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-rw-r--r--docs/shading.html2
-rw-r--r--src/mesa/main/mtypes.h1
-rw-r--r--src/mesa/main/shaderapi.c2
-rw-r--r--src/mesa/state_tracker/st_shader_cache.c6
4 files changed, 10 insertions, 1 deletions
diff --git a/docs/shading.html b/docs/shading.html
index 7e3d2e4fced..c789102e641 100644
--- a/docs/shading.html
+++ b/docs/shading.html
@@ -50,6 +50,8 @@ execution. These are generally used for debugging.
The filenames will be "shader_X.vert" or "shader_X.frag" where X
the shader ID.
<li><b>cache_info</b> - print debug information about shader cache
+<li><b>cache_fb</b> - force cached shaders to be ignored and do a full
+ recompile via the fallback path</li>
<li><b>uniform</b> - print message to stdout when glUniform is called
<li><b>nopvert</b> - force vertex shaders to be a simple shader that just transforms
the vertex position with ftransform() and passes through the color and
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index efc69202540..d060f8f7d33 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2977,6 +2977,7 @@ struct gl_shader_program
#define GLSL_REPORT_ERRORS 0x40 /**< Print compilation errors */
#define GLSL_DUMP_ON_ERROR 0x80 /**< Dump shaders to stderr on compile error */
#define GLSL_CACHE_INFO 0x100 /**< Print debug information about shader cache */
+#define GLSL_CACHE_FALLBACK 0x200 /**< Force shader cache fallback paths */
/**
diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 68fb3faf0c6..325542e5230 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -77,6 +77,8 @@ _mesa_get_shader_flags(void)
flags |= GLSL_DUMP;
if (strstr(env, "log"))
flags |= GLSL_LOG;
+ if (strstr(env, "cache_fb"))
+ flags |= GLSL_CACHE_FALLBACK;
if (strstr(env, "cache_info"))
flags |= GLSL_CACHE_INFO;
if (strstr(env, "nopvert"))
diff --git a/src/mesa/state_tracker/st_shader_cache.c b/src/mesa/state_tracker/st_shader_cache.c
index 175d69d732e..45438e56bd2 100644
--- a/src/mesa/state_tracker/st_shader_cache.c
+++ b/src/mesa/state_tracker/st_shader_cache.c
@@ -225,8 +225,12 @@ st_load_tgsi_from_disk_cache(struct gl_context *ctx,
if (prog->data->LinkStatus != linking_skipped)
return false;
- struct st_context *st = st_context(ctx);
uint8_t *buffer = NULL;
+ if (ctx->_Shader->Flags & GLSL_CACHE_FALLBACK) {
+ goto fallback_recompile;
+ }
+
+ struct st_context *st = st_context(ctx);
for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
if (prog->_LinkedShaders[i] == NULL)
continue;