/**
* Compiles and links the LCD text shader program. If successful, this
* function returns a handle to the newly created shader program; otherwise
* returns 0.
*/
static GLhandleARB
OGLTR_CreateLCDTextProgram()
{
GLhandleARB lcdTextProgram;
GLint loc;
J2dTraceLn(J2D_TRACE_INFO, "OGLTR_CreateLCDTextProgram");
lcdTextProgram = OGLContext_CreateFragmentProgram(lcdTextShaderSource);
if (lcdTextProgram == 0) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"OGLTR_CreateLCDTextProgram: error creating program");
return 0;
}
// "use" the program object temporarily so that we can set the uniforms
j2d_glUseProgramObjectARB(lcdTextProgram);
// set the "uniform" values
loc = j2d_glGetUniformLocationARB(lcdTextProgram, "glyph_tex");
j2d_glUniform1iARB(loc, 0); // texture unit 0
loc = j2d_glGetUniformLocationARB(lcdTextProgram, "dst_tex");
j2d_glUniform1iARB(loc, 1); // texture unit 1
loc = j2d_glGetUniformLocationARB(lcdTextProgram, "invgamma_tex");
j2d_glUniform1iARB(loc, 2); // texture unit 2
loc = j2d_glGetUniformLocationARB(lcdTextProgram, "gamma_tex");
j2d_glUniform1iARB(loc, 3); // texture unit 3
// "unuse" the program object; it will be re-bound later as needed
j2d_glUseProgramObjectARB(0);
return lcdTextProgram;
}
/**
* Disables any pending state associated with the current "glyph mode".
*/
static void
OGLTR_DisableGlyphModeState()
{
switch (glyphMode) {
case MODE_NO_CACHE_LCD:
j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
/* FALLTHROUGH */
case MODE_USE_CACHE_LCD:
j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
j2d_glUseProgramObjectARB(0);
j2d_glActiveTextureARB(GL_TEXTURE3_ARB);
j2d_glDisable(GL_TEXTURE_3D);
j2d_glActiveTextureARB(GL_TEXTURE2_ARB);
j2d_glDisable(GL_TEXTURE_3D);
j2d_glActiveTextureARB(GL_TEXTURE1_ARB);
j2d_glDisable(GL_TEXTURE_2D);
j2d_glActiveTextureARB(GL_TEXTURE0_ARB);
break;
case MODE_NO_CACHE_GRAY:
case MODE_USE_CACHE_GRAY:
case MODE_NOT_INITED:
default:
break;
}
}
void
OGLPaints_ResetPaint(OGLContext *oglc)
{
jubyte ea;
J2dTraceLn(J2D_TRACE_INFO, "OGLPaints_ResetPaint");
RETURN_IF_NULL(oglc);
J2dTraceLn1(J2D_TRACE_VERBOSE, " state=%d", oglc->paintState);
RESET_PREVIOUS_OP();
if (oglc->useMask) {
// switch to texture unit 1, where paint state is currently enabled
j2d_glActiveTextureARB(GL_TEXTURE1_ARB);
}
switch (oglc->paintState) {
case sun_java2d_SunGraphics2D_PAINT_GRADIENT:
j2d_glDisable(GL_TEXTURE_1D);
j2d_glDisable(GL_TEXTURE_GEN_S);
break;
case sun_java2d_SunGraphics2D_PAINT_TEXTURE:
// Note: The texture object used in SetTexturePaint() will
// still be bound at this point, so it is safe to call the following.
OGLSD_RESET_TEXTURE_WRAP(GL_TEXTURE_2D);
j2d_glDisable(GL_TEXTURE_2D);
j2d_glDisable(GL_TEXTURE_GEN_S);
j2d_glDisable(GL_TEXTURE_GEN_T);
break;
case sun_java2d_SunGraphics2D_PAINT_LIN_GRADIENT:
case sun_java2d_SunGraphics2D_PAINT_RAD_GRADIENT:
j2d_glUseProgramObjectARB(0);
j2d_glDisable(GL_TEXTURE_1D);
break;
case sun_java2d_SunGraphics2D_PAINT_ALPHACOLOR:
default:
break;
}
if (oglc->useMask) {
// restore control to texture unit 0
j2d_glActiveTextureARB(GL_TEXTURE0_ARB);
}
// set each component of the current color state to the extra alpha
// value, which will effectively apply the extra alpha to each fragment
// in paint/texturing operations
ea = (jubyte)(oglc->extraAlpha * 0xff + 0.5f);
j2d_glColor4ub(ea, ea, ea, ea);
oglc->pixel = (ea << 24) | (ea << 16) | (ea << 8) | (ea << 0);
oglc->r = ea;
oglc->g = ea;
oglc->b = ea;
oglc->a = ea;
oglc->useMask = JNI_FALSE;
oglc->paintState = -1;
}
/**
* Enables the LCD text shader and updates any related state, such as the
* gamma lookup table textures.
*/
static jboolean
OGLTR_EnableLCDGlyphModeState(GLuint glyphTextureID, jint contrast)
{
// bind the texture containing glyph data to texture unit 0
j2d_glActiveTextureARB(GL_TEXTURE0_ARB);
j2d_glBindTexture(GL_TEXTURE_2D, glyphTextureID);
// bind the texture tile containing destination data to texture unit 1
j2d_glActiveTextureARB(GL_TEXTURE1_ARB);
if (cachedDestTextureID == 0) {
cachedDestTextureID =
OGLContext_CreateBlitTexture(GL_RGB8, GL_RGB,
OGLTR_CACHED_DEST_WIDTH,
OGLTR_CACHED_DEST_HEIGHT);
if (cachedDestTextureID == 0) {
return JNI_FALSE;
}
}
j2d_glBindTexture(GL_TEXTURE_2D, cachedDestTextureID);
// note that GL_TEXTURE_2D was already enabled for texture unit 0,
// but we need to explicitly enable it for texture unit 1
j2d_glEnable(GL_TEXTURE_2D);
// create the LCD text shader, if necessary
if (lcdTextProgram == 0) {
lcdTextProgram = OGLTR_CreateLCDTextProgram();
if (lcdTextProgram == 0) {
return JNI_FALSE;
}
}
// enable the LCD text shader
j2d_glUseProgramObjectARB(lcdTextProgram);
// update the current contrast settings, if necessary
if (lastLCDContrast != contrast) {
if (!OGLTR_UpdateLCDTextContrast(contrast)) {
return JNI_FALSE;
}
lastLCDContrast = contrast;
}
// update the current color settings
if (!OGLTR_UpdateLCDTextColor(contrast)) {
return JNI_FALSE;
}
// bind the gamma LUT textures
j2d_glActiveTextureARB(GL_TEXTURE2_ARB);
j2d_glBindTexture(GL_TEXTURE_3D, invGammaLutTextureID);
j2d_glEnable(GL_TEXTURE_3D);
j2d_glActiveTextureARB(GL_TEXTURE3_ARB);
j2d_glBindTexture(GL_TEXTURE_3D, gammaLutTextureID);
j2d_glEnable(GL_TEXTURE_3D);
return JNI_TRUE;
}
