From 355707e4f665904e31d9f5fcff1e3921f7db8cdd Mon Sep 17 00:00:00 2001
From: Tim Murray <timmurray@google.com>
Date: Tue, 17 Dec 2013 13:28:17 -0800
Subject: Move RenderScript from graphics/ to new fw/base subdirectory rs.

Change-Id: I30b6633578f063840e1bdbcc9ba513b727912a6d
---
 .../renderscript/ProgramFragmentFixedFunction.java | 335 +++++++++++++++++++++
 1 file changed, 335 insertions(+)
 create mode 100644 rs/java/android/renderscript/ProgramFragmentFixedFunction.java

(limited to 'rs/java/android/renderscript/ProgramFragmentFixedFunction.java')

diff --git a/rs/java/android/renderscript/ProgramFragmentFixedFunction.java b/rs/java/android/renderscript/ProgramFragmentFixedFunction.java
new file mode 100644
index 000000000000..22aed0a14e95
--- /dev/null
+++ b/rs/java/android/renderscript/ProgramFragmentFixedFunction.java
@@ -0,0 +1,335 @@
+/*
+ * Copyright (C) 2008-2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.renderscript;
+
+
+import android.util.Log;
+
+
+/**
+ * @hide
+ * @deprecated in API 16
+ * <p>ProgramFragmentFixedFunction is a helper class that provides
+ * a way to make a simple fragment shader without writing any
+ * GLSL code. This class allows for display of constant color, interpolated
+ * color from the vertex shader, or combinations of the both
+ * blended with results of up to two texture lookups.</p
+ *
+ **/
+public class ProgramFragmentFixedFunction extends ProgramFragment {
+    ProgramFragmentFixedFunction(long id, RenderScript rs) {
+        super(id, rs);
+    }
+
+    static class InternalBuilder extends BaseProgramBuilder {
+        /**
+         * @deprecated in API 16
+         */
+        public InternalBuilder(RenderScript rs) {
+            super(rs);
+        }
+
+        /**
+         * @deprecated in API 16
+         * Creates ProgramFragmentFixedFunction from the current state
+         * of the builder
+         *
+         * @return  ProgramFragmentFixedFunction
+         */
+        public ProgramFragmentFixedFunction create() {
+            mRS.validate();
+            int[] tmp = new int[(mInputCount + mOutputCount + mConstantCount + mTextureCount) * 2];
+            String[] texNames = new String[mTextureCount];
+            int idx = 0;
+
+            for (int i=0; i < mInputCount; i++) {
+                tmp[idx++] = ProgramParam.INPUT.mID;
+                tmp[idx++] = (int)mInputs[i].getID(mRS);
+            }
+            for (int i=0; i < mOutputCount; i++) {
+                tmp[idx++] = ProgramParam.OUTPUT.mID;
+                tmp[idx++] = (int)mOutputs[i].getID(mRS);
+            }
+            for (int i=0; i < mConstantCount; i++) {
+                tmp[idx++] = ProgramParam.CONSTANT.mID;
+                tmp[idx++] = (int)mConstants[i].getID(mRS);
+            }
+            for (int i=0; i < mTextureCount; i++) {
+                tmp[idx++] = ProgramParam.TEXTURE_TYPE.mID;
+                tmp[idx++] = (int)mTextureTypes[i].mID;
+                texNames[i] = mTextureNames[i];
+            }
+
+            long id = mRS.nProgramFragmentCreate(mShader, texNames, tmp);
+            ProgramFragmentFixedFunction pf = new ProgramFragmentFixedFunction(id, mRS);
+            initProgram(pf);
+            return pf;
+        }
+    }
+
+    /**
+     * @deprecated in API 16
+     */
+    public static class Builder {
+        /**
+         * @deprecated in API 16
+         */
+        public static final int MAX_TEXTURE = 2;
+        int mNumTextures;
+        boolean mPointSpriteEnable;
+        boolean mVaryingColorEnable;
+        String mShader;
+        RenderScript mRS;
+
+        /**
+         * @deprecated in API 16
+         * EnvMode describes how textures are combined with the existing
+         * color in the fixed function fragment shader
+         *
+         **/
+        public enum EnvMode {
+            /**
+             * @deprecated in API 16
+             **/
+            REPLACE (1),
+            /**
+             * @deprecated in API 16
+             **/
+            MODULATE (2),
+            /**
+             * @deprecated in API 16
+             **/
+            DECAL (3);
+
+            int mID;
+            EnvMode(int id) {
+                mID = id;
+            }
+        }
+
+        /**
+         * @deprecated in API 16
+         * Format describes the pixel format of textures in the fixed
+         * function fragment shader and how they are sampled
+         *
+         **/
+        public enum Format {
+            /**
+             * @deprecated in API 16
+             **/
+            ALPHA (1),
+            /**
+             * @deprecated in API 16
+             **/
+            LUMINANCE_ALPHA (2),
+            /**
+             * @deprecated in API 16
+             **/
+            RGB (3),
+            /**
+             * @deprecated in API 16
+             **/
+            RGBA (4);
+
+            int mID;
+            Format(int id) {
+                mID = id;
+            }
+        }
+
+        private class Slot {
+            EnvMode env;
+            Format format;
+            Slot(EnvMode _env, Format _fmt) {
+                env = _env;
+                format = _fmt;
+            }
+        }
+        Slot[] mSlots;
+
+        private void buildShaderString() {
+            mShader  = "//rs_shader_internal\n";
+            mShader += "varying lowp vec4 varColor;\n";
+            mShader += "varying vec2 varTex0;\n";
+
+            mShader += "void main() {\n";
+            if (mVaryingColorEnable) {
+                mShader += "  lowp vec4 col = varColor;\n";
+            } else {
+                mShader += "  lowp vec4 col = UNI_Color;\n";
+            }
+
+            if (mNumTextures != 0) {
+                if (mPointSpriteEnable) {
+                    mShader += "  vec2 t0 = gl_PointCoord;\n";
