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我在o3d(plagin版本)的galery上工作,我需要讓照片透明。照片在hud上。這裏是一些代碼:o3d紋理和透明度
g_canvasInfoPict = o3djs.canvas.create(g_pack, g_hudRoot, g_hudViewInfo);
alphaParam = g_canvasInfoPict.transparentState_.getStateParam("o3d.AlphaReference");
alphaParam.value = 0.5;
alphaParam = g_canvasInfoPict.transparentState_.getStateParam("o3d.BlendAlphaEquation");
alphaParam.value = g_o3d.State.BLEND_SUBTRACT;
alphaParam = g_canvasInfoPict.transparentState_.getStateParam("o3d.SourceBlendFunction");
alphaParam.value = g_o3d.State.BLENDFUNC_ONE;
paramOne = g_canvasInfoPict.transparentState_.getStateParam("o3d.DestinationBlendFunction");
paramOne.value = g_o3d.State.BLENDFUNC_DESTINATION_ALPHA;//or BLENDFUNC_SOURCE_ALPHA or BLENDFUNC_SOURCE_ALPHA_SATUTRATE or BLENDFUNC_ONE or BLENDFUNC_ZERO
g_fullPictCanvas = g_canvasInfoPict.createXYQuad(paddingX, paddingY, -14, g_fullPictTexture.width, g_fullPictTexture.height, true);
g_fullPictCanvas.canvas.drawBitmap(g_fullPictTexture, 0, g_fullPictTexture.height);
g_fullPictCanvas.updateTexture();
但它不起作用。當設置paramOne.value = BLENDFUNC_ZERO照片顯示(非透明的)
paramOne.value = BLENDFUNC_ONE照片沒有顯示(全透明)
因此,如何才達到中間結果?