void ContextViewport::_ssao_run()

in roboschool/cpp-household/render-ssao.cpp [232:297]

• 53 lines of code
• 4 McCabe index (conditional complexity)

void ContextViewport::_ssao_run(int sampleIdx)
{
	if (blur) {
		glBindFramebuffer(GL_FRAMEBUFFER, fbuf_hbao_calc->handle);
		glDrawBuffer(GL_COLOR_ATTACHMENT0);
	} else {
		glBindFramebuffer(GL_FRAMEBUFFER, fbuf_scene->handle);
		glDisable(GL_DEPTH_TEST);
		glEnable(GL_BLEND);
		glBlendFunc(GL_ZERO,GL_SRC_COLOR);
		if (samples > 1){
			glEnable(GL_SAMPLE_MASK);
			glSampleMaski(0, 1<<sampleIdx);
		}
	}

	//glUseProgram( (USE_AO_SPECIALBLUR && blur) ?
	//	cx->program_calc_blur->programId() :
	//	cx->program_hbao_calc->programId() );

	cx->program_hbao_calc->bind();
	cx->program_hbao_calc->setUniformValue(cx->location_RadiusToScreen, cx->useful->hbaoUbo.RadiusToScreen);
	cx->program_hbao_calc->setUniformValue(cx->location_R2, cx->useful->hbaoUbo.R2);
	cx->program_hbao_calc->setUniformValue(cx->location_NegInvR2, cx->useful->hbaoUbo.NegInvR2);
	cx->program_hbao_calc->setUniformValue(cx->location_NDotVBias, cx->useful->hbaoUbo.NDotVBias);
	cx->program_hbao_calc->setUniformValue(cx->location_InvFullResolution, cx->useful->hbaoUbo.InvFullResolution[0], cx->useful->hbaoUbo.InvFullResolution[1]);
	cx->program_hbao_calc->setUniformValue(cx->location_InvQuarterResolution, cx->useful->hbaoUbo.InvQuarterResolution[0], cx->useful->hbaoUbo.InvQuarterResolution[1]);
	cx->program_hbao_calc->setUniformValue(cx->location_AOMultiplier, cx->useful->hbaoUbo.AOMultiplier);
	cx->program_hbao_calc->setUniformValue(cx->location_PowExponent, cx->useful->hbaoUbo.PowExponent);
	cx->program_hbao_calc->setUniformValue(cx->location_projInfo,
		cx->useful->hbaoUbo.projInfo[0],
		cx->useful->hbaoUbo.projInfo[1],
		cx->useful->hbaoUbo.projInfo[2],
		cx->useful->hbaoUbo.projInfo[3]);
	cx->program_hbao_calc->setUniformValue(cx->location_projScale, cx->useful->hbaoUbo.projScale[0], cx->useful->hbaoUbo.projScale[1]);
	cx->program_hbao_calc->setUniformValue(cx->location_projOrtho, cx->useful->hbaoUbo.projOrtho);
	// layered etc
	glUniform4fv(cx->location_float2Offsets, sizeof(cx->useful->hbaoUbo.float2Offsets)/sizeof(cx->useful->hbaoUbo.float2Offsets[0])/4, cx->useful->hbaoUbo.float2Offsets);
	glUniform4fv(cx->location_jitters, sizeof(cx->useful->hbaoUbo.jitters)/sizeof(cx->useful->hbaoUbo.jitters[0])/4, cx->useful->hbaoUbo.jitters);
	glUniform1i(cx->location_texLinearDepth, 1); // texture unit 0
	glUniform1i(cx->location_texRandom, 0); // texture unit 1

	glBindVertexArray(cx->ruler_vao->handle);
	glActiveTexture(GL_TEXTURE0);
	glBindTexture(GL_TEXTURE_2D, cx->hbao_randomview[sampleIdx]->handle);
	glActiveTexture(GL_TEXTURE1);
	glBindTexture(GL_TEXTURE_2D, tex_depthlinear->handle);

	glDrawArrays(GL_TRIANGLES,0,3);

	glActiveTexture(GL_TEXTURE0);
	glBindTexture(GL_TEXTURE_2D, 0);
	glActiveTexture(GL_TEXTURE1);
	glBindTexture(GL_TEXTURE_2D, 0);

	if (blur) {
		//drawHbaoBlur(projection,width,height,sampleIdx);
	}

	glEnable(GL_DEPTH_TEST);
	glDisable(GL_BLEND);
	glDisable(GL_SAMPLE_MASK);
	glSampleMaski(0, ~0);

	cx->program_hbao_calc->release();
}