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

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portionsalloc
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "main/glheader.h"
  29 #include "main/enums.h"
  30 #include "main/image.h"
  31 #include "main/mtypes.h"
  32 #include "main/condrender.h"
  33 #include "main/fbobject.h"
  34 #include "main/teximage.h"
  35 #include "main/texobj.h"
  36 #include "main/texstate.h"
  37 #include "main/bufferobj.h"
  38 #include "swrast/swrast.h"
  39 #include "drivers/common/meta.h"
  40
  41 #include "brw_context.h"
  42 #include "intel_screen.h"
  43 #include "intel_blit.h"
  44 #include "intel_buffers.h"
  45 #include "intel_fbo.h"
  46 #include "intel_mipmap_tree.h"
  47 #include "intel_regions.h"
  48 #include "intel_pixel.h"
  49 #include "intel_buffer_objects.h"
  50
  51 #define FILE_DEBUG_FLAG DEBUG_PIXEL
  52
  53 static bool
  54 do_blit_drawpixels(struct gl_context * ctx,
  55                    GLint x, GLint y, GLsizei width, GLsizei height,
  56                    GLenum format, GLenum type,
  57                    const struct gl_pixelstore_attrib *unpack,
  58                    const GLvoid * pixels)
  59 {
  60    struct brw_context *brw = brw_context(ctx);
  61    struct intel_buffer_object *src = intel_buffer_object(unpack->BufferObj);
  62    GLuint src_offset;
  63    drm_intel_bo *src_buffer;
  64
  65    DBG("%s\n", __FUNCTION__);
  66
  67    if (!intel_check_blit_fragment_ops(ctx, false))
  68       return false;
  69
  70    if (ctx->DrawBuffer->_NumColorDrawBuffers != 1) {
  71       DBG("%s: fallback due to MRT\n", __FUNCTION__);
  72       return false;
  73    }
  74
  75    struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
  76    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
  77
  78    if (!_mesa_format_matches_format_and_type(irb->mt->format, format, type,
  79                                              false)) {
  80       DBG("%s: bad format for blit\n", __FUNCTION__);
  81       return false;
  82    }
  83
  84    if (unpack->SwapBytes || unpack->LsbFirst ||
  85        unpack->SkipPixels || unpack->SkipRows) {
  86       DBG("%s: bad packing params\n", __FUNCTION__);
  87       return false;
  88    }
  89
  90    int src_stride = _mesa_image_row_stride(unpack, width, format, type);
  91    bool src_flip = false;
  92    /* Mesa flips the src_stride for unpack->Invert, but we want our mt to have
  93     * a normal src_stride.
  94     */
  95    if (unpack->Invert) {
  96       src_stride = -src_stride;
  97       src_flip = true;
  98    }
  99
 100    src_offset = (GLintptr)pixels;
 101    src_offset += _mesa_image_offset(2, unpack, width, height,
 102                                     format, type, 0, 0, 0);
 103
 104    intel_prepare_render(brw);
 105
 106    src_buffer = intel_bufferobj_buffer(brw, src,
 107                                        src_offset, width * height *
 108                                        irb->mt->cpp);
 109
 110    struct intel_mipmap_tree *pbo_mt =
 111       intel_miptree_create_for_bo(brw,
 112                                   src_buffer,
 113                                   irb->mt->format,
 114                                   src_offset,
 115                                   width, height,
 116                                   src_stride, I915_TILING_NONE);
 117    if (!pbo_mt)
 118       return false;
 119
 120    if (!intel_miptree_blit(brw,
 121                            pbo_mt, 0, 0,
 122                            0, 0, src_flip,
 123                            irb->mt, irb->mt_level, irb->mt_layer,
 124                            x, y, _mesa_is_winsys_fbo(ctx->DrawBuffer),
 125                            width, height, GL_COPY)) {
 126       DBG("%s: blit failed\n", __FUNCTION__);
 127       intel_miptree_release(&pbo_mt);
 128       return false;
 129    }
 130
 131    intel_miptree_release(&pbo_mt);
 132
 133    if (ctx->Query.CurrentOcclusionObject)
 134       ctx->Query.CurrentOcclusionObject->Result += width * height;
 135
 136    intel_check_front_buffer_rendering(brw);
 137
 138    DBG("%s: success\n", __FUNCTION__);
 139    return true;
 140 }
 141
 142 void
 143 intelDrawPixels(struct gl_context * ctx,
 144                 GLint x, GLint y,
 145                 GLsizei width, GLsizei height,
 146                 GLenum format,
 147                 GLenum type,
 148                 const struct gl_pixelstore_attrib *unpack,
 149                 const GLvoid * pixels)
 150 {
 151    struct brw_context *brw = brw_context(ctx);
 152
 153    if (!_mesa_check_conditional_render(ctx))
 154       return;
 155
 156    if (format == GL_STENCIL_INDEX) {
 157       _swrast_DrawPixels(ctx, x, y, width, height, format, type,
 158                          unpack, pixels);
 159       return;
 160    }
 161
 162    if (_mesa_is_bufferobj(unpack->BufferObj)) {
 163       if (do_blit_drawpixels(ctx, x, y, width, height, format, type, unpack,
 164                              pixels)) {
 165          return;
 166       }
 167
 168       perf_debug("%s: fallback to generic code in PBO case\n", __FUNCTION__);
 169    }
 170
 171    _mesa_meta_DrawPixels(ctx, x, y, width, height, format, type,
 172                          unpack, pixels);
 173 }