summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/intel/intel_pixel_copy.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_pixel_copy.c')
-rw-r--r--src/mesa/drivers/dri/intel/intel_pixel_copy.c394
1 files changed, 394 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_pixel_copy.c b/src/mesa/drivers/dri/intel/intel_pixel_copy.c
new file mode 100644
index 0000000000..61d1296c26
--- /dev/null
+++ b/src/mesa/drivers/dri/intel/intel_pixel_copy.c
@@ -0,0 +1,394 @@
+/**************************************************************************
+ *
+ * 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/glheader.h"
+#include "main/enums.h"
+#include "main/image.h"
+#include "main/state.h"
+#include "main/mtypes.h"
+#include "main/macros.h"
+#include "swrast/swrast.h"
+
+#include "intel_screen.h"
+#include "intel_context.h"
+#include "intel_batchbuffer.h"
+#include "intel_buffers.h"
+#include "intel_blit.h"
+#include "intel_regions.h"
+#include "intel_pixel.h"
+
+#define FILE_DEBUG_FLAG DEBUG_PIXEL
+
+static struct intel_region *
+copypix_src_region(struct intel_context *intel, GLenum type)
+{
+ 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.
+ */
+ if (intel->depth_region && intel->depth_region->cpp == 2)
+ return intel->depth_region;
+ 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?
+ */
+ return intel->depth_region;
+ default:
+ break;
+ }
+
+ return NULL;
+}
+
+
+/**
+ * Check if any fragment operations are in effect which might effect
+ * glCopyPixels. Differs from intel_check_blit_fragment_ops in that
+ * we allow Scissor.
+ */
+static GLboolean
+intel_check_copypixel_blit_fragment_ops(GLcontext * ctx)
+{
+ if (ctx->NewState)
+ _mesa_update_state(ctx);
+
+ /* Could do logicop with the blitter:
+ */
+ return !(ctx->_ImageTransferState ||
+ ctx->Color.AlphaEnabled ||
+ ctx->Depth.Test ||
+ ctx->Fog.Enabled ||
+ ctx->Stencil.Enabled ||
+ !ctx->Color.ColorMask[0] ||
+ !ctx->Color.ColorMask[1] ||
+ !ctx->Color.ColorMask[2] ||
+ !ctx->Color.ColorMask[3] ||
+ ctx->Texture._EnabledUnits ||
+ ctx->FragmentProgram._Enabled ||
+ ctx->Color.BlendEnabled);
+}
+
+#ifdef I915
+/* 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);
+ 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;
+
+ if (ctx->Pixel.ZoomX > 0) {
+ dstbox.x1 = dstx;
+ dstbox.x2 = dstx + width * ctx->Pixel.ZoomX;
+ } else {
+ dstbox.x1 = dstx + width * ctx->Pixel.ZoomX;
+ dstbox.x2 = dstx;
+ }
+ if (ctx->Pixel.ZoomY > 0) {
+ dstbox.y1 = dsty;
+ dstbox.y2 = dsty + height * ctx->Pixel.ZoomY;
+ } else {
+ dstbox.y1 = dsty + height * ctx->Pixel.ZoomY;
+ dstbox.y2 = dsty;
+ }
+
+ 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:
+ */
+ intel->vtbl.meta_draw_region(intel, dst, intel->depth_region);
+
+ 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);
+
+ if (intel->driDrawable->numClipRects) {
+ __DRIdrawablePrivate *dPriv = intel->driDrawable;
+
+
+ srcy = dPriv->h - srcy - height; /* convert from gl to hardware coords */
+
+ srcx += dPriv->x;
+ srcy += dPriv->y;
+
+ /* 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, src->pitch, src->height,
+ &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->vtbl.meta_draw_quad(intel,
+ dstx,
+ dstx + width * ctx->Pixel.ZoomX,
+ dPriv->h - (dsty + height * ctx->Pixel.ZoomY),
+ dPriv->h - (dsty), 0, /* XXX: what z value? */
+ 0x00ff00ff,
+ srcx, srcx + width, srcy, srcy + height);
+
+ out:
+ intel->vtbl.leave_meta_state(intel);
+ intel_batchbuffer_emit_mi_flush(intel->batch);
+ }
