GLColorBuffer GLLensDustFilter::GaussianBlur(GLColorBuffer tex, bool vertical) {
SPADES_MARK_FUNCTION();
GLProgram *program = gauss1d;
IGLDevice *dev = renderer->GetGLDevice();
GLQuadRenderer qr(dev);
int w = tex.GetWidth();
int h = tex.GetHeight();
static GLProgramAttribute blur_positionAttribute("positionAttribute");
static GLProgramUniform blur_textureUniform("mainTexture");
static GLProgramUniform blur_unitShift("unitShift");
program->Use();
blur_positionAttribute(program);
blur_textureUniform(program);
blur_textureUniform.SetValue(0);
dev->ActiveTexture(0);
dev->BindTexture(IGLDevice::Texture2D, tex.GetTexture());
blur_unitShift(program);
blur_unitShift.SetValue(vertical ? 0.f : 1.f / w,
vertical ? 1.f / h : 0.f);
qr.SetCoordAttributeIndex(blur_positionAttribute());
dev->Enable(IGLDevice::Blend, false);
GLColorBuffer buf2 = renderer->GetFramebufferManager()->CreateBufferHandle(w, h, false);
dev->Viewport(0, 0, buf2.GetWidth(), buf2.GetHeight());
dev->BindFramebuffer(IGLDevice::Framebuffer, buf2.GetFramebuffer());
qr.Draw();
return buf2;
}
GLColorBuffer GLDepthOfFieldFilter::Blur(GLColorBuffer buffer,
GLColorBuffer coc,
Vector2 offset,
int divide) {
SPADES_MARK_FUNCTION();
// do gaussian blur
GLProgram *program = blurProgram;
IGLDevice *dev = renderer->GetGLDevice();
GLQuadRenderer qr(dev);
int w = buffer.GetWidth();
int h = buffer.GetHeight();
int w2 = w / divide;
int h2 = h / divide;
static GLProgramAttribute blur_positionAttribute("positionAttribute");
static GLProgramUniform blur_textureUniform("texture");
static GLProgramUniform blur_cocUniform("cocTexture");
static GLProgramUniform blur_offset("offset");
program->Use();
blur_positionAttribute(program);
blur_textureUniform(program);
blur_cocUniform(program);
blur_offset(program);
blur_cocUniform.SetValue(1);
dev->ActiveTexture(1);
dev->BindTexture(IGLDevice::Texture2D, coc.GetTexture());
blur_textureUniform.SetValue(0);
dev->ActiveTexture(0);
qr.SetCoordAttributeIndex(blur_positionAttribute());
// x-direction
float len = offset.GetLength();
float sX = 1.f / (float)w, sY = 1.f / (float)h;
while(len > .5f){
GLColorBuffer buf2 = renderer->GetFramebufferManager()->CreateBufferHandle(w2, h2, false);
dev->BindFramebuffer(IGLDevice::Framebuffer, buf2.GetFramebuffer());
dev->BindTexture(IGLDevice::Texture2D, buffer.GetTexture());
blur_offset.SetValue(offset.x * sX, offset.y * sY);
qr.Draw();
buffer = buf2;
offset *= .125f;
len *= .125f;
}
return buffer;
}
GLColorBuffer GLDepthOfFieldFilter::FinalMix(GLColorBuffer tex,
GLColorBuffer blur1,
GLColorBuffer blur2,
GLColorBuffer coc) {
SPADES_MARK_FUNCTION();
// do gaussian blur
GLProgram *program = finalMix;
IGLDevice *dev = renderer->GetGLDevice();
GLQuadRenderer qr(dev);
int w = tex.GetWidth();
int h = tex.GetHeight();
static GLProgramAttribute blur_positionAttribute("positionAttribute");
static GLProgramUniform blur_textureUniform1("texture");
static GLProgramUniform blur_textureUniform2("blurTexture1");
static GLProgramUniform blur_textureUniform3("blurTexture2");
static GLProgramUniform blur_textureUniform4("cocTexture");
