void
GLScreen::glBufferStencil (const GLMatrix &matrix,
GLVertexBuffer &vertexBuffer,
CompOutput *output)
{
WRAPABLE_HND_FUNCTN (glBufferStencil, matrix, vertexBuffer, output);
GLfloat x = output->x ();
GLfloat y = screen->height () - output->y2 ();
GLfloat x2 = output->x () + output->width ();
GLfloat y2 = screen->height () - output->y2 () + output->height ();
GLfloat vertices[] =
{
x, y, 0,
x, y2, 0,
x2, y, 0,
x2, y2, 0
};
GLushort colorData[] = { 0xffff, 0xffff, 0xffff, 0xffff };
vertexBuffer.begin (GL_TRIANGLE_STRIP);
vertexBuffer.addVertices (4, vertices);
vertexBuffer.addColors (1, colorData);
vertexBuffer.end ();
}
void
PrivateGLScreen::paintBackground (const GLMatrix &transform,
const CompRegion ®ion,
bool transformed)
{
GLVertexBuffer *streamingBuffer = GLVertexBuffer::streamingBuffer ();
GLfloat vertexData[18];
GLushort colorData[4];
BoxPtr pBox = const_cast <Region> (region.handle ())->rects;
int n, nBox = const_cast <Region> (region.handle ())->numRects;
if (!nBox)
return;
if (screen->desktopWindowCount ())
{
if (!backgroundTextures.empty ())
{
backgroundTextures.clear ();
}
backgroundLoaded = false;
return;
}
else
{
if (!backgroundLoaded)
updateScreenBackground ();
backgroundLoaded = true;
}
if (backgroundTextures.empty ())
{
streamingBuffer->begin (GL_TRIANGLES);
n = nBox;
while (n--)
{
vertexData[0] = pBox->x1;
vertexData[1] = pBox->y1;
vertexData[2] = 0.0f;
vertexData[3] = pBox->x1;
vertexData[4] = pBox->y2;
vertexData[5] = 0.0f;
vertexData[6] = pBox->x2;
vertexData[7] = pBox->y1;
vertexData[8] = 0.0f;
vertexData[9] = pBox->x1;
vertexData[10] = pBox->y2;
vertexData[11] = 0.0f;
vertexData[12] = pBox->x2;
vertexData[13] = pBox->y2;
vertexData[14] = 0.0f;
vertexData[15] = pBox->x2;
vertexData[16] = pBox->y1;
vertexData[17] = 0.0f;
streamingBuffer->addVertices (6, vertexData);
pBox++;
}
colorData[0] = colorData[1] = colorData[2] = 0;
colorData[3] = std::numeric_limits <unsigned short>::max ();
streamingBuffer->addColors (1, colorData);
streamingBuffer->end ();
streamingBuffer->render (transform);
}
else
{
n = nBox;
for (unsigned int i = 0; i < backgroundTextures.size (); i++)
{
GLfloat textureData[12];
GLTexture *bg = backgroundTextures[i];
CompRegion r = region & *bg;
pBox = const_cast <Region> (r.handle ())->rects;
nBox = const_cast <Region> (r.handle ())->numRects;
n = nBox;
streamingBuffer->begin (GL_TRIANGLES);
while (n--)
{
GLfloat tx1 = COMP_TEX_COORD_X (bg->matrix (), pBox->x1);
GLfloat tx2 = COMP_TEX_COORD_X (bg->matrix (), pBox->x2);
