diff options
-rw-r--r-- | src/gui/painting/painting.pri | 2 | ||||
-rw-r--r-- | src/opengl/gl2paintengineex/qglengineshadermanager.cpp | 191 | ||||
-rw-r--r-- | src/opengl/gl2paintengineex/qglengineshadersource_p.h | 66 | ||||
-rw-r--r-- | src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp | 58 | ||||
-rw-r--r-- | src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h | 2 | ||||
-rw-r--r-- | src/opengl/qglshaderprogram.cpp | 67 | ||||
-rw-r--r-- | src/opengl/qglshaderprogram.h | 4 | ||||
-rw-r--r-- | src/plugins/imageformats/jpeg/qjpeghandler.cpp | 285 | ||||
-rw-r--r-- | src/plugins/imageformats/jpeg/qjpeghandler.h | 3 | ||||
-rw-r--r-- | tests/auto/qimagereader/tst_qimagereader.cpp | 10 |
10 files changed, 451 insertions, 237 deletions
diff --git a/src/gui/painting/painting.pri b/src/gui/painting/painting.pri index 0b1e79a..a6cc9c7 100644 --- a/src/gui/painting/painting.pri +++ b/src/gui/painting/painting.pri @@ -383,7 +383,7 @@ neon { DEFINES += QT_HAVE_NEON HEADERS += painting/qdrawhelper_neon_p.h SOURCES += painting/qdrawhelper_neon.cpp - QMAKE.CXXFLAGS *= -mfpu=neon + QMAKE_CXXFLAGS *= -mfpu=neon } contains(QT_CONFIG, zlib) { diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp index 1187c2d..9d545b9 100644 --- a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp +++ b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp @@ -170,13 +170,15 @@ QGLEngineSharedShaders::QGLEngineSharedShaders(const QGLContext* context) source.append(qShaderSnippets[MainVertexShader]); source.append(qShaderSnippets[PositionOnlyVertexShader]); vertexShader = new QGLShader(QGLShader::Vertex, context, this); - vertexShader->compileSourceCode(source); + if (!vertexShader->compileSourceCode(source)) + qWarning("Vertex shader for simpleShaderProg (MainVertexShader & PositionOnlyVertexShader) failed to compile"); source.clear(); source.append(qShaderSnippets[MainFragmentShader]); source.append(qShaderSnippets[ShockingPinkSrcFragmentShader]); fragShader = new QGLShader(QGLShader::Fragment, context, this); - fragShader->compileSourceCode(source); + if (!fragShader->compileSourceCode(source)) + qWarning("Fragment shader for simpleShaderProg (MainFragmentShader & ShockingPinkSrcFragmentShader) failed to compile"); simpleShaderProg = new QGLShaderProgram(context, this); simpleShaderProg->addShader(vertexShader); @@ -193,13 +195,15 @@ QGLEngineSharedShaders::QGLEngineSharedShaders(const QGLContext* context) source.append(qShaderSnippets[MainWithTexCoordsVertexShader]); source.append(qShaderSnippets[UntransformedPositionVertexShader]); vertexShader = new QGLShader(QGLShader::Vertex, context, this); - vertexShader->compileSourceCode(source); + if (!vertexShader->compileSourceCode(source)) + qWarning("Vertex shader for blitShaderProg (MainWithTexCoordsVertexShader & UntransformedPositionVertexShader) failed to compile"); source.clear(); source.append(qShaderSnippets[MainFragmentShader]); source.append(qShaderSnippets[ImageSrcFragmentShader]); fragShader = new QGLShader(QGLShader::Fragment, context, this); - fragShader->compileSourceCode(source); + if (!fragShader->compileSourceCode(source)) + qWarning("Fragment shader for blitShaderProg (MainFragmentShader & ImageSrcFragmentShader) failed to compile"); blitShaderProg = new QGLShaderProgram(context, this); blitShaderProg->addShader(vertexShader); @@ -234,84 +238,95 @@ QGLEngineShaderProg *QGLEngineSharedShaders::findProgramInCache(const QGLEngineS } } - QByteArray source; - source.append(qShaderSnippets[prog.mainFragShader]); - source.append(qShaderSnippets[prog.srcPixelFragShader]); - if (prog.srcPixelFragShader == CustomImageSrcFragmentShader) - source.append(prog.customStageSource); - if (prog.compositionFragShader) - source.append(qShaderSnippets[prog.compositionFragShader]); - if (prog.maskFragShader) - source.append(qShaderSnippets[prog.maskFragShader]); - QGLShader* fragShader = new QGLShader(QGLShader::Fragment, ctxGuard.context(), this); - fragShader->compileSourceCode(source); - - source.clear(); - source.append(qShaderSnippets[prog.mainVertexShader]); - source.append(qShaderSnippets[prog.positionVertexShader]); - QGLShader* vertexShader = new QGLShader(QGLShader::Vertex, ctxGuard.context(), this); - vertexShader->compileSourceCode(source); + QGLShader *vertexShader = 0; + QGLShader *fragShader = 0; + QGLEngineShaderProg *newProg = 0; + bool success = false; + + do { + QByteArray source; + source.append(qShaderSnippets[prog.mainFragShader]); + source.append(qShaderSnippets[prog.srcPixelFragShader]); + if (prog.srcPixelFragShader == CustomImageSrcFragmentShader) + source.append(prog.customStageSource); + if (prog.compositionFragShader) + source.append(qShaderSnippets[prog.compositionFragShader]); + if (prog.maskFragShader) + source.append(qShaderSnippets[prog.maskFragShader]); + fragShader = new QGLShader(QGLShader::Fragment, ctxGuard.context(), this); + QByteArray description; +#if defined(QT_DEBUG) + // Name the shader for easier debugging + description.append("Fragment shader: main="); + description.append(snippetNameStr(prog.mainFragShader)); + description.append(", srcPixel="); + description.append(snippetNameStr(prog.srcPixelFragShader)); + if (prog.compositionFragShader) { + description.append(", composition="); + description.append(snippetNameStr(prog.compositionFragShader)); + } + if (prog.maskFragShader) { + description.append(", mask="); + description.append(snippetNameStr(prog.maskFragShader)); + } + fragShader->setObjectName(QString::fromLatin1(description)); +#endif + if (!fragShader->compileSourceCode(source)) { + qWarning() << "Warning:" << description << "failed to compile!"; + break; + } + source.clear(); + source.append(qShaderSnippets[prog.mainVertexShader]); + source.append(qShaderSnippets[prog.positionVertexShader]); + vertexShader = new QGLShader(QGLShader::Vertex, ctxGuard.context(), this); #if defined(QT_DEBUG) - // Name the shaders for easier debugging - QByteArray description; - description.append("Fragment shader: main="); - description.append(snippetNameStr(prog.mainFragShader)); - description.append(", srcPixel="); - description.append(snippetNameStr(prog.srcPixelFragShader)); - if (prog.compositionFragShader) { - description.append(", composition="); - description.append(snippetNameStr(prog.compositionFragShader)); - } - if (prog.maskFragShader) { - description.append(", mask="); - description.append(snippetNameStr(prog.maskFragShader)); - } - fragShader->setObjectName(QString::fromLatin1(description)); - - description.clear(); - description.append("Vertex shader: main="); - description.append(snippetNameStr(prog.mainVertexShader)); - description.append(", position="); - description.append(snippetNameStr(prog.positionVertexShader)); - vertexShader->setObjectName(QString::fromLatin1(description)); + // Name the shader for easier debugging + description.clear(); + description.append("Vertex shader: main="); + description.append(snippetNameStr(prog.mainVertexShader)); + description.append(", position="); + description.append(snippetNameStr(prog.positionVertexShader)); + vertexShader->setObjectName(QString::fromLatin1(description)); #endif + if (!vertexShader->compileSourceCode(source)) { + qWarning() << "Warning:" << description << "failed to compile!"; + break; + } - QGLEngineShaderProg* newProg = new QGLEngineShaderProg(prog); - - // If the shader program's not found in the cache, create it now. - newProg->program = new QGLShaderProgram(ctxGuard.context(), this); - newProg->program->addShader(vertexShader); - newProg->program->addShader(fragShader); - - // We have to bind the vertex attribute names before the program is linked: - newProg->program->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR); - if (newProg->useTextureCoords) - newProg->program->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR); - if (newProg->useOpacityAttribute) - newProg->program->bindAttributeLocation("opacityArray", QT_OPACITY_ATTR); - - newProg->program->link(); - if (!newProg->program->isLinked()) { - QLatin1String none("none"); - QLatin1String br("\n"); - QString error; - error = QLatin1String("Shader program failed to link,") + newProg = new QGLEngineShaderProg(prog); + + // If the shader program's not found in the cache, create it now. + newProg->program = new QGLShaderProgram(ctxGuard.context(), this); + newProg->program->addShader(vertexShader); + newProg->program->addShader(fragShader); + + // We have to bind the vertex attribute names before the program is linked: + newProg->program->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR); + if (newProg->useTextureCoords) + newProg->program->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR); + if (newProg->useOpacityAttribute) + newProg->program->bindAttributeLocation("opacityArray", QT_OPACITY_ATTR); + + newProg->program->link(); + if (!newProg->program->isLinked()) { + QLatin1String none("none"); + QLatin1String br("\n"); + QString error; + error = QLatin1String("Shader program failed to link,") #if defined(QT_DEBUG) - + br - + QLatin1String(" Shaders Used:") + br - + QLatin1String(" ") + vertexShader->objectName() + QLatin1String(": ") + br - + QLatin1String(vertexShader->sourceCode()) + br - + QLatin1String(" ") + fragShader->objectName() + QLatin1String(": ") + br - + QLatin1String(fragShader->sourceCode()) + br + + br + + QLatin1String(" Shaders Used:") + br + + QLatin1String(" ") + vertexShader->objectName() + QLatin1String(": ") + br + + QLatin1String(vertexShader->sourceCode()) + br + + QLatin1String(" ") + fragShader->objectName() + QLatin1String(": ") + br + + QLatin1String(fragShader->sourceCode()) + br #endif - + QLatin1String(" Error Log:\n") - + QLatin1String(" ") + newProg->program->log(); - qWarning() << error; - delete newProg; // Deletes the QGLShaderProgram in it's destructor - newProg = 0; - } - else { + + QLatin1String(" Error Log:\n") + + QLatin1String(" ") + newProg->program->log(); + qWarning() << error; + break; + } if (cachedPrograms.count() > 30) { // The cache is full, so delete the last 5 programs in the list. // These programs will be least used, as a program us bumped to @@ -323,6 +338,22 @@ QGLEngineShaderProg *QGLEngineSharedShaders::findProgramInCache(const QGLEngineS } cachedPrograms.insert(0, newProg); + + success = true; + } while (false); + + // Clean up everything if we weren't successful + if (!success) { + if (newProg) { + delete newProg; // Also deletes the QGLShaderProgram which in turn deletes the QGLShaders + newProg = 0; + } + else { + if (vertexShader) + delete vertexShader; + if (fragShader) + delete fragShader; + } } return newProg; @@ -364,6 +395,9 @@ QGLEngineShaderManager::~QGLEngineShaderManager() uint QGLEngineShaderManager::getUniformLocation(Uniform id) { + if (!currentShaderProg) + return 0; + QVector<uint> &uniformLocations = currentShaderProg->uniformLocations; if (uniformLocations.isEmpty()) uniformLocations.fill(GLuint(-1), NumUniforms); @@ -468,7 +502,10 @@ void QGLEngineShaderManager::removeCustomStage() QGLShaderProgram* QGLEngineShaderManager::currentProgram() { - return currentShaderProg->program; + if (currentShaderProg) + return currentShaderProg->program; + else + return simpleProgram(); } QGLShaderProgram* QGLEngineShaderManager::simpleProgram() diff --git a/src/opengl/gl2paintengineex/qglengineshadersource_p.h b/src/opengl/gl2paintengineex/qglengineshadersource_p.h index 2407979..46de124 100644 --- a/src/opengl/gl2paintengineex/qglengineshadersource_p.h +++ b/src/opengl/gl2paintengineex/qglengineshadersource_p.h @@ -99,12 +99,15 @@ static const char* const qglslMainWithTexCoordsAndOpacityVertexShader = "\ opacity = opacityArray; \ }"; +// NOTE: We let GL do the perspective correction so texture lookups in the fragment +// shader are also perspective corrected. static const char* const qglslPositionOnlyVertexShader = "\ - attribute highp vec4 vertexCoordsArray;\ - uniform highp mat4 pmvMatrix;\ + attribute highp vec2 vertexCoordsArray;\ + uniform highp mat3 pmvMatrix;\ void setPosition(void)\ {\ - gl_Position = pmvMatrix * vertexCoordsArray;\ + vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \ + gl_Position = vec4(transformedPos.xy, 0.0, transformedPos.z); \ }"; static const char* const qglslUntransformedPositionVertexShader = "\ @@ -116,20 +119,19 @@ static const char* const qglslUntransformedPositionVertexShader = "\ // Pattern Brush - This assumes the texture size is 8x8 and thus, the inverted size is 0.125 static const char* const qglslPositionWithPatternBrushVertexShader = "\ - attribute highp vec4 vertexCoordsArray; \ - uniform highp mat4 pmvMatrix; \ + attribute highp vec2 vertexCoordsArray; \ + uniform highp mat3 pmvMatrix; \ uniform mediump vec2 halfViewportSize; \ uniform highp vec2 invertedTextureSize; \ uniform highp mat3 brushTransform; \ varying highp vec2 patternTexCoords; \ void setPosition(void) { \ - gl_Position = pmvMatrix * vertexCoordsArray;\ - gl_Position.xy = gl_Position.xy / gl_Position.w; \ + vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \ + gl_Position.xy = transformedPos.xy / transformedPos.z; \ mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \ - mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \ + mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1.0); \ mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \ - gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \ - gl_Position.w = invertedHTexCoordsZ; \ + gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \ patternTexCoords.xy = (hTexCoords.xy * 0.125) * invertedHTexCoordsZ; \ }"; @@ -147,20 +149,19 @@ static const char* const qglslPatternBrushSrcFragmentShader = "\ // Linear Gradient Brush static const char* const qglslPositionWithLinearGradientBrushVertexShader = "\ - attribute highp vec4 vertexCoordsArray; \ - uniform highp mat4 pmvMatrix; \ + attribute highp vec2 vertexCoordsArray; \ + uniform highp mat3 pmvMatrix; \ uniform mediump vec2 halfViewportSize; \ uniform highp vec3 linearData; \ uniform highp mat3 brushTransform; \ varying mediump float index; \ void setPosition() { \ - gl_Position = pmvMatrix * vertexCoordsArray;\ - gl_Position.xy = gl_Position.xy / gl_Position.w; \ + vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \ + gl_Position.xy = transformedPos.xy / transformedPos.z; \ mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \ mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \ mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \ - gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \ - gl_Position.w = invertedHTexCoordsZ; \ + gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \ index = (dot(linearData.xy, hTexCoords.xy) * linearData.z) * invertedHTexCoordsZ; \ }"; @@ -178,20 +179,19 @@ static const char* const qglslLinearGradientBrushSrcFragmentShader = "\ // Conical Gradient Brush static const char* const qglslPositionWithConicalGradientBrushVertexShader = "\ - attribute highp vec4 vertexCoordsArray;\ - uniform highp mat4 pmvMatrix;\ + attribute highp vec2 vertexCoordsArray;\ + uniform highp mat3 pmvMatrix;\ uniform mediump vec2 halfViewportSize; \ uniform highp mat3 brushTransform; \ varying highp vec2 A; \ void setPosition(void)\ {\ - gl_Position = pmvMatrix * vertexCoordsArray;\ - gl_Position.xy = gl_Position.xy / gl_Position.w; \ + vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \ + gl_Position.xy = transformedPos.xy / transformedPos.z; \ mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \ mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \ mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \ - gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \ - gl_Position.w = invertedHTexCoordsZ; \ + gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \ A = hTexCoords.xy * invertedHTexCoordsZ; \ }"; @@ -215,8 +215,8 @@ static const char* const qglslConicalGradientBrushSrcFragmentShader = "\n\ // Radial Gradient Brush static const char* const qglslPositionWithRadialGradientBrushVertexShader = "\ - attribute highp vec4 vertexCoordsArray;\ - uniform highp mat4 pmvMatrix;\ + attribute highp vec2 vertexCoordsArray;\ + uniform highp mat3 pmvMatrix;\ uniform mediump vec2 halfViewportSize; \ uniform highp mat3 brushTransform; \ uniform highp vec2 fmp; \ @@ -224,13 +224,12 @@ static const char* const qglslPositionWithRadialGradientBrushVertexShader = "\ varying highp vec2 A; \ void setPosition(void) \ {\ - gl_Position = pmvMatrix * vertexCoordsArray;\ - gl_Position.xy = gl_Position.xy / gl_Position.w; \ + vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \ + gl_Position.xy = transformedPos.xy / transformedPos.z; \ mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \ mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \ mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \ - gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \ - gl_Position.w = invertedHTexCoordsZ; \ + gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \ A = hTexCoords.xy * invertedHTexCoordsZ; \ b = 2.0 * dot(A, fmp); \ }"; @@ -253,20 +252,19 @@ static const char* const qglslRadialGradientBrushSrcFragmentShader = "\ // Texture Brush static const char* const qglslPositionWithTextureBrushVertexShader = "\ - attribute highp vec4 vertexCoordsArray; \ - uniform highp mat4 pmvMatrix; \ + attribute highp vec2 vertexCoordsArray; \ + uniform highp mat3 pmvMatrix; \ uniform mediump vec2 halfViewportSize; \ uniform highp vec2 invertedTextureSize; \ uniform highp mat3 brushTransform; \ varying highp vec2 textureCoords; \ void setPosition(void) { \ - gl_Position = pmvMatrix * vertexCoordsArray;\ - gl_Position.xy = gl_Position.xy / gl_Position.w; \ + vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \ + gl_Position.xy = transformedPos.xy / transformedPos.z; \ mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \ mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \ mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \ - gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \ - gl_Position.w = invertedHTexCoordsZ; \ + gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \ textureCoords.xy = (hTexCoords.xy * invertedTextureSize) * gl_Position.w; \ }"; diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp index 8ca2fd4..f52ed92 100644 --- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp +++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp @@ -583,37 +583,37 @@ void QGL2PaintEngineExPrivate::updateMatrix() { // qDebug("QGL2PaintEngineExPrivate::updateMatrix()"); - // We set up the 4x4 transformation matrix on the vertex shaders to - // be the equivalent of glOrtho(0, w, h, 0, -1, 1) * transform: - // - // | 2/width 0 0 -1 | | m11 m21 0 dx | - // | 0 -2/height 0 1 | | m12 m22 0 dy | - // | 0 0 -1 0 | * | 0 0 1 0 | - // | 0 0 0 1 | | m13 m23 0 m33 | - // - // We expand out the multiplication to save the cost of a full 4x4 - // matrix multiplication as most of the components are trivial. const QTransform& transform = q->state()->matrix; - qreal wfactor = 2.0 / width; - qreal hfactor = -2.0 / height; - - pmvMatrix[0][0] = wfactor * transform.m11() - transform.m13(); - pmvMatrix[0][1] = hfactor * transform.m12() + transform.m13(); - pmvMatrix[0][2] = 0.0; - pmvMatrix[0][3] = transform.m13(); - pmvMatrix[1][0] = wfactor * transform.m21() - transform.m23(); - pmvMatrix[1][1] = hfactor * transform.m22() + transform.m23(); - pmvMatrix[1][2] = 0.0; - pmvMatrix[1][3] = transform.m23(); - pmvMatrix[2][0] = 0.0; - pmvMatrix[2][1] = 0.0; - pmvMatrix[2][2] = -1.0; - pmvMatrix[2][3] = 0.0; - pmvMatrix[3][0] = wfactor * transform.dx() - transform.m33(); - pmvMatrix[3][1] = hfactor * transform.dy() + transform.m33(); - pmvMatrix[3][2] = 0.0; - pmvMatrix[3][3] = transform.m33(); + // The projection matrix converts from Qt's coordinate system to GL's coordinate system + // * GL's viewport is 2x2, Qt's is width x height + // * GL has +y -> -y going from bottom -> top, Qt is the other way round + // * GL has [0,0] in the center, Qt has it in the top-left + // + // This results in the Projection matrix below, which is multiplied by the painter's + // transformation matrix, as shown below: + // + // Projection Matrix Painter Transform + // ------------------------------------------------ ------------------------ + // | 2.0 / width | 0.0 | -1.0 | | m11 | m21 | dx | + // | 0.0 | -2.0 / height | 1.0 | * | m12 | m22 | dy | + // | 0.0 | 0.0 | 1.0 | | m13 | m23 | m33 | + // ------------------------------------------------ ------------------------ + // + // NOTE: The resultant matrix is also transposed, as GL expects column-major