static jboolean
OGLTR_DrawLCDGlyphViaCache(OGLContext *oglc, OGLSDOps *dstOps,
GlyphInfo *ginfo, jint x, jint y,
jint glyphIndex, jint totalGlyphs,
jboolean rgbOrder, jint contrast)
{
CacheCellInfo *cell;
jint dx1, dy1, dx2, dy2;
jfloat dtx1, dty1, dtx2, dty2;
if (glyphMode != MODE_USE_CACHE_LCD) {
OGLTR_DisableGlyphModeState();
CHECK_PREVIOUS_OP(GL_TEXTURE_2D);
j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
if (glyphCache == NULL) {
if (!OGLTR_InitGlyphCache(JNI_TRUE)) {
return JNI_FALSE;
}
}
if (rgbOrder != lastRGBOrder) {
// need to invalidate the cache in this case; see comments
// for lastRGBOrder above
AccelGlyphCache_Invalidate(glyphCache);
lastRGBOrder = rgbOrder;
}
if (!OGLTR_EnableLCDGlyphModeState(glyphCache->cacheID, contrast)) {
return JNI_FALSE;
}
// when a fragment shader is enabled, the texture function state is
// ignored, so the following line is not needed...
// OGLC_UPDATE_TEXTURE_FUNCTION(oglc, GL_MODULATE);
glyphMode = MODE_USE_CACHE_LCD;
}
if (ginfo->cellInfo == NULL) {
// rowBytes will always be a multiple of 3, so the following is safe
j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, ginfo->rowBytes / 3);
// make sure the glyph cache texture is bound to texture unit 0
j2d_glActiveTextureARB(GL_TEXTURE0_ARB);
// attempt to add glyph to accelerated glyph cache
OGLTR_AddToGlyphCache(ginfo, rgbOrder);
if (ginfo->cellInfo == NULL) {
// we'll just no-op in the rare case that the cell is NULL
return JNI_TRUE;
}
}
cell = (CacheCellInfo *) (ginfo->cellInfo);
cell->timesRendered++;
// location of the glyph in the destination's coordinate space
dx1 = x;
dy1 = y;
dx2 = dx1 + ginfo->width;
dy2 = dy1 + ginfo->height;
// copy destination into second cached texture, if necessary
OGLTR_UpdateCachedDestination(dstOps, ginfo,
dx1, dy1, dx2, dy2,
glyphIndex, totalGlyphs);
// texture coordinates of the destination tile
dtx1 = ((jfloat)(dx1 - cachedDestBounds.x1)) / OGLTR_CACHED_DEST_WIDTH;
dty1 = ((jfloat)(cachedDestBounds.y2 - dy1)) / OGLTR_CACHED_DEST_HEIGHT;
dtx2 = ((jfloat)(dx2 - cachedDestBounds.x1)) / OGLTR_CACHED_DEST_WIDTH;
dty2 = ((jfloat)(cachedDestBounds.y2 - dy2)) / OGLTR_CACHED_DEST_HEIGHT;
// render composed texture to the destination surface
j2d_glBegin(GL_QUADS);
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx1, cell->ty1);
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty1);
j2d_glVertex2i(dx1, dy1);
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx2, cell->ty1);
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty1);
j2d_glVertex2i(dx2, dy1);
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx2, cell->ty2);
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty2);
j2d_glVertex2i(dx2, dy2);
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx1, cell->ty2);
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty2);
j2d_glVertex2i(dx1, dy2);
j2d_glEnd();
return JNI_TRUE;
}
static jboolean
OGLTR_DrawLCDGlyphNoCache(OGLContext *oglc, OGLSDOps *dstOps,
GlyphInfo *ginfo, jint x, jint y,
jint rowBytesOffset,
jboolean rgbOrder, jint contrast)
{
GLfloat tx1, ty1, tx2, ty2;
GLfloat dtx1, dty1, dtx2, dty2;
jint tw, th;
jint sx, sy, sw, sh, dxadj, dyadj;
jint x0;
jint w = ginfo->width;
jint h = ginfo->height;
GLenum pixelFormat = rgbOrder ? GL_RGB : GL_BGR;
if (glyphMode != MODE_NO_CACHE_LCD) {
OGLTR_DisableGlyphModeState();
CHECK_PREVIOUS_OP(GL_TEXTURE_2D);
j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
if (oglc->blitTextureID == 0) {
if (!OGLContext_InitBlitTileTexture(oglc)) {
return JNI_FALSE;
}
}
if (!OGLTR_EnableLCDGlyphModeState(oglc->blitTextureID, contrast)) {
return JNI_FALSE;
}
// when a fragment shader is enabled, the texture function state is
// ignored, so the following line is not needed...