GLfloat ty1 = COMP_TEX_COORD_Y (bg->matrix (), pBox->y1);
GLfloat ty2 = COMP_TEX_COORD_Y (bg->matrix (), pBox->y2);
vertexData[0] = pBox->x1;
vertexData[1] = pBox->y1;
vertexData[2] = 0.0f;
vertexData[3] = pBox->x1;
vertexData[4] = pBox->y2;
vertexData[5] = 0.0f;
vertexData[6] = pBox->x2;
vertexData[7] = pBox->y1;
vertexData[8] = 0.0f;
vertexData[9] = pBox->x1;
vertexData[10] = pBox->y2;
vertexData[11] = 0.0f;
vertexData[12] = pBox->x2;
vertexData[13] = pBox->y2;
vertexData[14] = 0.0f;
vertexData[15] = pBox->x2;
vertexData[16] = pBox->y1;
vertexData[17] = 0.0f;
textureData[0] = tx1;
textureData[1] = ty1;
textureData[2] = tx1;
textureData[3] = ty2;
textureData[4] = tx2;
textureData[5] = ty1;
textureData[6] = tx1;
textureData[7] = ty2;
textureData[8] = tx2;
textureData[9] = ty2;
textureData[10] = tx2;
textureData[11] = ty1;
streamingBuffer->addVertices (6, vertexData);
streamingBuffer->addTexCoords (0, 6, textureData);
pBox++;
}
streamingBuffer->end ();
if (bg->name ())
{
if (transformed)
bg->enable (GLTexture::Good);
else
bg->enable (GLTexture::Fast);
streamingBuffer->render (transform);
bg->disable ();
}
}
}
}
void
GLScreen::glPaintCompositedOutput (const CompRegion ®ion,
GLFramebufferObject *fbo,
unsigned int mask)
{
WRAPABLE_HND_FUNCTN (glPaintCompositedOutput, region, fbo, mask)
GLMatrix sTransform;
const GLTexture::Matrix & texmatrix = fbo->tex ()->matrix ();
GLVertexBuffer *streamingBuffer = GLVertexBuffer::streamingBuffer ();
streamingBuffer->begin (GL_TRIANGLES);
if (mask & COMPOSITE_SCREEN_DAMAGE_ALL_MASK)
{
GLfloat tx1 = COMP_TEX_COORD_X (texmatrix, 0.0f);
GLfloat tx2 = COMP_TEX_COORD_X (texmatrix, screen->width ());
GLfloat ty1 = 1.0 - COMP_TEX_COORD_Y (texmatrix, 0.0f);
GLfloat ty2 = 1.0 - COMP_TEX_COORD_Y (texmatrix, screen->height ());
const GLfloat vertexData[] = {
0.0f, 0.0f, 0.0f,
0.0f, (float)screen->height (), 0.0f,
(float)screen->width (), 0.0f, 0.0f,
0.0f, (float)screen->height (), 0.0f,
(float)screen->width (), (float)screen->height (), 0.0f,
(float)screen->width (), 0.0f, 0.0f,
};
const GLfloat textureData[] = {
tx1, ty1,
tx1, ty2,
tx2, ty1,
tx1, ty2,
tx2, ty2,
tx2, ty1,
};
streamingBuffer->addVertices (6, &vertexData[0]);
streamingBuffer->addTexCoords (0, 6, &textureData[0]);
}
else
{
BoxPtr pBox = const_cast <Region> (region.handle ())->rects;
int nBox = const_cast <Region> (region.handle ())->numRects;
while (nBox--)
{
GLfloat tx1 = COMP_TEX_COORD_X (texmatrix, pBox->x1);
GLfloat tx2 = COMP_TEX_COORD_X (texmatrix, pBox->x2);
