Add a new shader define to fix a Vulkan crash (internal-9913)

GitOrigin-RevId: a484ab0270a5af72dcee897d71b8e2f3e980230a

Author: lasselammi

src/render/draw_line.ts

@@ -186,6 +186,10 @@ export default function drawLine(painter: Painter, sourceCache: SourceCache, lay
                 defines.push('LINE_PATTERN_TRANSITION');
             }
 
+            if (bucket.elevationGroundScaleVertexBuffer) {
+                defines.push('ELEVATION_GROUND_SCALE');
+            }
+
             const affectedByFog = painter.isTileAffectedByFog(coord);
             const program = painter.getOrCreateProgram(programId, {config: programConfiguration, defines, overrideFog: affectedByFog});
 

src/render/program/line_program.ts

@@ -54,7 +54,7 @@ export type LinePatternUniformsType = {
     ['u_pattern_transition']: Uniform1f;
 };
 
-export type LineDefinesType = 'RENDER_LINE_GRADIENT' | 'RENDER_LINE_DASH' | 'RENDER_LINE_TRIM_OFFSET' | 'RENDER_LINE_BORDER' | 'LINE_JOIN_NONE' | 'ELEVATED' | 'VARIABLE_LINE_WIDTH' | 'CROSS_SLOPE_VERTICAL' | 'CROSS_SLOPE_HORIZONTAL' | 'ELEVATION_REFERENCE_SEA' | 'LINE_PATTERN_TRANSITION' | 'USE_MRT1' | 'DUAL_SOURCE_BLENDING';
+export type LineDefinesType = 'RENDER_LINE_GRADIENT' | 'RENDER_LINE_DASH' | 'RENDER_LINE_TRIM_OFFSET' | 'RENDER_LINE_BORDER' | 'LINE_JOIN_NONE' | 'ELEVATED' | 'VARIABLE_LINE_WIDTH' | 'CROSS_SLOPE_VERTICAL' | 'CROSS_SLOPE_HORIZONTAL' | 'ELEVATION_REFERENCE_SEA' | 'ELEVATION_GROUND_SCALE' | 'LINE_PATTERN_TRANSITION' | 'USE_MRT1' | 'DUAL_SOURCE_BLENDING';
 
 const lineUniforms = (context: Context): LineUniformsType => ({
     'u_matrix': new UniformMatrix4f(context),

src/shaders/line.vertex.glsl

@@ -15,7 +15,7 @@ in vec4 a_data;
 #if defined(ELEVATED) || defined(ELEVATED_ROADS) || defined(VARIABLE_LINE_WIDTH)
 in vec3 a_z_offset_width;
 #endif
-#ifdef ELEVATED
+#ifdef ELEVATION_GROUND_SCALE
 in float a_elevation_ground_scale;
 #endif
 
@@ -291,7 +291,10 @@ void main() {
     vec2 offsetTile = offset2 * u_pixels_to_tile_units;
     vec2 offset_pos = pos + offsetTile;
     float ele = 0.0;
-    float scaled_z_offset = a_z_offset * mix(1.0, u_exaggeration, a_elevation_ground_scale);
+    float scaled_z_offset = a_z_offset;
+#ifdef ELEVATION_GROUND_SCALE
+    scaled_z_offset = a_z_offset * mix(1.0, u_exaggeration, a_elevation_ground_scale);
+#endif
 #ifdef CROSS_SLOPE_VERTICAL
     // Vertical line
     // The least significant bit of a_pos_normal.y hold 1 if it's on top, 0 for bottom

src/shaders/line_pattern.vertex.glsl

@@ -15,7 +15,7 @@ in vec4 a_data;
 #if defined(ELEVATED) || defined(ELEVATED_ROADS)
 in vec3 a_z_offset_width;
 #endif
-#ifdef ELEVATED
+#ifdef ELEVATION_GROUND_SCALE
 in float a_elevation_ground_scale;
 #endif
 // Includes in order: a_uv_x, a_split_index, a_line_progress
@@ -158,7 +158,10 @@ void main() {
     vec2 offsetTile = offset2 * u_pixels_to_tile_units;
     vec2 offset_pos = pos + offsetTile;
     float ele = 0.0;
-    float scaled_z_offset = a_z_offset * mix(1.0, u_exaggeration, a_elevation_ground_scale);
+    float scaled_z_offset = a_z_offset;
+#ifdef ELEVATION_GROUND_SCALE
+    scaled_z_offset = a_z_offset * mix(1.0, u_exaggeration, a_elevation_ground_scale);
+#endif
 #ifdef CROSS_SLOPE_VERTICAL
     // Vertical line
     // The least significant bit of a_pos_normal.y hold 1 if it's on top, 0 for bottom