shader_?_uniform_exists()

gm82dx9.gej

@@ -3,7 +3,7 @@
 	"folder": "gm82",
 	"version": "1.0",
 	"author": "Floogle && renex",
-	"date": "28/08/2024",
+	"date": "21/09/2024",
 	"license": "Free to use, also for commercial games.",
 	"description": "Requires Game Maker 8.2 Network. Part of the standard Game Maker 8.2 distribution. This extension package upgrades Game Maker to DirectX version 9.0, providing extended render state control and HLSL9 shaders.",
 	"helpfile": "",
@@ -2535,6 +2535,17 @@
 					"argtypes": null,
 					"returntype": 2
 				},
+				{
+					"name": "shader_pixel_uniform_exists",
+					"extname": "",
+					"calltype": 2,
+					"helpline": "shader_pixel_uniform_exists(name)",
+					"hidden": false,
+					"argtypes": [
+						2
+					],
+					"returntype": 2
+				},
 				{
 					"name": "shader_pixel_uniform_f",
 					"extname": "",
@@ -2658,6 +2669,17 @@
 					"argtypes": null,
 					"returntype": 2
 				},
+				{
+					"name": "shader_vertex_uniform_exists",
+					"extname": "",
+					"calltype": 2,
+					"helpline": "shader_vertex_uniform_exists(name)",
+					"hidden": false,
+					"argtypes": [
+						2
+					],
+					"returntype": 2
+				},
 				{
 					"name": "shader_vertex_uniform_f",
 					"extname": "",

source/gm82dx9.cpp

@@ -183,7 +183,7 @@ GMREAL __gm82dx9_set_light(
     double specular, double specular_factor
 ) {
     ///d3d_light_define_ext(index,type,x,y,z,dx,dy,dz,range,inner_rad,outer_rad,color_diffuse,diffuse_factor,color_specular,specular_factor)
-    //index: light number (use small integers)
+    //index: light number 0-7
     //type: one of lt_point, lt_spotlight, or lt_sun
     //x,y,z: light position (unused for sun lights)
     //dx,dy,dz: direction vector (unused for point lights)

source/shaders.gml

@@ -19,6 +19,16 @@
     shader_pixel_set(__gm82dx9_default_ps)
 
 
+#define shader_vertex_uniform_exists
+    ///shader_vertex_uniform_exists(name)
+    return (__gm82dx9_get_vconst(argument0)!=noone) 
+
+
+#define shader_pixel_uniform_exists
+    ///shader_pixel_uniform_exists(name)
+    return (__gm82dx9_get_pconst(argument0)!=noone) 
+
+
 #define shader_vertex_uniform_get_address
     ///shader_vertex_uniform_get_address(uniform)
     var __addr;
@@ -277,11 +287,11 @@
     shader_vertex_set_passthrough()
 
     shader_pixel_set(argument0)
-    shader_pixel_uniform_f(shader_pixel_uniform_get_address("_iGlobalTime"),argument5)
-    shader_pixel_uniform_f(shader_pixel_uniform_get_address("_iTime"),argument5)
-    shader_pixel_uniform_f(shader_pixel_uniform_get_address("_iResolution"),argument3,argument4,0)
-    shader_pixel_uniform_f(shader_pixel_uniform_get_address("_iMouse"),x,y,0,0)
-    shader_pixel_uniform_f(shader_pixel_uniform_get_address("_iFrameRate"),room_speed)
+    if (shader_pixel_uniform_exists("_iGlobalTime")) shader_pixel_uniform_f("_iGlobalTime",argument5)
+    if (shader_pixel_uniform_exists("_iTime")) shader_pixel_uniform_f("_iTime",argument5)
+    if (shader_pixel_uniform_exists("_iResolution")) shader_pixel_uniform_f("_iResolution",argument3,argument4,0)
+    if (shader_pixel_uniform_exists("_iMouse")) shader_pixel_uniform_f("_iMouse",x,y,0,0)
+    if (shader_pixel_uniform_exists("_iFrameRate")) shader_pixel_uniform_f("_iFrameRate",room_speed)
 
     draw_primitive_begin_texture(pr_trianglestrip,-1)
     draw_vertex_texture(argument1,argument2,0,1)