mesa: add ARB_texture_buffer_range glTextureBufferRangeEXT function

Reviewed-by: Marek Olšák <[email protected]>

3 files changed, 51 insertions, 1 deletions

diff --git a/src/mesa/main/tests/dispatch_sanity.cpp b/src/mesa/main/tests/dispatch_sanity.cpp
index 02ed6374317..f42d4f4b222 100644
--- a/src/mesa/main/tests/dispatch_sanity.cpp
+++ b/src/mesa/main/tests/dispatch_sanity.cpp
@@ -894,7 +894,7 @@ const struct function common_desktop_functions_possible[] = {
    { "glGetProgramResourceLocation", 43, -1 },
    { "glGetProgramResourceLocationIndex", 43, -1 },
    { "glShaderStorageBlockBinding", 43, -1 },
-// { "glTextureBufferRangeEXT", 43, -1 },               // XXX: Add to xml
+   { "glTextureBufferRangeEXT", 43, -1 },
    { "glTexStorage2DMultisample", 43, -1 },
    { "glTexStorage3DMultisample", 43, -1 },
 // { "glTextureStorage2DMultisampleEXT", 43, -1 },      // XXX: Add to xml
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 5e7f4f767fd..bea5c9ae356 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -6401,6 +6401,52 @@ _mesa_TexBufferRange(GLenum target, GLenum internalFormat, GLuint buffer,
                         offset, size, "glTexBufferRange");
 }
 
+
+/** GL_ARB_texture_buffer_range + GL_EXT_direct_state_access */
+void GLAPIENTRY
+_mesa_TextureBufferRangeEXT(GLuint texture, GLenum target, GLenum internalFormat,
+                            GLuint buffer, GLintptr offset, GLsizeiptr size)
+{
+   struct gl_texture_object *texObj;
+   struct gl_buffer_object *bufObj;
+
+   GET_CURRENT_CONTEXT(ctx);
+
+   texObj = _mesa_lookup_or_create_texture(ctx, target, texture, false, true,
+                                           "glTextureBufferRangeEXT");
+   if (!texObj)
+      return;
+
+   if (!check_texture_buffer_target(ctx, target, "glTextureBufferRangeEXT"))
+      return;
+
+   if (buffer) {
+      bufObj = _mesa_lookup_bufferobj_err(ctx, buffer, "glTextureBufferRangeEXT");
+      if (!bufObj)
+         return;
+
+      if (!check_texture_buffer_range(ctx, bufObj, offset, size,
+          "glTextureBufferRangeEXT"))
+         return;
+
+   } else {
+      /* OpenGL 4.5 core spec (02.02.2015) says in Section 8.9 Buffer
+       * Textures (PDF page 254):
+       *    "If buffer is zero, then any buffer object attached to the buffer
+       *    texture is detached, the values offset and size are ignored and
+       *    the state for offset and size for the buffer texture are reset to
+       *    zero."
+       */
+      offset = 0;
+      size = 0;
+      bufObj = NULL;
+   }
+
+   texture_buffer_range(ctx, texObj, internalFormat, bufObj,
+                        offset, size, "glTextureBufferRangeEXT");
+}
+
+
 void GLAPIENTRY
 _mesa_TextureBuffer(GLuint texture, GLenum internalFormat, GLuint buffer)
 {
diff --git a/src/mesa/main/teximage.h b/src/mesa/main/teximage.h
index b14acdf7597..66db78df4f9 100644
--- a/src/mesa/main/teximage.h
+++ b/src/mesa/main/teximage.h
@@ -785,6 +785,10 @@ _mesa_TexBufferRange(GLenum target, GLenum internalFormat, GLuint buffer,
                      GLintptr offset, GLsizeiptr size);
 
 extern void GLAPIENTRY
+_mesa_TextureBufferRangeEXT(GLuint texture, GLenum target, GLenum internalFormat,
+                            GLuint buffer, GLintptr offset, GLsizeiptr size);
+
+extern void GLAPIENTRY
 _mesa_TextureBuffer(GLuint texture, GLenum internalFormat, GLuint buffer);
 
 extern void GLAPIENTRY