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Split screen working

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This commit is contained in:
sippeangelo
2014-05-19 17:20:43 +02:00
parent e07a0a2b1a
commit bd7ba73bca
7 changed files with 184 additions and 115 deletions
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src/Renderer.cpp
+91 -59
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@@ -636,77 +636,90 @@ void Renderer::DrawFBO()
{
DrawShadowMap();
/*
for (auto &pair : m_Viewports)
{
Viewport &viewport = pair.second;
if (!viewport.Camera)
continue;
int x = viewport.Left * m_Width;
int y = viewport.Top * m_Height;
int width = (viewport.Right - viewport.Left) * m_Width;
int height = (viewport.Bottom - viewport.Top) * m_Height;
/*
Base pass
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbBasePass);
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbBasePass);
glViewport(0, 0, m_Width, m_Height);
// Clear G-buffer
GLenum windowBuffClear[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
glDrawBuffers(3, windowBuffClear);
glClearColor(0.f, 0.f, 0.f, 0.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Clear G-buffer
GLenum windowBuffClear[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
glDrawBuffers(3, windowBuffClear);
glClearColor(0.f, 0.f, 0.f, 0.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Execute the first render stage which will fill out the internal buffers with data(??)
m_FirstPassProgram.Bind();
GLenum windowBuffOpaque[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
glDrawBuffers(3, windowBuffOpaque);
// Execute the first render stage which will fill out the internal buffers with data(??)
m_FirstPassProgram.Bind();
GLenum windowBuffOpaque[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
glDrawBuffers(3, windowBuffOpaque);
glCullFace(GL_BACK);
glCullFace(GL_BACK);
DrawFBOScene(viewport);
glViewport(0, 0, m_Width, m_Height);
DrawFBOScene();
/*
/*
Lighting pass
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbLightingPass);
GLenum lightingPassAttachments[] = { GL_COLOR_ATTACHMENT0 };
glDrawBuffers(1, lightingPassAttachments);
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbLightingPass);
GLenum lightingPassAttachments[] = { GL_COLOR_ATTACHMENT0 };
glDrawBuffers(1, lightingPassAttachments);
glClearColor(0.f, 0.f, 0.f, 0.f);
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(0.f, 0.f, 0.f, 0.f);
glClear(GL_COLOR_BUFFER_BIT);
m_SecondPassProgram.Bind();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_fPositionTexture);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, m_fNormalsTexture);
m_SecondPassProgram.Bind();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_fPositionTexture);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, m_fNormalsTexture);
glCullFace(GL_FRONT);
DrawLightScene();
glCullFace(GL_FRONT);
DrawLightScene(viewport);
/*
/*
Final pass
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glViewport(x, y, width, height);
glClear(GL_DEPTH_BUFFER_BIT);
m_FinalPassProgram.Bind();
m_FinalPassProgram.Bind();
// Ambient light
glUniform3fv(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "La"), 1, glm::value_ptr(glm::vec3(0.1f, 0.1f, 0.1f)));
glUniform1f(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "Gamma"), Gamma);
// Ambient light
glUniform3fv(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "La"), 1, glm::value_ptr(glm::vec3(0.1f, 0.1f, 0.1f)));
glUniform1f(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "Gamma"), Gamma);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_fDiffuseTexture);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, m_fLightingTexture);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_fDiffuseTexture);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, m_fLightingTexture);
glCullFace(GL_BACK);
glBindVertexArray(m_ScreenQuad);
glEnableVertexAttribArray(0);
glDrawArrays(GL_TRIANGLES, 0, 6);
glCullFace(GL_BACK);
glBindVertexArray(m_ScreenQuad);
glEnableVertexAttribArray(0);
glDrawArrays(GL_TRIANGLES, 0, 6);
}
}
void Renderer::DrawFBOScene()
void Renderer::DrawFBOScene(Viewport &viewport)
{
// glEnable(GL_DEPTH_TEST);//Tests where objects are and display them correctly
// glEnable(GL_CULL_FACE); //removes triangles on the wrong side of the object
// glCullFace(GL_BACK); //Make it so that only the back faces are rendered
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); //Draws filled polygons
glm::mat4 cameraMatrix = m_Camera->ProjectionMatrix() * m_Camera->ViewMatrix();
glm::mat4 cameraMatrix = viewport.Camera->ProjectionMatrix() * viewport.Camera->ViewMatrix();
