/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "glheader.h"
#include "enums.h"
#include "image.h"
#include "state.h"
#include "mtypes.h"
#include "macros.h"
#include "swrast/swrast.h"
#include "intel_screen.h"
#include "intel_context.h"
#include "intel_ioctl.h"
#include "intel_batchbuffer.h"
#include "intel_buffers.h"
#include "intel_blit.h"
#include "intel_regions.h"
#include "intel_tris.h"
#include "intel_pixel.h"
#include "intel_fbo.h"
#define FILE_DEBUG_FLAG DEBUG_PIXEL
static struct intel_region *
copypix_src_region(struct intel_context *intel, GLenum type)
{
struct intel_renderbuffer *irb;
switch (type) {
case GL_COLOR:
return intel_readbuf_region(intel);
case GL_DEPTH:
/* Don't think this is really possible execpt at 16bpp, when we have no stencil.
*/
irb = intel_renderbuffer(intel->ctx.ReadBuffer->_DepthBuffer->Wrapped);
if (irb && irb->region && irb->region->cpp == 2)
return irb->region;
break;
case GL_STENCIL:
/* Don't think this is really possible.
*/
break;
case GL_DEPTH_STENCIL_EXT:
/* Does it matter whether it is stencil/depth or depth/stencil?
*/
irb = intel_renderbuffer(intel->ctx.ReadBuffer->_DepthBuffer->Wrapped);
if (irb && irb->region)
return irb->region;
break;
default:
break;
}
return NULL;
}
/* Doesn't work for overlapping regions. Could do a double copy or
* just fallback.
*/
static GLboolean
do_texture_copypixels(GLcontext * ctx,
GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
GLint dstx, GLint dsty, GLenum type)
{
struct intel_context *intel = intel_context(ctx);
struct intel_region *dst = intel_drawbuf_region(intel);
struct intel_region *src = copypix_src_region(intel, type);
struct intel_region *depthreg = NULL;
GLenum src_format;
GLenum src_type;
DBG("%s %d,%d %dx%d --> %d,%d\n", __FUNCTION__,
srcx, srcy, width, height, dstx, dsty);
if (!src || !dst || type != GL_COLOR)
return GL_FALSE;
/* Can't handle overlapping regions. Don't have sufficient control
* over rasterization to pull it off in-place. Punt on these for
* now.
*
* XXX: do a copy to a temporary.
*/
if (src->buffer == dst->buffer) {
drm_clip_rect_t srcbox;
drm_clip_rect_t dstbox;
drm_clip_rect_t tmp;
srcbox.x1 = srcx;
srcbox.y1 = srcy;
srcbox.x2 = srcx + width;
srcbox.y2 = srcy + height;
dstbox.x1 = dstx;
dstbox.y1 = dsty;
dstbox.x2 = dstx + width * ctx->Pixel.ZoomX;
dstbox.y2 = dsty + height * ctx->Pixel.ZoomY;
DBG("src %d,%d %d,%d\n", srcbox.x1, srcbox.y1, srcbox.x2, srcbox.y2);
DBG("dst %d,%d %d,%d (%dx%d) (%f,%f)\n", dstbox.x1, dstbox.y1, dstbox.x2, dstbox.y2,
width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
if (intel_intersect_cliprects(&tmp, &srcbox, &dstbox)) {
DBG("%s: regions overlap\n", __FUNCTION__);
return GL_FALSE;
}
}
intelFlush(&intel->ctx);
intel->vtbl.install_meta_state(intel);
/* Is this true? Also will need to turn depth testing on according
* to state:
*/
intel->vtbl.meta_no_stencil_write(intel);
intel->vtbl.meta_no_depth_write(intel);
/* Set the 3d engine to draw into the destination region:
*/
if (ctx->DrawBuffer->_DepthBuffer &&
ctx->DrawBuffer->_DepthBuffer->Wrapped)
depthreg = (intel_renderbuffer(ctx->DrawBuffer->_DepthBuffer->Wrapped))->region;
intel->vtbl.meta_draw_region(intel, dst, depthreg);
intel->vtbl.meta_import_pixel_state(intel);
if (src->cpp == 2) {
src_format = GL_RGB;
src_type = GL_UNSIGNED_SHORT_5_6_5;
}
else {
src_format = GL_BGRA;
src_type = GL_UNSIGNED_BYTE;
}
/* Set the frontbuffer up as a large rectangular texture.
*/
if (!intel->vtbl.meta_tex_rect_source(intel, src->buffer, 0,
src->pitch,
src->height, src_format, src_type)) {
intel->vtbl.leave_meta_state(intel);
return GL_FALSE;
}
intel->vtbl.meta_texture_blend_replace(intel);
LOCK_HARDWARE(intel);
{
int dstbufHeight = ctx->DrawBuffer->Height;
/* convert from gl to hardware coords */
srcy = ctx->ReadBuffer->Height - srcy - height;
/* Clip against the source region. This is the only source
* clipping we do. XXX: Just set the texcord wrap mode to clamp
* or similar.
