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4358 | Serge | 1 | /************************************************************************** |
2 | * |
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3 | * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. |
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4 | * All Rights Reserved. |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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7 | * copy of this software and associated documentation files (the |
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8 | * "Software"), to deal in the Software without restriction, including |
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9 | * without limitation the rights to use, copy, modify, merge, publish, |
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10 | * distribute, sub license, and/or sell copies of the Software, and to |
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11 | * permit persons to whom the Software is furnished to do so, subject to |
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12 | * the following conditions: |
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13 | * |
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14 | * The above copyright notice and this permission notice (including the |
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15 | * next paragraph) shall be included in all copies or substantial portionsalloc |
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16 | * of the Software. |
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17 | * |
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18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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21 | * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR |
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22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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25 | * |
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26 | **************************************************************************/ |
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27 | |||
28 | #include "main/glheader.h" |
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29 | #include "main/enums.h" |
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30 | #include "main/image.h" |
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31 | #include "main/colormac.h" |
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32 | #include "main/condrender.h" |
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33 | #include "main/mtypes.h" |
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34 | #include "main/macros.h" |
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35 | #include "main/pbo.h" |
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36 | #include "main/bufferobj.h" |
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37 | #include "main/state.h" |
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38 | #include "main/texobj.h" |
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39 | #include "main/context.h" |
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40 | #include "main/fbobject.h" |
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41 | #include "swrast/swrast.h" |
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42 | #include "drivers/common/meta.h" |
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43 | |||
44 | #include "intel_screen.h" |
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45 | #include "intel_context.h" |
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46 | #include "intel_batchbuffer.h" |
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47 | #include "intel_blit.h" |
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48 | #include "intel_fbo.h" |
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49 | #include "intel_regions.h" |
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50 | #include "intel_buffers.h" |
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51 | #include "intel_pixel.h" |
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52 | #include "intel_reg.h" |
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53 | |||
54 | |||
55 | #define FILE_DEBUG_FLAG DEBUG_PIXEL |
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56 | |||
57 | |||
58 | /* Unlike the other intel_pixel_* functions, the expectation here is |
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59 | * that the incoming data is not in a PBO. With the XY_TEXT blit |
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60 | * method, there's no benefit haveing it in a PBO, but we could |
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61 | * implement a path based on XY_MONO_SRC_COPY_BLIT which might benefit |
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62 | * PBO bitmaps. I think they are probably pretty rare though - I |
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63 | * wonder if Xgl uses them? |
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64 | */ |
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65 | static const GLubyte *map_pbo( struct gl_context *ctx, |
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66 | GLsizei width, GLsizei height, |
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67 | const struct gl_pixelstore_attrib *unpack, |
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68 | const GLubyte *bitmap ) |
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69 | { |
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70 | GLubyte *buf; |
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71 | |||
72 | if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, |
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73 | GL_COLOR_INDEX, GL_BITMAP, |
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74 | INT_MAX, (const GLvoid *) bitmap)) { |
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75 | _mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)"); |
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76 | return NULL; |
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77 | } |
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78 | |||
79 | buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, unpack->BufferObj->Size, |
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80 | GL_MAP_READ_BIT, |
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81 | unpack->BufferObj); |
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82 | if (!buf) { |
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83 | _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)"); |
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84 | return NULL; |
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85 | } |
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86 | |||
87 | return ADD_POINTERS(buf, bitmap); |
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88 | } |
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89 | |||
90 | static bool test_bit( const GLubyte *src, GLuint bit ) |
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91 | { |
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92 | return (src[bit/8] & (1<<(bit % 8))) ? 1 : 0; |
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93 | } |
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94 | |||
95 | static void set_bit( GLubyte *dest, GLuint bit ) |
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96 | { |
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97 | dest[bit/8] |= 1 << (bit % 8); |
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98 | } |
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99 | |||
100 | /* Extract a rectangle's worth of data from the bitmap. Called |
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101 | * per chunk of HW-sized bitmap. |
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102 | */ |
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103 | static GLuint get_bitmap_rect(GLsizei width, GLsizei height, |
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104 | const struct gl_pixelstore_attrib *unpack, |
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105 | const GLubyte *bitmap, |
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106 | GLuint x, GLuint y, |
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107 | GLuint w, GLuint h, |
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108 | GLubyte *dest, |
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109 | GLuint row_align, |
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110 | bool invert) |
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111 | { |
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112 | GLuint src_offset = (x + unpack->SkipPixels) & 0x7; |
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113 | GLuint mask = unpack->LsbFirst ? 0 : 7; |
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114 | GLuint bit = 0; |
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115 | GLint row, col; |
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116 | GLint first, last; |
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117 | GLint incr; |
