gpu/command_buffer/common/capabilities.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef GPU_COMMAND_BUFFER_COMMON_CAPABILITIES_H_
   6 #define GPU_COMMAND_BUFFER_COMMON_CAPABILITIES_H_
   7
   8 #include <stdint.h>
   9
  10 #include "gpu/gpu_export.h"
  11
  12 // From gl2.h. We want to avoid including gl headers because client-side and
  13 // service-side headers conflict.
  14 #define GL_FRAGMENT_SHADER 0x8B30
  15 #define GL_VERTEX_SHADER 0x8B31
  16 #define GL_LOW_FLOAT 0x8DF0
  17 #define GL_MEDIUM_FLOAT 0x8DF1
  18 #define GL_HIGH_FLOAT 0x8DF2
  19 #define GL_LOW_INT 0x8DF3
  20 #define GL_MEDIUM_INT 0x8DF4
  21 #define GL_HIGH_INT 0x8DF5
  22
  23 namespace gpu {
  24
  25 // NOTE: When adding members to this struct, also add corresponding
  26 // entries in gpu/ipc/gpu_command_buffer_traits_multi.h.
  27
  28 struct GPU_EXPORT Capabilities {
  29   struct ShaderPrecision {
  30     ShaderPrecision() : min_range(0), max_range(0), precision(0) {}
  31     int min_range;
  32     int max_range;
  33     int precision;
  34   };
  35
  36   struct PerStagePrecisions {
  37     PerStagePrecisions();
  38
  39     ShaderPrecision low_int;
  40     ShaderPrecision medium_int;
  41     ShaderPrecision high_int;
  42     ShaderPrecision low_float;
  43     ShaderPrecision medium_float;
  44     ShaderPrecision high_float;
  45   };
  46
  47   Capabilities();
  48
  49   template <typename T>
  50   void VisitStagePrecisions(unsigned stage,
  51                             PerStagePrecisions* precisions,
  52                             const T& visitor) {
  53     visitor(stage, GL_LOW_INT, &precisions->low_int);
  54     visitor(stage, GL_MEDIUM_INT, &precisions->medium_int);
  55     visitor(stage, GL_HIGH_INT, &precisions->high_int);
  56     visitor(stage, GL_LOW_FLOAT, &precisions->low_float);
  57     visitor(stage, GL_MEDIUM_FLOAT, &precisions->medium_float);
  58     visitor(stage, GL_HIGH_FLOAT, &precisions->high_float);
  59   }
  60
  61   template <typename T>
  62   void VisitPrecisions(const T& visitor) {
  63     VisitStagePrecisions(GL_VERTEX_SHADER, &vertex_shader_precisions, visitor);
  64     VisitStagePrecisions(GL_FRAGMENT_SHADER, &fragment_shader_precisions,
  65                          visitor);
  66   }
  67
  68   PerStagePrecisions vertex_shader_precisions;
  69   PerStagePrecisions fragment_shader_precisions;
  70   int max_combined_texture_image_units;
  71   int max_cube_map_texture_size;
  72   int max_fragment_uniform_vectors;
  73   int max_renderbuffer_size;
  74   int max_texture_image_units;
  75   int max_texture_size;
  76   int max_varying_vectors;
  77   int max_vertex_attribs;
  78   int max_vertex_texture_image_units;
  79   int max_vertex_uniform_vectors;
  80   int num_compressed_texture_formats;
  81   int num_shader_binary_formats;
  82   int bind_generates_resource_chromium;
  83
  84   int max_3d_texture_size;
  85   int max_array_texture_layers;
  86   int max_color_attachments;
  87   int64_t max_combined_fragment_uniform_components;
  88   int max_combined_uniform_blocks;
  89   int64_t max_combined_vertex_uniform_components;
  90   int max_copy_texture_chromium_size;
  91   int max_draw_buffers;
  92   int64_t max_element_index;
  93   int max_elements_indices;
  94   int max_elements_vertices;
  95   int max_fragment_input_components;
  96   int max_fragment_uniform_blocks;
  97   int max_fragment_uniform_components;
  98   int max_program_texel_offset;
  99   int max_samples;
 100   int64_t max_server_wait_timeout;
 101   float max_texture_lod_bias;
 102   int max_transform_feedback_interleaved_components;
 103   int max_transform_feedback_separate_attribs;
 104   int max_transform_feedback_separate_components;
 105   int64_t max_uniform_block_size;
 106   int max_uniform_buffer_bindings;
 107   int max_varying_components;
 108   int max_vertex_output_components;
 109   int max_vertex_uniform_blocks;
 110   int max_vertex_uniform_components;
 111   int min_program_texel_offset;
 112   int num_extensions;
 113   int num_program_binary_formats;
 114   int uniform_buffer_offset_alignment;
 115
 116   bool post_sub_buffer;
 117   bool egl_image_external;
 118   bool texture_format_atc;
 119   bool texture_format_bgra8888;
 120   bool texture_format_dxt1;
 121   bool texture_format_dxt5;
 122   bool texture_format_etc1;
 123   bool texture_format_etc1_npot;
 124   bool texture_rectangle;
 125   bool iosurface;
 126   bool texture_usage;
 127   bool texture_storage;
 128   bool discard_framebuffer;
 129   bool sync_query;
 130   bool image;
 131   bool future_sync_points;
 132   bool blend_equation_advanced;
 133   bool blend_equation_advanced_coherent;
 134   bool texture_rg;
 135   bool render_buffer_format_bgra8888;
 136   bool occlusion_query_boolean;
 137   bool timer_queries;
 138   bool surfaceless;
 139
 140   int major_version;
 141   int minor_version;
 142 };
 143
 144 }  // namespace gpu
 145
 146 #endif  // GPU_COMMAND_BUFFER_COMMON_CAPABILITIES_H_