*
*/
if (0) {
GLint orig_x = srcx;
GLint orig_y = srcy;
if (!_mesa_clip_to_region(0, 0, ctx->ReadBuffer->Width - 1,
ctx->ReadBuffer->Height - 1,
&srcx, &srcy, &width, &height))
goto out;
dstx += srcx - orig_x;
dsty += (srcy - orig_y) * ctx->Pixel.ZoomY;
}
/* Just use the regular cliprect mechanism... Does this need to
* even hold the lock???
*/
intel_meta_draw_quad(intel,
dstx,
dstx + width * ctx->Pixel.ZoomX,
dstbufHeight - (dsty + height * ctx->Pixel.ZoomY),
dstbufHeight - (dsty), 0, /* XXX: what z value? */
0x00ff00ff,
srcx, srcx + width, srcy, srcy + height);
out:
intel->vtbl.leave_meta_state(intel);
intel_batchbuffer_flush(intel->batch);
}
UNLOCK_HARDWARE(intel);
DBG("%s: success\n", __FUNCTION__);
return GL_TRUE;
}
/**
* CopyPixels with the blitter. Don't support zooming, pixel transfer, etc.
*/
static GLboolean
do_blit_copypixels(GLcontext * ctx,
GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
GLint dstx, GLint dsty, GLenum type)
{
struct intel_context *intel = intel_context(ctx);
struct gl_framebuffer *fb = ctx->DrawBuffer;
struct gl_framebuffer *fbread = ctx->ReadBuffer;
struct intel_renderbuffer *irbread;
struct intel_renderbuffer *irbdraw;
struct intel_region *dst;
struct intel_region *src;
/* Copypixels can be more than a straight copy. Ensure all the
* extra operations are disabled:
*/
if (!intel_check_blit_fragment_ops(ctx) ||
ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F)
return GL_FALSE;
intelFlush(&intel->ctx);
if (type == GL_COLOR) {
irbread = intel_renderbuffer(fbread->_ColorReadBuffer);
irbdraw = intel_renderbuffer(fb->_ColorDrawBuffers[0][0]);
if (!irbread || !irbread->region || !irbdraw || !irbdraw->region)
return GL_FALSE;
}
else if (type == GL_DEPTH) {
/* Don't think this is really possible execpt at 16bpp, when we have no stencil.
*/
irbread = intel_renderbuffer(fbread->_DepthBuffer->Wrapped);
irbdraw = intel_renderbuffer(fb->_DepthBuffer->Wrapped);
if (!irbread || !irbread->region || !irbdraw || !irbdraw->region
|| !(irbread->region->cpp == 2))
return GL_FALSE;
}
else if (type == GL_DEPTH_STENCIL_EXT) {
/* Does it matter whether it is stencil/depth or depth/stencil?
*/
irbread = intel_renderbuffer(fbread->_DepthBuffer->Wrapped);
irbdraw = intel_renderbuffer(fb->_DepthBuffer->Wrapped);
if (!irbread || !irbread->region || !irbdraw || !irbdraw->region)
return GL_FALSE;
}
else /* GL_STENCIL */ {
/* Don't think this is really possible.
*/
return GL_FALSE;
}
src = irbread->region;
dst = irbdraw->region;
{
GLint dx = dstx - srcx;
GLint dy = dsty - srcy;
/* Clip against dest, including scissor, in GL coordinates:
*/
if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
fb->_Xmax - 1, fb->_Ymax - 1,
&dstx, &dsty, &width, &height))
goto out;
srcx = dstx - dx;
srcy = dsty - dy;
/* Convert from GL to hardware coordinates:
*/
dsty = fb->Height - dsty - height;
srcy = fbread->Height - srcy - height;
/* Clip against the source region:
*/
dx = srcx - dstx;
dy = srcy - dsty;
if (!_mesa_clip_to_region(0, 0, irbread->Base.Width - 1,
irbread->Base.Height - 1,
&srcx, &srcy, &width, &height))
goto out;
dstx = srcx - dx;
dsty = srcy - dy;
{
intelEmitCopyBlit(intel, dst->cpp,
src->pitch, src->buffer, 0,
dst->pitch, dst->buffer, 0,
srcx, srcy,
dstx, dsty,
width, height,
ctx->Color.ColorLogicOpEnabled ?
ctx->Color.LogicOp : GL_COPY);
}
out:
intel_batchbuffer_flush(intel->batch);
}
DBG("%s: success\n", __FUNCTION__);
return GL_TRUE;
}
void
intelCopyPixels(GLcontext * ctx,
GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
GLint destx, GLint desty, GLenum type)
{
if (INTEL_DEBUG & DEBUG_PIXEL)
fprintf(stderr, "%s\n", __FUNCTION__);
if (do_blit_copypixels(ctx, srcx, srcy, width, height, destx, desty, type))
return;
if (do_texture_copypixels(ctx, srcx, srcy, width, height, destx, desty, type))
return;
DBG("fallback to _swrast_CopyPixels\n");
_swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type);
}