source/backends/vulkan/blend_backend.cpp

   1 #include "blend.h"
   2 #include "blend_backend.h"
   3 #include "vulkan.h"
   4
   5 using namespace std;
   6
   7 namespace Msp {
   8 namespace GL {
   9
  10 unsigned get_vulkan_blend_equation(BlendEquation eq)
  11 {
  12         switch(eq)
  13         {
  14         case ADD: return VK_BLEND_OP_ADD;
  15         case SUBTRACT: return VK_BLEND_OP_SUBTRACT;
  16         case REVERSE_SUBTRACT: return VK_BLEND_OP_REVERSE_SUBTRACT;
  17         case MIN: return VK_BLEND_OP_MIN;
  18         case MAX: return VK_BLEND_OP_MAX;
  19         default: throw invalid_argument("get_vulkan_blend_equation");
  20         }
  21 }
  22
  23 unsigned get_vulkan_blend_factor(BlendFactor factor)
  24 {
  25         switch(factor)
  26         {
  27         case ZERO: return VK_BLEND_FACTOR_ZERO;
  28         case ONE: return VK_BLEND_FACTOR_ONE;
  29         case SRC_COLOR: return VK_BLEND_FACTOR_SRC_COLOR;
  30         case ONE_MINUS_SRC_COLOR: return VK_BLEND_FACTOR_ONE_MINUS_SRC_COLOR;
  31         case SRC_ALPHA: return VK_BLEND_FACTOR_SRC_ALPHA;
  32         case ONE_MINUS_SRC_ALPHA: return VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
  33         case DST_COLOR: return VK_BLEND_FACTOR_DST_COLOR;
  34         case ONE_MINUS_DST_COLOR: return VK_BLEND_FACTOR_ONE_MINUS_DST_COLOR;
  35         case DST_ALPHA: return VK_BLEND_FACTOR_DST_ALPHA;
  36         case ONE_MINUS_DST_ALPHA: return VK_BLEND_FACTOR_ONE_MINUS_DST_ALPHA;
  37         case CONSTANT_COLOR: return VK_BLEND_FACTOR_CONSTANT_COLOR;
  38         case ONE_MINUS_CONSTANT_COLOR: return VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_COLOR;
  39         case CONSTANT_ALPHA: return VK_BLEND_FACTOR_CONSTANT_ALPHA;
  40         case ONE_MINUS_CONSTANT_ALPHA: return VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA;
  41         default: throw invalid_argument("get_vulkan_blend_factor");
  42         }
  43 }
  44
  45 unsigned get_vulkan_color_mask(ColorWriteMask mask)
  46 {
  47         unsigned result = 0;
  48         if(mask&WRITE_RED)
  49                 result |= VK_COLOR_COMPONENT_R_BIT;
  50         if(mask&WRITE_GREEN)
  51                 result |= VK_COLOR_COMPONENT_G_BIT;
  52         if(mask&WRITE_BLUE)
  53                 result |= VK_COLOR_COMPONENT_B_BIT;
  54         if(mask&WRITE_ALPHA)
  55                 result |= VK_COLOR_COMPONENT_A_BIT;
  56         return result;
  57 }
  58
  59 } // namespace GL
  60 } // namespace Msp