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118 | GLuint count = 0; |
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119 | |||
120 | DBG("%s %d,%d %dx%d bitmap %dx%d skip %d src_offset %d mask %d\n", |
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121 | __FUNCTION__, x,y,w,h,width,height,unpack->SkipPixels, src_offset, mask); |
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122 | |||
123 | if (invert) { |
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124 | first = h-1; |
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125 | last = 0; |
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126 | incr = -1; |
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127 | } |
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128 | else { |
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129 | first = 0; |
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130 | last = h-1; |
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131 | incr = 1; |
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132 | } |
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133 | |||
134 | /* Require that dest be pre-zero'd. |
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135 | */ |
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136 | for (row = first; row != (last+incr); row += incr) { |
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137 | const GLubyte *rowsrc = _mesa_image_address2d(unpack, bitmap, |
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138 | width, height, |
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139 | GL_COLOR_INDEX, GL_BITMAP, |
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140 | y + row, x); |
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141 | |||
142 | for (col = 0; col < w; col++, bit++) { |
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143 | if (test_bit(rowsrc, (col + src_offset) ^ mask)) { |
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144 | set_bit(dest, bit ^ 7); |
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145 | count++; |
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146 | } |
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147 | } |
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148 | |||
149 | if (row_align) |
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150 | bit = ALIGN(bit, row_align); |
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151 | } |
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152 | |||
153 | return count; |
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154 | } |
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155 | |||
156 | /** |
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157 | * Returns the low Y value of the vertical range given, flipped according to |
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158 | * whether the framebuffer is or not. |
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159 | */ |
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160 | static INLINE int |
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161 | y_flip(struct gl_framebuffer *fb, int y, int height) |
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162 | { |
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163 | if (_mesa_is_user_fbo(fb)) |
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164 | return y; |
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165 | else |
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166 | return fb->Height - y - height; |
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167 | } |
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168 | |||
169 | /* |
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170 | * Render a bitmap. |
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171 | */ |
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172 | static bool |
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173 | do_blit_bitmap( struct gl_context *ctx, |
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174 | GLint dstx, GLint dsty, |
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175 | GLsizei width, GLsizei height, |
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176 | const struct gl_pixelstore_attrib *unpack, |
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177 | const GLubyte *bitmap ) |
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178 | { |
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179 | struct intel_context *intel = intel_context(ctx); |
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180 | struct gl_framebuffer *fb = ctx->DrawBuffer; |
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181 | struct intel_renderbuffer *irb; |
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182 | GLfloat tmpColor[4]; |
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183 | GLubyte ubcolor[4]; |
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184 | GLuint color; |
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185 | GLsizei bitmap_width = width; |
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186 | GLsizei bitmap_height = height; |
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187 | GLint px, py; |
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188 | GLuint stipple[32]; |
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189 | GLint orig_dstx = dstx; |
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190 | GLint orig_dsty = dsty; |
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191 | |||
192 | /* Update draw buffer bounds */ |
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193 | _mesa_update_state(ctx); |
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194 | |||
195 | if (ctx->Depth.Test) { |
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196 | /* The blit path produces incorrect results when depth testing is on. |
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197 | * It seems the blit Z coord is always 1.0 (the far plane) so fragments |
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198 | * will likely be obscured by other, closer geometry. |
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199 | */ |
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200 | return false; |
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201 | } |
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202 | |||
203 | intel_prepare_render(intel); |
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204 | |||
205 | if (fb->_NumColorDrawBuffers != 1) { |
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206 | perf_debug("accelerated glBitmap() only supports rendering to a " |
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207 | "single color buffer\n"); |
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208 | return false; |
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209 | } |
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210 | |||
211 | irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]); |
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212 | |||
213 | if (_mesa_is_bufferobj(unpack->BufferObj)) { |
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214 | bitmap = map_pbo(ctx, width, height, unpack, bitmap); |
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215 | if (bitmap == NULL) |
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216 | return true; /* even though this is an error, we're done */ |
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217 | } |
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218 | |||
219 | COPY_4V(tmpColor, ctx->Current.RasterColor); |
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220 | |||
221 | if (_mesa_need_secondary_color(ctx)) { |
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222 | ADD_3V(tmpColor, tmpColor, ctx->Current.RasterSecondaryColor); |
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223 | } |
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224 | |||
225 | UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[0], tmpColor[0]); |
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226 | UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[1], tmpColor[1]); |
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227 | UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[2], tmpColor[2]); |
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228 | UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[3], tmpColor[3]); |
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229 | |||
230 | switch (irb->mt->format) { |
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231 | case MESA_FORMAT_ARGB8888: |
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232 | case MESA_FORMAT_XRGB8888: |
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233 | color = PACK_COLOR_8888(ubcolor[3], ubcolor[0], ubcolor[1], ubcolor[2]); |
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234 | break; |
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235 | case MESA_FORMAT_RGB565: |
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236 | color = PACK_COLOR_565(ubcolor[0], ubcolor[1], ubcolor[2]); |
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237 | break; |
