/*
* Render a bitmap.
*/
static bool
do_blit_bitmap( struct gl_context *ctx,
GLint dstx, GLint dsty,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap )
{
struct intel_context *intel = intel_context(ctx);
struct gl_framebuffer *fb = ctx->DrawBuffer;
struct intel_renderbuffer *irb;
GLfloat tmpColor[4];
GLubyte ubcolor[4];
GLuint color;
GLsizei bitmap_width = width;
GLsizei bitmap_height = height;
GLint px, py;
GLuint stipple[32];
GLint orig_dstx = dstx;
GLint orig_dsty = dsty;
/* Update draw buffer bounds */
_mesa_update_state(ctx);
if (ctx->Depth.Test) {
/* The blit path produces incorrect results when depth testing is on.
* It seems the blit Z coord is always 1.0 (the far plane) so fragments
* will likely be obscured by other, closer geometry.
*/
return false;
}
intel_prepare_render(intel);
if (fb->_NumColorDrawBuffers != 1) {
perf_debug("accelerated glBitmap() only supports rendering to a "
"single color buffer\n");
return false;
}
irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
if (_mesa_is_bufferobj(unpack->BufferObj)) {
bitmap = map_pbo(ctx, width, height, unpack, bitmap);
if (bitmap == NULL)
return true; /* even though this is an error, we're done */
}
COPY_4V(tmpColor, ctx->Current.RasterColor);
if (_mesa_need_secondary_color(ctx)) {
ADD_3V(tmpColor, tmpColor, ctx->Current.RasterSecondaryColor);
}
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[0], tmpColor[0]);
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[1], tmpColor[1]);
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[2], tmpColor[2]);
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[3], tmpColor[3]);
switch (irb->mt->format) {
case MESA_FORMAT_B8G8R8A8_UNORM:
case MESA_FORMAT_B8G8R8X8_UNORM:
color = PACK_COLOR_8888(ubcolor[3], ubcolor[0], ubcolor[1], ubcolor[2]);
break;
case MESA_FORMAT_B5G6R5_UNORM:
color = PACK_COLOR_565(ubcolor[0], ubcolor[1], ubcolor[2]);
break;
default:
perf_debug("Unsupported format %s in accelerated glBitmap()\n",
_mesa_get_format_name(irb->mt->format));
return false;
}
if (!intel_check_blit_fragment_ops(ctx, tmpColor[3] == 1.0F))
return false;
/* Clip to buffer bounds and scissor. */
if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
fb->_Xmax, fb->_Ymax,
&dstx, &dsty, &width, &height))
goto out;
dsty = y_flip(fb, dsty, height);
#define DY 32
#define DX 32
/* Chop it all into chunks that can be digested by hardware: */
for (py = 0; py < height; py += DY) {
for (px = 0; px < width; px += DX) {
int h = MIN2(DY, height - py);
int w = MIN2(DX, width - px);
GLuint sz = ALIGN(ALIGN(w,8) * h, 64)/8;
GLenum logic_op = ctx->Color.ColorLogicOpEnabled ?
ctx->Color.LogicOp : GL_COPY;
assert(sz <= sizeof(stipple));
memset(stipple, 0, sz);
/* May need to adjust this when padding has been introduced in
* sz above:
*
* Have to translate destination coordinates back into source
* coordinates.
*/
int count = get_bitmap_rect(bitmap_width, bitmap_height, unpack,
bitmap,
-orig_dstx + (dstx + px),
-orig_dsty + y_flip(fb, dsty + py, h),
w, h,
(GLubyte *)stipple,
8,
_mesa_is_winsys_fbo(fb));
if (count == 0)
continue;
if (!intelEmitImmediateColorExpandBlit(intel,
irb->mt->cpp,
(GLubyte *)stipple,
sz,
color,
irb->mt->region->pitch,
irb->mt->region->bo,
0,
irb->mt->region->tiling,
dstx + px,
dsty + py,
w, h,
logic_op)) {
return false;
}
if (ctx->Query.CurrentOcclusionObject)
ctx->Query.CurrentOcclusionObject->Result += count;
}
}
out:
if (unlikely(INTEL_DEBUG & DEBUG_SYNC))
intel_batchbuffer_flush(intel);
if (_mesa_is_bufferobj(unpack->BufferObj)) {
/* done with PBO so unmap it now */
ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL);
}
intel_check_front_buffer_rendering(intel);
return true;
}
/*
* Render a bitmap.
