mesa: Fix glGet of ES2's GL_MAX_*_VECTORS properties.

Previously, the get table listed all three as having custom locations,
yet find_custom_value did not have cases to handle them.

MAX_VARYING_VECTORS does not need a custom location since MaxVaryings is
already stored as float[4] (or vec4).  MaxUniformComponents is stored as
the number of floats, however, so a custom implementation that divides
by 4 is necessary.

Fixes bugs.freedesktop.org #31495.

1 files changed, 11 insertions, 6 deletions

diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index b54af6ee86b..c8c0b8b4b1f 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -700,12 +700,9 @@ static const struct value_desc values[] = {
 #if FEATURE_ES2
    /* Enums unique to OpenGL ES 2.0 */
    { 0, 0, TYPE_API_MASK, API_OPENGLES2_BIT, NO_EXTRA },
-   { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT,
-     offsetof(struct gl_context, Const.FragmentProgram.MaxUniformComponents), NO_EXTRA },
-   { GL_MAX_VARYING_VECTORS, LOC_CUSTOM, TYPE_INT,
-     offsetof(struct gl_context, Const.MaxVarying), NO_EXTRA },
-   { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT,
-     offsetof(struct gl_context, Const.VertexProgram.MaxUniformComponents), NO_EXTRA },
+   { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
+   { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying), NO_EXTRA },
+   { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
    { GL_SHADER_COMPILER, CONST(1), NO_EXTRA },
    /* OES_get_program_binary */
    { GL_NUM_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },
@@ -1604,6 +1601,14 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
    case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
       v->value_int = ctx->Array.ArrayObj->PointSize.BufferObj->Name;
       break;
+
+   case GL_MAX_VERTEX_UNIFORM_VECTORS:
+      v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;
+      break;
+
+   case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
+      v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
+      break;
    }   
 }