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begin fixing transparent object's shadows

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This commit is contained in:
FakeShemp
2016-02-27 18:42:51 +01:00
parent 8647267cad
commit 14b0a64720
7 changed files with 51 additions and 44 deletions
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src/Engine/Rendering/ShadowPass.cpp
+29 -15
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@@ -53,7 +53,7 @@ void ShadowPass::UpdateSplitDist(std::array<Frustum, MAX_SPLITS>& frusta, float
void ShadowPass::UpdateFrustumPoints(Frustum& frustum, glm::mat4 p, glm::mat4 v)
{
std::array<glm::vec4, 8> CornerPoint = {
std::array<glm::vec4, 8> CornerPoint = {
glm::vec4(-1.f, -1.f, -1.f, 1.f),
glm::vec4(-1.f, 1.f, -1.f, 1.f),
glm::vec4(1.f, 1.f, -1.f, 1.f),
@@ -81,7 +81,7 @@ void ShadowPass::UpdateFrustumPoints(Frustum& frustum, glm::vec3 camera_position
glm::vec3 near_center = camera_position + glm::normalize(view_dir) * frustum.NearClip;
frustum.MiddlePoint = near_center + (far_center - near_center) * 0.5f;
up = glm::normalize(glm::cross(right, view_dir));
up = glm::normalize(glm::cross(right, view_dir));
// these heights and widths are half the heights and widths of the near and far plane rectangles.
float near_height = tan(frustum.FOV / 2.f) * frustum.NearClip;
@@ -118,7 +118,7 @@ float ShadowPass::FindRadius(Frustum& frustum)
void ShadowPass::InitializeFrameBuffers()
{
// Depth texture
glGenTextures(1, &m_DepthMap);
glGenTextures(1, &m_DepthMap);
glBindTexture(GL_TEXTURE_2D_ARRAY, m_DepthMap);
glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_DEPTH_COMPONENT16, m_ResolutionSizeWidth, m_ResolutionSizeHeight, m_CurrentNrOfSplits);
@@ -136,17 +136,17 @@ void ShadowPass::InitializeFrameBuffers()
m_DepthBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2DArray(&m_DepthMap, GL_DEPTH_ATTACHMENT, m_CurrentNrOfSplits)));
m_DepthBuffer.Generate();
GLERROR("depthMap failed END");
GLERROR("depthMap failed END");
}
void ShadowPass::InitializeShaderPrograms()
{
m_ShadowProgram = ResourceManager::Load<ShaderProgram>("#ShadowProgram");
m_ShadowProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Shadow.vert.glsl")));
m_ShadowProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Shadow.frag.glsl")));
m_ShadowProgram->Compile();
m_ShadowProgram->BindFragDataLocation(0, "ShadowMap");
m_ShadowProgram->Link();
m_ShadowProgram = ResourceManager::Load<ShaderProgram>("#ShadowProgram");
m_ShadowProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Shadow.vert.glsl")));
m_ShadowProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Shadow.frag.glsl")));
m_ShadowProgram->Compile();
m_ShadowProgram->BindFragDataLocation(0, "ShadowMap");
m_ShadowProgram->Link();
}
void ShadowPass::ClearBuffer()
@@ -155,7 +155,7 @@ void ShadowPass::ClearBuffer()
for (int i = 0; i < m_CurrentNrOfSplits; i++) {
glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, m_DepthMap, 0, i);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
@@ -187,7 +187,7 @@ void ShadowPass::RadiusToLightspace(Frustum& frustum)
float left = -frustum.Radius;
float right = frustum.Radius;
float bottom = -frustum.Radius;
float top =frustum.Radius;
float top = frustum.Radius;
frustum.LRBT = { left, right, bottom, top };
}
@@ -198,7 +198,7 @@ void ShadowPass::Draw(RenderScene & scene)
InitializeCameras(scene);
UpdateSplitDist(m_shadowFrusta, scene.Camera->NearClip(), scene.Camera->FarClip());
ShadowPassState* state = new ShadowPassState(m_DepthBuffer.GetHandle());
m_ShadowProgram->Bind();
@@ -207,9 +207,9 @@ void ShadowPass::Draw(RenderScene & scene)
for (int i = 0; i < m_CurrentNrOfSplits; i++) {
UpdateFrustumPoints(m_shadowFrusta[i], scene.Camera->Position(), scene.Camera->Forward());
glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, m_DepthMap, 0, i);
for (auto &job : scene.DirectionalLightJobs) {
auto directionalLightJob = std::dynamic_pointer_cast<DirectionalLightJob>(job);
@@ -235,6 +235,20 @@ void ShadowPass::Draw(RenderScene & scene)
GLERROR("Shadow Draw ERROR");
}
state->CullFace(GL_BACK);
for (auto &objectJob : scene.TransparentObjects) {
auto modelJob = std::dynamic_pointer_cast<ModelJob>(objectJob);
glUniformMatrix4fv(glGetUniformLocation(shaderHandle, "M"), 1, GL_FALSE, glm::value_ptr(modelJob->Matrix));
glBindVertexArray(modelJob->Model->VAO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, modelJob->Model->ElementBuffer);
glDrawElements(GL_TRIANGLES, modelJob->EndIndex - modelJob->StartIndex + 1, GL_UNSIGNED_INT, (void*)(modelJob->StartIndex * sizeof(unsigned int)));
GLERROR("Shadow Draw ERROR");
}
state->CullFace(GL_FRONT);
}
}
}