program->Use();
blur_positionAttribute(program);
blur_textureUniform1(program);
blur_textureUniform1.SetValue(3);
dev->ActiveTexture(3);
dev->BindTexture(IGLDevice::Texture2D, tex.GetTexture());
blur_textureUniform2(program);
blur_textureUniform2.SetValue(2);
dev->ActiveTexture(2);
dev->BindTexture(IGLDevice::Texture2D, blur1.GetTexture());
blur_textureUniform3(program);
blur_textureUniform3.SetValue(1);
dev->ActiveTexture(1);
dev->BindTexture(IGLDevice::Texture2D, blur2.GetTexture());
blur_textureUniform4(program);
blur_textureUniform4.SetValue(0);
dev->ActiveTexture(0);
dev->BindTexture(IGLDevice::Texture2D, coc.GetTexture());
qr.SetCoordAttributeIndex(blur_positionAttribute());
dev->Enable(IGLDevice::Blend, false);
// x-direction
GLColorBuffer buf2 = renderer->GetFramebufferManager()->CreateBufferHandle(w, h, false);
dev->BindFramebuffer(IGLDevice::Framebuffer, buf2.GetFramebuffer());
qr.Draw();
return buf2;
}
GLColorBuffer GLLensDustFilter::DownSample(GLColorBuffer tex,
bool linearize) {
SPADES_MARK_FUNCTION();
GLProgram *program = thru;
IGLDevice *dev = renderer->GetGLDevice();
GLQuadRenderer qr(dev);
int w = tex.GetWidth();
int h = tex.GetHeight();
static GLProgramAttribute blur_positionAttribute("positionAttribute");
static GLProgramUniform blur_textureUniform("mainTexture");
static GLProgramUniform blur_colorUniform("colorUniform");
static GLProgramUniform blur_texCoordRangeUniform("texCoordRange");
static GLProgramUniform blur_texCoordOffsetUniform("texCoordOffset");
program->Use();
blur_positionAttribute(program);
blur_textureUniform(program);
blur_textureUniform.SetValue(0);
dev->ActiveTexture(0);
dev->BindTexture(IGLDevice::Texture2D, tex.GetTexture());
blur_texCoordOffsetUniform(program);
blur_texCoordOffsetUniform.SetValue(1.f / w, 1.f / h, -1.f / w, -1.f / h);
blur_colorUniform(program);
blur_colorUniform.SetValue(1.f,1.f,1.f,1.f);
blur_texCoordRangeUniform(program);
blur_texCoordRangeUniform.SetValue(0.f, 0.f,
(float)((w + 1) & ~1) / w,
(float)((h + 1) & ~1) / h);
qr.SetCoordAttributeIndex(blur_positionAttribute());
if(linearize){
dev->Enable(IGLDevice::Blend, true);
dev->BlendFunc(IGLDevice::SrcColor,
IGLDevice::Zero);
}else{
dev->Enable(IGLDevice::Blend, false);
}
GLColorBuffer buf2 = renderer->GetFramebufferManager()->CreateBufferHandle((w+1)/2, (h+1)/2, false);
dev->Viewport(0, 0, buf2.GetWidth(), buf2.GetHeight());
dev->BindFramebuffer(IGLDevice::Framebuffer, buf2.GetFramebuffer());
qr.Draw();
return buf2;
}
GLColorBuffer GLDepthOfFieldFilter::AddMix(GLColorBuffer buffer1, GLColorBuffer buffer2) {
SPADES_MARK_FUNCTION();
// do gaussian blur
GLProgram *program = gammaMix;
IGLDevice *dev = renderer->GetGLDevice();
GLQuadRenderer qr(dev);
int w = buffer1.GetWidth();
int h = buffer1.GetHeight();
static GLProgramAttribute blur_positionAttribute("positionAttribute");
static GLProgramUniform blur_textureUniform1("texture1");
static GLProgramUniform blur_textureUniform2("texture2");
static GLProgramUniform blur_unitShift("unitShift");
static GLProgramUniform blur_mix1("mix1");