GLfloat ty1 = 1.0 - COMP_TEX_COORD_Y (texmatrix, pBox->y1);
GLfloat ty2 = 1.0 - COMP_TEX_COORD_Y (texmatrix, pBox->y2);
const GLfloat vertexData[] = {
(float)pBox->x1, (float)pBox->y1, 0.0f,
(float)pBox->x1, (float)pBox->y2, 0.0f,
(float)pBox->x2, (float)pBox->y1, 0.0f,
(float)pBox->x1, (float)pBox->y2, 0.0f,
(float)pBox->x2, (float)pBox->y2, 0.0f,
(float)pBox->x2, (float)pBox->y1, 0.0f,
};
const GLfloat textureData[] = {
tx1, ty1,
tx1, ty2,
tx2, ty1,
tx1, ty2,
tx2, ty2,
tx2, ty1,
};
streamingBuffer->addVertices (6, &vertexData[0]);
streamingBuffer->addTexCoords (0, 6, &textureData[0]);
pBox++;
}
}
streamingBuffer->end ();
fbo->tex ()->enable (GLTexture::Fast);
sTransform.toScreenSpace (&screen->fullscreenOutput (), -DEFAULT_Z_CAMERA);
streamingBuffer->render (sTransform);
fbo->tex ()->disable ();
}
void
ResizeScreen::glPaintRectangle (const GLScreenPaintAttrib &sAttrib,
const GLMatrix &transform,
CompOutput *output,
unsigned short *borderColor,
unsigned short *fillColor)
{
GLVertexBuffer *streamingBuffer = GLVertexBuffer::streamingBuffer ();
BoxRec box;
GLMatrix sTransform (transform);
GLfloat vertexData [12];
GLfloat vertexData2[24];
GLint origSrc, origDst;
GLushort fc[4], bc[4];
#ifdef USE_GLES
GLint origSrcAlpha, origDstAlpha;
glGetIntegerv (GL_BLEND_SRC_RGB, &origSrc);
glGetIntegerv (GL_BLEND_DST_RGB, &origDst);
glGetIntegerv (GL_BLEND_SRC_ALPHA, &origSrcAlpha);
glGetIntegerv (GL_BLEND_DST_ALPHA, &origDstAlpha);
#else
glGetIntegerv (GL_BLEND_SRC, &origSrc);
glGetIntegerv (GL_BLEND_DST, &origDst);
#endif
/* Premultiply the alpha values */
bc[3] = (float) borderColor[3] / (float) 65535.0f;
bc[0] = ((float) borderColor[0] / 65535.0f) * bc[3];
bc[1] = ((float) borderColor[1] / 65535.0f) * bc[3];
bc[2] = ((float) borderColor[2] / 65535.0f) * bc[3];
logic.getPaintRectangle (&box);
vertexData[0] = box.x1;
vertexData[1] = box.y1;
vertexData[2] = 0.0f;
vertexData[3] = box.x1;
vertexData[4] = box.y2;
vertexData[5] = 0.0f;
vertexData[6] = box.x2;
vertexData[7] = box.y1;
vertexData[8] = 0.0f;
vertexData[9] = box.x2;
vertexData[10] = box.y2;
vertexData[11] = 0.0f;
// FIXME: this is a quick work-around.
// GL_LINE_LOOP and GL_LINE_STRIP primitive types in the SGX Pvr X11 driver
// take special number of vertices (and reorder them). Thus, usage of
// those line primitive is currently not supported by our GLVertexBuffer
// implementation. This is a quick workaround to make it all work until
// we come up with a better GLVertexBuffer::render(...) function.
