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Commit 707b2f78 authored by Romain Guy's avatar Romain Guy
Browse files

Optimize GLSL shaders. 

Change-Id: I9a5e01bced63d8da0c61330a543a2b805388a59d
parent 7537f856

core/java/android/widget/ListView.java

+0 −2
Original line number Diff line number Diff line
@@ -26,7 +26,6 @@ import android.graphics.Canvas; 
import android.graphics.Paint;

import android.graphics.PixelFormat;

import android.graphics.Rect;

import android.graphics.drawable.ColorDrawable;

import android.graphics.drawable.Drawable;

import android.util.AttributeSet;

import android.util.SparseBooleanArray;
@@ -2980,7 +2979,6 @@ public class ListView extends AbsListView { 
            if (!mStackFromBottom) {

                int bottom;

                

                final int scrollY = mScrollY;

                for (int i = 0; i < count; i++) {

                    if ((headerDividers || first + i >= headerCount) &&

                            (footerDividers || first + i < footerLimit)) {

libs/hwui/OpenGLRenderer.cpp

+11 −3
Original line number Diff line number Diff line
@@ -985,6 +985,7 @@ void OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t 
     ProgramDescription description;

     description.hasTexture = true;

     description.hasAlpha8Texture = true;

     const bool setColor = description.setAlpha8Color(r, g, b, a);



     if (applyFilters) {

         if (mShader) {
@@ -1021,7 +1022,9 @@ void OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t 
         mModelView.loadIdentity();

     }

     mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform);

     glUniform4f(mCaches.currentProgram->color, r, g, b, a);

     if (setColor) {

         mCaches.currentProgram->setColor(r, g, b, a);

     }



     textureUnit++;

     if (applyFilters) {
@@ -1126,6 +1129,8 @@ void OpenGLRenderer::setupColorRect(float left, float top, float right, float bo 


    // Describe the required shaders

    ProgramDescription description;

    const bool setColor = description.setColor(r, g, b, a);



    if (mShader) {

        mShader->describe(description, mExtensions);

    }
@@ -1152,7 +1157,7 @@ void OpenGLRenderer::setupColorRect(float left, float top, float right, float bo 
        mat4 identity;

        mCaches.currentProgram->set(mOrthoMatrix, mModelView, identity);

    }

    glUniform4f(mCaches.currentProgram->color, r, g, b, a);

    mCaches.currentProgram->setColor(r, g, b, a);



    // Setup attributes and uniforms required by the shaders

    if (mShader) {
@@ -1189,6 +1194,7 @@ void OpenGLRenderer::drawTextureMesh(float left, float top, float right, float b 


    ProgramDescription description;

    description.hasTexture = true;

    const bool setColor = description.setColor(alpha, alpha, alpha, alpha);

    if (mColorFilter) {

        mColorFilter->describe(description, mExtensions);

    }
@@ -1211,7 +1217,9 @@ void OpenGLRenderer::drawTextureMesh(float left, float top, float right, float b 
    glUniform1i(mCaches.currentProgram->getUniform("sampler"), 0);



    // Always premultiplied

    glUniform4f(mCaches.currentProgram->color, alpha, alpha, alpha, alpha);

    if (setColor) {

        mCaches.currentProgram->setColor(alpha, alpha, alpha, alpha);

    }



    // Mesh

    int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords");

libs/hwui/Program.cpp

+4 −1
Original line number Diff line number Diff line
@@ -58,7 +58,6 @@ Program::Program(const char* vertex, const char* fragment) { 
    mUse = false;



    position = addAttrib("position");

    color = addUniform("color");

    transform = addUniform("transform");

}
@@ -124,6 +123,10 @@ void Program::set(const mat4& projectionMatrix, const mat4& modelViewMatrix, 
    glUniformMatrix4fv(transform, 1, GL_FALSE, &t.data[0]);

}



void Program::setColor(const float r, const float g, const float b, const float a) {

    glUniform4f(getUniform("color"), r, g, b, a);

}



void Program::use() {

    glUseProgram(id);

    mUse = true;

libs/hwui/Program.h

+4 −4
Original line number Diff line number Diff line
@@ -77,14 +77,14 @@ public: 
             const mat4& transformMatrix);



    /**

     * Name of the position attribute.

     * Sets the color associated with this shader.

     */

    int position;

    void setColor(const float r, const float g, const float b, const float a);



    /**

     * Name of the color uniform.

     * Name of the position attribute.