matracies + + const GLfloat wfactor = 2.0f / width; + const GLfloat hfactor = -2.0f / height; + + pmvMatrix[0][0] = (wfactor * transform.m11()) - transform.m13(); + pmvMatrix[1][0] = (wfactor * transform.m21()) - transform.m23(); + pmvMatrix[2][0] = (wfactor * transform.dx() ) - transform.m33(); + pmvMatrix[0][1] = (hfactor * transform.m12()) + transform.m13(); + pmvMatrix[1][1] = (hfactor * transform.m22()) + transform.m23(); + pmvMatrix[2][1] = (hfactor * transform.dy() ) + transform.m33(); + pmvMatrix[0][2] = transform.m13(); + pmvMatrix[1][2] = transform.m23(); + pmvMatrix[2][2] = transform.m33(); // 1/10000 == 0.0001, so we have good enough res to cover curves // that span the entire widget... diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h index 33ce24d..f1ec6e6 100644 --- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h +++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h @@ -254,7 +254,7 @@ public: GLfloat staticVertexCoordinateArray[8]; GLfloat staticTextureCoordinateArray[8]; - GLfloat pmvMatrix[4][4]; + GLfloat pmvMatrix[3][3]; QGLEngineShaderManager* shaderManager; diff --git a/src/opengl/qglshaderprogram.cpp b/src/opengl/qglshaderprogram.cpp index b4191dc..f9737a56 100644 --- a/src/opengl/qglshaderprogram.cpp +++ b/src/opengl/qglshaderprogram.cpp @@ -2275,6 +2275,42 @@ void QGLShaderProgram::setUniformValue(const char *name, const QMatrix4x4& value \overload Sets the uniform variable at \a location in the current context + to a 2x2 matrix \a value. The matrix elements must be specified + in column-major order. + + \sa setAttributeValue() + \since 4.6.2 +*/ +void QGLShaderProgram::setUniformValue(int location, const GLfloat value[2][2]) +{ + Q_D(QGLShaderProgram); + Q_UNUSED(d); + if (location != -1) + glUniformMatrix2fv(location, 1, GL_FALSE, value[0]); +} + +/*! + \overload + + Sets the uniform variable at \a location in the current context + to a 3x3 matrix \a value. The matrix elements must be specified + in column-major order. + + \sa setAttributeValue() + \since 4.6.2 +*/ +void QGLShaderProgram::setUniformValue(int location, const GLfloat value[3][3]) +{ + Q_D(QGLShaderProgram); + Q_UNUSED(d); + if (location != -1) + glUniformMatrix3fv(location, 1, GL_FALSE, value[0]); +} + +/*! + \overload + + Sets the uniform variable at \a location in the current context to a 4x4 matrix \a value. The matrix elements must be specified in column-major order. @@ -2288,6 +2324,37 @@ void QGLShaderProgram::setUniformValue(int location, const GLfloat value[4][4]) glUniformMatrix4fv(location, 1, GL_FALSE, value[0]); } + +/*! + \overload + + Sets the uniform variable called \a name in the current context + to a 2x2 matrix \a value. The matrix elements must be specified + in column-major order. + + \sa setAttributeValue() + \since 4.6.2 +*/ +void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[2][2]) +{ + setUniformValue(uniformLocation(name), value); +} + +/*! + \overload + + Sets the uniform variable called \a name in the current context + to a 3x3 matrix \a value. The matrix elements must be specified + in column-major order. + + \sa setAttributeValue() + \since 4.6.2 +*/ +void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[3][3]) +{ + setUniformValue(uniformLocation(name), value); +} + /*! \overload diff --git a/src/opengl/qglshaderprogram.h b/src/opengl/qglshaderprogram.h index deeaee2..4eb80dd 100644 --- a/src/opengl/qglshaderprogram.h +++ b/src/opengl/qglshaderprogram.h @@ -216,6 +216,8 @@ public: void setUniformValue(int location, const QMatrix4x2& value); void setUniformValue(int location, const QMatrix4x3& value); void setUniformValue(int location, const QMatrix4x4& value); + void setUniformValue(int location, const GLfloat value[2][2]); + void setUniformValue(int location, const GLfloat value[3][3]); void setUniformValue(int location, const GLfloat value[4][4]); void setUniformValue(int location, const QTransform& value); @@ -242,6 +244,8 @@ public: void setUniformValue(const char *name, const QMatrix4x2& value); void setUniformValue(const char *name, const QMatrix4x3& value); void setUniformValue(const char *name, const QMatrix4x4& value); + void setUniformValue(const char *name, const GLfloat value[2][2]); + void setUniformValue(const char *name, const GLfloat value[3][3]); void setUniformValue(const char *name, const GLfloat value[4][4]); void setUniformValue(const char *name, const QTransform& value); diff --git a/src/plugins/imageformats/jpeg/qjpeghandler.cpp b/src/plugins/imageformats/jpeg/qjpeghandler.cpp index aa239ec..11608ef 100644 --- a/src/plugins/imageformats/jpeg/qjpeghandler.cpp +++ b/src/plugins/imageformats/jpeg/qjpeghandler.cpp @@ -90,9 +90,6 @@ public: QImage scale(); -protected: - int scaledWidth(void) const; - private: QImageSmoothScalerPrivate *d; virtual QRgb *scanLine(const int line = 0, const QImage *src = 0); @@ -140,11 +137,6 @@ void QImageSmoothScalerPrivate::setup(const int srcWidth, const int srcHeight, hasAlpha = hasAlphaChannel; } -int QImageSmoothScaler::scaledWidth() const -{ - return d->cols; -} - QImageSmoothScaler::~QImageSmoothScaler() { delete d; @@ -443,20 +435,18 @@ QImage QImageSmoothScaler::scale() class jpegSmoothScaler : public QImageSmoothScaler { public: - jpegSmoothScaler(struct jpeg_decompress_struct *info, int dstWidth, int dstHeight) - : QImageSmoothScaler(info->output_width, info->output_height, dstWidth, dstHeight) + jpegSmoothScaler(struct jpeg_decompress_struct *info, const QSize& dstSize, const QRect& clipRect) + : QImageSmoothScaler(clipRect.width(), clipRect.height(), + dstSize.width(), dstSize.height()) { - cinfo = info; - cols24Bit = scaledWidth() * 3; - - cacheHeight = 1; - imageCache = QImage( info->output_width, cacheHeight, QImage::Format_RGB32 ); + cinfo = info; + clip = clipRect; + imageCache = QImage(info->output_width, 1, QImage::Format_RGB32); } private: - int cols24Bit; + QRect clip; QImage imageCache; - int cacheHeight; struct jpeg_decompress_struct *cinfo; QRgb *scanLine(const int line = 0, const QImage *src = 0) @@ -468,33 +458,42 @@ private: Q_UNUSED(src); uchar* data = imageCache.bits(); + + // Read ahead if we haven't reached the first clipped scanline yet. + while (int(cinfo->output_scanline) < clip.y() && + cinfo->output_scanline < cinfo->output_height) + jpeg_read_scanlines(cinfo, &data, 1); + + // Read the next scanline. We assume that "line" + // will never be >= clip.height(). jpeg_read_scanlines(cinfo, &data, 1); - out = (QRgb*)imageCache.scanLine(0); + if (cinfo->output_scanline == cinfo->output_height) + jpeg_finish_decompress(cinfo); + + out = ((QRgb*)data) + clip.x(); // // The smooth scale algorithm only works on 32-bit images; // convert from (8|24) bits to 32. // if (cinfo->output_components == 1) { - in = (uchar*)out + scaledWidth(); - for (uint i = scaledWidth(); i--; ) { - in--; + in = data + clip.right(); + for (int i = clip.width(); i--; ) { out[i] = qRgb(*in, *in, *in); + in--; } - } else if (cinfo->out_color_space == JCS_CMYK) { - int cols32Bit = scaledWidth() * 4; - in = (uchar*)out + cols32Bit; - for (uint i = scaledWidth(); i--; ) { - in -= 4; - int k = in[3]; - out[i] = qRgb(k * in[0] / 255, k * in[1] / 255, k * in[2] / 255); - //out[i] = qRgb(in[0], in[1], in[2]); - } - } else { - in = (uchar*)out + cols24Bit; - for (uint i = scaledWidth(); i--; ) { - in -= 3; + } else if (cinfo->out_color_space == JCS_CMYK) { + in = data + clip.right() * 4; + for (int i = clip.width(); i--; ) { + int k = in[3]; + out[i] = qRgb(k * in[0] / 255, k * in[1] / 255, k * in[2] / 255); + in -= 4; + } + } else { + in = data + clip.right() * 3; + for (int i = clip.width(); i--; ) { out[i] = qRgb(in[0], in[1], in[2]); + in -= 3; } } @@ -693,7 +692,7 @@ static bool read_jpeg_format(QIODevice *device, QImage::Format &format) } static bool ensureValidImage(QImage *dest, struct jpeg_decompress_struct *info, - bool dummy = false) + const QSize& size) { QImage::Format format; switch (info->output_components) { @@ -708,13 +707,8 @@ static bool ensureValidImage(QImage *dest, struct jpeg_decompress_struct *info, return false; // unsupported format } - const QSize size(info->output_width, info->output_height); if (dest->size() != size || dest->format() != format) { - static uchar dummyImage[1]; - if (dummy) // Create QImage but don't read the pixels - *dest = QImage(dummyImage, size.width(), size.height(), format); - else - *dest = QImage(size, format); + *dest = QImage(size, format); if (format == QImage::Format_Indexed8) { dest->setColorCount(256); @@ -727,12 +721,9 @@ static bool ensureValidImage(QImage *dest, struct jpeg_decompress_struct *info, } static bool read_jpeg_image(QIODevice *device, QImage *outImage, - QSize scaledSize, int inQuality ) + QSize scaledSize, QRect scaledClipRect, + QRect clipRect, int inQuality ) { -#ifdef QT_NO_IMAGE_SMOOTHSCALE - Q_UNUSED( scaledSize ); -#endif - struct jpeg_decompress_struct cinfo; struct my_jpeg_source_mgr *iod_src = new my_jpeg_source_mgr(device); @@ -757,11 +748,53 @@ static bool read_jpeg_image(QIODevice *device, QImage *outImage, if (quality < 0) quality = 75; -#ifndef QT_NO_IMAGE_SMOOTHSCALE - // If high quality not required, shrink image during decompression - if (scaledSize.isValid() && !scaledSize.isEmpty() && quality < HIGH_QUALITY_THRESHOLD) { - cinfo.scale_denom = qMin(cinfo.image_width / scaledSize.width(), - cinfo.image_width / scaledSize.height()); + // If possible, merge the scaledClipRect into either scaledSize + // or clipRect to avoid doing a separate scaled clipping pass. + // Best results are achieved by clipping before scaling, not after. + if (!scaledClipRect.isEmpty()) { + if (scaledSize.isEmpty() && clipRect.isEmpty()) { + // No clipping or scaling before final clip. + clipRect = scaledClipRect; + scaledClipRect = QRect(); + } else if (scaledSize.isEmpty()) { + // Clipping, but no scaling: combine the clip regions. + scaledClipRect.translate(clipRect.topLeft()); + clipRect = scaledClipRect.intersected(clipRect); + scaledClipRect = QRect(); + } else if (clipRect.isEmpty()) { + // No clipping, but scaling: if we can map back to an + // integer pixel boundary, then clip before scaling. + if ((cinfo.image_width % scaledSize.width()) == 0 && + (cinfo.image_height % scaledSize.height()) == 0) { + int x = scaledClipRect.x() * cinfo.image_width / + scaledSize.width(); + int y = scaledClipRect.y() * cinfo.image_height / + scaledSize.height(); + int width = (scaledClipRect.right() + 1) * + cinfo.image_width / scaledSize.width() - x; + int height = (scaledClipRect.bottom() + 1) * + cinfo.image_height / scaledSize.height() - y; + clipRect = QRect(x, y, width, height); + scaledSize = scaledClipRect.size(); + scaledClipRect = QRect(); + } + } else { + // Clipping and scaling: too difficult to figure out, + // and not a likely use case, so do it the long way. + } + } + + // Determine the scale factor to pass to libjpeg for quick downscaling. + if (!scaledSize.isEmpty()) { + if (clipRect.isEmpty()) { + cinfo.scale_denom = + qMin(cinfo.image_width / scaledSize.width(), + cinfo.image_height / scaledSize.height()); + } else { + cinfo.scale_denom = + qMin(clipRect.width() / scaledSize.width(), + clipRect.height() / scaledSize.height()); + } if (cinfo.scale_denom < 2) { cinfo.scale_denom = 1; } else if (cinfo.scale_denom < 4) { @@ -772,9 +805,19 @@ static bool read_jpeg_image(QIODevice *device, QImage *outImage, cinfo.scale_denom = 8; } cinfo.scale_num = 1; + if (!clipRect.isEmpty()) { + // Correct the scale factor so that we clip accurately. + // It is recommended that the clip rectangle be aligned + // on an 8-pixel boundary for best performance. + while (cinfo.scale_denom > 1 && + ((clipRect.x() % cinfo.scale_denom) != 0 || + (clipRect.y() % cinfo.scale_denom) != 0 || + (clipRect.width() % cinfo.scale_denom) != 0 || + (clipRect.height() % cinfo.scale_denom) != 0)) { + cinfo.scale_denom /= 2; + } + } } -#endif - // If high quality not required, use fast decompression if( quality < HIGH_QUALITY_THRESHOLD ) { @@ -782,54 +825,102 @@ static bool read_jpeg_image(QIODevice *device, QImage *outImage, cinfo.do_fancy_upsampling = FALSE; } + (void) jpeg_calc_output_dimensions(&cinfo); - (void) jpeg_start_decompress(&cinfo); + // Determine the clip region to extract. + QRect imageRect(0, 0, cinfo.output_width, cinfo.output_height); + QRect clip; + if (clipRect.isEmpty()) { + clip = imageRect; + } else if (cinfo.scale_denom == 1) { + clip = clipRect.intersected(imageRect); + } else { + // The scale factor was corrected above to ensure that + // we don't miss pixels when we scale the clip rectangle. + clip = QRect(clipRect.x() / int(cinfo.scale_denom), + clipRect.y() / int(cinfo.scale_denom), + clipRect.width() / int(cinfo.scale_denom), + clipRect.height() / int(cinfo.scale_denom)); + clip = clip.intersected(imageRect); + } #ifndef QT_NO_IMAGE_SMOOTHSCALE - if (scaledSize.isValid() && scaledSize != QSize(cinfo.output_width, cinfo.output_height) + if (scaledSize.isValid() && scaledSize != clip.size() && quality >= HIGH_QUALITY_THRESHOLD) { - jpegSmoothScaler scaler(&cinfo, scaledSize.width(), scaledSize.height()); + (void) jpeg_start_decompress(&cinfo); + + jpegSmoothScaler scaler(&cinfo, scaledSize, clip); *outImage = scaler.scale(); } else #endif { - if (!ensureValidImage(outImage, &cinfo)) + // Allocate memory for the clipped QImage. + if (!ensureValidImage(outImage, &cinfo, clip.size())) longjmp(jerr.setjmp_buffer, 1); - uchar* data = outImage->bits(); - int bpl = outImage->bytesPerLine(); - while (cinfo.output_scanline < cinfo.output_height) { - uchar *d = data + cinfo.output_scanline * bpl; - (void) jpeg_read_scanlines(&cinfo, - &d, - 1); - } - (void) jpeg_finish_decompress(&cinfo); - - if (cinfo.output_components == 3) { - // Expand 24->32 bpp. - for (uint j=0; j<cinfo.output_height; j++) { - uchar *in = outImage->scanLine(j) + cinfo.output_width * 3; - QRgb *out = (QRgb*)outImage->scanLine(j); - - for (uint i=cinfo.output_width; i--;) { - in-=3; - out[i] = qRgb(in[0], in[1], in[2]); + // Avoid memcpy() overhead if grayscale with no clipping. + bool quickGray = (cinfo.output_components == 1 && + clip == imageRect); + if (!quickGray) { + // Ask the jpeg library to allocate a temporary row. + // The library will automatically delete it for us later. + // The libjpeg docs say we should do this before calling + // jpeg_start_decompress(). We can't use "new" here + // because we are inside the setjmp() block and an error + // in the jpeg input stream would cause a memory leak. + JSAMPARRAY rows = (cinfo.mem->alloc_sarray) + ((j_common_ptr)&cinfo, JPOOL_IMAGE, + cinfo.output_width * cinfo.output_components, 1); + + (void) jpeg_start_decompress(&cinfo); + + while (cinfo.output_scanline < cinfo.output_height) { + int y = int(cinfo.output_scanline) - clip.y(); + if (y >= clip.height()) + break; // We've read the entire clip region, so abort. + + (void) jpeg_read_scanlines(&cinfo, rows, 1); + + if (y < 0) + continue; // Haven't reached the starting line yet. + + if (cinfo.output_components == 3) { + // Expand 24->32 bpp. + uchar *in = rows[0] + clip.x() * 3; + QRgb *out = (QRgb*)outImage->scanLine(y); + for (int i = 0; i < clip.width(); ++i) { + *out++ = qRgb(in[0], in[1], in[2]); + in += 3; + } + } else if (cinfo.out_color_space == JCS_CMYK) { + // Convert CMYK->RGB. + uchar *in = rows[0] + clip.x() * 4; + QRgb *out = (QRgb*)outImage->scanLine(y); + for (int i = 0; i < clip.width(); ++i) { + int k = in[3]; + *out++ = qRgb(k * in[0] / 255, k * in[1] / 255, + k * in[2] / 255); + in += 4; + } + } else if (cinfo.output_components == 1) { + // Grayscale. + memcpy(outImage->scanLine(y), + rows[0] + clip.x(), clip.width()); } } - } else if (cinfo.out_color_space == JCS_CMYK) { - for (uint j = 0; j < cinfo.output_height; ++j) { - uchar *in = outImage->scanLine(j) + cinfo.output_width * 4; - QRgb *out = (QRgb*)outImage->scanLine(j); - - for (uint i = cinfo.output_width; i--; ) { - in-=4; - int k = in[3]; - out[i] = qRgb(k * in[0] / 255, k * in[1] / 255, k * in[2] / 255); - } + } else { + // Load unclipped grayscale data directly into the QImage. + (void) jpeg_start_decompress(&cinfo); + while (cinfo.output_scanline < cinfo.output_height) { + uchar *row = outImage->scanLine(cinfo.output_scanline); + (void) jpeg_read_scanlines(&cinfo, &row, 1); } } + + if (cinfo.output_scanline == cinfo.output_height) + (void) jpeg_finish_decompress(&cinfo); + if (cinfo.density_unit == 1) { outImage->setDotsPerMeterX(int(100. * cinfo.X_density / 2.54)); outImage->setDotsPerMeterY(int(100. * cinfo.Y_density / 2.54)); @@ -838,13 +929,15 @@ static bool read_jpeg_image(QIODevice *device, QImage *outImage, outImage->setDotsPerMeterY(int(100. * cinfo.Y_density)); } - if (scaledSize.isValid() && scaledSize != QSize(cinfo.output_width, cinfo.output_height)) + if (scaledSize.isValid() && scaledSize != clip.size()) *outImage = outImage->scaled(scaledSize, Qt::IgnoreAspectRatio, Qt::FastTransformation); } } jpeg_destroy_decompress(&cinfo); delete iod_src; + if (!scaledClipRect.isEmpty()) + *outImage = outImage->copy(scaledClipRect); return !outImage->isNull(); } @@ -1102,7 +1195,7 @@ bool QJpegHandler::read(QImage *image) { if (!canRead()) return false; - return read_jpeg_image(device(), image, scaledSize, quality); + return read_jpeg_image(device(), image, scaledSize, scaledClipRect, clipRect, quality); } bool QJpegHandler::write(const QImage &image) @@ -1113,9 +1206,9 @@ bool QJpegHandler::write(const QImage &image) bool QJpegHandler::supportsOption(ImageOption option) const { return option == Quality -#ifndef QT_NO_IMAGE_SMOOTHSCALE || option == ScaledSize -#endif + || option == ScaledClipRect + || option == ClipRect || option == Size || option == ImageFormat; } @@ -1124,10 +1217,12 @@ QVariant QJpegHandler::option(ImageOption option) const { if (option == Quality) { return quality; -#ifndef QT_NO_IMAGE_SMOOTHSCALE } else if (option == ScaledSize) { return scaledSize; -#endif + } else if (option == ScaledClipRect) { + return scaledClipRect; + } else if (option == ClipRect) { + return clipRect; } else if (option == Size) { if (canRead() && !device()->isSequential()) { qint64 pos = device()->pos(); @@ -1154,10 +1249,12 @@ void QJpegHandler::setOption(ImageOption option, const QVariant &value) { if (option == Quality) quality = value.toInt(); -#ifndef QT_NO_IMAGE_SMOOTHSCALE else if ( option == ScaledSize ) scaledSize = value.toSize(); -#endif + else if ( option == ScaledClipRect ) + scaledClipRect = value.toRect(); + else if ( option == ClipRect ) + clipRect = value.toRect(); } QByteArray QJpegHandler::name() const diff --git a/src/plugins/imageformats/jpeg/qjpeghandler.h b/src/plugins/imageformats/jpeg/qjpeghandler.h index 0a14a88..6870cd6 100644 --- a/src/plugins/imageformats/jpeg/qjpeghandler.h +++ b/src/plugins/imageformats/jpeg/qjpeghandler.h @@ -44,6 +44,7 @@ #include <QtGui/qimageiohandler.h> #include <QtCore/QSize> +#include <QtCore/QRect> QT_BEGIN_NAMESPACE @@ -67,6 +68,8 @@ public: private: int quality; QSize scaledSize; + QRect scaledClipRect; + QRect clipRect; }; QT_END_NAMESPACE diff --git a/tests/auto/qimagereader/tst_qimagereader.cpp b/tests/auto/qimagereader/tst_qimagereader.cpp index 15b1c1c..630cc03 100644 --- a/tests/auto/qimagereader/tst_qimagereader.cpp +++ b/tests/auto/qimagereader/tst_qimagereader.cpp @@ -322,7 +322,15 @@ void tst_QImageReader::setScaledSize_data() QTest::newRow("PPM: test") << "test.ppm" << QSize(10, 10) << QByteArray("ppm"); QTest::newRow("XBM: gnus") << "gnus" << QSize(200, 200) << QByteArray("xbm"); #ifdef QTEST_HAVE_JPEG - QTest::newRow("JPEG: beavis") << "beavis" << QSize(200, 200) << QByteArray("jpeg"); + QTest::newRow("JPEG: beavis A") << "beavis" << QSize(200, 200) << QByteArray("jpeg"); + QTest::newRow("JPEG: beavis B") << "beavis" << QSize(175, 175) << QByteArray("jpeg"); + QTest::newRow("JPEG: beavis C") << "beavis" << QSize(100, 100) << QByteArray("jpeg"); + QTest::newRow("JPEG: beavis D") << "beavis" << QSize(100, 200) << QByteArray("jpeg"); + QTest::newRow("JPEG: beavis E") << "beavis" << QSize(200, 100) << QByteArray("jpeg"); + QTest::newRow("JPEG: beavis F") << "beavis" << QSize(87, 87) << QByteArray("jpeg"); + QTest::newRow("JPEG: beavis G") << "beavis" << QSize(50, 45) << QByteArray("jpeg"); + QTest::newRow("JPEG: beavis H") << "beavis" << QSize(43, 43) << QByteArray("jpeg"); + QTest::newRow("JPEG: beavis I") << "beavis" << QSize(25, 25) << QByteArray("jpeg"); #endif // QTEST_HAVE_JPEG #ifdef QTEST_HAVE_GIF QTest::newRow("GIF: earth") << "earth" << QSize(200, 200) << QByteArray("gif"); |