/************************************************************************** * * 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 "main/mtypes.h" #include "main/enums.h" #include "main/image.h" #include "main/teximage.h" #include "main/mipmap.h" #include "swrast/swrast.h" #include "intel_screen.h" #include "intel_context.h" #include "intel_batchbuffer.h" #include "intel_buffers.h" #include "intel_mipmap_tree.h" #include "intel_regions.h" #include "intel_fbo.h" #include "intel_tex.h" #include "intel_blit.h" #define FILE_DEBUG_FLAG DEBUG_TEXTURE /** * Get the intel_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 intel_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->ctx.Visual.rgbBits == 16) return intel_readbuf_region(intel); return NULL; default: return NULL; } } static GLboolean do_copy_texsubimage(struct intel_context *intel, GLenum target, struct intel_texture_image *intelImage, GLenum internalFormat, GLint dstx, GLint dsty, GLint x, GLint y, GLsizei width, GLsizei height) { GLcontext *ctx = &intel->ctx; struct gl_texture_object *texObj = intelImage->base.TexObject; const struct intel_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); LOCK_HARDWARE(intel); { GLuint image_offset = intel_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) { /* reading from a window, adjust x, y */ __DRIdrawablePrivate *dPriv = intel->driDrawable; GLuint window_y; /* window_y = position of window on screen if y=0=bottom */ window_y = intel->intelScreen->height - (dPriv->y + dPriv->h); y = window_y + y; x += dPriv->x; } else { /* reading from a 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, src->tiling, intelImage->mt->pitch, intelImage->mt->region->buffer, image_offset, intelImage->mt->region->tiling, x, y + height, dstx, dsty, width, height, GL_COPY); /* ? */ } } UNLOCK_HARDWARE(intel); /* GL_SGIS_generate_mipmap */ if (intelImage->level == texObj->BaseLevel && texObj->GenerateMipmap) { intel_generate_mipmap(ctx, target, texObj); } 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), target, 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), target, intel_texture_image(texImage), internalFormat, 0, 0, x, y, width, height)) goto fail; return; fail: _swrast_copy_teximage2d(ctx, target, level, internalFormat, x, y, width, height, border); } 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 as in above function? */ /* Need to check texture is compatible with source format. */ if (!do_copy_texsubimage(intel_context(ctx), target, intel_texture_image(texImage), internalFormat, xoffset, 0, x, y, width, 1)) { _swrast_copy_texsubimage1d(ctx, target, level, xoffset, x, y, width); } } 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), target, intel_texture_image(texImage), internalFormat, xoffset, yoffset, x, y, width, height)) { DBG("%s - fallback to swrast\n", __FUNCTION__); _swrast_copy_texsubimage2d(ctx, target, level, xoffset, yoffset, x, y, width, height); } }