vertexData2[0] = box.x1;
vertexData2[1] = box.y1;
vertexData2[2] = 0.0f;
vertexData2[3] = box.x1;
vertexData2[4] = box.y2;
vertexData2[5] = 0.0f;
vertexData2[6] = box.x1;
vertexData2[7] = box.y2;
vertexData2[8] = 0.0f;
vertexData2[9] = box.x2;
vertexData2[10] = box.y2;
vertexData2[11] = 0.0f;
vertexData2[12] = box.x2;
vertexData2[13] = box.y2;
vertexData2[14] = 0.0f;
vertexData2[15] = box.x2;
vertexData2[16] = box.y1;
vertexData2[17] = 0.0f;
vertexData2[18] = box.x2;
vertexData2[19] = box.y1;
vertexData2[20] = 0.0f;
vertexData2[21] = box.x1;
vertexData2[22] = box.y1;
vertexData2[23] = 0.0f;
sTransform.toScreenSpace (output, -DEFAULT_Z_CAMERA);
glEnable (GL_BLEND);
glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
/* fill rectangle */
if (fillColor)
{
fc[3] = fillColor[3];
fc[0] = fillColor[0] * (unsigned long)fc[3] / 65535;
fc[1] = fillColor[1] * (unsigned long)fc[3] / 65535;
fc[2] = fillColor[2] * (unsigned long)fc[3] / 65535;
streamingBuffer->begin (GL_TRIANGLE_STRIP);
streamingBuffer->addColors (1, fc);
streamingBuffer->addVertices (4, &vertexData[0]);
streamingBuffer->end ();
streamingBuffer->render (sTransform);
}
/* draw outline */
static const int borderWidth = 2;
glLineWidth (borderWidth);
streamingBuffer->begin (GL_LINES);
streamingBuffer->addColors (1, borderColor);
streamingBuffer->addVertices (8, &vertexData2[0]);
streamingBuffer->end ();
streamingBuffer->render (sTransform);
glDisable (GL_BLEND);
#ifdef USE_GLES
glBlendFuncSeparate (origSrc, origDst,
origSrcAlpha, origDstAlpha);
#else
glBlendFunc (origSrc, origDst);
#endif
CompositeScreen *cScreen = CompositeScreen::get (screen);
CompRect damage (box.x1 - borderWidth,
box.y1 - borderWidth,
box.x2 - box.x1 + 2 * borderWidth,
box.y2 - box.y1 + 2 * borderWidth);
cScreen->damageRegion (damage);
}
bool
FireScreen::glPaintOutput (const GLScreenPaintAttrib &attrib,
const GLMatrix &transform,
const CompRegion ®ion,
CompOutput *output,
unsigned int mask)
{
bool status = gScreen->glPaintOutput (attrib, transform, region, output, mask);
if ((!init && ps.active) || brightness < 1.0)
{
GLMatrix sTransform = transform;
sTransform.toScreenSpace (output, -DEFAULT_Z_CAMERA);
if (brightness < 1.0)
{
/* cover the screen with a rectangle and darken it
* (coded as two GL_TRIANGLES for GLES compatibility)
*/
GLfloat vertices[18];
GLushort colors[24];
vertices[0] = (GLfloat)output->region ()->extents.x1;
vertices[1] = (GLfloat)output->region ()->extents.y1;
vertices[2] = 0.0f;
vertices[3] = (GLfloat)output->region ()->extents.x1;
vertices[4] = (GLfloat)output->region ()->extents.y2;
vertices[5] = 0.0f;
vertices[6] = (GLfloat)output->region ()->extents.x2;
vertices[7] = (GLfloat)output->region ()->extents.y2;
vertices[8] = 0.0f;
vertices[9] = (GLfloat)output->region ()->extents.x2;
vertices[10] = (GLfloat)output->region ()->extents.y2;
vertices[11] = 0.0f;
vertices[12] = (GLfloat)output->region ()->extents.x2;
vertices[13] = (GLfloat)output->region ()->extents.y1;
vertices[14] = 0.0f;
vertices[15] = (GLfloat)output->region ()->extents.x1;
vertices[16] = (GLfloat)output->region ()->extents.y1;