static GLProgramUniform blur_mix2("mix2");
program->Use();
blur_positionAttribute(program);
blur_textureUniform1(program);
blur_textureUniform1.SetValue(1);
dev->ActiveTexture(1);
dev->BindTexture(IGLDevice::Texture2D, buffer1.GetTexture());
blur_textureUniform2(program);
blur_textureUniform2.SetValue(0);
dev->ActiveTexture(0);
dev->BindTexture(IGLDevice::Texture2D, buffer2.GetTexture());
blur_mix1(program);
blur_mix2(program);
blur_mix1.SetValue(.5f, .5f, .5f);
blur_mix2.SetValue(.5f, .5f, .5f);
qr.SetCoordAttributeIndex(blur_positionAttribute());
dev->Enable(IGLDevice::Blend, false);
// x-direction
GLColorBuffer buf2 = renderer->GetFramebufferManager()->CreateBufferHandle(w, h, false);
dev->BindFramebuffer(IGLDevice::Framebuffer, buf2.GetFramebuffer());
qr.Draw();
return buf2;
}
GLColorBuffer GLDepthOfFieldFilter::UnderSample(GLColorBuffer tex) {
SPADES_MARK_FUNCTION();
// do gaussian blur
GLProgram *program = passthrough;
IGLDevice *dev = renderer->GetGLDevice();
GLQuadRenderer qr(dev);
int w = tex.GetWidth();
int h = tex.GetHeight();
static GLProgramAttribute blur_positionAttribute("positionAttribute");
static GLProgramUniform blur_textureUniform("texture");
static GLProgramUniform blur_colorUniform("colorUniform");
static GLProgramUniform blur_texCoordRangeUniform("texCoordRange");
program->Use();
blur_positionAttribute(program);
blur_textureUniform(program);
blur_textureUniform.SetValue(0);
dev->ActiveTexture(0);
dev->BindTexture(IGLDevice::Texture2D, tex.GetTexture());
blur_colorUniform(program);
blur_colorUniform.SetValue(1.f,1.f,1.f,1.f);
blur_texCoordRangeUniform(program);
blur_texCoordRangeUniform.SetValue(0.f, 0.f, 1.f, 1.f);
qr.SetCoordAttributeIndex(blur_positionAttribute());
dev->Enable(IGLDevice::Blend, false);
GLColorBuffer buf2 = renderer->GetFramebufferManager()->CreateBufferHandle(w/2, h/2, false);
dev->Viewport(0, 0, w/2, h/2);
dev->BindFramebuffer(IGLDevice::Framebuffer, buf2.GetFramebuffer());
qr.Draw();
return buf2;
}
GLColorBuffer GLBloomFilter::Filter(GLColorBuffer input) {
SPADES_MARK_FUNCTION();
std::vector<Level> levels;
IGLDevice *dev = renderer->GetGLDevice();
GLQuadRenderer qr(dev);
static GLProgramAttribute thruPosition("positionAttribute");
static GLProgramUniform thruColor("colorUniform");
static GLProgramUniform thruTexture("texture");
static GLProgramUniform thruTexCoordRange("texCoordRange");
thruPosition(thru);
thruColor(thru);
thruTexture(thru);
thruTexCoordRange(thru);
GLProgram *gammaMix = renderer->RegisterProgram("Shaders/PostFilters/GammaMix.program");
static GLProgramAttribute gammaMixPosition("positionAttribute");
static GLProgramUniform gammaMixTexture1("texture1");
static GLProgramUniform gammaMixTexture2("texture2");
static GLProgramUniform gammaMixMix1("mix1");
static GLProgramUniform gammaMixMix2("mix2");
gammaMixPosition(gammaMix);
gammaMixTexture1(gammaMix);
gammaMixTexture2(gammaMix);
gammaMixMix1(gammaMix);
gammaMixMix2(gammaMix);
thru->Use();
thruColor.SetValue(1.f, 1.f, 1.f, 1.f);
thruTexture.SetValue(0);
dev->Enable(IGLDevice::Blend, false);