*/
static GLboolean
do_blit_bitmap( GLcontext *ctx,
GLint dstx, GLint dsty,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap )
{
struct intel_context *intel = intel_context(ctx);
struct intel_region *dst = intel_drawbuf_region(intel);
GLfloat tmpColor[4];
GLubyte ubcolor[4];
GLuint color8888, color565;
if (!dst)
return GL_FALSE;
if (unpack->BufferObj->Name) {
bitmap = map_pbo(ctx, width, height, unpack, bitmap);
if (bitmap == NULL)
return GL_TRUE; /* even though this is an error, we're done */
}
COPY_4V(tmpColor, ctx->Current.RasterColor);
if (NEED_SECONDARY_COLOR(ctx)) {
ADD_3V(tmpColor, tmpColor, ctx->Current.RasterSecondaryColor);
}
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[0], tmpColor[0]);
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[1], tmpColor[1]);
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[2], tmpColor[2]);
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[3], tmpColor[3]);
color8888 = INTEL_PACKCOLOR8888(ubcolor[0], ubcolor[1], ubcolor[2], ubcolor[3]);
color565 = INTEL_PACKCOLOR565(ubcolor[0], ubcolor[1], ubcolor[2]);
/* Does zoom apply to bitmaps?
*/
if (!intel_check_blit_fragment_ops(ctx) ||
ctx->Pixel.ZoomX != 1.0F ||
ctx->Pixel.ZoomY != 1.0F)
return GL_FALSE;
LOCK_HARDWARE(intel);
if (intel->driDrawable->numClipRects) {
__DRIdrawablePrivate *dPriv = intel->driDrawable;
drm_clip_rect_t *box = dPriv->pClipRects;
drm_clip_rect_t dest_rect;
GLint nbox = dPriv->numClipRects;
GLint srcx = 0, srcy = 0;
GLint orig_screen_x1, orig_screen_y2;
GLuint i;
orig_screen_x1 = dPriv->x + dstx;
orig_screen_y2 = dPriv->y + (dPriv->h - dsty);
/* Do scissoring in GL coordinates:
*/
if (ctx->Scissor.Enabled)
{
GLint x = ctx->Scissor.X;
GLint y = ctx->Scissor.Y;
GLuint w = ctx->Scissor.Width;
GLuint h = ctx->Scissor.Height;
if (!_mesa_clip_to_region(x, y, x+w-1, y+h-1, &dstx, &dsty, &width, &height))
goto out;
}
/* Convert from GL to hardware coordinates:
*/
dsty = dPriv->y + (dPriv->h - dsty - height);
dstx = dPriv->x + dstx;
dest_rect.x1 = dstx < 0 ? 0 : dstx;
dest_rect.y1 = dsty < 0 ? 0 : dsty;
dest_rect.x2 = dstx + width < 0 ? 0 : dstx + width;
dest_rect.y2 = dsty + height < 0 ? 0 : dsty + height;
for (i = 0; i < nbox; i++) {
drm_clip_rect_t rect;
int box_w, box_h;
GLint px, py;
GLuint stipple[32];
if (!intel_intersect_cliprects(&rect, &dest_rect, &box[i]))
continue;
/* Now go back to GL coordinates to figure out what subset of
* the bitmap we are uploading for this cliprect:
*/
box_w = rect.x2 - rect.x1;
box_h = rect.y2 - rect.y1;
srcx = rect.x1 - orig_screen_x1;
srcy = orig_screen_y2 - rect.y2;
#define DY 32
#define DX 32
/* Then, finally, chop it all into chunks that can be
* digested by hardware:
*/
for (py = 0; py < box_h; py += DY) {
for (px = 0; px < box_w; px += DX) {
int h = MIN2(DY, box_h - py);
int w = MIN2(DX, box_w - px);
GLuint sz = ALIGN(ALIGN(w,8) * h, 64)/8;
GLenum logic_op = ctx->Color.ColorLogicOpEnabled ?
ctx->Color.LogicOp : GL_COPY;
assert(sz <= sizeof(stipple));
memset(stipple, 0, sz);
/* May need to adjust this when padding has been introduced in
* sz above:
*/
if (get_bitmap_rect(width, height, unpack,
bitmap,
srcx + px, srcy + py, w, h,
(GLubyte *)stipple,
8,
GL_TRUE) == 0)
continue;
/*
*/
intelEmitImmediateColorExpandBlit( intel,
dst->cpp,
(GLubyte *)stipple,
sz,
(dst->cpp == 2) ? color565 : color8888,
dst->pitch,
dst->buffer,
0,
dst->tiled,
rect.x1 + px,
rect.y2 - (py + h),
w, h,
logic_op);
}
}
}
intel->need_flush = GL_TRUE;
out:
intel_batchbuffer_flush(intel->batch);
}
UNLOCK_HARDWARE(intel);
if (unpack->BufferObj->Name) {
/* done with PBO so unmap it now */
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
unpack->BufferObj);
}
return GL_TRUE;
}