Adding shaders to the lib for rendering simple textured quad and solve the ImageOverlay issue for edit.js

interface/src/ui/ApplicationOverlay.cpp

@@ -127,6 +127,7 @@ void ApplicationOverlay::renderOverlays(RenderArgs* renderArgs) {
     glDisable(GL_LIGHTING);
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    glUseProgram(0);
 
     // give external parties a change to hook in
     emit qApp->renderingOverlay();

interface/src/ui/overlays/ImageOverlay.cpp

@@ -14,6 +14,11 @@
 #include <GeometryCache.h>
 #include <RegisteredMetaTypes.h>
 
+#include "qapplication.h"
+
+#include "gpu/Context.h"
+#include "gpu/StandardShaderLib.h"
+
 ImageOverlay::ImageOverlay() :
     _imageURL(),
     _renderImage(false),
@@ -57,15 +62,42 @@ void ImageOverlay::render(RenderArgs* args) {
         return;
     }
 
+    // TODO: I commented all the code needed to migrate this ImageOverlay rendering from naked gl to gpu::Batch
+    /*gpu::Batch localBatch;
+    gpu::Batch& batch = (args->_batch ? (*args->_batch) : localBatch);
+    static gpu::PipelinePointer drawPipeline;
+    static int texcoordRectLoc = -1;
+    static int colorLoc = -1;
+    if (!drawPipeline) {
+        auto blitProgram = gpu::StandardShaderLib::getProgram(gpu::StandardShaderLib::getDrawTexcoordRectTransformUnitQuadVS, gpu::StandardShaderLib::getDrawColoredTexturePS);
+        gpu::Shader::makeProgram(*blitProgram);
+        texcoordRectLoc = blitProgram->getUniforms().findLocation("texcoordRect");
+        colorLoc = blitProgram->getUniforms().findLocation("color");
+
+        gpu::StatePointer blitState = gpu::StatePointer(new gpu::State());
+        blitState->setBlendFunction(false, gpu::State::SRC_ALPHA, gpu::State::BLEND_OP_ADD, gpu::State::INV_SRC_ALPHA);
+        blitState->setColorWriteMask(true, true, true, true);
+        drawPipeline = gpu::PipelinePointer(gpu::Pipeline::create(blitProgram, blitState));
+    }
+    */
+    // TODO: batch.setPipeline(drawPipeline);
+    glUseProgram(0);
+
     if (_renderImage) {
         glEnable(GL_TEXTURE_2D);
         glBindTexture(GL_TEXTURE_2D, _texture->getID());
-    }
+        // TODO: batch.setResourceTexture(0, _texture->getGPUTexture());
+    } // TODO: else {
+    // TODO:     batch.setResourceTexture(0, args->_whiteTexture);
+    // TODO: }
+
+    // TODO: batch.setViewTransform(Transform());
 
     const float MAX_COLOR = 255.0f;
     xColor color = getColor();
     float alpha = getAlpha();
     glm::vec4 quadColor(color.red / MAX_COLOR, color.green / MAX_COLOR, color.blue / MAX_COLOR, alpha);
+    // TODO: batch._glUniform4fv(colorLoc, 1, (const float*) &quadColor);
 
     int left = _bounds.left();
     int right = _bounds.right() + 1;
@@ -75,6 +107,12 @@ void ImageOverlay::render(RenderArgs* args) {
     glm::vec2 topLeft(left, top);
     glm::vec2 bottomRight(right, bottom);
 
+    // TODO: Transform model;
+    // TODO: model.setTranslation(glm::vec3(0.5f * (right + left), 0.5f * (top + bottom), 0.0f));
+    // TODO: model.setScale(glm::vec3(0.5f * (right - left), 0.5f * (bottom - top), 1.0f));
+    // TODO: batch.setModelTransform(model);
+
+
     // if for some reason our image is not over 0 width or height, don't attempt to render the image
     if (_renderImage) {
         float imageWidth = _texture->getWidth();
@@ -104,15 +142,24 @@ void ImageOverlay::render(RenderArgs* args) {
 
             glm::vec2 texCoordTopLeft(x, y);
             glm::vec2 texCoordBottomRight(x + w, y + h);
+            glm::vec4 texcoordRect(texCoordTopLeft, w, h);
 