// create downsample levels
for(int i = 0; i < 6; i++){
GLColorBuffer prevLevel;
if(i == 0){
prevLevel = input;
}else{
prevLevel = levels.back().buffer;
}
int prevW = prevLevel.GetWidth();
int prevH = prevLevel.GetHeight();
int newW = (prevW + 1) / 2;
int newH = (prevH + 1) / 2;
GLColorBuffer newLevel = input.GetManager()->CreateBufferHandle(newW, newH);
thru->Use();
qr.SetCoordAttributeIndex(thruPosition());
dev->BindTexture(IGLDevice::Texture2D, prevLevel.GetTexture());
dev->BindFramebuffer(IGLDevice::Framebuffer, newLevel.GetFramebuffer());
dev->Viewport(0, 0, newLevel.GetWidth(), newLevel.GetHeight());
thruTexCoordRange.SetValue(0.f, 0.f,
(float)newLevel.GetWidth() * 2.f / (float)prevW,
(float)newLevel.GetHeight() * 2.f / (float)prevH);
qr.Draw();
dev->BindTexture(IGLDevice::Texture2D, 0);
Level lv;
lv.w = newW; lv.h = newH;
lv.buffer = newLevel;
levels.push_back(lv);
}
dev->Enable(IGLDevice::Blend, true);
dev->BlendFunc(IGLDevice::SrcAlpha,
IGLDevice::OneMinusSrcAlpha);
// composite levels in the opposite direction
thruTexCoordRange.SetValue(0.f, 0.f, 1.f, 1.f);
for(int i = (int)levels.size() - 1; i >= 1; i--){
int cnt = (int)levels.size() - i;
float alpha = (float)cnt / (float)(cnt + 1);
alpha = sqrtf(alpha);
GLColorBuffer curLevel = levels[i].buffer;
GLColorBuffer targLevel = levels[i - 1].buffer;
thru->Use();
qr.SetCoordAttributeIndex(thruPosition());
dev->BindTexture(IGLDevice::Texture2D, curLevel.GetTexture());
dev->BindFramebuffer(IGLDevice::Framebuffer, targLevel.GetFramebuffer());
dev->Viewport(0, 0, targLevel.GetWidth(), targLevel.GetHeight());
thruColor.SetValue(1.f, 1.f, 1.f, alpha);
qr.Draw();
dev->BindTexture(IGLDevice::Texture2D, 0);
}
// composite to the final image
GLColorBuffer output = input.GetManager()->CreateBufferHandle();
GLColorBuffer topLevel = levels[0].buffer;
gammaMix->Use();
qr.SetCoordAttributeIndex(gammaMixPosition());
dev->ActiveTexture(0);
dev->BindTexture(IGLDevice::Texture2D, input.GetTexture());
dev->ActiveTexture(1);
dev->BindTexture(IGLDevice::Texture2D, topLevel.GetTexture());
dev->BindFramebuffer(IGLDevice::Framebuffer, output.GetFramebuffer());
dev->Viewport(0, 0, output.GetWidth(), output.GetHeight());
gammaMixTexture1.SetValue(0);
gammaMixTexture2.SetValue(1);
gammaMixMix1.SetValue(.8f, .8f, .8f);
gammaMixMix2.SetValue(.2f, .2f, .2f);
qr.Draw();
dev->BindTexture(IGLDevice::Texture2D, 0);
dev->ActiveTexture(0);
return output;
}
GLColorBuffer GLFogFilter::Filter(GLColorBuffer input) {
SPADES_MARK_FUNCTION();
IGLDevice *dev = renderer->GetGLDevice();
GLQuadRenderer qr(dev);
GLProgram *lens = renderer->RegisterProgram("Shaders/PostFilters/Fog.program");
static GLProgramAttribute lensPosition("positionAttribute");
static GLProgramUniform lensShadowMapTexture("shadowMapTexture");
static GLProgramUniform lensCoarseShadowMapTexture("coarseShadowMapTexture");
static GLProgramUniform lensColorTexture("colorTexture");
static GLProgramUniform lensDepthTexture("depthTexture");
static GLProgramUniform lensFov("fov");
static GLProgramUniform lensViewOrigin("viewOrigin");
