dimensions, GLint internalFormat, GLint format, GLenum type) const
{
glGenTextures(1, texture);
glBindTexture(GL_TEXTURE_2D, *texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapping);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapping);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, dimensions.x, dimensions.y, 0, format, type, nullptr);
GLERROR("Texture initialization failed");
}
void SSAOPass::Draw(GLuint depthBuffer, Camera* camera)
{
@@ -111,6 +116,11 @@ void SSAOPass::Draw(GLuint depthBuffer, Camera* camera)
(-2.0 / (m_Renderer->GetViewportSize().Height * camera->ProjectionMatrix()[1][1]))
);
m_SSAOViewSpaceZFramBuffer.Unbind();
//glBindTexture(GL_TEXTURE_2D, m_SSAOViewSpaceZTexture);
//glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height, GL_RED, GL_FLOAT, &m_SSAOViewSpaceZTexture);
//glGenerateMipmap(GL_TEXTURE_2D);
m_SSAOFramBuffer.Bind();
m_SSAOProgram->Bind();
@@ -119,7 +129,7 @@ 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 / (2.0f * glm::tan(glm::radians(camera->FOV() * 0.5f))));
glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uRadius"), m_Radius);
glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uBias"), m_Bias);