[Mesa-dev] [RFC PATCH 05/65] mesa: refuse to update sampler parameters when a handle is allocated

[Samuel Pitoiset]

The ARB_bindless_texture spec says:

   "The error INVALID_OPERATION is generated by SamplerParameter* if
    <sampler> identifies a sampler object referenced by one or more
    texture handles."

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
---
 src/mesa/main/samplerobj.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/src/mesa/main/samplerobj.c b/src/mesa/main/samplerobj.c
index ee15c68b4f..cf4bcfce7c 100644
--- a/src/mesa/main/samplerobj.c
+++ b/src/mesa/main/samplerobj.c
@@ -801,6 +801,18 @@ _mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param)
    if (!sampObj)
       return;
 
+   if (sampObj->HandleAllocated) {
+      /* The ARB_bindless_texture spec says:
+       *
+       * "The error INVALID_OPERATION is generated by SamplerParameter* if
+       *  <sampler> identifies a sampler object referenced by one or more
+       *  texture handles."
+       */
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glSamplerParameteri(immutable sampler)");
+      return;
+   }
+
    switch (pname) {
    case GL_TEXTURE_WRAP_S:
       res = set_sampler_wrap_s(ctx, sampObj, param);
@@ -884,6 +896,12 @@ _mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param)
    if (!sampObj)
       return;
 
+   if (sampObj->HandleAllocated) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glSamplerParameterf(immutable sampler)");
+      return;
+   }
+
    switch (pname) {
    case GL_TEXTURE_WRAP_S:
       res = set_sampler_wrap_s(ctx, sampObj, (GLint) param);
@@ -966,6 +984,12 @@ _mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params)
    if (!sampObj)
       return;
 
+   if (sampObj->HandleAllocated) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glSamplerParameteriv(immutable sampler)");
+      return;
+   }
+
    switch (pname) {
    case GL_TEXTURE_WRAP_S:
       res = set_sampler_wrap_s(ctx, sampObj, params[0]);
@@ -1056,6 +1080,12 @@ _mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params)
    if (!sampObj)
       return;
 
+   if (sampObj->HandleAllocated) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glSamplerParameterfv(immutable sampler)");
+      return;
+   }
+
    switch (pname) {
    case GL_TEXTURE_WRAP_S:
       res = set_sampler_wrap_s(ctx, sampObj, (GLint) params[0]);
@@ -1139,6 +1169,12 @@ _mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params)
    if (!sampObj)
       return;
 
+   if (sampObj->HandleAllocated) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glSamplerParameterIiv(immutable sampler)");
+      return;
+   }
+
    switch (pname) {
    case GL_TEXTURE_WRAP_S:
       res = set_sampler_wrap_s(ctx, sampObj, params[0]);
@@ -1223,6 +1259,12 @@ _mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params)
    if (!sampObj)
       return;
 
+   if (sampObj->HandleAllocated) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glSamplerParameterIuiv(immutable sampler)");
+      return;
+   }
+
    switch (pname) {
    case GL_TEXTURE_WRAP_S:
       res = set_sampler_wrap_s(ctx, sampObj, params[0]);
-- 
2.13.0