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/**************************************************************************
*
* 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 "mtypes.h"
#include "enums.h"
#include "image.h"
#include "teximage.h"
#include "swrast/swrast.h"
#include "intel_screen.h"
#include "intel_context.h"
#include "intel_batchbuffer.h"
#include "intel_buffers.h"
#include "state_tracker/st_mipmap_tree.h"
#include "intel_fbo.h"
#include "intel_tex.h"
#include "intel_blit.h"
#define FILE_DEBUG_FLAG DEBUG_TEXTURE
/**
* Get the pipe_region which is the source for any glCopyTex[Sub]Image call.
*
* Do the best we can using the blitter. A future project is to use
* the texture engine and fragment programs for these copies.
*/
static const struct pipe_region *
get_teximage_source(struct intel_context *intel, GLenum internalFormat)
{
struct intel_renderbuffer *irb;
DBG("%s %s\n", __FUNCTION__,
_mesa_lookup_enum_by_nr(internalFormat));
switch (internalFormat) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16_ARB:
irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
if (irb && irb->region && irb->region->cpp == 2)
return irb->region;
return NULL;
case GL_DEPTH24_STENCIL8_EXT:
case GL_DEPTH_STENCIL_EXT:
irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
if (irb && irb->region && irb->region->cpp == 4)
return irb->region;
return NULL;
case GL_RGBA:
case GL_RGBA8:
return intel_readbuf_region(intel);
case GL_RGB:
if (intel->intelScreen->front.cpp == 2)
return intel_readbuf_region(intel);
return NULL;
default:
return NULL;
}
}
static GLboolean
do_copy_texsubimage(struct intel_context *intel,
struct intel_texture_image *intelImage,
GLenum internalFormat,
GLint dstx, GLint dsty,
GLint x, GLint y, GLsizei width, GLsizei height)
{
GLcontext *ctx = &intel->ctx;
const struct pipe_region *src =
get_teximage_source(intel, internalFormat);
if (!intelImage->mt || !src) {
DBG("%s fail %p %p\n", __FUNCTION__, intelImage->mt, src);
return GL_FALSE;
}
intelFlush(ctx);
/* XXX still need the lock ? */
LOCK_HARDWARE(intel);
{
GLuint image_offset = st_miptree_image_offset(intelImage->mt,
intelImage->face,
intelImage->level);
const GLint orig_x = x;
const GLint orig_y = y;
const struct gl_framebuffer *fb = ctx->DrawBuffer;
if (_mesa_clip_to_region(fb->_Xmin, fb->_Ymin, fb->_Xmax, fb->_Ymax,
&x, &y, &width, &height)) {
/* Update dst for clipped src. Need to also clip the source rect.
*/
dstx += x - orig_x;
dsty += y - orig_y;
if (!(ctx->ReadBuffer->Name == 0)) {
/* XXX this looks bogus ? */
/* FBO: invert Y */
y = ctx->ReadBuffer->Height - y - 1;
}
/* A bit of fiddling to get the blitter to work with -ve
* pitches. But we get a nice inverted blit this way, so it's
* worth it:
*/
intelEmitCopyBlit(intel,
intelImage->mt->cpp,
-src->pitch,
src->buffer,
src->height * src->pitch * src->cpp,
intelImage->mt->pitch,
intelImage->mt->region->buffer,
image_offset,
x, y + height, dstx, dsty, width, height,
GL_COPY); /* ? */
intel_batchbuffer_flush(intel->batch);
}
}
UNLOCK_HARDWARE(intel);
#if 0
/* GL_SGIS_generate_mipmap -- this can be accelerated now.
* XXX Add a ctx->Driver.GenerateMipmaps() function?
*/
if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
intel_generate_mipmap(ctx, target,
&ctx->Texture.Unit[ctx->Texture.CurrentUnit],
texObj);
}
#endif
return GL_TRUE;
}
void
intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
GLenum internalFormat,
GLint x, GLint y, GLsizei width, GLint border)
{
struct gl_texture_unit *texUnit =
&ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *texObj =
_mesa_select_tex_object(ctx, texUnit, target);
struct gl_texture_image *texImage =
_mesa_select_tex_image(ctx, texObj, target, level);
if (border)
goto fail;
/* Setup or redefine the texture object, mipmap tree and texture
* image. Don't populate yet.
*/
ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
width, border,
GL_RGBA, CHAN_TYPE, NULL,
&ctx->DefaultPacking, texObj, texImage);
if (!do_copy_texsubimage(intel_context(ctx),
intel_texture_image(texImage),
internalFormat, 0, 0, x, y, width, 1))
goto fail;
return;
fail:
_swrast_copy_teximage1d(ctx, target, level, internalFormat, x, y,
width, border);
}
void
intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
GLenum internalFormat,
GLint x, GLint y, GLsizei width, GLsizei height,
GLint border)
{
struct gl_texture_unit *texUnit =
&ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *texObj =
_mesa_select_tex_object(ctx, texUnit, target);
struct gl_texture_image *texImage =
_mesa_select_tex_image(ctx, texObj, target, level);
if (border)
goto fail;
/* Setup or redefine the texture object, mipmap tree and texture
* image. Don't populate yet.
*/
ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
width, height, border,
GL_RGBA, CHAN_TYPE, NULL,
&ctx->DefaultPacking, texObj, texImage);
if (!do_copy_texsubimage(intel_context(ctx),
intel_texture_image(texImage),
internalFormat, 0, 0, x, y, width, height))
goto fail;
return;
fail:
#if 0
_swrast_copy_teximage2d(ctx, target, level, internalFormat, x, y,
width, height, border);
#endif
assert(0);
}
void
intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
GLint xoffset, GLint x, GLint y, GLsizei width)
{
struct gl_texture_unit *texUnit =
&ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *texObj =
_mesa_select_tex_object(ctx, texUnit, target);
struct gl_texture_image *texImage =
_mesa_select_tex_image(ctx, texObj, target, level);
GLenum internalFormat = texImage->InternalFormat;
/* XXX need to check <border> as in above function? */
/* Need to check texture is compatible with source format.
*/
if (!do_copy_texsubimage(intel_context(ctx),
intel_texture_image(texImage),
internalFormat, xoffset, 0, x, y, width, 1)) {
#if 0
_swrast_copy_texsubimage1d(ctx, target, level, xoffset, x, y, width);
#endif
assert(0);
}
}
void
intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLint x, GLint y, GLsizei width, GLsizei height)
{
struct gl_texture_unit *texUnit =
&ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *texObj =
_mesa_select_tex_object(ctx, texUnit, target);
struct gl_texture_image *texImage =
_mesa_select_tex_image(ctx, texObj, target, level);
GLenum internalFormat = texImage->InternalFormat;
/* Need to check texture is compatible with source format.
*/
if (!do_copy_texsubimage(intel_context(ctx),
intel_texture_image(texImage),
internalFormat,
xoffset, yoffset, x, y, width, height)) {
#if 0
_swrast_copy_texsubimage2d(ctx, target, level,
xoffset, yoffset, x, y, width, height);
#endif
assert(0);
}
}
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