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for simple shadow map, cover 2 regions of the view frustum and not just one for similar quality

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This commit is contained in:
Sam Gateau 2015-01-05 13:01:21 -08:00
parent e3d474db3d
commit 0b8b4c6d08
1 changed files with 6 additions and 5 deletions
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11
interface/src/Application.cpp
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@ -2801,8 +2801,7 @@ void Application::updateShadowMap() {
glm::quat rotation = rotationBetween(IDENTITY_FRONT, lightDirection);
glm::quat inverseRotation = glm::inverse(rotation);
//const float SHADOW_MATRIX_DISTANCES[] = { 0.0f, 2.0f, 6.0f, 14.0f, 30.0f };
const float SHADOW_MATRIX_DISTANCES[] = { 1.0f, 2.5f, 5.0f, 10.0f, 20.0f };
const float SHADOW_MATRIX_DISTANCES[] = { 0.0f, 2.0f, 6.0f, 14.0f, 30.0f };
const glm::vec2 MAP_COORDS[] = { glm::vec2(0.0f, 0.0f), glm::vec2(0.5f, 0.0f),
glm::vec2(0.0f, 0.5f), glm::vec2(0.5f, 0.5f) };
@ -2821,8 +2820,10 @@ void Application::updateShadowMap() {
const glm::vec2& coord = MAP_COORDS[i];
glViewport(coord.s * fbo->width(), coord.t * fbo->height(), targetSize, targetSize);
// if simple shadow then since the resolution is twice as much as with cascaded, cover 2 regions with the map, not just one
int regionIncrement = (matrixCount == 1 ? 2 : 1);
float nearScale = SHADOW_MATRIX_DISTANCES[i] * frustumScale;
float farScale = SHADOW_MATRIX_DISTANCES[i + 1] * frustumScale;
float farScale = SHADOW_MATRIX_DISTANCES[i + regionIncrement] * frustumScale;
glm::vec3 points[] = {
glm::mix(_viewFrustum.getNearTopLeft(), _viewFrustum.getFarTopLeft(), nearScale),
glm::mix(_viewFrustum.getNearTopRight(), _viewFrustum.getFarTopRight(), nearScale),
@ -2856,8 +2857,8 @@ void Application::updateShadowMap() {
glm::vec3 maxima(center.x + radius, center.y + radius, center.z + radius);
// stretch out our extents in z so that we get all of the avatars
// minima.z -= _viewFrustum.getFarClip() * 0.5f;
// maxima.z += _viewFrustum.getFarClip() * 0.5f;
minima.z -= _viewFrustum.getFarClip() * 0.5f;
maxima.z += _viewFrustum.getFarClip() * 0.5f;
// save the combined matrix for rendering
_shadowMatrices[i] = glm::transpose(glm::translate(glm::vec3(coord, 0.0f)) *