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/glformats.h"
  32 #include "main/mtypes.h"
  33 #include "main/condrender.h"
  34 #include "main/fbobject.h"
  35 #include "main/teximage.h"
  36 #include "main/texobj.h"
  37 #include "main/texstate.h"
  38 #include "main/bufferobj.h"
  39 #include "swrast/swrast.h"
  40 #include "drivers/common/meta.h"
  41
  42 #include "brw_context.h"
  43 #include "intel_screen.h"
  44 #include "intel_blit.h"
  45 #include "intel_buffers.h"
  46 #include "intel_fbo.h"
  47 #include "intel_mipmap_tree.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", __func__);
  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", __func__);
  72       return false;
  73    }
  74
  75    intel_prepare_render(brw);
  76
  77    struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
  78    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
  79
  80    mesa_format src_format = _mesa_format_from_format_and_type(format, type);
  81    if (_mesa_format_is_mesa_array_format(src_format))
  82       src_format = _mesa_format_from_array_format(src_format);
  83    mesa_format dst_format = irb->mt->format;
  84
  85    /* We can safely discard sRGB encode/decode for the DrawPixels interface */
  86    src_format = _mesa_get_srgb_format_linear(src_format);
  87    dst_format = _mesa_get_srgb_format_linear(dst_format);
  88
  89    if (!intel_miptree_blit_compatible_formats(src_format, dst_format)) {
  90       DBG("%s: bad format for blit\n", __func__);
  91       return false;
  92    }
  93
  94    if (unpack->SwapBytes || unpack->LsbFirst ||
  95        unpack->SkipPixels || unpack->SkipRows) {
  96       DBG("%s: bad packing params\n", __func__);
  97       return false;
  98    }
  99
 100    int src_stride = _mesa_image_row_stride(unpack, width, format, type);
 101    bool src_flip = false;
 102    /* Mesa flips the src_stride for unpack->Invert, but we want our mt to have
 103     * a normal src_stride.
 104     */
 105    if (unpack->Invert) {
 106       src_stride = -src_stride;
 107       src_flip = true;
 108    }
 109
 110    src_offset = (GLintptr)pixels;
 111    src_offset += _mesa_image_offset(2, unpack, width, height,
 112                                     format, type, 0, 0, 0);
 113
 114    src_buffer = intel_bufferobj_buffer(brw, src, src_offset,
 115                                        height * src_stride);
 116
 117    struct intel_mipmap_tree *pbo_mt =
 118       intel_miptree_create_for_bo(brw,
 119                                   src_buffer,
 120                                   irb->mt->format,
 121                                   src_offset,
 122                                   width, height, 1,
 123                                   src_stride,
 124                                   0);
 125    if (!pbo_mt)
 126       return false;
 127
 128    if (!intel_miptree_blit(brw,
 129                            pbo_mt, 0, 0,
 130                            0, 0, src_flip,
 131                            irb->mt, irb->mt_level, irb->mt_layer,
 132                            x, y, _mesa_is_winsys_fbo(ctx->DrawBuffer),
 133                            width, height, GL_COPY)) {
 134       DBG("%s: blit failed\n", __func__);
 135       intel_miptree_release(&pbo_mt);
 136       return false;
 137    }
 138
 139    intel_miptree_release(&pbo_mt);
 140
 141    if (ctx->Query.CurrentOcclusionObject)
 142       ctx->Query.CurrentOcclusionObject->Result += width * height;
 143
 144    DBG("%s: success\n", __func__);
 145    return true;
 146 }
 147
 148 void
 149 intelDrawPixels(struct gl_context * ctx,
 150                 GLint x, GLint y,
 151                 GLsizei width, GLsizei height,
 152                 GLenum format,
 153                 GLenum type,
 154                 const struct gl_pixelstore_attrib *unpack,
 155                 const GLvoid * pixels)
 156 {
 157    struct brw_context *brw = brw_context(ctx);
 158
 159    if (!_mesa_check_conditional_render(ctx))
 160       return;
 161
 162    if (format == GL_STENCIL_INDEX) {
 163       _swrast_DrawPixels(ctx, x, y, width, height, format, type,
 164                          unpack, pixels);
 165       return;
 166    }
 167
 168    if (_mesa_is_bufferobj(unpack->BufferObj)) {
 169       if (do_blit_drawpixels(ctx, x, y, width, height, format, type, unpack,
 170                              pixels)) {
 171          return;
 172       }
 173
 174       perf_debug("%s: fallback to generic code in PBO case\n", __func__);
 175    }
 176
 177    _mesa_meta_DrawPixels(ctx, x, y, width, height, format, type,
 178                          unpack, pixels);
 179 }