+            // TODO: batch._glUniform4fv(texcoordRectLoc, 1, (const float*) &texcoordRect);
+            // TODO: batch.draw(gpu::TRIANGLE_STRIP, 4);
             DependencyManager::get<GeometryCache>()->renderQuad(topLeft, bottomRight, texCoordTopLeft, texCoordBottomRight, quadColor);
         } else {
+            // TODO: batch.draw(gpu::TRIANGLE_STRIP, 4);
             DependencyManager::get<GeometryCache>()->renderQuad(topLeft, bottomRight, quadColor);
         }
         glDisable(GL_TEXTURE_2D);
     } else {
+        // TODO: batch.draw(gpu::TRIANGLE_STRIP, 4);
         DependencyManager::get<GeometryCache>()->renderQuad(topLeft, bottomRight, quadColor);
     }
+
+    // TODO: if (!args->_batch) {
+    // TODO:     args->_context->render(batch);
+    // TODO: }
 }
 
 void ImageOverlay::setProperties(const QScriptValue& properties) {

interface/src/ui/overlays/Overlays.cpp

@@ -115,7 +115,10 @@ void Overlays::renderHUD(RenderArgs* renderArgs) {
             thisOverlay->render(renderArgs);
         }
     }
-    gpu::GLBackend::renderBatch(batch, true);
+
+    renderArgs->_context->syncCache();
+    renderArgs->_context->render(batch);
+//    gpu::GLBackend::renderBatch(batch, true);
 }
 
 unsigned int Overlays::addOverlay(const QString& type, const QScriptValue& properties) {

libraries/gpu/src/gpu/DrawColoredTexture.slf

@@ -0,0 +1,22 @@
+<@include gpu/Config.slh@>
+<$VERSION_HEADER$>
+//  Generated on <$_SCRIBE_DATE$>
+//
+//  Draw texture 0 fetched at texcoord.xy, Blend with color uniform
+//
+//  Created by Sam Gateau on 7/12/2015
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+
+uniform sampler2D colorMap;
+uniform vec4 color;
+
+varying vec2 varTexcoord;
+
+void main(void) {
+    gl_FragColor = texture2D(colorMap, varTexcoord) * color;
+}

libraries/gpu/src/gpu/DrawTexcoordRectTransformUnitQuad.slv

@@ -0,0 +1,39 @@
+<@include gpu/Config.slh@>
+<$VERSION_HEADER$>
+//  Generated on <$_SCRIBE_DATE$>
+//
+//  Draw and transform the unit quad [-1,-1 -> 1,1]
+//  Transform the normalized texcoords [0, 1] to be in the range [texcoordRect.xy, texcoordRect.xy + texcoordRect.zw]
+//  Simply draw a Triangle_strip of 2 triangles, no input buffers or index buffer needed
+//
+//  Created by Sam Gateau on 6/22/2015
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+<@include gpu/Transform.slh@>
+
+<$declareStandardTransform()$>
+
+uniform vec4 texcoordRect;
+
+varying vec2 varTexcoord;
+
+void main(void) {
+    const vec4 UNIT_QUAD[4] = vec4[4](
+        vec4(-1.0, -1.0, 0.0, 1.0),
+        vec4(1.0, -1.0, 0.0, 1.0),
+        vec4(-1.0, 1.0, 0.0, 1.0),
+        vec4(1.0, 1.0, 0.0, 1.0)
+    );
+    vec4 pos = UNIT_QUAD[gl_VertexID];
+
+    // standard transform
+    TransformCamera cam = getTransformCamera();
+    TransformObject obj = getTransformObject();
+    <$transformModelToClipPos(cam, obj, pos, gl_Position)$>
+
+    varTexcoord = ((pos.xy + 1) * 0.5) * texcoordRect.zw + texcoordRect.xy;
+}

libraries/gpu/src/gpu/StandardShaderLib.cpp

@@ -13,14 +13,46 @@
 #include "StandardShaderLib.h"
 
 #include "DrawTransformUnitQuad_vert.h"
+#include "DrawTexcoordRectTransformUnitQuad_vert.h"
 #include "DrawViewportQuadTransformTexcoord_vert.h"
 #include "DrawTexture_frag.h"
+#include "DrawColoredTexture_frag.h"
 
 using namespace gpu;
 
 ShaderPointer StandardShaderLib::_drawTransformUnitQuadVS;
+ShaderPointer StandardShaderLib::_drawTexcoordRectTransformUnitQuadVS;
 ShaderPointer StandardShaderLib::_drawViewportQuadTransformTexcoordVS;
 ShaderPointer StandardShaderLib::_drawTexturePS;
+ShaderPointer StandardShaderLib::_drawColoredTexturePS;
+StandardShaderLib::ProgramMap StandardShaderLib::_programs;
+
+ShaderPointer StandardShaderLib::getProgram(GetShader getVS, GetShader getPS) {
+
+    auto& programIt = _programs.find(std::pair<GetShader, GetShader>(getVS, getPS));
+    if (programIt != _programs.end()) {
+        return (*programIt).second;
+    } else {
+        auto vs = getVS();
+        auto ps = getPS();
+        auto program = gpu::ShaderPointer(gpu::Shader::createProgram(vs, ps));
+        if (program) {
+            // Program created, let's try to make it
+            if (gpu::Shader::makeProgram((*program))) {
+                // All good, backup and return that program
+                _programs.insert(ProgramMap::value_type(std::pair<GetShader, GetShader>(getVS, getPS), program));
+                return program;
+            } else {
+                // Failed to make the program probably because vs and ps cannot work together?
+            }
+        } else {
+            // Failed to create the program maybe because ps and vs are not true vertex and pixel shaders?
+        }
+    }
+    return ShaderPointer();
+}
+
+
 
