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-rw-r--r--gfx/gl/sceneRenderer.cpp20
-rw-r--r--gfx/gl/shadowMapper.cpp5
-rw-r--r--gfx/gl/shadowStenciller.cpp1
3 files changed, 20 insertions, 6 deletions
diff --git a/gfx/gl/sceneRenderer.cpp b/gfx/gl/sceneRenderer.cpp
index e0938f2..7aace49 100644
--- a/gfx/gl/sceneRenderer.cpp
+++ b/gfx/gl/sceneRenderer.cpp
@@ -62,7 +62,7 @@ SceneRenderer::render(const SceneProvider & scene) const
shader.setViewProjection(camera.getPosition(), camera.getViewProjection());
glViewport(0, 0, size.x, size.y);
- // Geometry pass
+ // Geometry/colour pass - writes albedo, normal and position textures
glBindFramebuffer(GL_FRAMEBUFFER, gBuffer);
glEnable(GL_BLEND);
glEnable(GL_CULL_FACE);
@@ -73,7 +73,13 @@ SceneRenderer::render(const SceneProvider & scene) const
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
scene.content(shader);
- // Illumination pass
+ // Environment pass -
+ // * ambient - clears illumination texture - see setAmbientLight
+ // * directional - updates shadowMapper, reads normal and position, writes illumination - see setDirectionalLight
+ scene.environment(shader, *this);
+
+ // Scene lights pass -
+ // * per light - reads normal and position, writes illumination
glBindFramebuffer(GL_FRAMEBUFFER, gBufferIll);
glBlendFunc(GL_ONE, GL_ONE);
glActiveTexture(GL_TEXTURE0);
@@ -82,11 +88,10 @@ SceneRenderer::render(const SceneProvider & scene) const
glBindTexture(GL_TEXTURE_2D, gNormal);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D_ARRAY, shadowMapper);
- scene.environment(shader, *this);
glDisable(GL_DEPTH_TEST);
scene.lights(shader);
- // Lighting pass
+ // Composition pass - reads albedo and illumination, writes output
glBindFramebuffer(GL_FRAMEBUFFER, output);
glViewport(0, 0, size.x, size.y);
glCullFace(GL_BACK);
@@ -114,6 +119,13 @@ SceneRenderer::setDirectionalLight(const RGB & colour, const Direction3D & direc
if (colour.r > 0 || colour.g > 0 || colour.b > 0) {
const auto lvp = shadowMapper.update(scene, direction, camera);
glBindFramebuffer(GL_FRAMEBUFFER, gBufferIll);
+ glBlendFunc(GL_ONE, GL_ONE);
+ glActiveTexture(GL_TEXTURE0);
+ glBindTexture(GL_TEXTURE_2D, gPosition);
+ glActiveTexture(GL_TEXTURE1);
+ glBindTexture(GL_TEXTURE_2D, gNormal);
+ glActiveTexture(GL_TEXTURE2);
+ glBindTexture(GL_TEXTURE_2D_ARRAY, shadowMapper);
glViewport(0, 0, size.x, size.y);
dirLight.use();
dirLight.setDirectionalLight(colour, direction, camera.getPosition(), lvp);
diff --git a/gfx/gl/shadowMapper.cpp b/gfx/gl/shadowMapper.cpp
index 9b9e404..ff0634e 100644
--- a/gfx/gl/shadowMapper.cpp
+++ b/gfx/gl/shadowMapper.cpp
@@ -77,15 +77,18 @@ ShadowMapper::getBandViewExtents(const Camera & camera, const glm::mat4 & lightV
ShadowMapper::Definitions
ShadowMapper::update(const SceneProvider & scene, const Direction3D & dir, const Camera & camera) const
{
+ glCullFace(GL_FRONT);
+ glEnable(GL_DEPTH_TEST);
+
ShadowStenciller shadowStenciller {dir, up};
for (const auto & [id, asset] : gameState->assets) {
if (const auto r = std::dynamic_pointer_cast<const Renderable>(asset)) {
r->updateStencil(shadowStenciller);
}
}
+
glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
glClear(GL_DEPTH_BUFFER_BIT);
- glCullFace(GL_FRONT);
glViewport(0, 0, size.x, size.y);
const auto lightViewDir = glm::lookAt({}, dir, up);
diff --git a/gfx/gl/shadowStenciller.cpp b/gfx/gl/shadowStenciller.cpp
index 9f13808..fc3d77c 100644
--- a/gfx/gl/shadowStenciller.cpp
+++ b/gfx/gl/shadowStenciller.cpp
@@ -45,7 +45,6 @@ ShadowStenciller::renderStencil(const glTexture & stencil, const MeshBase & mesh
glUseProgram(shadowCaster);
glClear(GL_DEPTH_BUFFER_BIT);
glViewport(0, 0, 256, 256);
- glEnable(GL_DEPTH_TEST);
const auto & centre = mesh.getDimensions().centre;
const auto & size = mesh.getDimensions().size;
const auto extentsMat