static GLProgramUniform lensViewAxisUp("viewAxisUp");
static GLProgramUniform lensViewAxisSide("viewAxisSide");
static GLProgramUniform lensViewAxisFront("viewAxisFront");
static GLProgramUniform zNearFar("zNearFar");;
static GLProgramUniform fogColor("fogColor");
static GLProgramUniform fogDistance("fogDistance");
dev->Enable(IGLDevice::Blend, false);
lensPosition(lens);
lensShadowMapTexture(lens);
lensCoarseShadowMapTexture(lens);
lensColorTexture(lens);
lensDepthTexture(lens);
lensFov(lens);
lensViewOrigin(lens);
lensViewAxisUp(lens);
lensViewAxisSide(lens);
lensViewAxisFront(lens);
zNearFar(lens);
fogColor(lens);
fogDistance(lens);
lens->Use();
client::SceneDefinition def = renderer->GetSceneDef();
lensFov.SetValue(tanf(def.fovX * .5f),
tanf(def.fovY * .5f));
lensViewOrigin.SetValue(def.viewOrigin.x,
def.viewOrigin.y,
def.viewOrigin.z);
lensViewAxisUp.SetValue(def.viewAxis[1].x,
def.viewAxis[1].y,
def.viewAxis[1].z);
lensViewAxisSide.SetValue(def.viewAxis[0].x,
def.viewAxis[0].y,
def.viewAxis[0].z);
lensViewAxisFront.SetValue(def.viewAxis[2].x,
def.viewAxis[2].y,
def.viewAxis[2].z);
zNearFar.SetValue(def.zNear, def.zFar);
Vector3 fogCol = renderer->GetFogColor();
fogCol *= fogCol; // linearize
fogColor.SetValue(fogCol.x, fogCol.y, fogCol.z);
fogDistance.SetValue(128.f);
lensColorTexture.SetValue(0);
lensDepthTexture.SetValue(1);
lensShadowMapTexture.SetValue(2);
lensCoarseShadowMapTexture.SetValue(3);
// composite to the final image
GLColorBuffer output = input.GetManager()->CreateBufferHandle();
dev->Enable(IGLDevice::Blend, false);
qr.SetCoordAttributeIndex(lensPosition());
dev->ActiveTexture(0);
dev->BindTexture(IGLDevice::Texture2D, input.GetTexture());
dev->ActiveTexture(1);
dev->BindTexture(IGLDevice::Texture2D, input.GetManager()->GetDepthTexture());
dev->ActiveTexture(2);
dev->BindTexture(IGLDevice::Texture2D, renderer->GetMapShadowRenderer()->GetTexture());
dev->ActiveTexture(3);
dev->BindTexture(IGLDevice::Texture2D, renderer->GetMapShadowRenderer()->GetCoarseTexture());
dev->BindFramebuffer(IGLDevice::Framebuffer, output.GetFramebuffer());
dev->Viewport(0, 0, output.GetWidth(), output.GetHeight());
qr.Draw();
dev->ActiveTexture(0);
dev->BindTexture(IGLDevice::Texture2D, 0);
return output;
}
void GLSoftSpriteRenderer::Render() {
SPADES_MARK_FUNCTION();
lastImage = NULL;
program->Use();
device->Enable(IGLDevice::Blend, true);
device->BlendFunc(IGLDevice::One, IGLDevice::OneMinusSrcAlpha);
projectionViewMatrix(program);
rightVector(program);
frontVector(program);
viewOriginVector(program);
upVector(program);
texture(program);
depthTexture(program);
viewMatrix(program);
fogDistance(program);
fogColor(program);
zNearFar(program);
positionAttribute(program);
spritePosAttribute(program);
colorAttribute(program);
projectionViewMatrix.SetValue(renderer->GetProjectionViewMatrix());
viewMatrix.SetValue(renderer->GetViewMatrix());
fogDistance.SetValue(renderer->GetFogDistance());
Vector3 fogCol = renderer->GetFogColor();
fogCol *= fogCol; // linearize
fogColor.SetValue(fogCol.x, fogCol.y, fogCol.z);
