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SSAO: Improve randomness using NEAREST filtering

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This commit is contained in:
Vincent Lejeune 2014-01-27 00:09:36 +01:00
parent bf22a1122b
commit 31991ecd7e
2 changed files with 3 additions and 12 deletions
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2
data/shaders/ssao.frag
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@ -17,7 +17,7 @@ const float invSamples = strengh / SAMPLES;
vec3 rand(vec2 co)
{
return texture(noise_texture, co*20).xyz;
return texture(noise_texture, co*20.16).xyz;
}
void main(void)

13
src/graphics/post_processing.cpp
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@ -539,21 +539,12 @@ void PostProcessing::renderSSAO(const core::matrix4 &invprojm, const core::matri
glUniform4fv(FullScreenShader::SSAOShader::uniform_samplePoints, 16, FullScreenShader::SSAOShader::SSAOSamples);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, static_cast<irr::video::COpenGLTexture*>(irr_driver->getRTT(RTT_NORMAL_AND_DEPTH))->getOpenGLTextureName());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
setTexture(0, static_cast<irr::video::COpenGLTexture*>(irr_driver->getRTT(RTT_NORMAL_AND_DEPTH))->getOpenGLTextureName(), GL_LINEAR, GL_LINEAR);
glUniform1i(FullScreenShader::SSAOShader::uniform_normals_and_depth, 0);
if (!noise_tex)
noise_tex = irr_driver->getTexture(file_manager->getAsset("textures/noise.png").c_str());
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, static_cast<irr::video::COpenGLTexture*>(noise_tex)->getOpenGLTextureName());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
setTexture(1, static_cast<irr::video::COpenGLTexture*>(noise_tex)->getOpenGLTextureName(), GL_NEAREST, GL_NEAREST);
glUniform1i(FullScreenShader::SSAOShader::uniform_noise_texture, 1);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);