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 portions 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 #ifndef INTEL_FBO_H 27 #define INTEL_FBO_H 28 29 #include <stdbool.h> 30 #include <assert.h> 31 #include "main/formats.h" 32 #include "main/macros.h" 33 #include "brw_context.h" 34 #include "intel_mipmap_tree.h" 35 #include "intel_screen.h" 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 struct intel_mipmap_tree; 42 43 /** 44 * Intel renderbuffer, derived from gl_renderbuffer. 45 */ 46 struct intel_renderbuffer 47 { 48 struct swrast_renderbuffer Base; 49 /** 50 * The real renderbuffer storage. 51 * 52 * This is multisampled if NumSamples is > 1. 53 */ 54 struct intel_mipmap_tree *mt; 55 56 /** 57 * Downsampled contents for window-system MSAA renderbuffers. 58 * 59 * For window system MSAA color buffers, the singlesample_mt is shared with 60 * other processes in DRI2 (and in DRI3, it's the image buffer managed by 61 * glx_dri3.c), while mt is private to our process. To do a swapbuffers, 62 * we have to downsample out of mt into singlesample_mt. For depth and 63 * stencil buffers, the singlesample_mt is also private, and since we don't 64 * expect to need to do resolves (except if someone does a glReadPixels() 65 * or glCopyTexImage()), we just temporarily allocate singlesample_mt when 66 * asked to map the renderbuffer. 67 */ 68 struct intel_mipmap_tree *singlesample_mt; 69 70 /** 71 * \name Miptree view 72 * \{ 73 * 74 * Multiple renderbuffers may simultaneously wrap a single texture and each 75 * provide a different view into that texture. The fields below indicate 76 * which miptree slice is wrapped by this renderbuffer. The fields' values 77 * are consistent with the 'level' and 'layer' parameters of 78 * glFramebufferTextureLayer(). 79 * 80 * For renderbuffers not created with glFramebufferTexture*(), mt_level and 81 * mt_layer are 0. 82 * 83 * Note: for a 2D multisample array texture on Gen7+ using 84 * INTEL_MSAA_LAYOUT_UMS or INTEL_MSAA_LAYOUT_CMS, mt_layer is the physical 85 * layer holding sample 0. So, for example, if mt->num_samples == 4, then 86 * logical layer n corresponds to mt_layer == 4*n. 87 */ 88 unsigned int mt_level; 89 unsigned int mt_layer; 90 91 /* The number of attached logical layers. */ 92 unsigned int layer_count; 93 /** \} */ 94 95 GLuint draw_x, draw_y; /**< Offset of drawing within the region */ 96 97 /** 98 * Set to true at every draw call, to indicate if a window-system 99 * renderbuffer needs to be downsampled before using singlesample_mt. 100 */ 101 bool need_downsample; 102 103 /** 104 * Set to true when doing an intel_renderbuffer_map()/unmap() that requires 105 * an upsample at the end. 106 */ 107 bool need_map_upsample; 108 109 /** 110 * Set to true if singlesample_mt is temporary storage that persists only 111 * for the duration of a mapping. 112 */ 113 bool singlesample_mt_is_tmp; 114 }; 115 116 117 /** 118 * gl_renderbuffer is a base class which we subclass. The Class field 119 * is used for simple run-time type checking. 120 */ 121 #define INTEL_RB_CLASS 0x12345678 122 123 124 /** 125 * Return a gl_renderbuffer ptr casted to intel_renderbuffer. 126 * NULL will be returned if the rb isn't really an intel_renderbuffer. 127 * This is determined by checking the ClassID. 128 */ 129 static inline struct intel_renderbuffer * 130 intel_renderbuffer(struct gl_renderbuffer *rb) 131 { 132 struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb; 133 if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS) 134 return irb; 135 else 136 return NULL; 137 } 138 139 140 /** 141 * \brief Return the framebuffer attachment specified by attIndex. 142 * 143 * If the framebuffer lacks the specified attachment, then return null. 144 * 145 * If the attached renderbuffer is a wrapper, then return wrapped 146 * renderbuffer. 147 */ 148 static inline struct intel_renderbuffer * 149 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex) 150 { 151 struct gl_renderbuffer *rb; 152 153 assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment)); 154 155 rb = fb->Attachment[attIndex].Renderbuffer; 156 if (!rb) 157 return NULL; 158 159 return intel_renderbuffer(rb); 160 } 161 162 163 static inline mesa_format 164 intel_rb_format(const struct intel_renderbuffer *rb) 165 { 166 return rb->Base.Base.Format; 167 } 168 169 extern struct intel_renderbuffer * 170 intel_create_renderbuffer(mesa_format format, unsigned num_samples); 171 172 struct intel_renderbuffer * 173 intel_create_private_renderbuffer(mesa_format format, unsigned num_samples); 174 175 struct gl_renderbuffer* 176 intel_create_wrapped_renderbuffer(struct gl_context * ctx, 177 int width, int height, 178 mesa_format format); 179 180 extern void 181 intel_fbo_init(struct brw_context *brw); 182 183 void 184 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb); 185 186 static inline uint32_t 187 intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer *irb, 188 uint32_t *tile_x, 189 uint32_t *tile_y) 190 { 191 return intel_miptree_get_tile_offsets(irb->mt, irb->mt_level, irb->mt_layer, 192 tile_x, tile_y); 193 } 194 195 bool 196 intel_renderbuffer_has_hiz(struct intel_renderbuffer *irb); 197 198 void 199 intel_renderbuffer_att_set_needs_depth_resolve(struct gl_renderbuffer_attachment *att); 200 201 202 /** 203 * \brief Perform a HiZ resolve on the renderbuffer. 204 * 205 * It is safe to call this function on a renderbuffer without HiZ. In that 206 * case, the function is a no-op. 207 * 208 * \return false if no resolve was needed 209 */ 210 bool 211 intel_renderbuffer_resolve_hiz(struct brw_context *brw, 212 struct intel_renderbuffer *irb); 213 214 /** 215 * \brief Perform a depth resolve on the renderbuffer. 216 * 217 * It is safe to call this function on a renderbuffer without HiZ. In that 218 * case, the function is a no-op. 219 * 220 * \return false if no resolve was needed 221 */ 222 bool 223 intel_renderbuffer_resolve_depth(struct brw_context *brw, 224 struct intel_renderbuffer *irb); 225 226 void intel_renderbuffer_move_to_temp(struct brw_context *brw, 227 struct intel_renderbuffer *irb, 228 bool invalidate); 229 230 void 231 intel_renderbuffer_downsample(struct brw_context *brw, 232 struct intel_renderbuffer *irb); 233 234 void 235 intel_renderbuffer_upsample(struct brw_context *brw, 236 struct intel_renderbuffer *irb); 237 238 void brw_render_cache_set_clear(struct brw_context *brw); 239 void brw_render_cache_set_add_bo(struct brw_context *brw, drm_intel_bo *bo); 240 void brw_render_cache_set_check_flush(struct brw_context *brw, drm_intel_bo *bo); 241 242 unsigned 243 intel_quantize_num_samples(struct intel_screen *intel, unsigned num_samples); 244 245 #ifdef __cplusplus 246 } 247 #endif 248 249 #endif /* INTEL_FBO_H */ 250