+ UNLOCK_HARDWARE(intel);
+
+ DBG("%s: success\n", __FUNCTION__);
+ return GL_TRUE;
+}
+#endif /* I915 */
+
+
+/**
+ * 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 intel_region *dst = intel_drawbuf_region(intel);
+ struct intel_region *src = copypix_src_region(intel, type);
+ struct gl_framebuffer *fb = ctx->DrawBuffer;
+ struct gl_framebuffer *read_fb = ctx->ReadBuffer;
+ unsigned int num_cliprects;
+ drm_clip_rect_t *cliprects;
+ int x_off, y_off;
+
+ /* Copypixels can be more than a straight copy. Ensure all the
+ * extra operations are disabled:
+ */
+ if (!intel_check_copypixel_blit_fragment_ops(ctx) ||
+ ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F)
+ return GL_FALSE;
+
+ if (!src || !dst)
+ return GL_FALSE;
+
+
+
+ intelFlush(&intel->ctx);
+
+ LOCK_HARDWARE(intel);
+
+ intel_get_cliprects(intel, &cliprects, &num_cliprects, &x_off, &y_off);
+ if (num_cliprects != 0) {
+ GLint delta_x;
+ GLint delta_y;
+ GLint orig_dstx;
+ GLint orig_dsty;
+ GLint orig_srcx;
+ GLint orig_srcy;
+ GLuint i;
+
+ /* XXX: We fail to handle different inversion between read and draw framebuffer. */
+
+ /* Clip to destination buffer. */
+ orig_dstx = dstx;
+ orig_dsty = dsty;
+ if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
+ fb->_Xmax, fb->_Ymax,
+ &dstx, &dsty, &width, &height))
+ goto out;
+ /* Adjust src coords for our post-clipped destination origin */
+ srcx += dstx - orig_dstx;
+ srcy += dsty - orig_dsty;
+
+ /* Clip to source buffer. */
+ orig_srcx = srcx;
+ orig_srcy = srcy;
+ if (!_mesa_clip_to_region(read_fb->_Xmin, read_fb->_Ymin,
+ read_fb->_Xmax, read_fb->_Ymax,
+ &srcx, &srcy, &width, &height))
+ goto out;
+ /* Adjust dst coords for our post-clipped source origin */
+ dstx += srcx - orig_srcx;
+ dsty += srcy - orig_srcy;
+
+ /* Convert from GL to hardware coordinates:
+ */
+ if (fb->Name == 0) {
+ /* copypixels to a system framebuffer */
+ dstx = x_off + dstx;
+ dsty = y_off + (fb->Height - dsty - height);
+ } else {
+ /* copypixels to a user framebuffer object */
+ dstx = x_off + dstx;
+ dsty = y_off + dsty;
+ }
+
+ /* Flip source Y if it's a system framebuffer. */
+ if (read_fb->Name == 0) {
+ srcx = intel->driReadDrawable->x + srcx;
+ srcy = intel->driReadDrawable->y + (fb->Height - srcy - height);
+ }
+
+ delta_x = srcx - dstx;
+ delta_y = srcy - dsty;
+ /* Could do slightly more clipping: Eg, take the intersection of
+ * the destination cliprects and the read drawable cliprects
+ *
+ * This code will not overwrite other windows, but will
+ * introduce garbage when copying from obscured window regions.
+ */
+ for (i = 0; i < num_cliprects; i++) {
+ GLint clip_x = dstx;
+ GLint clip_y = dsty;
+ GLint clip_w = width;
+ GLint clip_h = height;
+
+ if (!_mesa_clip_to_region(cliprects[i].x1, cliprects[i].y1,
+ cliprects[i].x2, cliprects[i].y2,
+ &clip_x, &clip_y, &clip_w, &clip_h))
+ continue;
+
+ intelEmitCopyBlit(intel, dst->cpp,
+ src->pitch, src->buffer, 0, src->tiling,
+ dst->pitch, dst->buffer, 0, dst->tiling,
+ clip_x + delta_x, clip_y + delta_y, /* srcx, srcy */
+ clip_x, clip_y, /* dstx, dsty */
+ clip_w, clip_h,
+ ctx->Color.ColorLogicOpEnabled ?
+ ctx->Color.LogicOp : GL_COPY);
+ }
+ }
+out:
+ UNLOCK_HARDWARE(intel);
+
+ 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;
+
+#ifdef I915
+ if (do_texture_copypixels(ctx, srcx, srcy, width, height, destx, desty, type))
+ return;
+#endif
+
+ DBG("fallback to _swrast_CopyPixels\n");
+
+ _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-26 06:57:26 +0000