vertices[17] = 0.0f;
for (int i = 0; i <= 5; ++i)
{
colors[i*4+0] = 0;
colors[i*4+1] = 0;
colors[i*4+2] = 0;
colors[i*4+3] = (1.0 - brightness) * 65535.0f;
}
GLVertexBuffer *stream = GLVertexBuffer::streamingBuffer ();
GLboolean glBlendEnabled = glIsEnabled (GL_BLEND);
if (!glBlendEnabled)
glEnable (GL_BLEND);
stream->begin (GL_TRIANGLES);
stream->addVertices (6, vertices);
stream->addColors (6, colors);
if (stream->end ())
stream->render (sTransform);
/* only disable blending if it was already disabled */
if (!glBlendEnabled)
glDisable (GL_BLEND);
}
if (!init && ps.active)
ps.drawParticles (sTransform);
}
return status;
}
void
ParticleSystem::drawParticles(const GLMatrix &transform)
{
int i, j, k, l;
/* Check that the cache is big enough */
if (vertices_cache.size () < particles.size () * VERTEX_COMPONENTS)
vertices_cache.resize (particles.size () * VERTEX_COMPONENTS);
if (coords_cache.size () < particles.size () * COORD_COMPONENTS)
coords_cache.resize (particles.size () * COORD_COMPONENTS);
if (colors_cache.size () < particles.size () * COLOR_COMPONENTS)
colors_cache.resize (particles.size () * COLOR_COMPONENTS);
if (darken > 0)
if (dcolors_cache.size () < particles.size () * COLOR_COMPONENTS)
dcolors_cache.resize (particles.size () * COLOR_COMPONENTS);
GLboolean glBlendEnabled = glIsEnabled (GL_BLEND);
if (!glBlendEnabled)
glEnable (GL_BLEND);
if (tex)
{
glBindTexture (GL_TEXTURE_2D, tex);
glEnable (GL_TEXTURE_2D);
}
i = j = k = l = 0;
GLfloat w, h;
GLfloat xMinusW, xPlusW, yMinusH, yPlusH;
GLushort r, g, b, a, dark_a;
/* for each particle, use two triangles to display it */
foreach (Particle &part, particles)
{
if (part.life > 0.0f)
{
w = part.width / 2.0f;
h = part.height / 2.0f;
r = part.r * 65535.0f;
g = part.g * 65535.0f;
b = part.b * 65535.0f;
a = part.life * part.a * 65535.0f;
dark_a = part.life * part.a * 65535.0f * darken;
w += w * part.w_mod * part.life;
h += h * part.h_mod * part.life;
xMinusW = part.x - w;
xPlusW = part.x + w;
yMinusH = part.y - h;
yPlusH = part.y + h;
//first triangle
vertices_cache[i + 0] = xMinusW;
vertices_cache[i + 1] = yMinusH;
vertices_cache[i + 2] = part.z;
vertices_cache[i + 3] = xMinusW;
vertices_cache[i + 4] = yPlusH;
vertices_cache[i + 5] = part.z;
vertices_cache[i + 6] = xPlusW;
vertices_cache[i + 7] = yPlusH;
vertices_cache[i + 8] = part.z;
//second triangle
vertices_cache[i + 9] = xPlusW;
vertices_cache[i + 10] = yPlusH;
vertices_cache[i + 11] = part.z;
vertices_cache[i + 12] = xPlusW;
vertices_cache[i + 13] = yMinusH;
vertices_cache[i + 14] = part.z;
vertices_cache[i + 15] = xMinusW;
vertices_cache[i + 16] = yMinusH;
vertices_cache[i + 17] = part.z;
i += 18;
coords_cache[j + 0] = 0.0;
coords_cache[j + 1] = 0.0;
coords_cache[j + 2] = 0.0;
coords_cache[j + 3] = 1.0;
coords_cache[j + 4] = 1.0;
coords_cache[j + 5] = 1.0;
//second
coords_cache[j + 6] = 1.0;
coords_cache[j + 7] = 1.0;
coords_cache[j + 8] = 1.0;
coords_cache[j + 9] = 0.0;
coords_cache[j + 10] = 0.0;
coords_cache[j + 11] = 0.0;
j += 12;
colors_cache[k + 0] = r;
colors_cache[k + 1] = g;
colors_cache[k + 2] = b;
