Metal: GLSL Compatibility - explicit mat4_to_mat3 conversion

Explicit constructor for mat3 from a mat4 is not valid and cannot be overloaded.

Adding explicit texture resource type flags for depth textures. This is an explicit requirement for Metal Shading language. This is a temporary compatibility, as this path is already supported in GPU_SHADER_CREATE_INFO under ImageType::DEPTH_2D, though required in shader source for MSL shaders which do not have create info.

Authored by Apple: Michael Parkin-White

Ref T96261

Reviewed By: fclem

Maniphest Tasks: T96261

Differential Revision: https://developer.blender.org/D14418

source/blender/draw/engines/eevee/shaders/effect_mist_frag.glsl

@@ -4,7 +4,7 @@
 
 /* Convert depth to Mist factor */
 uniform vec3 mistSettings;
-uniform sampler2D depthBuffer;
+uniform depth2D depthBuffer;
 
 #define mistStart mistSettings.x
 #define mistInvDistance mistSettings.y

source/blender/draw/engines/eevee/shaders/effect_motion_blur_frag.glsl

@@ -11,7 +11,7 @@
  * by Jorge Jimenez
  */
 uniform sampler2D colorBuffer;
-uniform sampler2D depthBuffer;
+uniform depth2D depthBuffer;
 uniform sampler2D velocityBuffer;
 uniform sampler2D tileMaxBuffer;
 

source/blender/draw/engines/eevee/shaders/effect_subsurface_frag.glsl

@@ -9,7 +9,7 @@
 #define MAX_SSS_SAMPLES 65
 layout(std140) uniform sssProfile
 {
-  vec4 kernel[MAX_SSS_SAMPLES];
+  vec4 sss_kernel[MAX_SSS_SAMPLES];
   vec4 radii_max_radius;
   int sss_samples;
 };
@@ -48,11 +48,11 @@ void main(void)
   float sss_radius_inv = 1.0 / max(1e-8, sss_radius);
 
   /* Center sample */
-  vec3 accum = sss_irradiance * kernel[0].rgb;
+  vec3 accum = sss_irradiance * sss_kernel[0].rgb;
 
   for (int i = 1; i < sss_samples && i < MAX_SSS_SAMPLES; i++) {
-    vec2 sample_uv = uvs + kernel[i].a * finalStep *
-                               ((abs(kernel[i].a) > sssJitterThreshold) ? dir : dir_rand);
+    vec2 sample_uv = uvs + sss_kernel[i].a * finalStep *
+                               ((abs(sss_kernel[i].a) > sssJitterThreshold) ? dir : dir_rand);
     vec3 color = texture(sssIrradiance, sample_uv).rgb;
     float sample_depth = texture(depthBuffer, sample_uv).r;
     sample_depth = get_view_z_from_depth(sample_depth);
@@ -66,8 +66,8 @@ void main(void)
     if (any(lessThan(sample_uv, vec2(0.0))) || any(greaterThan(sample_uv, vec2(1.0)))) {
       s = 0.0;
     }
-    /* Mix with first sample in failure case and apply kernel color. */
-    accum += kernel[i].rgb * mix(sss_irradiance, color, s);
+    /* Mix with first sample in failure case and apply sss_kernel color. */
+    accum += sss_kernel[i].rgb * mix(sss_irradiance, color, s);
   }
 
 #if defined(FIRST_PASS)

source/blender/draw/engines/eevee/shaders/effect_temporal_aa.glsl

@@ -3,7 +3,7 @@
 #pragma BLENDER_REQUIRE(common_view_lib.glsl)
 
 uniform sampler2D colorBuffer;
-uniform sampler2D depthBuffer;
+uniform depth2D depthBuffer;
 uniform sampler2D colorHistoryBuffer;
 
 uniform mat4 prevViewProjectionMatrix;

source/blender/draw/engines/eevee/shaders/effect_translucency_frag.glsl

@@ -8,7 +8,7 @@ in vec4 uvcoordsvar;
 
 out vec4 FragColor;
 
