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Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_tex_copy.c')
-rw-r--r--src/mesa/drivers/dri/intel/intel_tex_copy.c298
1 files changed, 298 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_tex_copy.c b/src/mesa/drivers/dri/intel/intel_tex_copy.c
new file mode 100644
index 0000000000..d0ab464a1c
--- /dev/null
+++ b/src/mesa/drivers/dri/intel/intel_tex_copy.c
@@ -0,0 +1,298 @@
+/**************************************************************************
+ *
+ * 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 "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 <border> 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);
+ }
+}
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