     */

    int color;

    int position;



    /**

     * Name of the transform uniform.

libs/hwui/ProgramCache.cpp

+150 −21
Original line number Diff line number Diff line
@@ -23,6 +23,14 @@ 
namespace android {

namespace uirenderer {



///////////////////////////////////////////////////////////////////////////////

// Defines

///////////////////////////////////////////////////////////////////////////////



#define MODULATE_OP_NO_MODULATE 0

#define MODULATE_OP_MODULATE 1

#define MODULATE_OP_MODULATE_A8 2



///////////////////////////////////////////////////////////////////////////////

// Vertex shaders snippets

///////////////////////////////////////////////////////////////////////////////
@@ -69,8 +77,7 @@ const char* gVS_Main_OutGradient[3] = { 
        "    sweep = (screenSpace * position).xy;\n"

};

const char* gVS_Main_OutBitmapTexCoords =

        "    vec4 bitmapCoords = textureTransform * position;\n"

        "    outBitmapTexCoords = bitmapCoords.xy * textureDimension;\n";

        "    outBitmapTexCoords = (textureTransform * position).xy * textureDimension;\n";

const char* gVS_Main_Position =

        "    gl_Position = transform * position;\n";

const char* gVS_Footer =
@@ -113,12 +120,52 @@ const char* gFS_Uniforms_ColorOp[4] = { 
const char* gFS_Main =

        "\nvoid main(void) {\n"

        "    lowp vec4 fragColor;\n";



// Fast cases

const char* gFS_Fast_SingleColor =

        "\nvoid main(void) {\n"

        "    gl_FragColor = color;\n"

        "}\n\n";

const char* gFS_Fast_SingleTexture =

        "\nvoid main(void) {\n"

        "    gl_FragColor = texture2D(sampler, outTexCoords);\n"

        "}\n\n";

const char* gFS_Fast_SingleModulateTexture =

        "\nvoid main(void) {\n"

        "    gl_FragColor = color.a * texture2D(sampler, outTexCoords);\n"

        "}\n\n";

const char* gFS_Fast_SingleA8Texture =

        "\nvoid main(void) {\n"

        "    gl_FragColor = vec4(0.0, 0.0, 0.0, texture2D(sampler, outTexCoords).a);\n"

        "}\n\n";

const char* gFS_Fast_SingleModulateA8Texture =

        "\nvoid main(void) {\n"

        "    gl_FragColor = color * texture2D(sampler, outTexCoords).a;\n"

        "}\n\n";

const char* gFS_Fast_SingleGradient =

        "\nvoid main(void) {\n"

        "    gl_FragColor = texture2D(gradientSampler, linear);\n"

        "}\n\n";

const char* gFS_Fast_SingleModulateGradient =

        "\nvoid main(void) {\n"

        "    gl_FragColor = color.a * texture2D(gradientSampler, linear);\n"

        "}\n\n";



// General case

const char* gFS_Main_FetchColor =

        "    fragColor = color;\n";

const char* gFS_Main_FetchTexture =

        "    fragColor = color * texture2D(sampler, outTexCoords);\n";

const char* gFS_Main_FetchA8Texture =

        "    fragColor = color * texture2D(sampler, outTexCoords).a;\n";

const char* gFS_Main_FetchTexture[2] = {

        // Don't modulate

        "    fragColor = texture2D(sampler, outTexCoords);\n",

        // Modulate

        "    fragColor = color * texture2D(sampler, outTexCoords);\n"

};

const char* gFS_Main_FetchA8Texture[2] = {

        // Don't modulate

        "    fragColor = vec4(0.0, 0.0, 0.0, texture2D(sampler, outTexCoords).a);\n",

        // Modulate

        "    fragColor = color * texture2D(sampler, outTexCoords).a;\n"

};

const char* gFS_Main_FetchGradient[3] = {

        // Linear

        "    vec4 gradientColor = texture2D(gradientSampler, linear);\n",
@@ -137,12 +184,30 @@ const char* gFS_Main_BlendShadersBG = 
        "    fragColor = blendShaders(gradientColor, bitmapColor)";

const char* gFS_Main_BlendShadersGB =

        "    fragColor = blendShaders(bitmapColor, gradientColor)";

const char* gFS_Main_BlendShaders_Modulate =

        " * fragColor.a;\n";

const char* gFS_Main_GradientShader_Modulate =

        "    fragColor = gradientColor * fragColor.a;\n";

const char* gFS_Main_BitmapShader_Modulate =

        "    fragColor = bitmapColor * fragColor.a;\n";

const char* gFS_Main_BlendShaders_Modulate[3] = {

        // Don't modulate

        ";\n",

        // Modulate

        " * fragColor.a;\n",

        // Modulate with alpha 8 texture

        " * texture2D(sampler, outTexCoords).a;\n"

};

const char* gFS_Main_GradientShader_Modulate[3] = {

        // Don't modulate

        "    fragColor = gradientColor;\n",

        // Modulate

        "    fragColor = gradientColor * fragColor.a;\n",

        // Modulate with alpha 8 texture

        "    fragColor = gradientColor * texture2D(sampler, outTexCoords).a;\n"

    };

const char* gFS_Main_BitmapShader_Modulate[3] = {

        // Don't modulate

        "    fragColor = bitmapColor;\n",

        // Modulate

        "    fragColor = bitmapColor * fragColor.a;\n",

        // Modulate with alpha 8 texture

        "    fragColor = bitmapColor * texture2D(sampler, outTexCoords).a;\n"

    };

const char* gFS_Main_FragColor =

        "    gl_FragColor = fragColor;\n";

const char* gFS_Main_FragColor_Blend =
@@ -317,7 +382,7 @@ String8 ProgramCache::generateFragmentShader(const ProgramDescription& descripti 
    // Set the default precision

