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4358 | Serge | 1 | /************************************************************************** |
2 | * |
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3 | * Copyright 2007 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 portions |
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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 | /* |
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29 | * This file implements the st_draw_vbo() function which is called from |
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30 | * Mesa's VBO module. All point/line/triangle rendering is done through |
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31 | * this function whether the user called glBegin/End, glDrawArrays, |
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32 | * glDrawElements, glEvalMesh, or glCalList, etc. |
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33 | * |
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34 | * Authors: |
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35 | * Keith Whitwell |
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36 | */ |
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37 | |||
38 | |||
39 | #include "main/imports.h" |
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40 | #include "main/image.h" |
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41 | #include "main/bufferobj.h" |
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42 | #include "main/macros.h" |
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43 | |||
44 | #include "vbo/vbo.h" |
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45 | |||
46 | #include "st_context.h" |
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47 | #include "st_atom.h" |
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48 | #include "st_cb_bufferobjects.h" |
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49 | #include "st_cb_xformfb.h" |
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50 | #include "st_debug.h" |
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51 | #include "st_draw.h" |
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52 | #include "st_program.h" |
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53 | |||
54 | #include "pipe/p_context.h" |
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55 | #include "pipe/p_defines.h" |
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56 | #include "util/u_inlines.h" |
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57 | #include "util/u_format.h" |
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58 | #include "util/u_prim.h" |
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59 | #include "util/u_draw_quad.h" |
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60 | #include "util/u_upload_mgr.h" |
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61 | #include "draw/draw_context.h" |
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62 | #include "cso_cache/cso_context.h" |
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63 | |||
64 | #include "../glsl/ir_uniform.h" |
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65 | |||
66 | |||
67 | /** |
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68 | * This is very similar to vbo_all_varyings_in_vbos() but we are |
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69 | * only interested in per-vertex data. See bug 38626. |
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70 | */ |
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71 | static GLboolean |
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72 | all_varyings_in_vbos(const struct gl_client_array *arrays[]) |
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73 | { |
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74 | GLuint i; |
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75 | |||
76 | for (i = 0; i < VERT_ATTRIB_MAX; i++) |
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77 | if (arrays[i]->StrideB && |
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78 | !arrays[i]->InstanceDivisor && |
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79 | !_mesa_is_bufferobj(arrays[i]->BufferObj)) |
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80 | return GL_FALSE; |
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81 | |||
82 | return GL_TRUE; |
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83 | } |
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84 | |||
85 | |||
86 | /** |
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87 | * Basically, translate Mesa's index buffer information into |
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88 | * a pipe_index_buffer object. |
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89 | * \return TRUE or FALSE for success/failure |
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90 | */ |
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91 | static boolean |
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92 | setup_index_buffer(struct st_context *st, |
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93 | const struct _mesa_index_buffer *ib, |
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94 | struct pipe_index_buffer *ibuffer) |
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95 | { |
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96 | struct gl_buffer_object *bufobj = ib->obj; |
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97 | |||
98 | ibuffer->index_size = vbo_sizeof_ib_type(ib->type); |
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99 | |||
100 | /* get/create the index buffer object */ |
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101 | if (_mesa_is_bufferobj(bufobj)) { |
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102 | /* indices are in a real VBO */ |
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103 | ibuffer->buffer = st_buffer_object(bufobj)->buffer; |
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104 | ibuffer->offset = pointer_to_offset(ib->ptr); |
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105 | } |
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106 | else if (st->indexbuf_uploader) { |
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107 | if (u_upload_data(st->indexbuf_uploader, 0, |
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108 | ib->count * ibuffer->index_size, ib->ptr, |
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109 | &ibuffer->offset, &ibuffer->buffer) != PIPE_OK) { |
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110 | /* out of memory */ |
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111 | return FALSE; |
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112 | } |
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113 | u_upload_unmap(st->indexbuf_uploader); |
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114 | } |
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115 | else { |
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116 | /* indices are in user space memory */ |
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117 | ibuffer->user_buffer = ib->ptr; |
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118 | } |
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119 | |||
120 | cso_set_index_buffer(st->cso_context, ibuffer); |
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121 | return TRUE; |
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122 | } |
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123 | |||