// OGLC_UPDATE_TEXTURE_FUNCTION(oglc, GL_MODULATE);
glyphMode = MODE_NO_CACHE_LCD;
}
// rowBytes will always be a multiple of 3, so the following is safe
j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, ginfo->rowBytes / 3);
x0 = x;
tx1 = 0.0f;
ty1 = 0.0f;
dtx1 = 0.0f;
dty2 = 0.0f;
tw = OGLTR_NOCACHE_TILE_SIZE;
th = OGLTR_NOCACHE_TILE_SIZE;
for (sy = 0; sy < h; sy += th, y += th) {
x = x0;
sh = ((sy + th) > h) ? (h - sy) : th;
for (sx = 0; sx < w; sx += tw, x += tw) {
sw = ((sx + tw) > w) ? (w - sx) : tw;
// update the source pointer offsets
j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
// copy LCD mask into glyph texture tile
j2d_glActiveTextureARB(GL_TEXTURE0_ARB);
j2d_glTexSubImage2D(GL_TEXTURE_2D, 0,
0, 0, sw, sh,
pixelFormat, GL_UNSIGNED_BYTE,
ginfo->image + rowBytesOffset);
// update the lower-right glyph texture coordinates
tx2 = ((GLfloat)sw) / OGLC_BLIT_TILE_SIZE;
ty2 = ((GLfloat)sh) / OGLC_BLIT_TILE_SIZE;
// this accounts for lower-left origin of the destination region
dxadj = dstOps->xOffset + x;
dyadj = dstOps->yOffset + dstOps->height - (y + sh);
// copy destination into cached texture tile (the lower-left
// corner of the destination region will be positioned at the
// lower-left corner (0,0) of the texture)
j2d_glActiveTextureARB(GL_TEXTURE1_ARB);
j2d_glCopyTexSubImage2D(GL_TEXTURE_2D, 0,
0, 0,
dxadj, dyadj,
sw, sh);
// update the remaining destination texture coordinates
dtx2 = ((GLfloat)sw) / OGLTR_CACHED_DEST_WIDTH;
dty1 = ((GLfloat)sh) / OGLTR_CACHED_DEST_HEIGHT;
// render composed texture to the destination surface
j2d_glBegin(GL_QUADS);
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx1, ty1);
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty1);
j2d_glVertex2i(x, y);
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx2, ty1);
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty1);
j2d_glVertex2i(x + sw, y);
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx2, ty2);
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty2);
j2d_glVertex2i(x + sw, y + sh);
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx1, ty2);
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty2);
j2d_glVertex2i(x, y + sh);
j2d_glEnd();
}
}
return JNI_TRUE;
}
/**
* Used to track whether we are within a series of simple primitive operations
* or texturing operations. The op parameter determines the nature of the
* operation that is to follow. Valid values for this op parameter are:
*
* GL_QUADS
* GL_LINES
* GL_LINE_LOOP
* GL_LINE_STRIP
* (basically any of the valid parameters for glBegin())
*
* GL_TEXTURE_2D
* GL_TEXTURE_RECTANGLE_ARB
*
* OGL_STATE_RESET
* OGL_STATE_CHANGE
* OGL_STATE_MASK_OP
* OGL_STATE_GLYPH_OP
*
* Note that the above constants are guaranteed to be unique values. The
* last few are defined to be negative values to differentiate them from
* the core GL* constants, which are defined to be non-negative.