const client::SceneDefinition &def = renderer->GetSceneDef();
rightVector.SetValue(def.viewAxis[0].x, def.viewAxis[0].y, def.viewAxis[0].z);
upVector.SetValue(def.viewAxis[1].x, def.viewAxis[1].y, def.viewAxis[1].z);
frontVector.SetValue(def.viewAxis[2].x, def.viewAxis[2].y, def.viewAxis[2].z);
viewOriginVector.SetValue(def.viewOrigin.x, def.viewOrigin.y, def.viewOrigin.z);
texture.SetValue(0);
depthTexture.SetValue(1);
zNearFar.SetValue(def.zNear, def.zFar);
device->ActiveTexture(1);
device->BindTexture(IGLDevice::Texture2D,
renderer->GetFramebufferManager()->GetDepthTexture());
device->ActiveTexture(0);
device->EnableVertexAttribArray(positionAttribute(), true);
device->EnableVertexAttribArray(spritePosAttribute(), true);
device->EnableVertexAttribArray(colorAttribute(), true);
thresLow = tanf(def.fovX * .5f) * tanf(def.fovY * .5f) * 1.8f;
thresRange = thresLow * .5f;
// full-resolution sprites
{
GLProfiler::Context measure(renderer->GetGLProfiler(), "Full Resolution");
for (size_t i = 0; i < sprites.size(); i++) {
Sprite &spr = sprites[i];
float layer = LayerForSprite(spr);
if (layer == 1.f)
continue;
if (spr.image != lastImage) {
Flush();
lastImage = spr.image;
SPAssert(vertices.empty());
}
Vertex v;
v.x = spr.center.x;
v.y = spr.center.y;
v.z = spr.center.z;
v.radius = spr.radius;
v.angle = spr.angle;
v.r = spr.color.x;
v.g = spr.color.y;
v.b = spr.color.z;
v.a = spr.color.w;
float fade = 1.f - layer;
v.r *= fade;
v.g *= fade;
v.b *= fade;
v.a *= fade;
uint32_t idx = (uint32_t)vertices.size();
v.sx = -1;
v.sy = -1;
vertices.push_back(v);
v.sx = 1;
v.sy = -1;
vertices.push_back(v);
v.sx = -1;
v.sy = 1;
vertices.push_back(v);
v.sx = 1;
v.sy = 1;
vertices.push_back(v);
indices.push_back(idx);
indices.push_back(idx + 1);
indices.push_back(idx + 2);
indices.push_back(idx + 1);
indices.push_back(idx + 3);
indices.push_back(idx + 2);
}
Flush();
}
// low-res sprites
IGLDevice::UInteger lastFb = device->GetInteger(IGLDevice::FramebufferBinding);
int sW = device->ScreenWidth(), sH = device->ScreenHeight();
int lW = (sW + 3) / 4, lH = (sH + 3) / 4;
int numLowResSprites = 0;
GLColorBuffer buf = renderer->GetFramebufferManager()->CreateBufferHandle(lW, lH, true);
device->BindFramebuffer(IGLDevice::Framebuffer, buf.GetFramebuffer());
device->ClearColor(0.f, 0.f, 0.f, 0.f);
device->Clear(IGLDevice::ColorBufferBit);
device->BlendFunc(IGLDevice::One, IGLDevice::OneMinusSrcAlpha);
device->Viewport(0, 0, lW, lH);
{
GLProfiler::Context measure(renderer->GetGLProfiler(), "Low Resolution");
for (size_t i = 0; i < sprites.size(); i++) {
Sprite &spr = sprites[i];
float layer = LayerForSprite(spr);
if (layer == 0.f)
continue;
if (spr.image != lastImage) {
Flush();
lastImage = spr.image;
SPAssert(vertices.empty());
}
numLowResSprites++;
Vertex v;
v.x = spr.center.x;
v.y = spr.center.y;
v.z = spr.center.z;
v.radius = spr.radius;
v.angle = spr.angle;
v.r = spr.color.x;
v.g = spr.color.y;
v.b = spr.color.z;
v.a = spr.color.w;
float fade = layer;
v.r *= fade;
v.g *= fade;
v.b *= fade;
v.a *= fade;
uint32_t idx = (uint32_t)vertices.size();
