Fix rlsw persistent alpha blending state (#5964)

src/external/rlsw.h

@@ -3909,7 +3909,6 @@ static void sw_immediate_set_color(const float color[4])
     RLSW.primitive.color[2] = color[2];
     RLSW.primitive.color[3] = color[3];
 
-    RLSW.primitive.hasColorAlpha |= (color[3] < 1.0f);
 }
 
 static void sw_immediate_set_texcoord(const float texcoord[2])
@@ -3948,6 +3947,9 @@ static void sw_immediate_push_vertex(const float position[4])
     for (int i = 0; i < 4; i++) vertex->color[i] = RLSW.primitive.color[i];
     for (int i = 0; i < 2; i++) vertex->texcoord[i] = RLSW.primitive.texcoord[i];
 
+    // Track whether any vertex in this primitive has alpha < 1.0
+    RLSW.primitive.hasColorAlpha |= (vertex->color[3] < 1.0f);
+
     // Immediate rendering of the primitive if the required number is reached
     if (RLSW.primitive.vertexCount == SW_PRIMITIVE_VERTEX_COUNT[RLSW.drawMode])
     {

src/rshapes.c

@@ -888,14 +888,13 @@ void DrawRectangleRounded(Rectangle rec, float roundness, int segments, Color co
 // Draw rectangle with rounded edges
 void DrawRectangleRoundedLines(Rectangle rec, float roundness, int segments, Color color)
 {
-    // NOTE: For line thicknes <=1.0f using RL_LINES, otherwise using RL_QUADS/RL_TRIANGLES
     DrawRectangleRoundedLinesEx(rec, roundness, segments, 1.0f, color);
 }
 
 // Draw rectangle with rounded edges outline with line thickness
 void DrawRectangleRoundedLinesEx(Rectangle rec, float roundness, int segments, float thick, Color color)
 {
-    if (thick < 0) thick = 0;
+    if (thick <= 0) return;
 
     // Not a rounded rectangle
     if (roundness <= 0.0f)
@@ -966,8 +965,6 @@ void DrawRectangleRoundedLinesEx(Rectangle rec, float roundness, int segments, f
 
     const float angles[4] = { 180.0f, 270.0f, 0.0f, 90.0f };
 
-    if (thick > 1)
-    {
 #if SUPPORT_QUADS_DRAW_MODE
     rlSetTexture(GetShapesTexture().id);
     Rectangle shapeRect = GetShapesTextureRectangle();
@@ -1107,35 +1104,6 @@ void DrawRectangleRoundedLinesEx(Rectangle rec, float roundness, int segments, f
         rlVertex2f(point[14].x, point[14].y);
     rlEnd();
 #endif
-    }
-    else
-    {
-        // Use LINES to draw the outline
-        rlBegin(RL_LINES);
-            // Draw all the 4 corners first: Upper Left Corner, Upper Right Corner, Lower Right Corner, Lower Left Corner
-            for (int k = 0; k < 4; ++k) // Hope the compiler is smart enough to unroll this loop
-            {
-                float angle = angles[k];
-                const Vector2 center = centers[k];
-
-                for (int i = 0; i < segments; i++)
-                {
-                    rlColor4ub(color.r, color.g, color.b, color.a);
-                    rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius);
-                    rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*outerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*outerRadius);
-                    angle += stepLength;
-                }
-            }
-
-            // And now the remaining 4 lines
-            for (int i = 0; i < 8; i += 2)
-            {
-                rlColor4ub(color.r, color.g, color.b, color.a);
-                rlVertex2f(point[i].x, point[i].y);
-                rlVertex2f(point[i + 1].x, point[i + 1].y);
-            }
-        rlEnd();
-    }
 }
 
 // Draw a polygon of n sides