lldrawpoolstars.cpp

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#include "llviewerprecompiledheaders.h"

#include "lldrawpoolstars.h"

#include "llface.h"
#include "llsky.h"
#include "llvostars.h"
#include "pipeline.h"
#include "llviewercamera.h"
#include "llglslshader.h"

LLDrawPoolStars::LLDrawPoolStars() :
        LLFacePool(POOL_STARS)
{
}

LLDrawPool *LLDrawPoolStars::instancePool()
{
        return new LLDrawPoolStars();
}

void LLDrawPoolStars::prerender()
{
        mVertexShaderLevel = LLShaderMgr::getVertexShaderLevel(LLShaderMgr::SHADER_ENVIRONMENT);
}

void LLDrawPoolStars::render(S32 pass)
{
        if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SKY)))
        {
                return;
        }
        
        if (mDrawFace.empty())
        {
                return;
        }
        
        LLGLSPipelineSkyBox gls_sky;
        LLGLDepthTest gls_depth(GL_FALSE, GL_FALSE);
        LLGLEnable blend(GL_BLEND);
        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
        
        LLGLDisable gl_texture_2d(GL_TEXTURE_2D);
        glDisableClientState(GL_TEXTURE_COORD_ARRAY);
        glDisableClientState(GL_NORMAL_ARRAY);

        gPipeline.disableLights();

        GLint* viewport = (GLint*) gGLViewport;

        if (viewport[2] > 512 && viewport[3] > 512)
        {
                glPointSize(2.f);
        }

        LLVector3 origin = gCamera->getOrigin();
        glPushMatrix();
        glTranslatef(origin.mV[0], origin.mV[1], origin.mV[2]);

        glEnableClientState(GL_COLOR_ARRAY);
        
        S32 face_count = (S32)mDrawFace.size();
        for (S32 curr_face = 0; curr_face < face_count; curr_face++)
        {
                LLFace* face = mDrawFace[curr_face];
                if (!face->getGeomCount())
                {
                        continue;
                }
        
                //  render the stars as a sphere centered at viewer camera 
                if (face->mVertexBuffer.notNull())
                {
                        face->mVertexBuffer->setBuffer(getVertexDataMask());
                        U32* indicesp = (U32*) face->mVertexBuffer->getIndicesPointer();
                        glDrawElements(GL_POINTS, face->getIndicesCount(), GL_UNSIGNED_INT, indicesp);
                        mIndicesDrawn += face->getIndicesCount();
                }
        }
        glDisableClientState(GL_COLOR_ARRAY);
        glPointSize(1.f);
        glPopMatrix();
}


void LLDrawPoolStars::renderForSelect()
{
}

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