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

   1 /*
   2  * Copyright 2006 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 portionsalloc
  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/enums.h"
  27 #include "main/image.h"
  28 #include "main/glformats.h"
  29 #include "main/mtypes.h"
  30 #include "main/condrender.h"
  31 #include "main/fbobject.h"
  32 #include "main/teximage.h"
  33 #include "main/texobj.h"
  34 #include "main/texstate.h"
  35 #include "main/bufferobj.h"
  36 #include "swrast/swrast.h"
  37 #include "drivers/common/meta.h"
  38
  39 #include "brw_context.h"
  40 #include "intel_screen.h"
  41 #include "intel_blit.h"
  42 #include "intel_buffers.h"
  43 #include "intel_fbo.h"
  44 #include "intel_mipmap_tree.h"
  45 #include "intel_pixel.h"
  46 #include "intel_buffer_objects.h"
  47
  48 #define FILE_DEBUG_FLAG DEBUG_PIXEL
  49
  50 static bool
  51 do_blit_drawpixels(struct gl_context * ctx,
  52                    GLint x, GLint y, GLsizei width, GLsizei height,
  53                    GLenum format, GLenum type,
  54                    const struct gl_pixelstore_attrib *unpack,
  55                    const GLvoid * pixels)
  56 {
  57    struct brw_context *brw = brw_context(ctx);
  58    struct intel_buffer_object *src = intel_buffer_object(unpack->BufferObj);
  59    GLuint src_offset;
  60    struct brw_bo *src_buffer;
  61
  62    DBG("%s\n", __func__);
  63
  64    if (!intel_check_blit_fragment_ops(ctx, false))
  65       return false;
  66
  67    if (ctx->DrawBuffer->_NumColorDrawBuffers != 1) {
  68       DBG("%s: fallback due to MRT\n", __func__);
  69       return false;
  70    }
  71
  72    intel_prepare_render(brw);
  73
  74    struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
  75    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
  76
  77    mesa_format src_format = _mesa_format_from_format_and_type(format, type);
  78    if (_mesa_format_is_mesa_array_format(src_format))
  79       src_format = _mesa_format_from_array_format(src_format);
  80    mesa_format dst_format = irb->mt->format;
  81
  82    /* We can safely discard sRGB encode/decode for the DrawPixels interface */
  83    src_format = _mesa_get_srgb_format_linear(src_format);
  84    dst_format = _mesa_get_srgb_format_linear(dst_format);
  85
  86    if (!intel_miptree_blit_compatible_formats(src_format, dst_format)) {
  87       DBG("%s: bad format for blit\n", __func__);
  88       return false;
  89    }
  90
  91    if (unpack->SwapBytes || unpack->LsbFirst ||
  92        unpack->SkipPixels || unpack->SkipRows) {
  93       DBG("%s: bad packing params\n", __func__);
  94       return false;
  95    }
  96
  97    int src_stride = _mesa_image_row_stride(unpack, width, format, type);
  98    bool src_flip = false;
  99    /* Mesa flips the src_stride for unpack->Invert, but we want our mt to have
 100     * a normal src_stride.
 101     */
 102    if (unpack->Invert) {
 103       src_stride = -src_stride;
 104       src_flip = true;
 105    }
 106
 107    src_offset = (GLintptr)pixels;
 108    src_offset += _mesa_image_offset(2, unpack, width, height,
 109                                     format, type, 0, 0, 0);
 110
 111    src_buffer = intel_bufferobj_buffer(brw, src, src_offset,
 112                                        height * src_stride, false);
 113
 114    struct intel_mipmap_tree *pbo_mt =
 115       intel_miptree_create_for_bo(brw,
 116                                   src_buffer,
 117                                   irb->mt->format,
 118                                   src_offset,
 119                                   width, height, 1,
 120                                   src_stride,
 121                                   MIPTREE_CREATE_DEFAULT);
 122    if (!pbo_mt)
 123       return false;
 124
 125    if (!intel_miptree_blit(brw,
 126                            pbo_mt, 0, 0,
 127                            0, 0, src_flip,
 128                            irb->mt, irb->mt_level, irb->mt_layer,
 129                            x, y, _mesa_is_winsys_fbo(ctx->DrawBuffer),
 130                            width, height, GL_COPY)) {
 131       DBG("%s: blit failed\n", __func__);
 132       intel_miptree_release(&pbo_mt);
 133       return false;
 134    }
 135
 136    intel_miptree_release(&pbo_mt);
 137
 138    if (ctx->Query.CurrentOcclusionObject)
 139       ctx->Query.CurrentOcclusionObject->Result += width * height;
 140
 141    DBG("%s: success\n", __func__);
 142    return true;
 143 }
 144
 145 void
 146 intelDrawPixels(struct gl_context * ctx,
 147                 GLint x, GLint y,
 148                 GLsizei width, GLsizei height,
 149                 GLenum format,
 150                 GLenum type,
 151                 const struct gl_pixelstore_attrib *unpack,
 152                 const GLvoid * pixels)
 153 {
 154    struct brw_context *brw = brw_context(ctx);
 155
 156    if (!_mesa_check_conditional_render(ctx))
 157       return;
 158
 159    if (format == GL_STENCIL_INDEX) {
 160       _swrast_DrawPixels(ctx, x, y, width, height, format, type,
 161                          unpack, pixels);
 162       return;
 163    }
 164
 165    if (_mesa_is_bufferobj(unpack->BufferObj)) {
 166       if (do_blit_drawpixels(ctx, x, y, width, height, format, type, unpack,
 167                              pixels)) {
 168          return;
 169       }
 170
 171       perf_debug("%s: fallback to generic code in PBO case\n", __func__);
 172    }
 173
 174    _mesa_meta_DrawPixels(ctx, x, y, width, height, format, type,
 175                          unpack, pixels);
 176 }