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Make GL2PaintEngine::drawCachedGlyphs use updateTexture

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Ensures that we have a consistent view of what the last used texture
was, which is critical when deciding whether or not we need to re-bind
the texture or update texture properties.

Change-Id: Ib47eb00abde98d148fc6e569ce3e359b340328fb
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>
This commit is contained in:
Tor Arne Vestbø 2014-12-10 15:26:36 +01:00 committed by Tor Arne Vestbø
parent 37fa842f41
commit 1cc83b575d
2 changed files with 13 additions and 32 deletions
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41
src/gui/opengl/qopenglpaintengine.cpp
View File

@ -697,10 +697,6 @@ void QOpenGL2PaintEngineExPrivate::transferMode(EngineMode newMode)
if (newMode == mode)
return;
if (mode != BrushDrawingMode) {
lastTextureUsed = GLuint(-1);
}
if (newMode == TextDrawingMode) {
shaderManager->setHasComplexGeometry(true);
} else {
@ -1934,35 +1930,23 @@ void QOpenGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngine::GlyphFormat gly
prepareForCachedGlyphDraw(*cache);
}
QOpenGLTextureGlyphCache::FilterMode filterMode = (s->matrix.type() > QTransform::TxTranslate)?QOpenGLTextureGlyphCache::Linear:QOpenGLTextureGlyphCache::Nearest;
if (lastMaskTextureUsed != cache->texture() || cache->filterMode() != filterMode) {
GLenum textureUnit = QT_MASK_TEXTURE_UNIT;
if (glyphFormat == QFontEngine::Format_ARGB)
textureUnit = QT_IMAGE_TEXTURE_UNIT;
if (glyphFormat == QFontEngine::Format_ARGB)
funcs.glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
else
funcs.glActiveTexture(GL_TEXTURE0 + QT_MASK_TEXTURE_UNIT);
QOpenGLTextureGlyphCache::FilterMode filterMode = (s->matrix.type() > QTransform::TxTranslate) ?
QOpenGLTextureGlyphCache::Linear : QOpenGLTextureGlyphCache::Nearest;
// Need to reset the unit here, until we've made drawCachedGlyphs
// use the shared code-path for activating and binding.
lastTextureUnitUsed = QT_UNKNOWN_TEXTURE_UNIT;
GLenum glFilterMode = filterMode == QOpenGLTextureGlyphCache::Linear ? GL_LINEAR : GL_NEAREST;
if (lastMaskTextureUsed != cache->texture()) {
funcs.glBindTexture(GL_TEXTURE_2D, cache->texture());
lastMaskTextureUsed = cache->texture();
}
if (cache->filterMode() != filterMode) {
if (filterMode == QOpenGLTextureGlyphCache::Linear) {
funcs.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
funcs.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
} else {
funcs.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
funcs.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
cache->setFilterMode(filterMode);
}
TextureUpdateMode updateMode = UpdateIfNeeded;
if (cache->filterMode() != filterMode) {
updateMode = ForceUpdate;
cache->setFilterMode(filterMode);
}
updateTexture(textureUnit, cache->texture(), GL_REPEAT, glFilterMode, updateMode);
#if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO)
funcs.glDrawElements(GL_TRIANGLE_STRIP, 6 * numGlyphs, GL_UNSIGNED_SHORT, 0);
funcs.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
@ -2185,7 +2169,6 @@ void QOpenGL2PaintEngineEx::ensureActive()
d->transferMode(BrushDrawingMode);
d->funcs.glViewport(0, 0, d->width, d->height);
d->needsSync = false;
d->lastMaskTextureUsed = 0;
d->shaderManager->setDirty();
d->syncGlState();
for (int i = 0; i < 3; ++i)

4
src/gui/opengl/qopenglpaintengine_p.h
View File

@ -186,8 +186,7 @@ public:
snapToPixelGrid(false),
nativePaintingActive(false),
inverseScale(1),
lastTextureUnitUsed(QT_UNKNOWN_TEXTURE_UNIT),
lastMaskTextureUsed(0)
lastTextureUnitUsed(QT_UNKNOWN_TEXTURE_UNIT)
{ }
~QOpenGL2PaintEngineExPrivate();
@ -306,7 +305,6 @@ public:
GLenum lastTextureUnitUsed;
GLuint lastTextureUsed;
GLuint lastMaskTextureUsed;
bool needsSync;
bool multisamplingAlwaysEnabled;