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More progress on shadows.

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This commit is contained in:
Andrzej Kapolka 2013-11-20 18:27:59 -08:00
parent 5cc5d9bba8
commit 4bcc6fdc0d
4 changed files with 36 additions and 4 deletions
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5
interface/src/Application.cpp
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@ -2796,6 +2796,11 @@ void Application::updateShadowMap() {
maxima = glm::max(maxima, points[i]);
}
// save the combined matrix for rendering
_shadowMatrix = glm::transpose(glm::translate(0.5f, 0.5f, 0.5f) * glm::scale(0.5f, 0.5f, 0.5f) *
glm::ortho(minima.x, maxima.x, minima.y, maxima.y, -maxima.z, -minima.z) *
glm::mat4_cast(rotation) * glm::translate(translation));
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();

4
interface/src/Application.h
View file

@ -156,6 +156,8 @@ public:
/// result from matrix multiplication at high translation magnitudes.
void loadTranslatedViewMatrix(const glm::vec3& translation);
const glm::mat4& getShadowMatrix() const { return _shadowMatrix; }
/// Computes the off-axis frustum parameters for the view frustum, taking mirroring into account.
void computeOffAxisFrustum(float& left, float& right, float& bottom, float& top, float& near,
float& far, glm::vec4& nearClipPlane, glm::vec4& farClipPlane) const;
@ -350,6 +352,8 @@ private:
glm::mat4 _untranslatedViewMatrix;
glm::vec3 _viewMatrixTranslation;
glm::mat4 _shadowMatrix;
Environment _environment;
int _headMouseX, _headMouseY;

27
interface/src/VoxelSystem.cpp
View file

@ -1386,20 +1386,39 @@ void VoxelSystem::render(bool texture) {
}
void VoxelSystem::applyScaleAndBindProgram(bool texture) {
glPushMatrix();
glScalef(_treeScale, _treeScale, _treeScale);
if (texture) {
if (Menu::getInstance()->isOptionChecked(MenuOption::Shadows)) {
glBindTexture(GL_TEXTURE_2D, Application::getInstance()->getTextureCache()->getShadowDepthTextureID());
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
glEnable(GL_TEXTURE_GEN_R);
glEnable(GL_TEXTURE_2D);
glTexGenfv(GL_S, GL_EYE_PLANE, (const GLfloat*)&Application::getInstance()->getShadowMatrix()[0]);
glTexGenfv(GL_T, GL_EYE_PLANE, (const GLfloat*)&Application::getInstance()->getShadowMatrix()[1]);
glTexGenfv(GL_R, GL_EYE_PLANE, (const GLfloat*)&Application::getInstance()->getShadowMatrix()[2]);
} else if (texture) {
_perlinModulateProgram.bind();
glBindTexture(GL_TEXTURE_2D, Application::getInstance()->getTextureCache()->getPermutationNormalTextureID());
}
glPushMatrix();
glScalef(_treeScale, _treeScale, _treeScale);
}
void VoxelSystem::removeScaleAndReleaseProgram(bool texture) {
// scale back down to 1 so heads aren't massive
glPopMatrix();
if (texture) {
if (Menu::getInstance()->isOptionChecked(MenuOption::Shadows)) {
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
glDisable(GL_TEXTURE_GEN_R);
glDisable(GL_TEXTURE_2D);
} else if (texture) {
_perlinModulateProgram.release();
glBindTexture(GL_TEXTURE_2D, 0);
}

4
interface/src/renderer/TextureCache.cpp
View file

@ -192,6 +192,10 @@ QOpenGLFramebufferObject* TextureCache::getShadowFramebufferObject() {
0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
const float DISTANT_BORDER[] = { 1.0f, 1.0f, 1.0f, 1.0f };
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, DISTANT_BORDER);
glBindTexture(GL_TEXTURE_2D, 0);
_shadowFramebufferObject->bind();