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5564 | serge | 1 | /********************************************************** |
2 | * Copyright 2008-2009 VMware, Inc. All rights reserved. |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person |
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5 | * obtaining a copy of this software and associated documentation |
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6 | * files (the "Software"), to deal in the Software without |
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7 | * restriction, including without limitation the rights to use, copy, |
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8 | * modify, merge, publish, distribute, sublicense, and/or sell copies |
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9 | * of the Software, and to permit persons to whom the Software is |
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10 | * furnished to do so, subject to the following conditions: |
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11 | * |
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12 | * The above copyright notice and this permission notice shall be |
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13 | * included in all copies or substantial portions of the Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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18 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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19 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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20 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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21 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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22 | * SOFTWARE. |
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23 | * |
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24 | **********************************************************/ |
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25 | |||
26 | #include "util/u_inlines.h" |
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27 | #include "util/u_prim.h" |
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28 | #include "indices/u_indices.h" |
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29 | |||
30 | #include "svga_cmd.h" |
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31 | #include "svga_draw.h" |
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32 | #include "svga_draw_private.h" |
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33 | #include "svga_resource_buffer.h" |
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34 | #include "svga_winsys.h" |
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35 | #include "svga_context.h" |
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36 | #include "svga_hw_reg.h" |
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37 | |||
38 | |||
39 | static enum pipe_error |
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40 | translate_indices(struct svga_hwtnl *hwtnl, struct pipe_resource *src, |
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41 | unsigned offset, unsigned prim, unsigned nr, |
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42 | unsigned index_size, |
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43 | u_translate_func translate, struct pipe_resource **out_buf) |
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44 | { |
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45 | struct pipe_context *pipe = &hwtnl->svga->pipe; |
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46 | struct pipe_transfer *src_transfer = NULL; |
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47 | struct pipe_transfer *dst_transfer = NULL; |
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48 | unsigned size; |
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49 | const void *src_map = NULL; |
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50 | struct pipe_resource *dst = NULL; |
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51 | void *dst_map = NULL; |
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52 | |||
53 | /* Need to trim vertex count to make sure we don't write too much data |
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54 | * to the dst buffer in the translate() call. |
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55 | */ |
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56 | u_trim_pipe_prim(prim, &nr); |
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57 | |||
58 | size = index_size * nr; |
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59 | |||
60 | dst = pipe_buffer_create(pipe->screen, |
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61 | PIPE_BIND_INDEX_BUFFER, PIPE_USAGE_DEFAULT, size); |
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62 | if (dst == NULL) |
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63 | goto fail; |
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64 | |||
65 | src_map = pipe_buffer_map(pipe, src, PIPE_TRANSFER_READ, &src_transfer); |
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66 | if (src_map == NULL) |
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67 | goto fail; |
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68 | |||
69 | dst_map = pipe_buffer_map(pipe, dst, PIPE_TRANSFER_WRITE, &dst_transfer); |
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70 | if (dst_map == NULL) |
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71 | goto fail; |
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72 | |||
73 | translate((const char *) src_map + offset, 0, 0, nr, 0, dst_map); |
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74 | |||
75 | pipe_buffer_unmap(pipe, src_transfer); |
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76 | pipe_buffer_unmap(pipe, dst_transfer); |
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77 | |||
78 | *out_buf = dst; |
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79 | return PIPE_OK; |
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80 | |||
81 | fail: |
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82 | if (src_map) |
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83 | pipe_buffer_unmap(pipe, src_transfer); |
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84 | |||
85 | if (dst_map) |
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86 | pipe_buffer_unmap(pipe, dst_transfer); |
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87 | |||
88 | if (dst) |
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89 | pipe->screen->resource_destroy(pipe->screen, dst); |
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90 | |||
91 | return PIPE_ERROR_OUT_OF_MEMORY; |
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92 | } |
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93 | |||
94 | |||
95 | enum pipe_error |
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96 | svga_hwtnl_simple_draw_range_elements(struct svga_hwtnl *hwtnl, |
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97 | struct pipe_resource *index_buffer, |
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98 | unsigned index_size, int index_bias, |
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99 | unsigned min_index, unsigned max_index, |
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100 | unsigned prim, unsigned start, |
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101 | unsigned count) |
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102 | { |
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103 | SVGA3dPrimitiveRange range; |
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104 | unsigned hw_prim; |