-uniform sampler2D depthBuffer;
+uniform depth2D depthBuffer;
 uniform sampler1D sssTexProfile;
 uniform sampler2D sssRadius;
 uniform sampler2DArray sssShadowCubes;
@@ -21,7 +21,7 @@ uniform sampler2DArray sssShadowCascades;
 
 layout(std140) uniform sssProfile
 {
-  vec4 kernel[MAX_SSS_SAMPLES];
+  vec4 sss_kernel[MAX_SSS_SAMPLES];
   vec4 radii_max_radius;
   int sss_samples;
 };

source/blender/draw/engines/eevee/shaders/effect_velocity_resolve_frag.glsl

@@ -1,7 +1,7 @@
 
 #pragma BLENDER_REQUIRE(common_math_lib.glsl)
 
-uniform sampler2D depthBuffer;
+uniform depth2D depthBuffer;
 
 uniform mat4 prevViewProjMatrix;
 uniform mat4 currViewProjMatrixInv;

source/blender/draw/engines/eevee/shaders/lights_lib.glsl

@@ -89,8 +89,8 @@ layout(std140) uniform light_block
   LightData lights_data[MAX_LIGHT];
 };
 
-uniform sampler2DArrayShadow shadowCubeTexture;
-uniform sampler2DArrayShadow shadowCascadeTexture;
+uniform depth2DArrayShadow shadowCubeTexture;
+uniform depth2DArrayShadow shadowCascadeTexture;
 
 /** \} */
 

source/blender/draw/engines/eevee/shaders/renderpass_postprocess_frag.glsl

@@ -16,7 +16,7 @@
 uniform int postProcessType;
 uniform int currentSample;
 
-uniform sampler2D depthBuffer;
+uniform depth2D depthBuffer;
 uniform sampler2D inputBuffer;
 uniform sampler2D inputSecondLightBuffer;
 uniform sampler2D inputColorBuffer;

source/blender/draw/engines/eevee/shaders/shadow_accum_frag.glsl

@@ -3,7 +3,7 @@
 #pragma BLENDER_REQUIRE(common_utiltex_lib.glsl)
 #pragma BLENDER_REQUIRE(lights_lib.glsl)
 
-uniform sampler2D depthBuffer;
+uniform depth2D depthBuffer;
 
 out vec4 fragColor;
 

source/blender/draw/engines/overlay/shaders/antialiasing_frag.glsl

@@ -2,7 +2,7 @@
 #pragma BLENDER_REQUIRE(common_math_lib.glsl)
 
 uniform sampler2D colorTex;
-uniform sampler2D depthTex;
+uniform depth2D depthTex;
 uniform sampler2D lineTex;
 uniform bool doSmoothLines;
 

source/blender/draw/engines/overlay/shaders/extra_lightprobe_grid_vert.glsl

@@ -1,5 +1,5 @@
 
-uniform sampler2D depthBuffer;
+uniform depth2D depthBuffer;
 uniform vec4 gridModelMatrix[4];
 uniform bool isTransform;
 

source/blender/draw/engines/overlay/shaders/grid_frag.glsl

@@ -12,7 +12,7 @@ uniform vec3 planeAxes;
 uniform float gridDistance;
 uniform vec3 gridSize;
 uniform float lineKernel = 0.0;
-uniform sampler2D depthBuffer;
+uniform depth2D depthBuffer;
 
 uniform int gridFlag;
 uniform float zoomFactor;
@@ -49,7 +49,7 @@ float get_grid(vec2 co, vec2 fwidthCos, float grid_size)
 {
   float half_size = grid_size / 2.0;
   /* triangular wave pattern, amplitude is [0, half_size] */
-  vec2 grid_domain = abs(mod(co + half_size, grid_size) - half_size);
+  vec2 grid_domain = abs(mod(co + half_size, vec2(grid_size)) - half_size);
   /* modulate by the absolute rate of change of the coordinates
    * (make lines have the same width under perspective) */
   grid_domain /= fwidthCos;

source/blender/gpu/shaders/opengl/glsl_shader_defines.glsl

@@ -1,3 +1,13 @@
+
+/* Texture format tokens -- Type explictness required by other Graphics APIs. */
+#define depth2D sampler2D
+#define depth2DArray sampler2DArray
+#define depth2DMS sampler2DMS
+#define depth2DMSArray sampler2DMSArray
+#define depthCube samplerCube
+#define depthCubeArray samplerCubeArray
+#define depth2DArrayShadow sampler2DArrayShadow
+
 /* Backend Functions. */
 #define select(A, B, mask) mix(A, B, mask)