v.sx = -1;
v.sy = -1;
vertices.push_back(v);
v.sx = 1;
v.sy = -1;
vertices.push_back(v);
v.sx = -1;
v.sy = 1;
vertices.push_back(v);
v.sx = 1;
v.sy = 1;
vertices.push_back(v);
indices.push_back(idx);
indices.push_back(idx + 1);
indices.push_back(idx + 2);
indices.push_back(idx + 1);
indices.push_back(idx + 3);
indices.push_back(idx + 2);
}
Flush();
}
// finalize
device->ActiveTexture(1);
device->BindTexture(IGLDevice::Texture2D, 0);
device->ActiveTexture(0);
device->BindTexture(IGLDevice::Texture2D, 0);
device->EnableVertexAttribArray(positionAttribute(), false);
device->EnableVertexAttribArray(spritePosAttribute(), false);
device->EnableVertexAttribArray(colorAttribute(), false);
// composite downsampled sprite
device->BlendFunc(IGLDevice::One, IGLDevice::OneMinusSrcAlpha);
if (numLowResSprites > 0) {
GLProfiler::Context measure(renderer->GetGLProfiler(), "Finalize");
GLQuadRenderer qr(device);
// do gaussian blur
GLProgram *program =
renderer->RegisterProgram("Shaders/PostFilters/Gauss1D.program");
static GLProgramAttribute blur_positionAttribute("positionAttribute");
static GLProgramUniform blur_textureUniform("mainTexture");
static GLProgramUniform blur_unitShift("unitShift");
program->Use();
blur_positionAttribute(program);
blur_textureUniform(program);
blur_unitShift(program);
blur_textureUniform.SetValue(0);
device->ActiveTexture(0);
qr.SetCoordAttributeIndex(blur_positionAttribute());
device->Enable(IGLDevice::Blend, false);
// x-direction
GLColorBuffer buf2 =
renderer->GetFramebufferManager()->CreateBufferHandle(lW, lH, true);
device->BindTexture(IGLDevice::Texture2D, buf.GetTexture());
device->BindFramebuffer(IGLDevice::Framebuffer, buf2.GetFramebuffer());
blur_unitShift.SetValue(1.f / lW, 0.f);
qr.Draw();
buf.Release();
// x-direction
GLColorBuffer buf3 =
renderer->GetFramebufferManager()->CreateBufferHandle(lW, lH, true);
device->BindTexture(IGLDevice::Texture2D, buf2.GetTexture());
device->BindFramebuffer(IGLDevice::Framebuffer, buf3.GetFramebuffer());
blur_unitShift.SetValue(0.f, 1.f / lH);
qr.Draw();
buf2.Release();
buf = buf3;
device->Enable(IGLDevice::Blend, true);
// composite
program = renderer->RegisterProgram("Shaders/PostFilters/PassThrough.program");
static GLProgramAttribute positionAttribute("positionAttribute");
static GLProgramUniform colorUniform("colorUniform");
static GLProgramUniform textureUniform("mainTexture");
static GLProgramUniform texCoordRange("texCoordRange");
positionAttribute(program);
textureUniform(program);
texCoordRange(program);
colorUniform(program);
program->Use();
textureUniform.SetValue(0);
texCoordRange.SetValue(0.f, 0.f, 1.f, 1.f);
colorUniform.SetValue(1.f, 1.f, 1.f, 1.f);
qr.SetCoordAttributeIndex(positionAttribute());
device->BindFramebuffer(IGLDevice::Framebuffer, lastFb);
device->BindTexture(IGLDevice::Texture2D, buf.GetTexture());
device->Viewport(0, 0, sW, sH);
qr.Draw();
device->BindTexture(IGLDevice::Texture2D, 0);
} else {
device->Viewport(0, 0, sW, sH);
device->BindFramebuffer(IGLDevice::Framebuffer, lastFb);
}
buf.Release();
}