 ShaderPointer StandardShaderLib::getDrawTransformUnitQuadVS() {
     if (!_drawTransformUnitQuadVS) {
@@ -29,6 +61,13 @@ ShaderPointer StandardShaderLib::getDrawTransformUnitQuadVS() {
     return _drawTransformUnitQuadVS;
 }
 
+ShaderPointer StandardShaderLib::getDrawTexcoordRectTransformUnitQuadVS() {
+    if (!_drawTexcoordRectTransformUnitQuadVS) {
+        _drawTexcoordRectTransformUnitQuadVS = gpu::ShaderPointer(gpu::Shader::createVertex(std::string(DrawTexcoordRectTransformUnitQuad_vert)));
+    }
+    return _drawTexcoordRectTransformUnitQuadVS;
+}
+
 ShaderPointer StandardShaderLib::getDrawViewportQuadTransformTexcoordVS() {
     if (!_drawViewportQuadTransformTexcoordVS) {
         _drawViewportQuadTransformTexcoordVS = gpu::ShaderPointer(gpu::Shader::createVertex(std::string(DrawViewportQuadTransformTexcoord_vert)));
@@ -42,3 +81,10 @@ ShaderPointer StandardShaderLib::getDrawTexturePS() {
     }
     return _drawTexturePS;
 }
+
+ShaderPointer StandardShaderLib::getDrawColoredTexturePS() {
+    if (!_drawColoredTexturePS) {
+        _drawColoredTexturePS = gpu::ShaderPointer(gpu::Shader::createPixel(std::string(DrawColoredTexture_frag)));
+    }
+    return _drawColoredTexturePS;
+}

libraries/gpu/src/gpu/StandardShaderLib.h

@@ -14,6 +14,7 @@
 #define hifi_gpu_StandardShaderLib_h
 
 #include <assert.h>
+#include <map>
 
 #include "Shader.h"
 
@@ -26,16 +27,30 @@ public:
     // A texcoord attribute is also generated texcoord = [(0,0),(1,1)]
     static ShaderPointer getDrawTransformUnitQuadVS();
 
+    // Shader draw the unit quad objectPos = ([(-1,-1),(1,1)]) and transform it by the full model transform stack (Model, View, Proj). 
+    // A texcoord attribute is also generated covering a rect defined from the uniform vec4 texcoordRect: texcoord = [texcoordRect.xy,texcoordRect.xy + texcoordRect.zw]
+    static ShaderPointer getDrawTexcoordRectTransformUnitQuadVS();
+
     // Shader draws the unit quad in the full viewport clipPos = ([(-1,-1),(1,1)]) and transform the texcoord = [(0,0),(1,1)] by the model transform.
     static ShaderPointer getDrawViewportQuadTransformTexcoordVS();
 
     static ShaderPointer getDrawTexturePS();
+    static ShaderPointer getDrawColoredTexturePS();
+
+    // The shader program combining the shaders available above, so they are unique
+    typedef ShaderPointer (*StandardShaderLib::GetShader) ();
+    static ShaderPointer getProgram(GetShader vs, GetShader ps);
 
 protected:
 
     static ShaderPointer _drawTransformUnitQuadVS;
+    static ShaderPointer _drawTexcoordRectTransformUnitQuadVS;
     static ShaderPointer _drawViewportQuadTransformTexcoordVS;
     static ShaderPointer _drawTexturePS;
+    static ShaderPointer _drawColoredTexturePS;
+
+    typedef std::map<std::pair<GetShader, GetShader>, ShaderPointer> ProgramMap;
+    static ProgramMap _programs;
 };
 
 

libraries/render-utils/src/DeferredLightingEffect.cpp

@@ -114,9 +114,9 @@ void DeferredLightingEffect::init(AbstractViewStateInterface* viewState) {
     loadLightProgram(deferred_light_spot_vert, spot_light_frag, true, _spotLight, _spotLightLocations);
 
     {
-        auto VSFS = gpu::StandardShaderLib::getDrawViewportQuadTransformTexcoordVS();
-        auto PSBlit = gpu::StandardShaderLib::getDrawTexturePS();
-        auto blitProgram = gpu::ShaderPointer(gpu::Shader::createProgram(VSFS, PSBlit));
+        //auto VSFS = gpu::StandardShaderLib::getDrawViewportQuadTransformTexcoordVS();
+        //auto PSBlit = gpu::StandardShaderLib::getDrawTexturePS();
+        auto blitProgram = gpu::StandardShaderLib::getProgram(gpu::StandardShaderLib::getDrawViewportQuadTransformTexcoordVS, gpu::StandardShaderLib::getDrawTexturePS);
         gpu::Shader::makeProgram(*blitProgram);
         gpu::StatePointer blitState = gpu::StatePointer(new gpu::State());
         blitState->setBlendFunction(true,