void CzPlatformRender::DrawPrimitives(CzRenderPrim3* prims, CzRenderMaterial* materials, int num_prims, bool single_material)
{
while (num_prims-- > 0)
{
CIwMaterial::AlphaMode am = (CIwMaterial::AlphaMode)materials->AlphaMode; // TODO Add proper method to map Marmalade Alpha mode to Marmalade
int vc = prims->VertCount;
// Set up vertex streams
if (prims->UVs != NULL)
IwGxSetUVStream((CIwFVec2*)prims->UVs, 0);
else
IwGxSetUVStream(NULL);
if (prims->ModelSpace)
IwGxSetVertStreamModelSpace((CIwFVec3*)prims->Verts, vc);
else
IwGxSetVertStreamViewSpace((CIwFVec3*)prims->Verts, vc);
IwGxSetColStream((CIwColour*)prims->Colours);
IwGxSetNormStream((CIwFVec3*)prims->Normals);
CzTexture texture = materials->Image->getTexture();
CIwTexture* mt = static_cast<CIwTexture*>(texture);
bool filter;
if (materials->Image->isFilterSet())
filter = mt->GetFiltering();
else
filter = materials->Filter;
// Only create new render material if something important has changed
if (texture != CurrentTexture || CurrentAlphaMode != materials->AlphaMode || CurrentFilter != filter || CurrentTexture == NULL || CurrentTiled != materials->Tiled)
{
CIwMaterial* mat = IW_GX_ALLOC_MATERIAL();
mat->SetTexture(mt);
mat->SetDepthWriteMode(CIwMaterial::DEPTH_WRITE_DISABLED);
mat->SetClamping(!materials->Tiled);
mat->SetFiltering(filter);
mat->SetAlphaMode(am);
mat->SetCullMode(CIwMaterial::CULL_BACK);
// mat->SetCullMode(CIwMaterial::CULL_NONE);
IwGxSetMaterial(mat);
CurrentTexture = texture;
CurrentAlphaMode = materials->AlphaMode;
CurrentTiled = materials->Tiled;
CurrentFilter = filter;
}
else
{
RedundantTextureCalls++;
}
// Render the primitive
IwGxDrawPrims(CzToIwGxPrimType[prims->Type], prims->Indices, prims->IndicesCount);
// Move to next primitive
prims++;
if (!single_material)
materials++;
}
}
void renderImageWorldSpace(CIwFVec2& position, float angle, float scaleFactor,
int textureSize, float worldRot, int frameNumber, int numFrames, float z) {
static CIwSVec3 vertices[4];
static CIwSVec2 UVs[4];
//set up model space vertices
int vertexDist = scaleFactor*textureSize/2;
vertices[0] = CIwSVec3(-1*vertexDist, -1*vertexDist, z);
vertices[2] = CIwSVec3(vertexDist, -1*vertexDist, z);
vertices[3] = CIwSVec3(vertexDist, vertexDist, z);
vertices[1] = CIwSVec3(-1*vertexDist, vertexDist, z);
CIwMat modelTransform = CIwMat::g_Identity;
modelTransform.SetRotZ(IW_ANGLE_FROM_RADIANS(angle));
modelTransform.SetTrans(CIwVec3(position.x, -position.y, 0));
CIwMat rot = CIwMat::g_Identity;
rot.SetRotZ(IW_ANGLE_FROM_RADIANS(worldRot));
modelTransform = modelTransform*rot;
IwGxSetModelMatrix(&modelTransform, false);
float frameRatio = 1.0/numFrames;
//set up sprite UV's
iwfixed cf = IW_FIXED((float)frameNumber / numFrames);
iwfixed nf = IW_FIXED((frameNumber + 1.0) / numFrames);
UVs[0] = CIwSVec2(cf, 0);
UVs[2] = CIwSVec2(nf, 0);
UVs[3] = CIwSVec2(nf, IW_GEOM_ONE);
UVs[1] = CIwSVec2(cf, IW_GEOM_ONE);
//render the unit in model space
IwGxSetUVStream(UVs);
IwGxSetZDepthFixed(8);
IwGxSetVertStreamModelSpace(vertices, 4);
IwGxDrawPrims(IW_GX_QUAD_STRIP, NULL, 4);
IwGxFlush();
}