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238 | default: |
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239 | perf_debug("Unsupported format %s in accelerated glBitmap()\n", |
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240 | _mesa_get_format_name(irb->mt->format)); |
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241 | return false; |
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242 | } |
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243 | |||
244 | if (!intel_check_blit_fragment_ops(ctx, tmpColor[3] == 1.0F)) |
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245 | return false; |
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246 | |||
247 | /* Clip to buffer bounds and scissor. */ |
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248 | if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin, |
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249 | fb->_Xmax, fb->_Ymax, |
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250 | &dstx, &dsty, &width, &height)) |
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251 | goto out; |
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252 | |||
253 | dsty = y_flip(fb, dsty, height); |
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254 | |||
255 | #define DY 32 |
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256 | #define DX 32 |
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257 | |||
258 | /* Chop it all into chunks that can be digested by hardware: */ |
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259 | for (py = 0; py < height; py += DY) { |
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260 | for (px = 0; px < width; px += DX) { |
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261 | int h = MIN2(DY, height - py); |
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262 | int w = MIN2(DX, width - px); |
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263 | GLuint sz = ALIGN(ALIGN(w,8) * h, 64)/8; |
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264 | GLenum logic_op = ctx->Color.ColorLogicOpEnabled ? |
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265 | ctx->Color.LogicOp : GL_COPY; |
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266 | |||
267 | assert(sz <= sizeof(stipple)); |
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268 | memset(stipple, 0, sz); |
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269 | |||
270 | /* May need to adjust this when padding has been introduced in |
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271 | * sz above: |
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272 | * |
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273 | * Have to translate destination coordinates back into source |
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274 | * coordinates. |
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275 | */ |
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276 | int count = get_bitmap_rect(bitmap_width, bitmap_height, unpack, |
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277 | bitmap, |
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278 | -orig_dstx + (dstx + px), |
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279 | -orig_dsty + y_flip(fb, dsty + py, h), |
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280 | w, h, |
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281 | (GLubyte *)stipple, |
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282 | 8, |
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283 | _mesa_is_winsys_fbo(fb)); |
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284 | if (count == 0) |
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285 | continue; |
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286 | |||
287 | if (!intelEmitImmediateColorExpandBlit(intel, |
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288 | irb->mt->cpp, |
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289 | (GLubyte *)stipple, |
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290 | sz, |
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291 | color, |
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292 | irb->mt->region->pitch, |
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293 | irb->mt->region->bo, |
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294 | 0, |
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295 | irb->mt->region->tiling, |
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296 | dstx + px, |
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297 | dsty + py, |
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298 | w, h, |
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299 | logic_op)) { |
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300 | return false; |
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301 | } |
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302 | |||
303 | if (ctx->Query.CurrentOcclusionObject) |
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304 | ctx->Query.CurrentOcclusionObject->Result += count; |
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305 | } |
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306 | } |
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307 | out: |
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308 | |||
309 | if (unlikely(INTEL_DEBUG & DEBUG_SYNC)) |
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310 | intel_batchbuffer_flush(intel); |
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311 | |||
312 | if (_mesa_is_bufferobj(unpack->BufferObj)) { |
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313 | /* done with PBO so unmap it now */ |
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314 | ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj); |
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315 | } |
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316 | |||
317 | intel_check_front_buffer_rendering(intel); |
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318 | |||
319 | return true; |
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320 | } |
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321 | |||
322 | |||
323 | /* There are a large number of possible ways to implement bitmap on |
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324 | * this hardware, most of them have some sort of drawback. Here are a |
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325 | * few that spring to mind: |
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326 | * |
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327 | * Blit: |
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328 | * - XY_MONO_SRC_BLT_CMD |
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329 | * - use XY_SETUP_CLIP_BLT for cliprect clipping. |
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330 | * - XY_TEXT_BLT |
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331 | * - XY_TEXT_IMMEDIATE_BLT |
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332 | * - blit per cliprect, subject to maximum immediate data size. |
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333 | * - XY_COLOR_BLT |
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334 | * - per pixel or run of pixels |
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335 | * - XY_PIXEL_BLT |
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336 | * - good for sparse bitmaps |
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337 | * |
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338 | * 3D engine: |
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339 | * - Point per pixel |
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340 | * - Translate bitmap to an alpha texture and render as a quad |
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341 | * - Chop bitmap up into 32x32 squares and render w/polygon stipple. |
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342 | */ |
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343 | void |
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344 | intelBitmap(struct gl_context * ctx, |
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345 | GLint x, GLint y, |
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346 | GLsizei width, GLsizei height, |
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347 | const struct gl_pixelstore_attrib *unpack, |
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348 | const GLubyte * pixels) |
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349 | { |
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350 | if (!_mesa_check_conditional_render(ctx)) |
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351 | return; |
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352 | |||
353 | if (do_blit_bitmap(ctx, x, y, width, height, |
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354 | unpack, pixels)) |
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355 | return; |
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356 | |||
357 | _mesa_meta_Bitmap(ctx, x, y, width, height, unpack, pixels); |
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358 | }=>>>>><>(bit><(bit> |