124 | |||
125 | /** |
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126 | * Prior to drawing, check that any uniforms referenced by the |
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127 | * current shader have been set. If a uniform has not been set, |
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128 | * issue a warning. |
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129 | */ |
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130 | static void |
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131 | check_uniforms(struct gl_context *ctx) |
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132 | { |
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133 | struct gl_shader_program *shProg[3] = { |
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134 | ctx->Shader.CurrentVertexProgram, |
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135 | ctx->Shader.CurrentGeometryProgram, |
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136 | ctx->Shader.CurrentFragmentProgram, |
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137 | }; |
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138 | unsigned j; |
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139 | |||
140 | for (j = 0; j < 3; j++) { |
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141 | unsigned i; |
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142 | |||
143 | if (shProg[j] == NULL || !shProg[j]->LinkStatus) |
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144 | continue; |
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145 | |||
146 | for (i = 0; i < shProg[j]->NumUserUniformStorage; i++) { |
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147 | const struct gl_uniform_storage *u = &shProg[j]->UniformStorage[i]; |
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148 | if (!u->initialized) { |
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149 | _mesa_warning(ctx, |
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150 | "Using shader with uninitialized uniform: %s", |
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151 | u->name); |
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152 | } |
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153 | } |
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154 | } |
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155 | } |
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156 | |||
157 | |||
158 | /** |
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159 | * Translate OpenGL primtive type (GL_POINTS, GL_TRIANGLE_STRIP, etc) to |
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160 | * the corresponding Gallium type. |
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161 | */ |
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162 | static unsigned |
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163 | translate_prim(const struct gl_context *ctx, unsigned prim) |
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164 | { |
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165 | /* GL prims should match Gallium prims, spot-check a few */ |
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166 | STATIC_ASSERT(GL_POINTS == PIPE_PRIM_POINTS); |
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167 | STATIC_ASSERT(GL_QUADS == PIPE_PRIM_QUADS); |
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168 | STATIC_ASSERT(GL_TRIANGLE_STRIP_ADJACENCY == PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY); |
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169 | |||
170 | /* Avoid quadstrips if it's easy to do so: |
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171 | * Note: it's important to do the correct trimming if we change the |
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172 | * prim type! We do that wherever this function is called. |
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173 | */ |
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174 | if (prim == GL_QUAD_STRIP && |
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175 | ctx->Light.ShadeModel != GL_FLAT && |
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176 | ctx->Polygon.FrontMode == GL_FILL && |
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177 | ctx->Polygon.BackMode == GL_FILL) |
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178 | prim = GL_TRIANGLE_STRIP; |
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179 | |||
180 | return prim; |
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181 | } |
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182 | |||
183 | |||
184 | /** |
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185 | * This function gets plugged into the VBO module and is called when |
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186 | * we have something to render. |
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187 | * Basically, translate the information into the format expected by gallium. |
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188 | */ |
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189 | void |
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190 | st_draw_vbo(struct gl_context *ctx, |
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191 | const struct _mesa_prim *prims, |
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192 | GLuint nr_prims, |
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193 | const struct _mesa_index_buffer *ib, |
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194 | GLboolean index_bounds_valid, |
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195 | GLuint min_index, |
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196 | GLuint max_index, |
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197 | struct gl_transform_feedback_object *tfb_vertcount) |
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198 | { |
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199 | struct st_context *st = st_context(ctx); |
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200 | struct pipe_index_buffer ibuffer = {0}; |
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201 | struct pipe_draw_info info; |
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202 | const struct gl_client_array **arrays = ctx->Array._DrawArrays; |
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203 | unsigned i; |
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204 | |||
205 | /* Mesa core state should have been validated already */ |
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206 | assert(ctx->NewState == 0x0); |
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207 | |||
208 | /* Validate state. */ |
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209 | if (st->dirty.st || ctx->NewDriverState) { |
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210 | st_validate_state(st); |
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211 | |||
212 | #if 0 |
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213 | if (MESA_VERBOSE & VERBOSE_GLSL) { |
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214 | check_uniforms(ctx); |
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215 | } |
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216 | #else |
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217 | (void) check_uniforms; |
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218 | #endif |
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219 | } |
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220 | |||
