dom/canvas/WebGL2ContextMRTs.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "WebGL2Context.h"
   7 #include "GLContext.h"
   8
   9 using namespace mozilla;
  10 using namespace mozilla::dom;
  11
  12 bool WebGL2Context::ValidateClearBuffer(const char* info, GLenum buffer, GLint drawbuffer, size_t elemCount)
  13 {
  14     size_t requiredElements = -1;
  15     GLint maxDrawbuffer = -1;
  16     switch (buffer) {
  17       case LOCAL_GL_COLOR:
  18       case LOCAL_GL_FRONT:
  19       case LOCAL_GL_BACK:
  20       case LOCAL_GL_LEFT:
  21       case LOCAL_GL_RIGHT:
  22       case LOCAL_GL_FRONT_AND_BACK:
  23           requiredElements = 4;
  24           maxDrawbuffer = mGLMaxDrawBuffers - 1;
  25           break;
  26
  27       case LOCAL_GL_DEPTH:
  28       case LOCAL_GL_STENCIL:
  29           requiredElements = 1;
  30           maxDrawbuffer = 0;
  31           break;
  32
  33       default:
  34           ErrorInvalidEnumInfo(info, buffer);
  35           return false;
  36     }
  37
  38     if (drawbuffer < 0 || drawbuffer > maxDrawbuffer) {
  39         ErrorInvalidValue("%s: invalid drawbuffer %d. This buffer only supports drawbuffer values between 0 and %d",
  40                           info, drawbuffer, maxDrawbuffer);
  41         return false;
  42     }
  43
  44     if (elemCount < requiredElements) {
  45         ErrorInvalidValue("%s: Not enough elements. Require %u. Given %u.",
  46                           info, requiredElements, elemCount);
  47         return false;
  48     }
  49     return true;
  50 }
  51
  52 // Common base functionality. These a good candidates to be moved into WebGLContextUnchecked.cpp
  53 void
  54 WebGL2Context::ClearBufferiv_base(GLenum buffer, GLint drawbuffer, const GLint* value)
  55 {
  56     MakeContextCurrent();
  57     gl->fClearBufferiv(buffer, drawbuffer, value);
  58 }
  59
  60 void
  61 WebGL2Context::ClearBufferuiv_base(GLenum buffer, GLint drawbuffer, const GLuint* value)
  62 {
  63     MakeContextCurrent();
  64     gl->fClearBufferuiv(buffer, drawbuffer, value);
  65 }
  66
  67 void
  68 WebGL2Context::ClearBufferfv_base(GLenum buffer, GLint drawbuffer, const GLfloat* value)
  69 {
  70     MakeContextCurrent();
  71     gl->fClearBufferfv(buffer, drawbuffer, value);
  72 }
  73
  74 void
  75 WebGL2Context::ClearBufferiv(GLenum buffer, GLint drawbuffer, const dom::Int32Array& value)
  76 {
  77     if (!ValidateClearBuffer("clearBufferiv", buffer, drawbuffer, value.Length())) {
  78         return;
  79     }
  80
  81     ClearBufferiv_base(buffer, drawbuffer, value.Data());
  82 }
  83
  84 void
  85 WebGL2Context::ClearBufferiv(GLenum buffer, GLint drawbuffer, const dom::Sequence<GLint>& value)
  86 {
  87     if (!ValidateClearBuffer("clearBufferiv", buffer, drawbuffer, value.Length())) {
  88         return;
  89     }
  90
  91     ClearBufferiv_base(buffer, drawbuffer, value.Elements());
  92 }
  93
  94 void
  95 WebGL2Context::ClearBufferuiv(GLenum buffer, GLint drawbuffer, const dom::Uint32Array& value)
  96 {
  97     if (!ValidateClearBuffer("clearBufferuiv", buffer, drawbuffer, value.Length())) {
  98         return;
  99     }
 100
 101     ClearBufferuiv_base(buffer, drawbuffer, value.Data());
 102 }
 103
 104 void
 105 WebGL2Context::ClearBufferuiv(GLenum buffer, GLint drawbuffer, const dom::Sequence<GLuint>& value)
 106 {
 107     if (!ValidateClearBuffer("clearBufferuiv", buffer, drawbuffer, value.Length())) {
 108         return;
 109     }
 110
 111     ClearBufferuiv_base(buffer, drawbuffer, value.Elements());
 112 }
 113
 114 void
 115 WebGL2Context::ClearBufferfv(GLenum buffer, GLint drawbuffer, const dom::Float32Array& value)
 116 {
 117     if (!ValidateClearBuffer("clearBufferfv", buffer, drawbuffer, value.Length())) {
 118         return;
 119     }
 120
 121     ClearBufferfv_base(buffer, drawbuffer, value.Data());
 122 }
 123
 124 void
 125 WebGL2Context::ClearBufferfv(GLenum buffer, GLint drawbuffer, const dom::Sequence<GLfloat>& value)
 126 {
 127     if (!ValidateClearBuffer("clearBufferfv", buffer, drawbuffer, value.Length())) {
 128         return;
 129     }
 130
 131     ClearBufferfv_base(buffer, drawbuffer, value.Elements());
 132 }
 133
 134 void
 135 WebGL2Context::ClearBufferfi(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil)
 136 {
 137     if (buffer != LOCAL_GL_DEPTH_STENCIL) {
 138         return ErrorInvalidEnumInfo("clearBufferfi: buffer", buffer);
 139     }
 140     MakeContextCurrent();
 141     gl->fClearBufferfi(buffer, drawbuffer, depth, stencil);
 142 }