colors_cache[k + 3] = a;
colors_cache[k + 4] = r;
colors_cache[k + 5] = g;
colors_cache[k + 6] = b;
colors_cache[k + 7] = a;
colors_cache[k + 8] = r;
colors_cache[k + 9] = g;
colors_cache[k + 10] = b;
colors_cache[k + 11] = a;
//second
colors_cache[k + 12] = r;
colors_cache[k + 13] = g;
colors_cache[k + 14] = b;
colors_cache[k + 15] = a;
colors_cache[k + 16] = r;
colors_cache[k + 17] = g;
colors_cache[k + 18] = b;
colors_cache[k + 19] = a;
colors_cache[k + 20] = r;
colors_cache[k + 21] = g;
colors_cache[k + 22] = b;
colors_cache[k + 23] = a;
k += 24;
if (darken > 0)
{
dcolors_cache[l + 0] = r;
dcolors_cache[l + 1] = g;
dcolors_cache[l + 2] = b;
dcolors_cache[l + 3] = dark_a;
dcolors_cache[l + 4] = r;
dcolors_cache[l + 5] = g;
dcolors_cache[l + 6] = b;
dcolors_cache[l + 7] = dark_a;
dcolors_cache[l + 8] = r;
dcolors_cache[l + 9] = g;
dcolors_cache[l + 10] = b;
dcolors_cache[l + 11] = dark_a;
//second
dcolors_cache[l + 12] = r;
dcolors_cache[l + 13] = g;
dcolors_cache[l + 14] = b;
dcolors_cache[l + 15] = dark_a;
dcolors_cache[l + 16] = r;
dcolors_cache[l + 17] = g;
dcolors_cache[l + 18] = b;
dcolors_cache[l + 19] = dark_a;
dcolors_cache[l + 20] = r;
dcolors_cache[l + 21] = g;
dcolors_cache[l + 22] = b;
dcolors_cache[l + 23] = dark_a;
l += 24;
}
}
}
GLVertexBuffer *stream = GLVertexBuffer::streamingBuffer ();
if (darken > 0)
{
glBlendFunc (GL_ZERO, GL_ONE_MINUS_SRC_ALPHA);
stream->begin (GL_TRIANGLES);
stream->addVertices (i / 3, &vertices_cache[0]);
stream->addTexCoords (0, j / 2, &coords_cache[0]);
stream->addColors (l / 4, &dcolors_cache[0]);
if (stream->end ())
stream->render (transform);
}
/* draw particles */
glBlendFunc (GL_SRC_ALPHA, blendMode);
stream->begin (GL_TRIANGLES);
stream->addVertices (i / 3, &vertices_cache[0]);
stream->addTexCoords (0, j / 2, &coords_cache[0]);
stream->addColors (k / 4, &colors_cache[0]);
if (stream->end ())
stream->render (transform);
glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glDisable (GL_TEXTURE_2D);
/* only disable blending if it was disabled before */
if (!glBlendEnabled)
glDisable (GL_BLEND);
}
bool
ShowrepaintScreen::glPaintOutput (const GLScreenPaintAttrib &attrib,
const GLMatrix &transform,
const CompRegion ®ion,
CompOutput *output,
unsigned int mask)
{
bool status;
GLMatrix sTransform; // initially identity matrix
unsigned short color[4];
status = gScreen->glPaintOutput (attrib, transform, region, output, mask);
tmpRegion = region.intersected (*output);
if (tmpRegion.isEmpty ())
return status;
sTransform.toScreenSpace (output, -DEFAULT_Z_CAMERA);
color[3] = optionGetIntensity () * 0xffff / 100;
color[0] = (rand () & 7) * color[3] / 8;
color[1] = (rand () & 7) * color[3] / 8;
color[2] = (rand () & 7) * color[3] / 8;
GLboolean glBlendEnabled = glIsEnabled (GL_BLEND);
if (!glBlendEnabled)
glEnable (GL_BLEND);
std::vector<GLfloat> vertices;
/* for each rectangle, use two triangles to display it */
foreach (const CompRect &box, tmpRegion.rects ())
{
//first triangle
vertices.push_back (box.x1 ());
vertices.push_back (box.y1 ());
vertices.push_back (0.0f);
