src/mesa/drivers/dri/i965/intel_pixel_copy.c

   1 /*
   2  * Copyright 2003 VMware, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #include "main/image.h"
  27 #include "main/state.h"
  28 #include "main/mtypes.h"
  29 #include "main/condrender.h"
  30 #include "main/fbobject.h"
  31 #include "drivers/common/meta.h"
  32
  33 #include "brw_context.h"
  34 #include "intel_buffers.h"
  35 #include "intel_mipmap_tree.h"
  36 #include "intel_pixel.h"
  37 #include "intel_fbo.h"
  38 #include "intel_blit.h"
  39 #include "intel_batchbuffer.h"
  40
  41 #define FILE_DEBUG_FLAG DEBUG_PIXEL
  42
  43 /**
  44  * CopyPixels with the blitter.  Don't support zooming, pixel transfer, etc.
  45  */
  46 static bool
  47 do_blit_copypixels(struct gl_context * ctx,
  48                    GLint srcx, GLint srcy,
  49                    GLsizei width, GLsizei height,
  50                    GLint dstx, GLint dsty, GLenum type)
  51 {
  52    struct brw_context *brw = brw_context(ctx);
  53    struct gl_framebuffer *fb = ctx->DrawBuffer;
  54    struct gl_framebuffer *read_fb = ctx->ReadBuffer;
  55    GLint orig_dstx;
  56    GLint orig_dsty;
  57    GLint orig_srcx;
  58    GLint orig_srcy;
  59    struct intel_renderbuffer *draw_irb = NULL;
  60    struct intel_renderbuffer *read_irb = NULL;
  61
  62    /* Update draw buffer bounds */
  63    _mesa_update_state(ctx);
  64
  65    intel_prepare_render(brw);
  66
  67    switch (type) {
  68    case GL_COLOR:
  69       if (fb->_NumColorDrawBuffers != 1) {
  70          perf_debug("glCopyPixels() fallback: MRT\n");
  71          return false;
  72       }
  73
  74       draw_irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
  75       read_irb = intel_renderbuffer(read_fb->_ColorReadBuffer);
  76       break;
  77    case GL_DEPTH_STENCIL_EXT:
  78       draw_irb = intel_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
  79       read_irb =
  80          intel_renderbuffer(read_fb->Attachment[BUFFER_DEPTH].Renderbuffer);
  81       break;
  82    case GL_DEPTH:
  83       perf_debug("glCopyPixels() fallback: GL_DEPTH\n");
  84       return false;
  85    case GL_STENCIL:
  86       perf_debug("glCopyPixels() fallback: GL_STENCIL\n");
  87       return false;
  88    default:
  89       perf_debug("glCopyPixels(): Unknown type\n");
  90       return false;
  91    }
  92
  93    if (!draw_irb) {
  94       perf_debug("glCopyPixels() fallback: missing draw buffer\n");
  95       return false;
  96    }
  97
  98    if (!read_irb) {
  99       perf_debug("glCopyPixels() fallback: missing read buffer\n");
 100       return false;
 101    }
 102
 103    if (draw_irb->mt->num_samples > 1 || read_irb->mt->num_samples > 1) {
 104       perf_debug("glCopyPixels() fallback: multisampled buffers\n");
 105       return false;
 106    }
 107
 108    if (ctx->_ImageTransferState) {
 109       perf_debug("glCopyPixels(): Unsupported image transfer state\n");
 110       return false;
 111    }
 112
 113    if (ctx->Depth.Test) {
 114       perf_debug("glCopyPixels(): Unsupported depth test state\n");
 115       return false;
 116    }
 117
 118    if (ctx->Stencil._Enabled) {
 119       perf_debug("glCopyPixels(): Unsupported stencil test state\n");
 120       return false;
 121    }
 122
 123    if (ctx->Fog.Enabled ||
 124        ctx->Texture._MaxEnabledTexImageUnit != -1 ||
 125        ctx->FragmentProgram._Enabled) {
 126       perf_debug("glCopyPixels(): Unsupported fragment shader state\n");
 127       return false;
 128    }
 129
 130    if (ctx->Color.AlphaEnabled ||
 131        ctx->Color.BlendEnabled) {
 132       perf_debug("glCopyPixels(): Unsupported blend state\n");
 133       return false;
 134    }
 135
 136    if (!ctx->Color.ColorMask[0][0] ||
 137        !ctx->Color.ColorMask[0][1] ||
 138        !ctx->Color.ColorMask[0][2] ||
 139        !ctx->Color.ColorMask[0][3]) {
 140       perf_debug("glCopyPixels(): Unsupported color mask state\n");
 141       return false;
 142    }
 143
 144    if (ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F) {
 145       perf_debug("glCopyPixels(): Unsupported pixel zoom\n");
 146       return false;
 147    }
 148
 149    intel_batchbuffer_flush(brw);
 150
 151    /* Clip to destination buffer. */
 152    orig_dstx = dstx;
 153    orig_dsty = dsty;
 154    if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
 155                              fb->_Xmax, fb->_Ymax,
 156                              &dstx, &dsty, &width, &height))
 157       goto out;
 158    /* Adjust src coords for our post-clipped destination origin */
 159    srcx += dstx - orig_dstx;
 160    srcy += dsty - orig_dsty;
 161
 162    /* Clip to source buffer. */
 163    orig_srcx = srcx;
 164    orig_srcy = srcy;
 165    if (!_mesa_clip_to_region(0, 0,
 166                              read_fb->Width, read_fb->Height,
 167                              &srcx, &srcy, &width, &height))
 168       goto out;
 169    /* Adjust dst coords for our post-clipped source origin */
 170    dstx += srcx - orig_srcx;
 171    dsty += srcy - orig_srcy;
 172
 173    if (!intel_miptree_blit(brw,
 174                            read_irb->mt, read_irb->mt_level, read_irb->mt_layer,
 175                            srcx, srcy, _mesa_is_winsys_fbo(read_fb),
 176                            draw_irb->mt, draw_irb->mt_level, draw_irb->mt_layer,
 177                            dstx, dsty, _mesa_is_winsys_fbo(fb),
 178                            width, height,
 179                            (ctx->Color.ColorLogicOpEnabled ?
 180                             ctx->Color.LogicOp : GL_COPY))) {
 181       DBG("%s: blit failure\n", __func__);
 182       return false;
 183    }
 184
 185    if (ctx->Query.CurrentOcclusionObject)
 186       ctx->Query.CurrentOcclusionObject->Result += width * height;
 187
 188 out:
 189
 190    DBG("%s: success\n", __func__);
 191    return true;
 192 }
 193
 194
 195 void
 196 intelCopyPixels(struct gl_context * ctx,
 197                 GLint srcx, GLint srcy,
 198                 GLsizei width, GLsizei height,
 199                 GLint destx, GLint desty, GLenum type)
 200 {
 201    DBG("%s\n", __func__);
 202
 203    if (!_mesa_check_conditional_render(ctx))
 204       return;
 205
 206    if (do_blit_copypixels(ctx, srcx, srcy, width, height, destx, desty, type))
 207       return;
 208
 209    /* this will use swrast if needed */
 210    _mesa_meta_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type);
 211 }