+                } else {
+                    mShader += "  vec2 t0 = varTex0.xy;\n";
+                }
+            }
+
+            for(int i = 0; i < mNumTextures; i ++) {
+                switch(mSlots[i].env) {
+                case REPLACE:
+                    switch (mSlots[i].format) {
+                    case ALPHA:
+                        mShader += "  col.a = texture2D(UNI_Tex0, t0).a;\n";
+                        break;
+                    case LUMINANCE_ALPHA:
+                        mShader += "  col.rgba = texture2D(UNI_Tex0, t0).rgba;\n";
+                        break;
+                    case RGB:
+                        mShader += "  col.rgb = texture2D(UNI_Tex0, t0).rgb;\n";
+                        break;
+                    case RGBA:
+                        mShader += "  col.rgba = texture2D(UNI_Tex0, t0).rgba;\n";
+                        break;
+                    }
+                    break;
+                case MODULATE:
+                    switch (mSlots[i].format) {
+                    case ALPHA:
+                        mShader += "  col.a *= texture2D(UNI_Tex0, t0).a;\n";
+                        break;
+                    case LUMINANCE_ALPHA:
+                        mShader += "  col.rgba *= texture2D(UNI_Tex0, t0).rgba;\n";
+                        break;
+                    case RGB:
+                        mShader += "  col.rgb *= texture2D(UNI_Tex0, t0).rgb;\n";
+                        break;
+                    case RGBA:
+                        mShader += "  col.rgba *= texture2D(UNI_Tex0, t0).rgba;\n";
+                        break;
+                    }
+                    break;
+                case DECAL:
+                    mShader += "  col = texture2D(UNI_Tex0, t0);\n";
+                    break;
+                }
+            }
+
+            mShader += "  gl_FragColor = col;\n";
+            mShader += "}\n";
+        }
+
+        /**
+         * @deprecated
+         * Creates a builder for fixed function fragment program
+         *
+         * @param rs Context to which the program will belong.
+         */
+        public Builder(RenderScript rs) {
+            mRS = rs;
+            mSlots = new Slot[MAX_TEXTURE];
+            mPointSpriteEnable = false;
+        }
+
+        /**
+         * @deprecated in API 16
+         * Adds a texture to be fetched as part of the fixed function
+         * fragment program
+         *
+         * @param env specifies how the texture is combined with the
+         *            current color
+         * @param fmt specifies the format of the texture and how its
+         *            components will be used to combine with the
+         *            current color
+         * @param slot index of the texture to apply the operations on
+         *
+         * @return this
+         */
+        public Builder setTexture(EnvMode env, Format fmt, int slot)
+            throws IllegalArgumentException {
+            if((slot < 0) || (slot >= MAX_TEXTURE)) {
+                throw new IllegalArgumentException("MAX_TEXTURE exceeded.");
+            }
+            mSlots[slot] = new Slot(env, fmt);
+            return this;
+        }
+
+        /**
+         * @deprecated in API 16
+         * Specifies whether the texture coordinate passed from the
+         * vertex program is replaced with an openGL internal point
+         * sprite texture coordinate
+         *
+         **/
+        public Builder setPointSpriteTexCoordinateReplacement(boolean enable) {
+            mPointSpriteEnable = enable;
+            return this;
+        }
+
+        /**
+         * @deprecated in API 16
+         * Specifies whether the varying color passed from the vertex
+         * program or the constant color set on the fragment program is
+         * used in the final color calculation in the fixed function
+         * fragment shader
+         *
+         **/
+        public Builder setVaryingColor(boolean enable) {
+            mVaryingColorEnable = enable;
+            return this;
+        }
+
+        /**
+         * @deprecated in API 16
+        * Creates the fixed function fragment program from the current
+        * state of the builder.
+        *
+        */
+        public ProgramFragmentFixedFunction create() {
+            InternalBuilder sb = new InternalBuilder(mRS);
+            mNumTextures = 0;
+            for(int i = 0; i < MAX_TEXTURE; i ++) {
+                if(mSlots[i] != null) {
+                    mNumTextures ++;
+                }
+            }
+            buildShaderString();
+            sb.setShader(mShader);
+
+            Type constType = null;
+            if (!mVaryingColorEnable) {
+                Element.Builder b = new Element.Builder(mRS);
+                b.add(Element.F32_4(mRS), "Color");
+                Type.Builder typeBuilder = new Type.Builder(mRS, b.create());
+                typeBuilder.setX(1);
+                constType = typeBuilder.create();
+                sb.addConstant(constType);
+            }
+            for (int i = 0; i < mNumTextures; i ++) {
+                sb.addTexture(TextureType.TEXTURE_2D);
+            }
+
+            ProgramFragmentFixedFunction pf = sb.create();
+            pf.mTextureCount = MAX_TEXTURE;
+            if (!mVaryingColorEnable) {
+                Allocation constantData = Allocation.createTyped(mRS,constType);
+                FieldPacker fp = new FieldPacker(16);
+                Float4 f4 = new Float4(1.f, 1.f, 1.f, 1.f);
+                fp.addF32(f4);
+                constantData.setFromFieldPacker(0, fp);
+                pf.bindConstants(constantData, 0);
+            }
+            return pf;
+        }
+    }
+}
+
+
+
+
-- 
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