*
* For simple primitives, this method allows us to batch similar primitives
* within the same glBegin()/glEnd() pair. For example, if we have 100
* consecutive FILL_RECT operations, we only have to call glBegin(GL_QUADS)
* for the first op, and then subsequent operations will consist only of
* glVertex*() calls, which helps improve performance. The glEnd() call
* only needs to be issued before an operation that cannot happen within a
* glBegin()/glEnd() pair (e.g. updating the clip), or one that requires a
* different primitive mode (e.g. GL_LINES).
*
* For operations that involve texturing, this method helps us to avoid
* calling glEnable(GL_TEXTURE_2D) and glDisable(GL_TEXTURE_2D) around each
* operation. For example, if we have an alternating series of ISO_BLIT
* and MASK_BLIT operations (both of which involve texturing), we need
* only to call glEnable(GL_TEXTURE_2D) before the first ISO_BLIT operation.
* The glDisable(GL_TEXTURE_2D) call only needs to be issued before an
* operation that cannot (or should not) happen while texturing is enabled
* (e.g. a context change, or a simple primitive operation like GL_QUADS).
*/
void
OGLRenderQueue_CheckPreviousOp(jint op)
{
if (previousOp == op) {
// The op is the same as last time, so we can return immediately.
return;
}
J2dTraceLn1(J2D_TRACE_VERBOSE,
"OGLRenderQueue_CheckPreviousOp: new op=%d", op);
switch (previousOp) {
case GL_TEXTURE_2D:
case GL_TEXTURE_RECTANGLE_ARB:
if (op == OGL_STATE_CHANGE) {
// Optimization: Certain state changes (those marked as
// OGL_STATE_CHANGE) are allowed while texturing is enabled.
// In this case, we can allow previousOp to remain as it is and
// then return early.
return;
} else {
// Otherwise, op must be a primitive operation, or a reset, so
// we will disable texturing.
j2d_glDisable(previousOp);
// This next step of binding to zero should not be strictly
// necessary, but on some older Nvidia boards (e.g. GeForce 2)
// problems will arise if GL_TEXTURE_2D and
// GL_TEXTURE_RECTANGLE_ARB are bound at the same time, so we
// will do this just to be safe.
j2d_glBindTexture(previousOp, 0);
}
break;
case OGL_STATE_MASK_OP:
OGLVertexCache_DisableMaskCache(oglc);
break;
case OGL_STATE_GLYPH_OP:
OGLTR_DisableGlyphVertexCache(oglc);
break;
case OGL_STATE_PGRAM_OP:
OGLRenderer_DisableAAParallelogramProgram();
break;
case OGL_STATE_RESET:
case OGL_STATE_CHANGE:
// No-op
break;
default:
// In this case, op must be one of:
// - the start of a different primitive type (glBegin())
// - a texturing operation
// - a state change (not allowed within glBegin()/glEnd() pairs)
// - a reset
// so we must first complete the previous primitive operation.
j2d_glEnd();
break;
}
switch (op) {
case GL_TEXTURE_2D:
case GL_TEXTURE_RECTANGLE_ARB:
// We are starting a texturing operation, so enable texturing.
j2d_glEnable(op);
break;
case OGL_STATE_MASK_OP:
OGLVertexCache_EnableMaskCache(oglc);
break;
case OGL_STATE_GLYPH_OP:
OGLTR_EnableGlyphVertexCache(oglc);
break;
case OGL_STATE_PGRAM_OP:
OGLRenderer_EnableAAParallelogramProgram();
break;
case OGL_STATE_RESET:
case OGL_STATE_CHANGE:
// No-op
break;
default:
// We are starting a primitive operation, so call glBegin() with
// the given primitive type.
j2d_glBegin(op);
break;
}
previousOp = op;
}