    String8 shader;



    bool blendFramebuffer = description.framebufferMode >= SkXfermode::kPlus_Mode;

    const bool blendFramebuffer = description.framebufferMode >= SkXfermode::kPlus_Mode;

    if (blendFramebuffer) {

        shader.append(gFS_Header_Extension_FramebufferFetch);

    }
@@ -335,15 +400,72 @@ String8 ProgramCache::generateFragmentShader(const ProgramDescription& descripti 
        shader.append(gVS_Header_Varyings_HasBitmap);

    }





    // Uniforms

    int modulateOp = MODULATE_OP_NO_MODULATE;

    const bool singleColor = !description.hasTexture &&

            !description.hasGradient && !description.hasBitmap;



    if (description.modulate || singleColor) {

        shader.append(gFS_Uniforms_Color);

        if (!singleColor) modulateOp = MODULATE_OP_MODULATE;

    }

    if (description.hasTexture) {

        shader.append(gFS_Uniforms_TextureSampler);

    }

    if (description.hasGradient) {

        shader.append(gFS_Uniforms_GradientSampler[description.gradientType]);

    }



    // Optimization for common cases

    if (!blendFramebuffer) {

        bool fast = false;



        const bool noShader = !description.hasGradient && !description.hasBitmap;

        const bool singleTexture = description.hasTexture &&

                !description.hasAlpha8Texture && noShader;

        const bool singleA8Texture = description.hasTexture &&

                description.hasAlpha8Texture && noShader;

        const bool singleGradient = !description.hasTexture &&

                description.hasGradient && !description.hasBitmap &&

                description.gradientType == ProgramDescription::kGradientLinear;



        if (singleColor) {

            shader.append(gFS_Fast_SingleColor);

            fast = true;

        } else if (singleTexture) {

            if (!description.modulate) {

                shader.append(gFS_Fast_SingleTexture);

            } else {

                shader.append(gFS_Fast_SingleModulateTexture);

            }

            fast = true;

        } else if (singleA8Texture) {

            if (!description.modulate) {

                shader.append(gFS_Fast_SingleA8Texture);

            } else {

                shader.append(gFS_Fast_SingleModulateA8Texture);

            }

            fast = true;

        } else if (singleGradient) {

            if (!description.modulate) {

                shader.append(gFS_Fast_SingleGradient);

            } else {

                shader.append(gFS_Fast_SingleModulateGradient);

            }

            fast = true;

        }



        if (fast) {

            if (DEBUG_PROGRAM_CACHE) {

                PROGRAM_LOGD("*** Fast case:\n");

                PROGRAM_LOGD("*** Generated fragment shader:\n\n");

                printLongString(shader);

            }



            return shader;

        }

    }



    if (description.hasBitmap) {

        shader.append(gFS_Uniforms_BitmapSampler);

    }
@@ -368,13 +490,17 @@ String8 ProgramCache::generateFragmentShader(const ProgramDescription& descripti 
        // Stores the result in fragColor directly

        if (description.hasTexture) {

            if (description.hasAlpha8Texture) {

                shader.append(gFS_Main_FetchA8Texture);

                if (!description.hasGradient && !description.hasBitmap) {

                    shader.append(gFS_Main_FetchA8Texture[modulateOp]);

                }

            } else {

                shader.append(gFS_Main_FetchTexture);

                shader.append(gFS_Main_FetchTexture[modulateOp]);

            }

        } else {

            if ((!description.hasGradient && !description.hasBitmap) || description.modulate) {

                shader.append(gFS_Main_FetchColor);

            }

        }

        if (description.hasGradient) {

            shader.append(gFS_Main_FetchGradient[description.gradientType]);

        }
@@ -387,17 +513,20 @@ String8 ProgramCache::generateFragmentShader(const ProgramDescription& descripti 
        }

        // Case when we have two shaders set

        if (description.hasGradient && description.hasBitmap) {

            int op = description.hasAlpha8Texture ? MODULATE_OP_MODULATE_A8 : modulateOp;

            if (description.isBitmapFirst) {

                shader.append(gFS_Main_BlendShadersBG);

            } else {

                shader.append(gFS_Main_BlendShadersGB);

            }

            shader.append(gFS_Main_BlendShaders_Modulate);

            shader.append(gFS_Main_BlendShaders_Modulate[op]);

        } else {

            if (description.hasGradient) {

                shader.append(gFS_Main_GradientShader_Modulate);

                int op = description.hasAlpha8Texture ? MODULATE_OP_MODULATE_A8 : modulateOp;

                shader.append(gFS_Main_GradientShader_Modulate[op]);

            } else if (description.hasBitmap) {

                shader.append(gFS_Main_BitmapShader_Modulate);

                int op = description.hasAlpha8Texture ? MODULATE_OP_MODULATE_A8 : modulateOp;

                shader.append(gFS_Main_BitmapShader_Modulate[op]);

            }

        }

        // Apply the color op if needed