From: Marta Lofstedt <marta.lofst...@intel.com>
Signed-off-by: Marta Lofstedt <marta.lofst...@intel.com>
---
src/mapi/glapi/gen/gl_API.xml | 4 ++++
src/mesa/main/shaderimage.c | 40 +++++++++++++++++++++++++++++++++
src/mesa/main/shaderimage.h | 3 +++
src/mesa/main/tests/dispatch_sanity.cpp | 3 +--
4 files changed, 48 insertions(+), 2 deletions(-)
diff --git a/src/mapi/glapi/gen/gl_API.xml b/src/mapi/glapi/gen/gl_API.xml
index 658efa4..3db4349 100644
--- a/src/mapi/glapi/gen/gl_API.xml
+++ b/src/mapi/glapi/gen/gl_API.xml
@@ -2966,6 +2966,10 @@
<param name="height" type="GLsizei"/>
<glx rop="191"/>
</function>
+
+ <function name="MemoryBarrierByRegion" es2="3.1">
+ <param name="barriers" type="GLbitfield"/>
+ </function>
</category>
<category name="1.1">
diff --git a/src/mesa/main/shaderimage.c b/src/mesa/main/shaderimage.c
index a348cdb..7337f22 100644
--- a/src/mesa/main/shaderimage.c
+++ b/src/mesa/main/shaderimage.c
@@ -653,3 +653,43 @@ _mesa_MemoryBarrier(GLbitfield barriers)
if (ctx->Driver.MemoryBarrier)
ctx->Driver.MemoryBarrier(ctx, barriers);
}
+
+void GLAPIENTRY
+_mesa_MemoryBarrierByRegion(GLbitfield barriers)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ GLbitfield all_allowed_bits = GL_ATOMIC_COUNTER_BARRIER_BIT |
+ GL_FRAMEBUFFER_BARRIER_BIT |
+ GL_SHADER_IMAGE_ACCESS_BARRIER_BIT |
+ GL_SHADER_STORAGE_BARRIER_BIT |
+ GL_TEXTURE_FETCH_BARRIER_BIT |
+ GL_UNIFORM_BARRIER_BIT;
+
+ if (ctx->Driver.MemoryBarrier) {
+ /* From section 7.11.2 of the OpenGL ES 3.1 specification:
+ *
+ * "When barriers is ALL_BARRIER_BITS, shader memory accesses will be
+ * synchronized relative to all these barrier bits, but not to other
+ * barrier bits specific to MemoryBarrier."
+ *
+ * That is, if barriers is the special value GL_ALL_BARRIER_BITS, then
all
+ * barriers allowed by glMemoryBarrierByRegion should be activated."
+ */
+ if (barriers == GL_ALL_BARRIER_BITS)
+ return ctx->Driver.MemoryBarrier(ctx, all_allowed_bits);
+
+ /* From section 7.11.2 of the OpenGL ES 3.1 specification:
+ *
+ * "An INVALID_VALUE error is generated if barriers is not the special
+ * value ALL_BARRIER_BITS, and has any bits set other than those
+ * described above."
+ */
+ if ((barriers & ~all_allowed_bits) != 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glMemoryBarrierByRegion(unsupported barrier bit");
+ }
+
+ ctx->Driver.MemoryBarrier(ctx, barriers);
+ }
+}
diff --git a/src/mesa/main/shaderimage.h b/src/mesa/main/shaderimage.h
index 33d8a1e..d08ece8 100644
--- a/src/mesa/main/shaderimage.h
+++ b/src/mesa/main/shaderimage.h
@@ -68,6 +68,9 @@ _mesa_BindImageTextures(GLuint first, GLsizei count, const
GLuint *textures);
void GLAPIENTRY
_mesa_MemoryBarrier(GLbitfield barriers);
+void GLAPIENTRY
+_mesa_MemoryBarrierByRegion(GLbitfield barriers);
+
#ifdef __cplusplus
}
#endif
diff --git a/src/mesa/main/tests/dispatch_sanity.cpp
b/src/mesa/main/tests/dispatch_sanity.cpp
index af89d2c..14c9eda 100644
--- a/src/mesa/main/tests/dispatch_sanity.cpp
+++ b/src/mesa/main/tests/dispatch_sanity.cpp
@@ -2461,8 +2461,7 @@ const struct function gles31_functions_possible[] = {
{ "glGetBooleani_v", 31, -1 },
{ "glMemoryBarrier", 31, -1 },
- // FINISHME: This function has not been implemented yet.
- // { "glMemoryBarrierByRegion", 31, -1 },
+ { "glMemoryBarrierByRegion", 31, -1 },
{ "glTexStorage2DMultisample", 31, -1 },
{ "glGetMultisamplefv", 31, -1 },
--
1.9.1
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