glm::mat4 MVP;
glm::mat4 biasMatrix(
0.5, 0.0, 0.0, 0.0,
@@ -737,8 +750,8 @@ void Renderer::DrawFBOScene()
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "DepthMVP"), 1, GL_FALSE, glm::value_ptr(depthMVP));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "M"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(m_Camera->ProjectionMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(viewport.Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(viewport.Camera->ProjectionMatrix()));
glBindVertexArray(model->VAO);
for (auto texGroup : model->TextureGroups)
{
@@ -767,8 +780,8 @@ void Renderer::DrawFBOScene()
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "DepthMVP"), 1, GL_FALSE, glm::value_ptr(depthMVP));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "M"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(m_Camera->ProjectionMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(viewport.Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(viewport.Camera->ProjectionMatrix()));
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, *texture);
@@ -779,7 +792,7 @@ void Renderer::DrawFBOScene()
void Renderer::DrawLightScene()
void Renderer::DrawLightScene(Viewport &viewport)
{
glEnable(GL_BLEND);
glBlendEquation (GL_FUNC_ADD);
@@ -789,7 +802,7 @@ void Renderer::DrawLightScene()
glDepthMask (GL_FALSE);
glBindVertexArray(m_sphereModel->VAO);
glm::mat4 cameraMatrix = m_Camera->ProjectionMatrix() * m_Camera->ViewMatrix();
glm::mat4 cameraMatrix = viewport.Camera->ProjectionMatrix() * viewport.Camera->ViewMatrix();
glm::mat4 MVP;
for (auto &light : Lights)
@@ -798,13 +811,13 @@ void Renderer::DrawLightScene()
glUniform2fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "ViewportSize"), 1,glm::value_ptr(glm::vec2(m_Width, m_Height)));
glUniformMatrix4fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
glUniformMatrix4fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(m_Camera->ProjectionMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(viewport.Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(viewport.Camera->ProjectionMatrix()));
glUniformMatrix4fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "M"), 1, GL_FALSE, glm::value_ptr(light.SphereModelMatrix));
glUniform3fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "ls"), 1, glm::value_ptr(light.Specular));
glUniform3fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "ld"), 1, glm::value_ptr(light.Diffuse));
glUniform3fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "lp"), 1, glm::value_ptr(light.Position));
glUniform3f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "CameraPosition"), m_Camera->Position().x, m_Camera->Position().y, m_Camera->Position().z);
glUniform3f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "CameraPosition"), viewport.Camera->Position().x, viewport.Camera->Position().y, viewport.Camera->Position().z);
glUniform1f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "specularExponent"), light.SpecularExponent);
// glUniform1f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "ConstantAttenuation"), light.ConstantAttenuation);
// glUniform1f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "LinearAttenuation"), light.LinearAttenuation);
@@ -868,16 +881,35 @@ void Renderer::UpdateSunProjection()
//Pass the bounding box's extents to glOrtho or similar to set up the orthographic projection matrix for the shadow map.
}
void Renderer::CreateViewport(int identifier, float left, float top, float right, float bottom)
void Renderer::RegisterViewport(int identifier, float left, float top, float right, float bottom)
{
Viewport v;
v.Left = left;
v.Top = top;
v.Right = right;
v.Bottom = bottom;
v.Camera = nullptr;
m_Viewports[identifier] = v;
}
void Renderer::RegisterCamera(int identifier, float FOV, float nearClip, float farClip)
{
m_Cameras[identifier] = std::make_shared<Camera>(FOV, (float)m_Width / m_Height, nearClip, farClip);
}
void Renderer::UpdateViewport(int viewportIdentifier, int cameraIdentifier)
{
auto &viewport = m_Viewports[viewportIdentifier];
auto camera = m_Cameras[cameraIdentifier];
camera->AspectRatio(((viewport.Right - viewport.Left) * m_Width) / ((viewport.Bottom - viewport.Top) * m_Height));
viewport.Camera = camera;
}
void Renderer::UpdateCamera(int cameraIdentifier, glm::vec3 position, glm::quat orientation, float FOV, float nearClip, float farClip)
{
m_Cameras[cameraIdentifier]->Position(position);
m_Cameras[cameraIdentifier]->Orientation(orientation);
m_Cameras[cameraIdentifier]->FOV(FOV);
m_Cameras[cameraIdentifier]->NearClip(nearClip);
m_Cameras[cameraIdentifier]->FarClip(farClip);
}