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105 | unsigned hw_count; |
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106 | unsigned index_offset = start * index_size; |
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107 | |||
108 | hw_prim = svga_translate_prim(prim, count, &hw_count); |
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109 | if (hw_count == 0) |
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110 | return PIPE_OK; /* nothing to draw */ |
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111 | |||
112 | /* We should never see user-space buffers in the driver. The vbuf |
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113 | * module should have converted them into real buffers. |
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114 | */ |
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115 | if (index_buffer) |
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116 | assert(!svga_buffer_is_user_buffer(index_buffer)); |
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117 | |||
118 | range.primType = hw_prim; |
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119 | range.primitiveCount = hw_count; |
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120 | range.indexArray.offset = index_offset; |
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121 | range.indexArray.stride = index_size; |
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122 | range.indexWidth = index_size; |
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123 | range.indexBias = index_bias; |
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124 | |||
125 | return svga_hwtnl_prim(hwtnl, &range, min_index, max_index, index_buffer); |
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126 | } |
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127 | |||
128 | |||
129 | enum pipe_error |
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130 | svga_hwtnl_draw_range_elements(struct svga_hwtnl *hwtnl, |
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131 | struct pipe_resource *index_buffer, |
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132 | unsigned index_size, int index_bias, |
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133 | unsigned min_index, unsigned max_index, |
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134 | unsigned prim, unsigned start, unsigned count) |
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135 | { |
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136 | unsigned gen_prim, gen_size, gen_nr, gen_type; |
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137 | u_translate_func gen_func; |
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138 | enum pipe_error ret = PIPE_OK; |
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139 | |||
140 | if (hwtnl->api_fillmode != PIPE_POLYGON_MODE_FILL && |
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141 | prim >= PIPE_PRIM_TRIANGLES) { |
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142 | gen_type = u_unfilled_translator(prim, |
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143 | index_size, |
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144 | count, |
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145 | hwtnl->api_fillmode, |
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146 | &gen_prim, |
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147 | &gen_size, &gen_nr, &gen_func); |
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148 | } |
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149 | else { |
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150 | gen_type = u_index_translator(svga_hw_prims, |
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151 | prim, |
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152 | index_size, |
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153 | count, |
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154 | hwtnl->api_pv, |
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155 | hwtnl->hw_pv, |
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156 | PR_DISABLE, |
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157 | &gen_prim, &gen_size, &gen_nr, &gen_func); |
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158 | } |
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159 | |||
160 | if (gen_type == U_TRANSLATE_MEMCPY) { |
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161 | /* No need for translation, just pass through to hardware: |
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162 | */ |
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163 | return svga_hwtnl_simple_draw_range_elements(hwtnl, index_buffer, |
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164 | index_size, |
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165 | index_bias, |
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166 | min_index, |
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167 | max_index, |
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168 | gen_prim, start, count); |
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169 | } |
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170 | else { |
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171 | struct pipe_resource *gen_buf = NULL; |
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172 | |||
173 | /* Need to allocate a new index buffer and run the translate |
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174 | * func to populate it. Could potentially cache this translated |
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175 | * index buffer with the original to avoid future |
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176 | * re-translations. Not much point if we're just accelerating |
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177 | * GL though, as index buffers are typically used only once |
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178 | * there. |
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179 | */ |
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180 | ret = translate_indices(hwtnl, |
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181 | index_buffer, |
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182 | start * index_size, |
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183 | gen_prim, gen_nr, gen_size, gen_func, &gen_buf); |
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184 | if (ret != PIPE_OK) |
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185 | goto done; |
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186 | |||
187 | ret = svga_hwtnl_simple_draw_range_elements(hwtnl, |
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188 | gen_buf, |
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189 | gen_size, |
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190 | index_bias, |
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191 | min_index, |
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192 | max_index, |
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193 | gen_prim, 0, gen_nr); |
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194 | if (ret != PIPE_OK) |
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195 | goto done; |
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196 | |||
197 | done: |
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198 | if (gen_buf) |
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199 | pipe_resource_reference(&gen_buf, NULL); |
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200 | |||
201 | return ret; |
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202 | } |
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203 | } |