4401 | Serge | 221 | if (st->vertex_array_out_of_memory) { |
222 | return; |
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223 | } |
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224 | |||
4358 | Serge | 225 | util_draw_init_info(&info); |
226 | if (ib) { |
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227 | /* Get index bounds for user buffers. */ |
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228 | if (!index_bounds_valid) |
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229 | if (!all_varyings_in_vbos(arrays)) |
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230 | vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, |
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231 | nr_prims); |
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232 | |||
233 | if (!setup_index_buffer(st, ib, &ibuffer)) { |
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234 | _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBegin/DrawElements/DrawArray"); |
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235 | return; |
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236 | } |
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237 | |||
238 | info.indexed = TRUE; |
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239 | if (min_index != ~0 && max_index != ~0) { |
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240 | info.min_index = min_index; |
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241 | info.max_index = max_index; |
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242 | } |
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243 | |||
244 | /* The VBO module handles restart for the non-indexed GLDrawArrays |
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245 | * so we only set these fields for indexed drawing: |
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246 | */ |
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247 | info.primitive_restart = ctx->Array._PrimitiveRestart; |
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248 | info.restart_index = ctx->Array.RestartIndex; |
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249 | } |
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250 | else { |
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251 | /* Transform feedback drawing is always non-indexed. */ |
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252 | /* Set info.count_from_stream_output. */ |
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253 | if (tfb_vertcount) { |
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254 | st_transform_feedback_draw_init(tfb_vertcount, &info); |
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255 | } |
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256 | } |
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257 | |||
258 | /* do actual drawing */ |
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259 | for (i = 0; i < nr_prims; i++) { |
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260 | info.mode = translate_prim( ctx, prims[i].mode ); |
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261 | info.start = prims[i].start; |
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262 | info.count = prims[i].count; |
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263 | info.start_instance = prims[i].base_instance; |
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264 | info.instance_count = prims[i].num_instances; |
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265 | info.index_bias = prims[i].basevertex; |
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266 | if (!ib) { |
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267 | info.min_index = info.start; |
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268 | info.max_index = info.start + info.count - 1; |
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269 | } |
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270 | |||
271 | if (ST_DEBUG & DEBUG_DRAW) { |
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272 | debug_printf("st/draw: mode %s start %u count %u indexed %d\n", |
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273 | u_prim_name(info.mode), |
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274 | info.start, |
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275 | info.count, |
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276 | info.indexed); |
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277 | } |
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278 | |||
279 | if (info.count_from_stream_output) { |
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280 | cso_draw_vbo(st->cso_context, &info); |
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281 | } |
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282 | else if (info.primitive_restart) { |
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283 | /* don't trim, restarts might be inside index list */ |
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284 | cso_draw_vbo(st->cso_context, &info); |
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285 | } |
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286 | else if (u_trim_pipe_prim(prims[i].mode, &info.count)) |
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287 | cso_draw_vbo(st->cso_context, &info); |
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288 | } |
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289 | |||
290 | if (ib && st->indexbuf_uploader && !_mesa_is_bufferobj(ib->obj)) { |
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291 | pipe_resource_reference(&ibuffer.buffer, NULL); |
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292 | } |
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293 | } |
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294 | |||
295 | |||
296 | void |
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297 | st_init_draw(struct st_context *st) |
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298 | { |
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299 | struct gl_context *ctx = st->ctx; |
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300 | |||
301 | vbo_set_draw_func(ctx, st_draw_vbo); |
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302 | |||
303 | st->draw = draw_create(st->pipe); /* for selection/feedback */ |
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304 | |||
305 | /* Disable draw options that might convert points/lines to tris, etc. |
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306 | * as that would foul-up feedback/selection mode. |
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307 | */ |
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308 | draw_wide_line_threshold(st->draw, 1000.0f); |
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309 | draw_wide_point_threshold(st->draw, 1000.0f); |
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310 | draw_enable_line_stipple(st->draw, FALSE); |
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311 | draw_enable_point_sprites(st->draw, FALSE); |
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312 | } |
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313 | |||
314 | |||
315 | void |
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316 | st_destroy_draw(struct st_context *st) |
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317 | { |
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318 | draw_destroy(st->draw); |
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319 | }>>>> |