UPBGE: Use textureCubeLod when using realtime cubemap

This way we can blurry the reflection easier.
UPBGE · May 20, 2020 · 8329513 · 8329513 · youle31 · May 21, 2020
1 parent e8abf7a
commit 8329513
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Showing 2 changed files with 16 additions and 2 deletions.
diff --git a/source/blender/gpu/shaders/gpu_shader_material.glsl b/source/blender/gpu/shaders/gpu_shader_material.glsl
@@ -1461,6 +1461,13 @@ void mtex_cube_map_refl_from_refldir(
         value = color.a;
 }
 
+void mtex_cube_map_refl_from_refldir_cubelod(
+        samplerCube ima, vec3 reflecteddirection, float lodbias, out float value, out vec4 color)
+{
+        color = textureCubeLod(ima, reflecteddirection, lodbias);
+        value = color.a;
+}
+
 vec4 mtex_cube_map_refl_color(samplerCube ima, mat4 viewmatrixinverse, float lodbias, vec3 vn, vec3 viewdirection)
 {
 	vec3 normaldirection = normalize(viewmatrixinverse * vec4(vn, 0.0)).xyz;

diff --git a/source/blender/nodes/shader/nodes/node_shader_texture.c b/source/blender/nodes/shader/nodes/node_shader_texture.c
@@ -115,6 +115,7 @@ static void node_shader_exec_texture(void *data, int UNUSED(thread), bNode *node
 static int gpu_shader_texture(GPUMaterial *mat, bNode *node, bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
 {
 	Tex *tex = (Tex *)node->id;
+	EnvMap *env = tex->env;
 
 	if (tex && tex->ima && (tex->type == TEX_IMAGE || tex->type == TEX_ENVMAP)) {
 		if (tex->type == TEX_IMAGE) {
@@ -129,8 +130,14 @@ static int gpu_shader_texture(GPUMaterial *mat, bNode *node, bNodeExecData *UNUS
 			}
 			if (!GPU_material_use_world_space_shading(mat))
 				GPU_link(mat, "direction_transform_m4v3", in[0].link, GPU_material_builtin(mat, GPU_INVERSE_VIEW_MATRIX), &in[0].link);
-			GPU_link(mat, "mtex_cube_map_refl_from_refldir",
-				GPU_cube_map(tex->ima, &tex->iuser, false), in[0].link, in[1].link, &out[0].link, &out[1].link);
+			if (env && env->stype == ENV_REALT && env->type == ENV_CUBE) {
+			  GPU_link(mat, "mtex_cube_map_refl_from_refldir_cubelod",
+				  GPU_cube_map(tex->ima, &tex->iuser, false), in[0].link, in[1].link, &out[0].link, &out[1].link);
+			}
+			else {
+			  GPU_link(mat, "mtex_cube_map_refl_from_refldir",
+				  GPU_cube_map(tex->ima, &tex->iuser, false), in[0].link, in[1].link, &out[0].link, &out[1].link);
+			}
 			GPU_link(mat, "color_to_normal", out[1].link, &out[2].link);
 		}