From 7b920e768a00345b1809c24e081ae1b30883ff82 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Tue, 5 Mar 2024 23:09:31 +0100
Subject: [PATCH] GL: extend to size_t before casting to a pointer for
 glDrawElements().

Fixes the last MSVC C4312 occurence.
---
 src/Magnum/GL/Mesh.cpp | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/Magnum/GL/Mesh.cpp b/src/Magnum/GL/Mesh.cpp
index ecfb69acb..6c308ef8a 100644
--- a/src/Magnum/GL/Mesh.cpp
+++ b/src/Magnum/GL/Mesh.cpp
@@ -900,7 +900,7 @@ void Mesh::drawInternal(Int count, Int baseVertex, Int instanceCount, GLintptr i
                 #else
                 state.drawRangeElementsBaseVertexImplementation
                 #endif
-                    (GLenum(_primitive), indexStart, indexEnd, count, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexByteOffset), baseVertex);
+                    (GLenum(_primitive), indexStart, indexEnd, count, GLenum(_indexType), reinterpret_cast<GLvoid*>(std::size_t(indexByteOffset)), baseVertex);
 
             /* Indexed mesh */
             } else
@@ -911,7 +911,7 @@ void Mesh::drawInternal(Int count, Int baseVertex, Int instanceCount, GLintptr i
                 #else
                 state.drawElementsBaseVertexImplementation
                 #endif
-                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexByteOffset), baseVertex);
+                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(std::size_t(indexByteOffset)), baseVertex);
             }
             #else
             CORRADE_ASSERT_UNREACHABLE("GL::AbstractShaderProgram::draw(): indexed mesh draw with base vertex specification possible only since WebGL 2.0", );
@@ -922,7 +922,7 @@ void Mesh::drawInternal(Int count, Int baseVertex, Int instanceCount, GLintptr i
             #ifndef MAGNUM_TARGET_GLES2
             /* Indexed mesh with specified range */
             if(indexEnd) {
-                glDrawRangeElements(GLenum(_primitive), indexStart, indexEnd, count, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexByteOffset));
+                glDrawRangeElements(GLenum(_primitive), indexStart, indexEnd, count, GLenum(_indexType), reinterpret_cast<GLvoid*>(std::size_t(indexByteOffset)));
 
             /* Indexed mesh */
             } else
@@ -931,7 +931,7 @@ void Mesh::drawInternal(Int count, Int baseVertex, Int instanceCount, GLintptr i
             static_cast<void>(indexEnd);
             #endif
             {
-                glDrawElements(GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexByteOffset));
+                glDrawElements(GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(std::size_t(indexByteOffset)));
             }
         }
 
@@ -971,7 +971,7 @@ void Mesh::drawInternal(Int count, Int baseVertex, Int instanceCount, GLintptr i
                 #else
                 state.drawElementsInstancedBaseVertexBaseInstanceImplementation
                 #endif
-                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexByteOffset), instanceCount, baseVertex, baseInstance);
+                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(std::size_t(indexByteOffset)), instanceCount, baseVertex, baseInstance);
 
             /* Indexed mesh with base vertex */
             } else {
@@ -980,7 +980,7 @@ void Mesh::drawInternal(Int count, Int baseVertex, Int instanceCount, GLintptr i
                 #else
                 state.drawElementsInstancedBaseVertexImplementation
                 #endif
-                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexByteOffset), instanceCount, baseVertex);
+                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(std::size_t(indexByteOffset)), instanceCount, baseVertex);
             }
             #else
             CORRADE_ASSERT_UNREACHABLE("GL::AbstractShaderProgram::draw(): instanced indexed mesh draw with base vertex specification possible only since OpenGL ES 3.0", );
@@ -996,7 +996,7 @@ void Mesh::drawInternal(Int count, Int baseVertex, Int instanceCount, GLintptr i
                 #else
                 state.drawElementsInstancedBaseInstanceImplementation
                 #endif
-                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexByteOffset), instanceCount, baseInstance);
+                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(std::size_t(indexByteOffset)), instanceCount, baseInstance);
 
             /* Instanced mesh */
             } else
@@ -1007,7 +1007,7 @@ void Mesh::drawInternal(Int count, Int baseVertex, Int instanceCount, GLintptr i
                 #else
                 state.drawElementsInstancedImplementation
                 #endif
-                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexByteOffset), instanceCount);
+                    (GLenum(_primitive), count, GLenum(_indexType), reinterpret_cast<GLvoid*>(std::size_t(indexByteOffset)), instanceCount);
             }
         }
     }