vertices.push_back (box.x1 ());
vertices.push_back (box.y2 ());
vertices.push_back (0.0f);
vertices.push_back (box.x2 ());
vertices.push_back (box.y2 ());
vertices.push_back (0.0f);
//second triangle
vertices.push_back (box.x2 ());
vertices.push_back (box.y2 ());
vertices.push_back (0.0f);
vertices.push_back (box.x2 ());
vertices.push_back (box.y1 ());
vertices.push_back (0.0f);
vertices.push_back (box.x1 ());
vertices.push_back (box.y1 ());
vertices.push_back (0.0f);
}
GLVertexBuffer *stream = GLVertexBuffer::streamingBuffer ();
stream->begin (GL_TRIANGLES);
stream->color4f ((float)color[0] / 65535.0f, (float)color[1] / 65535.0f, (float)color[2] / 65535.0f, (float)color[3] / 65535.0f);
stream->addVertices (vertices.size () / 3, &vertices[0]);
if (stream->end ())
stream->render (sTransform);
stream->colorDefault ();
/* only disable blending if it was disabled before */
if (!glBlendEnabled)
glDisable (GL_BLEND);
return status;
}
void
CompText::draw (const GLMatrix &transform,
float x,
float y,
float alpha) const
{
GLint oldBlendSrc, oldBlendDst;
GLushort colorData[4];
GLfloat textureData[8];
GLfloat vertexData[12];
GLVertexBuffer *streamingBuffer = GLVertexBuffer::streamingBuffer ();
if (texture.empty ())
return;
#ifdef USE_GLES
GLint oldBlendSrcAlpha, oldBlendDstAlpha;
glGetIntegerv (GL_BLEND_SRC_RGB, &oldBlendSrc);
glGetIntegerv (GL_BLEND_DST_RGB, &oldBlendDst);
glGetIntegerv (GL_BLEND_SRC_ALPHA, &oldBlendSrcAlpha);
glGetIntegerv (GL_BLEND_DST_ALPHA, &oldBlendDstAlpha);
#else
glGetIntegerv (GL_BLEND_SRC, &oldBlendSrc);
glGetIntegerv (GL_BLEND_DST, &oldBlendDst);
GLboolean wasBlend;
wasBlend = glIsEnabled (GL_BLEND);
if (!wasBlend)
glEnable (GL_BLEND);
#endif
glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
colorData[0] = alpha * 65535;
colorData[1] = alpha * 65535;
colorData[2] = alpha * 65535;
colorData[3] = alpha * 65535;
for (unsigned int i = 0; i < texture.size (); i++)
{
GLTexture *tex = texture[i];
GLTexture::Matrix m = tex->matrix ();
tex->enable (GLTexture::Good);
streamingBuffer->begin (GL_TRIANGLE_STRIP);
vertexData[0] = x;
vertexData[1] = y - height;
vertexData[2] = 0;
vertexData[3] = x;
vertexData[4] = y;
vertexData[5] = 0;
vertexData[6] = x + width;
vertexData[7] = y - height;
vertexData[8] = 0;
vertexData[9] = x + width;
vertexData[10] = y;
vertexData[11] = 0;
textureData[0] = COMP_TEX_COORD_X (m, 0);
textureData[1] = COMP_TEX_COORD_Y (m, 0);
textureData[2] = COMP_TEX_COORD_X (m, 0);
textureData[3] = COMP_TEX_COORD_Y (m, height);
textureData[4] = COMP_TEX_COORD_X (m, width);
textureData[5] = COMP_TEX_COORD_Y (m, 0);
textureData[6] = COMP_TEX_COORD_X (m, width);
textureData[7] = COMP_TEX_COORD_Y (m, height);
streamingBuffer->addColors (1, colorData);
streamingBuffer->addVertices (4, vertexData);
streamingBuffer->addTexCoords (0, 4, textureData);
streamingBuffer->end ();
streamingBuffer->render (transform);
tex->disable ();
}
#ifdef USE_GLES
glBlendFuncSeparate (oldBlendSrc, oldBlendDst,
oldBlendSrcAlpha, oldBlendDstAlpha);
#else
if (!wasBlend)
glDisable (GL_BLEND);
glBlendFunc (oldBlendSrc, oldBlendDst);
#endif
}
